diff --git a/.docker/1600-privnet-blocks-single.acc.gz b/.docker/1600-privnet-blocks-single.acc.gz
deleted file mode 100644
index e8be800fb..000000000
Binary files a/.docker/1600-privnet-blocks-single.acc.gz and /dev/null differ
diff --git a/.docker/6000-privnet-blocks.acc.gz b/.docker/6000-privnet-blocks.acc.gz
deleted file mode 100644
index b4d0213bb..000000000
Binary files a/.docker/6000-privnet-blocks.acc.gz and /dev/null differ
diff --git a/.docker/docker-compose.yml b/.docker/docker-compose.yml
index 3094f2513..82b5e8f98 100644
--- a/.docker/docker-compose.yml
+++ b/.docker/docker-compose.yml
@@ -81,7 +81,6 @@ services:
       - ../config/protocol.privnet.docker.single.yml:/config/protocol.privnet.yml
       - ./wallets/wallet1.json:/wallet1.json
       - volume_chain:/chains
-      - ./1600-privnet-blocks-single.acc.gz:/privnet-blocks.acc.gz
     networks:
       neo_go_network:
         ipv4_address: 172.200.0.1
diff --git a/Dockerfile b/Dockerfile
index a9c4bdb4d..30d412517 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -30,8 +30,6 @@ LABEL version=$VERSION
 WORKDIR /
 
 COPY --from=builder /neo-go/config /config
-COPY --from=builder /neo-go/.docker/6000-privnet-blocks.acc.gz /6000-privnet-blocks.acc.gz
-COPY --from=builder /neo-go/.docker/1600-privnet-blocks-single.acc.gz /1600-privnet-blocks-single.acc.gz
 COPY --from=builder /neo-go/.docker/privnet-entrypoint.sh /usr/bin/privnet-entrypoint.sh
 COPY --from=builder /go/bin/neo-go /usr/bin/neo-go
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
diff --git a/cli/wallet/multisig.go b/cli/wallet/multisig.go
index 883e3149e..639b77235 100644
--- a/cli/wallet/multisig.go
+++ b/cli/wallet/multisig.go
@@ -121,15 +121,4 @@ func writeParameterContext(c *context.ParameterContext, filename string) error {
 
 func printTxInfo(t *transaction.Transaction) {
 	fmt.Printf("Hash: %s\n", t.Hash().StringLE())
-	for i := range t.Inputs {
-		fmt.Printf("Input%02d: [%2d] %s\n", i, t.Inputs[i].PrevIndex, t.Inputs[i].PrevHash.StringLE())
-	}
-	for i := range t.Outputs {
-		fmt.Printf("Output%02d:\n", i)
-		fmt.Printf("\tAssetID   : %s\n", t.Outputs[i].AssetID.StringLE())
-		fmt.Printf("\tAmount    : %s\n", t.Outputs[i].Amount.String())
-		h := t.Outputs[i].ScriptHash
-		fmt.Printf("\tScriptHash: %s\n", t.Outputs[i].ScriptHash.StringLE())
-		fmt.Printf("\tToAddr    : %s\n", address.Uint160ToString(h))
-	}
 }
diff --git a/cli/wallet/nep5.go b/cli/wallet/nep5.go
index d0e3e0d1f..cf61345ff 100644
--- a/cli/wallet/nep5.go
+++ b/cli/wallet/nep5.go
@@ -1,12 +1,15 @@
 package wallet
 
 import (
+	"encoding/json"
 	"errors"
 	"fmt"
+	"io/ioutil"
 
 	"github.com/nspcc-dev/neo-go/cli/flags"
 	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
 	"github.com/nspcc-dev/neo-go/pkg/rpc/client"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/context"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/nspcc-dev/neo-go/pkg/wallet"
 	"github.com/urfave/cli"
@@ -82,6 +85,7 @@ func newNEP5Commands() []cli.Command {
 			Flags: []cli.Flag{
 				walletPathFlag,
 				rpcFlag,
+				outFlag,
 				timeoutFlag,
 				fromAddrFlag,
 				toAddrFlag,
@@ -341,11 +345,30 @@ func transferNEP5(ctx *cli.Context) error {
 		return cli.NewExitError(err, 1)
 	}
 
-	hash, err := c.TransferNEP5(acc, to, token, amount, gas)
+	tx, err := c.CreateNEP5TransferTx(acc, to, token.Hash, amount, gas)
 	if err != nil {
 		return cli.NewExitError(err, 1)
 	}
 
-	fmt.Println(hash.StringLE())
+	if outFile := ctx.String("out"); outFile != "" {
+		priv := acc.PrivateKey()
+		pub := priv.PublicKey()
+		sign := priv.Sign(tx.GetSignedPart())
+		scCtx := context.NewParameterContext("Neo.Core.ContractTransaction", tx)
+		if err := scCtx.AddSignature(acc.Contract, pub, sign); err != nil {
+			return cli.NewExitError(fmt.Errorf("can't add signature: %v", err), 1)
+		} else if data, err := json.Marshal(scCtx); err != nil {
+			return cli.NewExitError(fmt.Errorf("can't marshal tx to JSON: %v", err), 1)
+		} else if err := ioutil.WriteFile(outFile, data, 0644); err != nil {
+			return cli.NewExitError(fmt.Errorf("can't write tx to file: %v", err), 1)
+		}
+	} else {
+		_ = acc.SignTx(tx)
+		if err := c.SendRawTransaction(tx); err != nil {
+			return cli.NewExitError(err, 1)
+		}
+	}
+
+	fmt.Println(tx.Hash().StringLE())
 	return nil
 }
diff --git a/cli/wallet/wallet.go b/cli/wallet/wallet.go
index 6d6779ffd..0e349c64a 100644
--- a/cli/wallet/wallet.go
+++ b/cli/wallet/wallet.go
@@ -4,22 +4,16 @@ import (
 	"bufio"
 	"context"
 	"encoding/hex"
-	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"strings"
 	"syscall"
 
 	"github.com/nspcc-dev/neo-go/cli/flags"
-	"github.com/nspcc-dev/neo-go/pkg/core"
-	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
 	"github.com/nspcc-dev/neo-go/pkg/rpc/client"
-	"github.com/nspcc-dev/neo-go/pkg/rpc/request"
-	context2 "github.com/nspcc-dev/neo-go/pkg/smartcontract/context"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/nspcc-dev/neo-go/pkg/wallet"
 	"github.com/urfave/cli"
@@ -179,29 +173,6 @@ func NewCommands() []cli.Command {
 					forceFlag,
 				},
 			},
-			{
-				Name:  "transfer",
-				Usage: "transfer NEO/GAS",
-				UsageText: "transfer --path <path> --from <addr> --to <addr>" +
-					" --amount <amount> --asset [NEO|GAS|<hex-id>] [--out <path>]",
-				Action: transferAsset,
-				Flags: []cli.Flag{
-					walletPathFlag,
-					rpcFlag,
-					timeoutFlag,
-					outFlag,
-					fromAddrFlag,
-					toAddrFlag,
-					cli.StringFlag{
-						Name:  "amount",
-						Usage: "Amount of asset to send",
-					},
-					cli.StringFlag{
-						Name:  "asset",
-						Usage: "Asset ID",
-					},
-				},
-			},
 			{
 				Name:        "multisig",
 				Usage:       "work with multisig address",
@@ -247,46 +218,18 @@ func claimGas(ctx *cli.Context) error {
 	if err != nil {
 		return cli.NewExitError(err, 1)
 	}
-	info, err := c.GetClaimable(addrFlag.String())
-	if err != nil {
-		return cli.NewExitError(err, 1)
-	} else if info.Unclaimed == 0 || len(info.Spents) == 0 {
-		fmt.Println("Nothing to claim")
-		return nil
-	}
-
-	var claim transaction.ClaimTX
-	for i := range info.Spents {
-		claim.Claims = append(claim.Claims, transaction.Input{
-			PrevHash:  info.Spents[i].Tx,
-			PrevIndex: uint16(info.Spents[i].N),
-		})
-	}
-
-	tx := transaction.NewClaimTX(&claim)
-	validUntilBlock, err := c.CalculateValidUntilBlock()
+	// Temporary.
+	neoHash, err := util.Uint160DecodeStringLE("3b7d3711c6f0ccf9b1dca903d1bfa1d896f1238c")
 	if err != nil {
 		return cli.NewExitError(err, 1)
 	}
-	tx.ValidUntilBlock = validUntilBlock
-	tx.Sender = scriptHash
 
-	tx.AddOutput(&transaction.Output{
-		AssetID:    core.UtilityTokenID(),
-		Amount:     info.Unclaimed,
-		ScriptHash: scriptHash,
-	})
-
-	err = c.AddNetworkFee(tx, acc)
+	hash, err := c.TransferNEP5(acc, scriptHash, neoHash, 0, 0)
 	if err != nil {
 		return cli.NewExitError(err, 1)
 	}
-	_ = acc.SignTx(tx)
-	if err := c.SendRawTransaction(tx); err != nil {
-		return cli.NewExitError(err, 1)
-	}
 
-	fmt.Println(tx.Hash().StringLE())
+	fmt.Println(hash.StringLE())
 	return nil
 }
 
@@ -477,99 +420,6 @@ func askForConsent() bool {
 	return false
 }
 
-func transferAsset(ctx *cli.Context) error {
-	wall, err := openWallet(ctx.String("path"))
-	if err != nil {
-		return cli.NewExitError(err, 1)
-	}
-	defer wall.Close()
-
-	fromFlag := ctx.Generic("from").(*flags.Address)
-	if !fromFlag.IsSet {
-		return cli.NewExitError("'from' address was not provided", 1)
-	}
-	from := fromFlag.Uint160()
-	acc := wall.GetAccount(from)
-	if acc == nil {
-		return cli.NewExitError(fmt.Errorf("wallet contains no account for '%s'", from), 1)
-	}
-
-	asset, err := getAssetID(ctx.String("asset"))
-	if err != nil {
-		return cli.NewExitError(fmt.Errorf("invalid asset id: %v", err), 1)
-	}
-
-	amount, err := util.Fixed8FromString(ctx.String("amount"))
-	if err != nil {
-		return cli.NewExitError(fmt.Errorf("invalid amount: %v", err), 1)
-	}
-
-	pass, err := readPassword("Enter wallet password > ")
-	if err != nil {
-		return cli.NewExitError(err, 1)
-	} else if err := acc.Decrypt(pass); err != nil {
-		return cli.NewExitError(err, 1)
-	}
-
-	gctx, cancel := getGoContext(ctx)
-	defer cancel()
-
-	c, err := client.New(gctx, ctx.String("rpc"), client.Options{})
-	if err != nil {
-		return cli.NewExitError(err, 1)
-	}
-
-	tx := transaction.NewContractTX()
-	validUntilBlock, err := c.CalculateValidUntilBlock()
-	if err != nil {
-		return cli.NewExitError(err, 1)
-	}
-	tx.ValidUntilBlock = validUntilBlock
-	if err := request.AddInputsAndUnspentsToTx(tx, fromFlag.String(), asset, amount, c); err != nil {
-		return cli.NewExitError(err, 1)
-	}
-	tx.Sender = from
-
-	toFlag := ctx.Generic("to").(*flags.Address)
-	if !toFlag.IsSet {
-		return cli.NewExitError("'to' address was not provided", 1)
-	}
-	toAddr := toFlag.Uint160()
-	tx.AddOutput(&transaction.Output{
-		AssetID:    asset,
-		Amount:     amount,
-		ScriptHash: toAddr,
-		Position:   1,
-	})
-
-	err = c.AddNetworkFee(tx, acc)
-	if err != nil {
-		return cli.NewExitError(err, 1)
-	}
-
-	if outFile := ctx.String("out"); outFile != "" {
-		priv := acc.PrivateKey()
-		pub := priv.PublicKey()
-		sign := priv.Sign(tx.GetSignedPart())
-		c := context2.NewParameterContext("Neo.Core.ContractTransaction", tx)
-		if err := c.AddSignature(acc.Contract, pub, sign); err != nil {
-			return cli.NewExitError(fmt.Errorf("can't add signature: %v", err), 1)
-		} else if data, err := json.Marshal(c); err != nil {
-			return cli.NewExitError(fmt.Errorf("can't marshal tx to JSON: %v", err), 1)
-		} else if err := ioutil.WriteFile(outFile, data, 0644); err != nil {
-			return cli.NewExitError(fmt.Errorf("can't write tx to file: %v", err), 1)
-		}
-	} else {
-		_ = acc.SignTx(tx)
-		if err := c.SendRawTransaction(tx); err != nil {
-			return cli.NewExitError(err, 1)
-		}
-	}
-
-	fmt.Println(tx.Hash().StringLE())
-	return nil
-}
-
 func getGoContext(ctx *cli.Context) (context.Context, func()) {
 	if dur := ctx.Duration("timeout"); dur != 0 {
 		return context.WithTimeout(context.Background(), dur)
@@ -659,18 +509,6 @@ func openWallet(path string) (*wallet.Wallet, error) {
 	return wallet.NewWalletFromFile(path)
 }
 
-func getAssetID(s string) (util.Uint256, error) {
-	s = strings.ToLower(s)
-	switch {
-	case s == "neo":
-		return core.GoverningTokenID(), nil
-	case s == "gas":
-		return core.UtilityTokenID(), nil
-	default:
-		return util.Uint256DecodeStringLE(s)
-	}
-}
-
 func newAccountFromWIF(wif string) (*wallet.Account, error) {
 	// note: NEP2 strings always have length of 58 even though
 	// base58 strings can have different lengths even if slice lengths are equal
diff --git a/config/protocol.mainnet.yml b/config/protocol.mainnet.yml
index 53070ff55..861041637 100644
--- a/config/protocol.mainnet.yml
+++ b/config/protocol.mainnet.yml
@@ -18,9 +18,6 @@ ProtocolConfiguration:
   - seed3.neo.org:10333
   - seed4.neo.org:10333
   - seed5.neo.org:10333
-  SystemFee:
-    IssueTransaction: 500
-    RegisterTransaction: 10000
   VerifyBlocks: true
   VerifyTransactions: false
   FreeGasLimit: 10.0
diff --git a/config/protocol.privnet.docker.four.yml b/config/protocol.privnet.docker.four.yml
index e9bc5e8e1..e2fc0fefe 100644
--- a/config/protocol.privnet.docker.four.yml
+++ b/config/protocol.privnet.docker.four.yml
@@ -14,9 +14,6 @@ ProtocolConfiguration:
     - 172.200.0.2:20334
     - 172.200.0.3:20335
     - 172.200.0.4:20336
-  SystemFee:
-    IssueTransaction: 500
-    RegisterTransaction: 10000
   VerifyBlocks: true
   VerifyTransactions: true
 
diff --git a/config/protocol.privnet.docker.one.yml b/config/protocol.privnet.docker.one.yml
index 06bbad06e..f60ca55ba 100644
--- a/config/protocol.privnet.docker.one.yml
+++ b/config/protocol.privnet.docker.one.yml
@@ -14,9 +14,6 @@ ProtocolConfiguration:
     - 172.200.0.2:20334
     - 172.200.0.3:20335
     - 172.200.0.4:20336
-  SystemFee:
-    IssueTransaction: 500
-    RegisterTransaction: 10000
   VerifyBlocks: true
   VerifyTransactions: true
 
diff --git a/config/protocol.privnet.docker.single.yml b/config/protocol.privnet.docker.single.yml
index 5fdb643bc..f43ffaeed 100644
--- a/config/protocol.privnet.docker.single.yml
+++ b/config/protocol.privnet.docker.single.yml
@@ -8,9 +8,6 @@ ProtocolConfiguration:
     - 02b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc2
   SeedList:
     - 172.200.0.1:20333
-  SystemFee:
-    IssueTransaction: 500
-    RegisterTransaction: 10000
   VerifyBlocks: true
   VerifyTransactions: true
 
diff --git a/config/protocol.privnet.docker.three.yml b/config/protocol.privnet.docker.three.yml
index a59daccbe..620ef90e9 100644
--- a/config/protocol.privnet.docker.three.yml
+++ b/config/protocol.privnet.docker.three.yml
@@ -14,9 +14,6 @@ ProtocolConfiguration:
     - 172.200.0.2:20334
     - 172.200.0.3:20335
     - 172.200.0.4:20336
-  SystemFee:
-    IssueTransaction: 500
-    RegisterTransaction: 10000
   VerifyBlocks: true
   VerifyTransactions: true
 
diff --git a/config/protocol.privnet.docker.two.yml b/config/protocol.privnet.docker.two.yml
index 082ba83b2..01f109416 100644
--- a/config/protocol.privnet.docker.two.yml
+++ b/config/protocol.privnet.docker.two.yml
@@ -14,9 +14,6 @@ ProtocolConfiguration:
     - 172.200.0.2:20334
     - 172.200.0.3:20335
     - 172.200.0.4:20336
-  SystemFee:
-    IssueTransaction: 500
-    RegisterTransaction: 10000
   VerifyBlocks: true
   VerifyTransactions: true
 
diff --git a/config/protocol.privnet.yml b/config/protocol.privnet.yml
index 1a24b933b..e8a1d7185 100644
--- a/config/protocol.privnet.yml
+++ b/config/protocol.privnet.yml
@@ -14,10 +14,6 @@ ProtocolConfiguration:
     - 127.0.0.1:20334
     - 127.0.0.1:20335
     - 127.0.0.1:20336
-  SystemFee:
-    EnrollmentTransaction: 1000
-    IssueTransaction: 500
-    RegisterTransaction: 10000
   VerifyBlocks: true
   VerifyTransactions: true
 
diff --git a/config/protocol.testnet.yml b/config/protocol.testnet.yml
index 50b857115..785f3a429 100644
--- a/config/protocol.testnet.yml
+++ b/config/protocol.testnet.yml
@@ -18,9 +18,6 @@ ProtocolConfiguration:
   - seed3t.neo.org:20333
   - seed4t.neo.org:20333
   - seed5t.neo.org:20333
-  SystemFee:
-    IssueTransaction: 5
-    RegisterTransaction: 100
   VerifyBlocks: true
   VerifyTransactions: false
   FreeGasLimit: 10.0
diff --git a/config/protocol.unit_testnet.yml b/config/protocol.unit_testnet.yml
index 37424cc3d..e786558a7 100644
--- a/config/protocol.unit_testnet.yml
+++ b/config/protocol.unit_testnet.yml
@@ -13,9 +13,6 @@ ProtocolConfiguration:
     - 127.0.0.1:20334
     - 127.0.0.1:20335
     - 127.0.0.1:20336
-  SystemFee:
-    IssueTransaction: 500
-    RegisterTransaction: 10000
   VerifyBlocks: true
   VerifyTransactions: true
 
diff --git a/docs/cli.md b/docs/cli.md
index 0c4f04567..f199cbc3a 100644
--- a/docs/cli.md
+++ b/docs/cli.md
@@ -59,10 +59,6 @@ ProtocolConfiguration:
   - 127.0.0.1:20334
   - 127.0.0.1:20335
   - 127.0.0.1:20336
-  SystemFee:
-    EnrollmentTransaction: 1000
-    IssueTransaction: 500
-    RegisterTransaction: 10000
 
 ApplicationConfiguration:
   DataDirectoryPath: "./chains/privnet"
diff --git a/docs/rpc.md b/docs/rpc.md
index ba025c07d..6d0b2f235 100644
--- a/docs/rpc.md
+++ b/docs/rpc.md
@@ -34,16 +34,13 @@ which would yield the response:
 
 | Method  |
 | ------- |
-| `getaccountstate` |
 | `getapplicationlog` |
-| `getassetstate` |
 | `getbestblockhash` |
 | `getblock` |
 | `getblockcount` |
 | `getblockhash` |
 | `getblockheader` |
 | `getblocksysfee` |
-| `getclaimable` |
 | `getconnectioncount` |
 | `getcontractstate` |
 | `getnep5balances` |
@@ -53,9 +50,7 @@ which would yield the response:
 | `getrawtransaction` |
 | `getstorage` |
 | `gettransactionheight` |
-| `gettxout` |
-| `getunclaimed` |
-| `getunspents` |
+| `getunclaimedgas` |
 | `getvalidators` |
 | `getversion` |
 | `invoke` |
@@ -77,6 +72,11 @@ in returning it.
 
 Both methods also don't currently support arrays in function parameters.
 
+##### `getunclaimedgas`
+
+It's possible to call this method for any address with neo-go, unlike with C#
+node where it only works for addresses from opened wallet.
+
 ### Unsupported methods
 
 Methods listed down below are not going to be supported for various reasons
@@ -86,10 +86,9 @@ and we're not accepting issues related to them.
 | ------- | ------------|
 | `claimgas` | Doesn't fit neo-go wallet model, use CLI to do that |
 | `dumpprivkey` | Shouldn't exist for security reasons, see `claimgas` comment also |
-| `getbalance` | Use `getaccountstate` instead, see `claimgas` comment also |
+| `getbalance` | To be implemented |
 | `getmetricblocktimestamp` | Not really useful, use other means for node monitoring |
 | `getnewaddress` | See `claimgas` comment |
-| `getunclaimedgas` | Use `getunclaimed` instead, see `claimgas` comment also |
 | `getwalletheight` | Not applicable to neo-go, see `claimgas` comment |
 | `importprivkey` | Not applicable to neo-go, see `claimgas` comment |
 | `listaddress` | Not applicable to neo-go, see `claimgas` comment |
diff --git a/integration/performance_test.go b/integration/performance_test.go
index d5e80e03b..68592cc87 100644
--- a/integration/performance_test.go
+++ b/integration/performance_test.go
@@ -77,7 +77,7 @@ func getTX(t *testing.B, wif *keys.WIF) *transaction.Transaction {
 	fromAddressHash, err := address.StringToUint160(fromAddress)
 	require.NoError(t, err)
 
-	tx := transaction.NewInvocationTX([]byte{0x51}, 1)
+	tx := transaction.New([]byte{0x51}, 1)
 	tx.Version = 0
 	tx.Sender = fromAddressHash
 	tx.Attributes = append(tx.Attributes,
diff --git a/pkg/compiler/syscall.go b/pkg/compiler/syscall.go
index c002d2bd7..ef1502cb8 100644
--- a/pkg/compiler/syscall.go
+++ b/pkg/compiler/syscall.go
@@ -40,7 +40,6 @@ var syscalls = map[string]map[string]string{
 	},
 	"blockchain": {
 		"GetAccount":           "Neo.Blockchain.GetAccount",
-		"GetAsset":             "Neo.Blockchain.GetAsset",
 		"GetBlock":             "Neo.Blockchain.GetBlock",
 		"GetContract":          "Neo.Blockchain.GetContract",
 		"GetHeader":            "Neo.Blockchain.GetHeader",
@@ -65,27 +64,9 @@ var syscalls = map[string]map[string]string{
 		"GetTransaction":      "Neo.Block.GetTransaction",
 	},
 	"transaction": {
-		"GetAttributes":   "Neo.Transaction.GetAttributes",
-		"GetHash":         "Neo.Transaction.GetHash",
-		"GetInputs":       "Neo.Transaction.GetInputs",
-		"GetOutputs":      "Neo.Transaction.GetOutputs",
-		"GetReferences":   "Neo.Transaction.GetReferences",
-		"GetScript":       "Neo.InvocationTransaction.GetScript",
-		"GetType":         "Neo.Transaction.GetType",
-		"GetUnspentCoins": "Neo.Transaction.GetUnspentCoins",
-		"GetWitnesses":    "Neo.Transaction.GetWitnesses",
-	},
-	"asset": {
-		"Create":       "Neo.Asset.Create",
-		"GetAdmin":     "Neo.Asset.GetAdmin",
-		"GetAmount":    "Neo.Asset.GetAmount",
-		"GetAssetID":   "Neo.Asset.GetAssetID",
-		"GetAssetType": "Neo.Asset.GetAssetType",
-		"GetAvailable": "Neo.Asset.GetAvailable",
-		"GetIssuer":    "Neo.Asset.GetIssuer",
-		"GetOwner":     "Neo.Asset.GetOwner",
-		"GetPrecision": "Neo.Asset.GetPrecision",
-		"Renew":        "Neo.Asset.Renew",
+		"GetAttributes": "Neo.Transaction.GetAttributes",
+		"GetHash":       "Neo.Transaction.GetHash",
+		"GetWitnesses":  "Neo.Transaction.GetWitnesses",
 	},
 	"contract": {
 		"GetScript":         "Neo.Contract.GetScript",
@@ -95,15 +76,6 @@ var syscalls = map[string]map[string]string{
 		"Migrate":           "Neo.Contract.Migrate",
 		"GetStorageContext": "Neo.Contract.GetStorageContext",
 	},
-	"input": {
-		"GetHash":  "Neo.Input.GetHash",
-		"GetIndex": "Neo.Input.GetIndex",
-	},
-	"output": {
-		"GetAssetID":    "Neo.Output.GetAssetID",
-		"GetValue":      "Neo.Output.GetValue",
-		"GetScriptHash": "Neo.Output.GetScriptHash",
-	},
 	"engine": {
 		"GetScriptContainer":     "System.ExecutionEngine.GetScriptContainer",
 		"GetCallingScriptHash":   "System.ExecutionEngine.GetCallingScriptHash",
diff --git a/pkg/config/config.go b/pkg/config/config.go
index 999656ffb..f434191bd 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -40,9 +40,6 @@ func Load(path string, netMode NetMode) (Config, error) {
 	}
 
 	config := Config{
-		ProtocolConfiguration: ProtocolConfiguration{
-			SystemFee: SystemFee{},
-		},
 		ApplicationConfiguration: ApplicationConfiguration{
 			PingInterval: 30,
 			PingTimeout:  90,
diff --git a/pkg/config/protocol_config.go b/pkg/config/protocol_config.go
index 421e3ff9b..94c5e452d 100644
--- a/pkg/config/protocol_config.go
+++ b/pkg/config/protocol_config.go
@@ -1,7 +1,6 @@
 package config
 
 import (
-	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
@@ -34,23 +33,16 @@ type (
 		MaxFreeTransactionsPerBlock int `yaml:"MaxFreeTransactionsPerBlock"`
 		MemPoolSize                 int `yaml:"MemPoolSize"`
 		// SaveStorageBatch enables storage batch saving before every persist.
-		SaveStorageBatch  bool      `yaml:"SaveStorageBatch"`
-		SecondsPerBlock   int       `yaml:"SecondsPerBlock"`
-		SeedList          []string  `yaml:"SeedList"`
-		StandbyValidators []string  `yaml:"StandbyValidators"`
-		SystemFee         SystemFee `yaml:"SystemFee"`
+		SaveStorageBatch  bool     `yaml:"SaveStorageBatch"`
+		SecondsPerBlock   int      `yaml:"SecondsPerBlock"`
+		SeedList          []string `yaml:"SeedList"`
+		StandbyValidators []string `yaml:"StandbyValidators"`
 		// Whether to verify received blocks.
 		VerifyBlocks bool `yaml:"VerifyBlocks"`
 		// Whether to verify transactions in received blocks.
 		VerifyTransactions bool `yaml:"VerifyTransactions"`
 	}
 
-	// SystemFee fees related to system.
-	SystemFee struct {
-		IssueTransaction    int64 `yaml:"IssueTransaction"`
-		RegisterTransaction int64 `yaml:"RegisterTransaction"`
-	}
-
 	// NetMode describes the mode the blockchain will operate on.
 	NetMode uint32
 )
@@ -70,15 +62,3 @@ func (n NetMode) String() string {
 		return "net unknown"
 	}
 }
-
-// TryGetValue returns the system fee base on transaction type.
-func (s SystemFee) TryGetValue(txType transaction.TXType) util.Fixed8 {
-	switch txType {
-	case transaction.IssueType:
-		return util.Fixed8FromInt64(s.IssueTransaction)
-	case transaction.RegisterType:
-		return util.Fixed8FromInt64(s.RegisterTransaction)
-	default:
-		return util.Fixed8FromInt64(0)
-	}
-}
diff --git a/pkg/consensus/block_test.go b/pkg/consensus/block_test.go
index 6e1d91f4e..312da1199 100644
--- a/pkg/consensus/block_test.go
+++ b/pkg/consensus/block_test.go
@@ -8,6 +8,7 @@ import (
 	"github.com/nspcc-dev/dbft/crypto"
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/stretchr/testify/require"
 )
 
@@ -44,7 +45,7 @@ func TestNeoBlock_Setters(t *testing.T) {
 	b.Block.PrevHash = util.Uint256{9, 8, 7}
 	require.Equal(t, util.Uint256{9, 8, 7}, b.PrevHash())
 
-	txx := []block.Transaction{transaction.NewIssueTX()}
+	txx := []block.Transaction{transaction.New([]byte{byte(opcode.PUSH1)}, 1)}
 	b.SetTransactions(txx)
 	require.Equal(t, txx, b.Transactions())
 }
diff --git a/pkg/consensus/consensus.go b/pkg/consensus/consensus.go
index 190f3577c..e0098f70e 100644
--- a/pkg/consensus/consensus.go
+++ b/pkg/consensus/consensus.go
@@ -12,7 +12,6 @@ import (
 	"github.com/nspcc-dev/dbft/payload"
 	coreb "github.com/nspcc-dev/neo-go/pkg/core/block"
 	"github.com/nspcc-dev/neo-go/pkg/core/blockchainer"
-	"github.com/nspcc-dev/neo-go/pkg/core/mempool"
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/nspcc-dev/neo-go/pkg/io"
@@ -394,13 +393,13 @@ func (s *service) getBlock(h util.Uint256) block.Block {
 func (s *service) getVerifiedTx(count int) []block.Transaction {
 	pool := s.Config.Chain.GetMemPool()
 
-	var txx []mempool.TxWithFee
+	var txx []*transaction.Transaction
 
 	if s.dbft.ViewNumber > 0 {
-		txx = make([]mempool.TxWithFee, 0, len(s.lastProposal))
+		txx = make([]*transaction.Transaction, 0, len(s.lastProposal))
 		for i := range s.lastProposal {
-			if tx, fee, ok := pool.TryGetValue(s.lastProposal[i]); ok {
-				txx = append(txx, mempool.TxWithFee{Tx: tx, Fee: fee})
+			if tx, ok := pool.TryGetValue(s.lastProposal[i]); ok {
+				txx = append(txx, tx)
 			}
 		}
 
@@ -417,7 +416,7 @@ func (s *service) getVerifiedTx(count int) []block.Transaction {
 
 	res := make([]block.Transaction, len(txx))
 	for i := range txx {
-		res[i] = txx[i].Tx
+		res[i] = txx[i]
 	}
 
 	return res
diff --git a/pkg/consensus/consensus_test.go b/pkg/consensus/consensus_test.go
index 0b8d3dfc3..44ef14532 100644
--- a/pkg/consensus/consensus_test.go
+++ b/pkg/consensus/consensus_test.go
@@ -15,6 +15,7 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/nspcc-dev/neo-go/pkg/wallet"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/zap/zaptest"
@@ -22,7 +23,7 @@ import (
 
 func TestNewService(t *testing.T) {
 	srv := newTestService(t)
-	tx := transaction.NewContractTX()
+	tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 	tx.ValidUntilBlock = 1
 	addSender(t, tx)
 	signTx(t, srv.Chain.FeePerByte(), tx)
@@ -39,7 +40,7 @@ func TestService_GetVerified(t *testing.T) {
 	srv := newTestService(t)
 	var txs []*transaction.Transaction
 	for i := 0; i < 4; i++ {
-		tx := transaction.NewContractTX()
+		tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 		tx.Nonce = 123 + uint32(i)
 		tx.ValidUntilBlock = 1
 		txs = append(txs, tx)
@@ -53,7 +54,7 @@ func TestService_GetVerified(t *testing.T) {
 	p := new(Payload)
 	p.message = &message{}
 	p.SetType(payload.PrepareRequestType)
-	tx := transaction.NewContractTX()
+	tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 	tx.Nonce = 999
 	p.SetPayload(&prepareRequest{transactionHashes: hashes})
 	p.SetValidatorIndex(1)
@@ -120,7 +121,7 @@ func TestService_getTx(t *testing.T) {
 	srv := newTestService(t)
 
 	t.Run("transaction in mempool", func(t *testing.T) {
-		tx := transaction.NewContractTX()
+		tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 		tx.Nonce = 1234
 		tx.ValidUntilBlock = 1
 		addSender(t, tx)
@@ -137,7 +138,7 @@ func TestService_getTx(t *testing.T) {
 	})
 
 	t.Run("transaction in local cache", func(t *testing.T) {
-		tx := transaction.NewContractTX()
+		tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 		tx.Nonce = 4321
 		tx.ValidUntilBlock = 1
 		h := tx.Hash()
diff --git a/pkg/core/block/block.go b/pkg/core/block/block.go
index 14c39ce51..54d88fa31 100644
--- a/pkg/core/block/block.go
+++ b/pkg/core/block/block.go
@@ -160,6 +160,9 @@ func (b *Block) DecodeBinary(br *io.BinReader) {
 		txes[i] = tx
 	}
 	b.Transactions = txes
+	if br.Err != nil {
+		return
+	}
 	br.Err = b.Verify()
 }
 
@@ -227,5 +230,8 @@ func (b *Block) UnmarshalJSON(data []byte) error {
 	b.Base = *base
 	b.Transactions = auxb.Transactions
 	b.ConsensusData = auxb.ConsensusData
+	// Some tests rely on hash presence and we're usually precomputing
+	// other hashes upon deserialization.
+	_ = b.ConsensusData.Hash()
 	return nil
 }
diff --git a/pkg/core/block/block_test.go b/pkg/core/block/block_test.go
index b9f6dc72d..01a8d7b73 100644
--- a/pkg/core/block/block_test.go
+++ b/pkg/core/block/block_test.go
@@ -5,6 +5,7 @@ import (
 
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -84,7 +85,7 @@ func newDumbBlock() *Block {
 			Nonce:        1111,
 		},
 		Transactions: []*transaction.Transaction{
-			transaction.NewIssueTX(),
+			transaction.New([]byte{byte(opcode.PUSH1)}, 0),
 		},
 	}
 }
diff --git a/pkg/core/blockchain.go b/pkg/core/blockchain.go
index 7155b7734..1979b39d6 100644
--- a/pkg/core/blockchain.go
+++ b/pkg/core/blockchain.go
@@ -2,7 +2,6 @@ package core
 
 import (
 	"fmt"
-	"math"
 	"math/big"
 	"sort"
 	"sync"
@@ -33,13 +32,6 @@ const (
 	headerBatchCount = 2000
 	version          = "0.1.0"
 
-	// This one comes from C# code and it's different from the constant used
-	// when creating an asset with Neo.Asset.Create interop call. It looks
-	// like 2000000 is coming from the decrementInterval, but C# code doesn't
-	// contain any relationship between the two, so we should follow this
-	// behavior.
-	registeredAssetLifetime = 2 * 2000000
-
 	defaultMemPoolSize = 50000
 )
 
@@ -370,20 +362,18 @@ func (bc *Blockchain) notificationDispatcher() {
 			if len(txFeed) != 0 || len(notificationFeed) != 0 || len(executionFeed) != 0 {
 				var aerIdx int
 				for _, tx := range event.block.Transactions {
-					if tx.Type == transaction.InvocationType {
-						aer := event.appExecResults[aerIdx]
-						if !aer.TxHash.Equals(tx.Hash()) {
-							panic("inconsistent application execution results")
-						}
-						aerIdx++
-						for ch := range executionFeed {
-							ch <- aer
-						}
-						if aer.VMState == "HALT" {
-							for i := range aer.Events {
-								for ch := range notificationFeed {
-									ch <- &aer.Events[i]
-								}
+					aer := event.appExecResults[aerIdx]
+					if !aer.TxHash.Equals(tx.Hash()) {
+						panic("inconsistent application execution results")
+					}
+					aerIdx++
+					for ch := range executionFeed {
+						ch <- aer
+					}
+					if aer.VMState == "HALT" {
+						for i := range aer.Events {
+							for ch := range notificationFeed {
+								ch <- &aer.Events[i]
 							}
 						}
 					}
@@ -536,7 +526,6 @@ func (bc *Blockchain) processHeader(h *block.Header, batch storage.Batch, header
 	}
 
 	buf.Reset()
-	buf.BinWriter.WriteU32LE(0) // sys fee is yet to be calculated
 	h.EncodeBinary(buf.BinWriter)
 	if buf.Err != nil {
 		return buf.Err
@@ -549,13 +538,6 @@ func (bc *Blockchain) processHeader(h *block.Header, batch storage.Batch, header
 	return nil
 }
 
-// getSystemFeeAmount returns sum of all system fees for blocks up to h.
-// and 0 if no such block exists.
-func (bc *Blockchain) getSystemFeeAmount(h util.Uint256) uint32 {
-	_, sf, _ := bc.dao.GetBlock(h)
-	return sf
-}
-
 // TODO: storeBlock needs some more love, its implemented as in the original
 // project. This for the sake of development speed and understanding of what
 // is happening here, quite allot as you can see :). If things are wired together
@@ -563,11 +545,7 @@ func (bc *Blockchain) getSystemFeeAmount(h util.Uint256) uint32 {
 func (bc *Blockchain) storeBlock(block *block.Block) error {
 	cache := dao.NewCached(bc.dao)
 	appExecResults := make([]*state.AppExecResult, 0, len(block.Transactions))
-	fee := bc.getSystemFeeAmount(block.PrevHash)
-	for _, tx := range block.Transactions {
-		fee += uint32(tx.SystemFee.IntegralValue())
-	}
-	if err := cache.StoreAsBlock(block, fee); err != nil {
+	if err := cache.StoreAsBlock(block); err != nil {
 		return err
 	}
 
@@ -580,226 +558,75 @@ func (bc *Blockchain) storeBlock(block *block.Block) error {
 			return err
 		}
 
-		if err := cache.PutUnspentCoinState(tx.Hash(), state.NewUnspentCoin(block.Index, tx)); err != nil {
-			return err
+		systemInterop := bc.newInteropContext(trigger.Application, cache, block, tx)
+		v := SpawnVM(systemInterop)
+		v.LoadScript(tx.Script)
+		v.SetPriceGetter(getPrice)
+		if bc.config.FreeGasLimit > 0 {
+			v.SetGasLimit(bc.config.FreeGasLimit + tx.SystemFee)
 		}
 
-		// Process TX outputs.
-		if err := processOutputs(tx, cache); err != nil {
-			return err
-		}
-
-		// Process TX inputs that are grouped by previous hash.
-		for _, inputs := range transaction.GroupInputsByPrevHash(tx.Inputs) {
-			prevHash := inputs[0].PrevHash
-			unspent, err := cache.GetUnspentCoinState(prevHash)
+		err := v.Run()
+		if !v.HasFailed() {
+			_, err := systemInterop.DAO.Persist()
 			if err != nil {
-				return err
+				return errors.Wrap(err, "failed to persist invocation results")
 			}
-			for _, input := range inputs {
-				if len(unspent.States) <= int(input.PrevIndex) {
-					return fmt.Errorf("bad input: %s/%d", input.PrevHash.StringLE(), input.PrevIndex)
+			for _, note := range systemInterop.Notifications {
+				arr, ok := note.Item.Value().([]vm.StackItem)
+				if !ok || len(arr) != 4 {
+					continue
 				}
-				if unspent.States[input.PrevIndex].State&state.CoinSpent != 0 {
-					return fmt.Errorf("double spend: %s/%d", input.PrevHash.StringLE(), input.PrevIndex)
+				op, ok := arr[0].Value().([]byte)
+				if !ok || (string(op) != "transfer" && string(op) != "Transfer") {
+					continue
 				}
-				unspent.States[input.PrevIndex].State |= state.CoinSpent
-				unspent.States[input.PrevIndex].SpendHeight = block.Index
-				prevTXOutput := &unspent.States[input.PrevIndex].Output
-				account, err := cache.GetAccountStateOrNew(prevTXOutput.ScriptHash)
-				if err != nil {
-					return err
-				}
-
-				if prevTXOutput.AssetID.Equals(GoverningTokenID()) {
-					err = account.Unclaimed.Put(&state.UnclaimedBalance{
-						Tx:    input.PrevHash,
-						Index: input.PrevIndex,
-						Start: unspent.Height,
-						End:   block.Index,
-						Value: prevTXOutput.Amount,
-					})
-					if err != nil {
-						return err
-					}
-				}
-
-				balancesLen := len(account.Balances[prevTXOutput.AssetID])
-				if balancesLen <= 1 {
-					delete(account.Balances, prevTXOutput.AssetID)
-				} else {
-					var index = -1
-					for i, balance := range account.Balances[prevTXOutput.AssetID] {
-						if balance.Tx.Equals(input.PrevHash) && balance.Index == input.PrevIndex {
-							index = i
-							break
-						}
-					}
-					if index >= 0 {
-						last := balancesLen - 1
-						if last > index {
-							account.Balances[prevTXOutput.AssetID][index] = account.Balances[prevTXOutput.AssetID][last]
-						}
-						account.Balances[prevTXOutput.AssetID] = account.Balances[prevTXOutput.AssetID][:last]
-					}
-				}
-				if err = cache.PutAccountState(account); err != nil {
-					return err
-				}
-			}
-			if err = cache.PutUnspentCoinState(prevHash, unspent); err != nil {
-				return err
-			}
-		}
-
-		// Process the underlying type of the TX.
-		switch t := tx.Data.(type) {
-		case *transaction.RegisterTX:
-			err := cache.PutAssetState(&state.Asset{
-				ID:         tx.Hash(),
-				AssetType:  t.AssetType,
-				Name:       t.Name,
-				Amount:     t.Amount,
-				Precision:  t.Precision,
-				Owner:      t.Owner,
-				Admin:      t.Admin,
-				Expiration: bc.BlockHeight() + registeredAssetLifetime,
-			})
-			if err != nil {
-				return err
-			}
-		case *transaction.IssueTX:
-			for _, res := range bc.GetTransactionResults(tx) {
-				if res.Amount < 0 {
-					asset, err := cache.GetAssetState(res.AssetID)
-					if asset == nil || err != nil {
-						return fmt.Errorf("issue failed: no asset %s or error %s", res.AssetID, err)
-					}
-					asset.Available -= res.Amount
-					if err := cache.PutAssetState(asset); err != nil {
-						return err
-					}
-				}
-			}
-		case *transaction.ClaimTX:
-			// Remove claimed NEO from spent coins making it unavalaible for
-			// additional claims.
-			for _, input := range t.Claims {
-				scs, err := cache.GetUnspentCoinState(input.PrevHash)
-				if err == nil {
-					if len(scs.States) <= int(input.PrevIndex) {
-						err = errors.New("invalid claim index")
-					} else if scs.States[input.PrevIndex].State&state.CoinClaimed != 0 {
-						err = errors.New("double claim")
-					}
-				}
-				if err != nil {
-					// We can't really do anything about it
-					// as it's a transaction in a signed block.
-					bc.log.Warn("FALSE OR DOUBLE CLAIM",
-						zap.String("PrevHash", input.PrevHash.StringLE()),
-						zap.Uint16("PrevIndex", input.PrevIndex),
-						zap.String("tx", tx.Hash().StringLE()),
-						zap.Uint32("block", block.Index),
-					)
-					// "Strict" mode.
-					if bc.config.VerifyTransactions {
-						return err
-					}
-					break
-				}
-
-				acc, err := cache.GetAccountState(scs.States[input.PrevIndex].ScriptHash)
-				if err != nil {
-					return err
-				}
-
-				scs.States[input.PrevIndex].State |= state.CoinClaimed
-				if err = cache.PutUnspentCoinState(input.PrevHash, scs); err != nil {
-					return err
-				}
-
-				changed := acc.Unclaimed.Remove(input.PrevHash, input.PrevIndex)
-				if !changed {
-					bc.log.Warn("no spent coin in the account",
-						zap.String("tx", tx.Hash().StringLE()),
-						zap.String("input", input.PrevHash.StringLE()),
-						zap.String("account", acc.ScriptHash.String()))
-				} else if err := cache.PutAccountState(acc); err != nil {
-					return err
-				}
-			}
-		case *transaction.InvocationTX:
-			systemInterop := bc.newInteropContext(trigger.Application, cache, block, tx)
-			v := SpawnVM(systemInterop)
-			v.LoadScript(t.Script)
-			v.SetPriceGetter(getPrice)
-			if bc.config.FreeGasLimit > 0 {
-				v.SetGasLimit(bc.config.FreeGasLimit + t.Gas)
-			}
-
-			err := v.Run()
-			if !v.HasFailed() {
-				_, err := systemInterop.DAO.Persist()
-				if err != nil {
-					return errors.Wrap(err, "failed to persist invocation results")
-				}
-				for _, note := range systemInterop.Notifications {
-					arr, ok := note.Item.Value().([]vm.StackItem)
-					if !ok || len(arr) != 4 {
-						continue
-					}
-					op, ok := arr[0].Value().([]byte)
-					if !ok || (string(op) != "transfer" && string(op) != "Transfer") {
-						continue
-					}
-					var from []byte
-					fromValue := arr[1].Value()
-					// we don't have `from` set when we are minting tokens
-					if fromValue != nil {
-						from, ok = fromValue.([]byte)
-						if !ok {
-							continue
-						}
-					}
-					var to []byte
-					toValue := arr[2].Value()
-					// we don't have `to` set when we are burning tokens
-					if toValue != nil {
-						to, ok = toValue.([]byte)
-						if !ok {
-							continue
-						}
-					}
-					amount, ok := arr[3].Value().(*big.Int)
+				var from []byte
+				fromValue := arr[1].Value()
+				// we don't have `from` set when we are minting tokens
+				if fromValue != nil {
+					from, ok = fromValue.([]byte)
 					if !ok {
-						bs, ok := arr[3].Value().([]byte)
-						if !ok {
-							continue
-						}
-						amount = emit.BytesToInt(bs)
+						continue
 					}
-					bc.processNEP5Transfer(cache, tx, block, note.ScriptHash, from, to, amount.Int64())
 				}
-			} else {
-				bc.log.Warn("contract invocation failed",
-					zap.String("tx", tx.Hash().StringLE()),
-					zap.Uint32("block", block.Index),
-					zap.Error(err))
-			}
-			aer := &state.AppExecResult{
-				TxHash:      tx.Hash(),
-				Trigger:     trigger.Application,
-				VMState:     v.State(),
-				GasConsumed: v.GasConsumed(),
-				Stack:       v.Estack().ToContractParameters(),
-				Events:      systemInterop.Notifications,
-			}
-			appExecResults = append(appExecResults, aer)
-			err = cache.PutAppExecResult(aer)
-			if err != nil {
-				return errors.Wrap(err, "failed to Store notifications")
+				var to []byte
+				toValue := arr[2].Value()
+				// we don't have `to` set when we are burning tokens
+				if toValue != nil {
+					to, ok = toValue.([]byte)
+					if !ok {
+						continue
+					}
+				}
+				amount, ok := arr[3].Value().(*big.Int)
+				if !ok {
+					bs, ok := arr[3].Value().([]byte)
+					if !ok {
+						continue
+					}
+					amount = emit.BytesToInt(bs)
+				}
+				bc.processNEP5Transfer(cache, tx, block, note.ScriptHash, from, to, amount.Int64())
 			}
+		} else {
+			bc.log.Warn("contract invocation failed",
+				zap.String("tx", tx.Hash().StringLE()),
+				zap.Uint32("block", block.Index),
+				zap.Error(err))
+		}
+		aer := &state.AppExecResult{
+			TxHash:      tx.Hash(),
+			Trigger:     trigger.Application,
+			VMState:     v.State(),
+			GasConsumed: v.GasConsumed(),
+			Stack:       v.Estack().ToContractParameters(),
+			Events:      systemInterop.Notifications,
+		}
+		appExecResults = append(appExecResults, aer)
+		err = cache.PutAppExecResult(aer)
+		if err != nil {
+			return errors.Wrap(err, "failed to Store notifications")
 		}
 	}
 
@@ -927,7 +754,22 @@ func (bc *Blockchain) GetNEP5Balances(acc util.Uint160) *state.NEP5Balances {
 
 // GetUtilityTokenBalance returns utility token (GAS) balance for the acc.
 func (bc *Blockchain) GetUtilityTokenBalance(acc util.Uint160) util.Fixed8 {
-	return util.Fixed8FromInt64(bc.GetNEP5Balances(acc).Trackers[bc.contracts.GAS.Hash].Balance)
+	bs, err := bc.dao.GetNEP5Balances(acc)
+	if err != nil {
+		return 0
+	}
+	return util.Fixed8(bs.Trackers[bc.contracts.GAS.Hash].Balance)
+}
+
+// GetGoverningTokenBalance returns governing token (NEO) balance and the height
+// of the last balance change for the account.
+func (bc *Blockchain) GetGoverningTokenBalance(acc util.Uint160) (util.Fixed8, uint32) {
+	bs, err := bc.dao.GetNEP5Balances(acc)
+	if err != nil {
+		return 0, 0
+	}
+	neo := bs.Trackers[bc.contracts.NEO.Hash]
+	return util.Fixed8(neo.Balance), neo.LastUpdatedBlock
 }
 
 // LastBatch returns last persisted storage batch.
@@ -935,25 +777,6 @@ func (bc *Blockchain) LastBatch() *storage.MemBatch {
 	return bc.lastBatch
 }
 
-// processOutputs processes transaction outputs.
-func processOutputs(tx *transaction.Transaction, dao *dao.Cached) error {
-	for index, output := range tx.Outputs {
-		account, err := dao.GetAccountStateOrNew(output.ScriptHash)
-		if err != nil {
-			return err
-		}
-		account.Balances[output.AssetID] = append(account.Balances[output.AssetID], state.UnspentBalance{
-			Tx:    tx.Hash(),
-			Index: uint16(index),
-			Value: output.Amount,
-		})
-		if err = dao.PutAccountState(account); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
 // persist flushes current in-memory Store contents to the persistent storage.
 func (bc *Blockchain) persist() error {
 	var (
@@ -1002,7 +825,7 @@ func (bc *Blockchain) headerListLen() (n int) {
 
 // GetTransaction returns a TX and its height by the given hash.
 func (bc *Blockchain) GetTransaction(hash util.Uint256) (*transaction.Transaction, uint32, error) {
-	if tx, _, ok := bc.memPool.TryGetValue(hash); ok {
+	if tx, ok := bc.memPool.TryGetValue(hash); ok {
 		return tx, 0, nil // the height is not actually defined for memPool transaction. Not sure if zero is a good number in this case.
 	}
 	return bc.dao.GetTransaction(hash)
@@ -1033,7 +856,7 @@ func (bc *Blockchain) GetBlock(hash util.Uint256) (*block.Block, error) {
 		}
 	}
 
-	block, _, err := bc.dao.GetBlock(hash)
+	block, err := bc.dao.GetBlock(hash)
 	if err != nil {
 		return nil, err
 	}
@@ -1055,7 +878,7 @@ func (bc *Blockchain) GetHeader(hash util.Uint256) (*block.Header, error) {
 			return tb.Header(), nil
 		}
 	}
-	block, _, err := bc.dao.GetBlock(hash)
+	block, err := bc.dao.GetBlock(hash)
 	if err != nil {
 		return nil, err
 	}
@@ -1115,17 +938,6 @@ func (bc *Blockchain) HeaderHeight() uint32 {
 	return uint32(bc.headerListLen() - 1)
 }
 
-// GetAssetState returns asset state from its assetID.
-func (bc *Blockchain) GetAssetState(assetID util.Uint256) *state.Asset {
-	asset, err := bc.dao.GetAssetState(assetID)
-	if asset == nil && err != storage.ErrKeyNotFound {
-		bc.log.Warn("failed to get asset state",
-			zap.Stringer("asset", assetID),
-			zap.Error(err))
-	}
-	return asset
-}
-
 // GetContractState returns contract by its script hash.
 func (bc *Blockchain) GetContractState(hash util.Uint160) *state.Contract {
 	contract, err := bc.dao.GetContractState(hash)
@@ -1144,15 +956,6 @@ func (bc *Blockchain) GetAccountState(scriptHash util.Uint160) *state.Account {
 	return as
 }
 
-// GetUnspentCoinState returns unspent coin state for given tx hash.
-func (bc *Blockchain) GetUnspentCoinState(hash util.Uint256) *state.UnspentCoin {
-	ucs, err := bc.dao.GetUnspentCoinState(hash)
-	if ucs == nil && err != storage.ErrKeyNotFound {
-		bc.log.Warn("failed to get unspent coin state", zap.Error(err))
-	}
-	return ucs
-}
-
 // GetConfig returns the config stored in the blockchain.
 func (bc *Blockchain) GetConfig() config.ProtocolConfiguration {
 	return bc.config
@@ -1220,10 +1023,11 @@ func (bc *Blockchain) UnsubscribeFromExecutions(ch chan<- *state.AppExecResult)
 	bc.unsubCh <- ch
 }
 
-// CalculateClaimable calculates the amount of GAS which can be claimed for a transaction with value.
-// First return value is GAS generated between startHeight and endHeight.
-// Second return value is GAS returned from accumulated SystemFees between startHeight and endHeight.
-func (bc *Blockchain) CalculateClaimable(value util.Fixed8, startHeight, endHeight uint32) (util.Fixed8, util.Fixed8, error) {
+// CalculateClaimable calculates the amount of GAS generated by owning specified
+// amount of NEO between specified blocks. The amount of NEO being passed is in
+// its natural non-divisible form (1 NEO as 1, 2 NEO as 2, no multiplication by
+// 10⁸ is neeeded as for Fixed8).
+func (bc *Blockchain) CalculateClaimable(value int64, startHeight, endHeight uint32) util.Fixed8 {
 	var amount util.Fixed8
 	di := uint32(bc.decrementInterval)
 
@@ -1249,47 +1053,7 @@ func (bc *Blockchain) CalculateClaimable(value util.Fixed8, startHeight, endHeig
 		amount += util.Fixed8(iend-istart) * util.Fixed8(bc.generationAmount[ustart])
 	}
 
-	if startHeight == 0 {
-		startHeight++
-	}
-	h := bc.GetHeaderHash(int(startHeight - 1))
-	feeStart := bc.getSystemFeeAmount(h)
-	h = bc.GetHeaderHash(int(endHeight - 1))
-	feeEnd := bc.getSystemFeeAmount(h)
-
-	sysFeeTotal := util.Fixed8(feeEnd - feeStart)
-	ratio := value / 100000000
-	return amount * ratio, sysFeeTotal * ratio, nil
-}
-
-// References maps transaction's inputs into a slice of InOuts, effectively
-// joining each Input with the corresponding Output.
-// @TODO: unfortunately we couldn't attach this method to the Transaction struct in the
-// transaction package because of a import cycle problem. Perhaps we should think to re-design
-// the code base to avoid this situation.
-func (bc *Blockchain) References(t *transaction.Transaction) ([]transaction.InOut, error) {
-	return bc.references(t.Inputs)
-}
-
-// references is an internal implementation of References that operates directly
-// on a slice of Input.
-func (bc *Blockchain) references(ins []transaction.Input) ([]transaction.InOut, error) {
-	references := make([]transaction.InOut, 0, len(ins))
-
-	for _, inputs := range transaction.GroupInputsByPrevHash(ins) {
-		prevHash := inputs[0].PrevHash
-		unspent, err := bc.dao.GetUnspentCoinState(prevHash)
-		if err != nil {
-			return nil, errors.New("bad input reference")
-		}
-		for _, in := range inputs {
-			if int(in.PrevIndex) > len(unspent.States)-1 {
-				return nil, errors.New("bad input reference")
-			}
-			references = append(references, transaction.InOut{In: *in, Out: unspent.States[in.PrevIndex].Output})
-		}
-	}
-	return references, nil
+	return amount * util.Fixed8(value)
 }
 
 // FeePerByte returns transaction network fee per byte.
@@ -1311,14 +1075,14 @@ func (bc *Blockchain) GetMemPool() *mempool.Pool {
 
 // ApplyPolicyToTxSet applies configured policies to given transaction set. It
 // expects slice to be ordered by fee and returns a subslice of it.
-func (bc *Blockchain) ApplyPolicyToTxSet(txes []mempool.TxWithFee) []mempool.TxWithFee {
+func (bc *Blockchain) ApplyPolicyToTxSet(txes []*transaction.Transaction) []*transaction.Transaction {
 	if bc.config.MaxTransactionsPerBlock != 0 && len(txes) > bc.config.MaxTransactionsPerBlock {
 		txes = txes[:bc.config.MaxTransactionsPerBlock]
 	}
 	maxFree := bc.config.MaxFreeTransactionsPerBlock
 	if maxFree != 0 {
 		lowStart := sort.Search(len(txes), func(i int) bool {
-			return bc.IsLowPriority(txes[i].Fee)
+			return bc.IsLowPriority(txes[i].NetworkFee)
 		})
 		if lowStart+maxFree < len(txes) {
 			txes = txes[:lowStart+maxFree]
@@ -1360,28 +1124,11 @@ func (bc *Blockchain) verifyTx(t *transaction.Transaction, block *block.Block) e
 	if netFee < 0 {
 		return errors.Errorf("insufficient funds: net fee is %v, need %v", t.NetworkFee, needNetworkFee)
 	}
-	if transaction.HaveDuplicateInputs(t.Inputs) {
-		return errors.New("invalid transaction's inputs")
-	}
 	if block == nil {
 		if ok := bc.memPool.Verify(t, bc); !ok {
 			return errors.New("invalid transaction due to conflicts with the memory pool")
 		}
 	}
-	if bc.dao.IsDoubleSpend(t) {
-		return errors.New("invalid transaction caused by double spending")
-	}
-	if err := bc.verifyOutputs(t); err != nil {
-		return errors.Wrap(err, "wrong outputs")
-	}
-	refs, err := bc.References(t)
-	if err != nil {
-		return err
-	}
-	results := refsAndOutsToResults(refs, t.Outputs)
-	if err := bc.verifyResults(t, results); err != nil {
-		return err
-	}
 
 	for _, a := range t.Attributes {
 		if a.Usage == transaction.ECDH02 || a.Usage == transaction.ECDH03 {
@@ -1389,96 +1136,9 @@ func (bc *Blockchain) verifyTx(t *transaction.Transaction, block *block.Block) e
 		}
 	}
 
-	switch t.Type {
-	case transaction.ClaimType:
-		claim := t.Data.(*transaction.ClaimTX)
-		if transaction.HaveDuplicateInputs(claim.Claims) {
-			return errors.New("duplicate claims")
-		}
-		if bc.dao.IsDoubleClaim(claim) {
-			return errors.New("double claim")
-		}
-		if err := bc.verifyClaims(t, results); err != nil {
-			return err
-		}
-	case transaction.InvocationType:
-		inv := t.Data.(*transaction.InvocationTX)
-		if inv.Gas.FractionalValue() != 0 {
-			return errors.New("invocation gas can only be integer")
-		}
-	}
-
 	return bc.verifyTxWitnesses(t, block)
 }
 
-func (bc *Blockchain) verifyClaims(tx *transaction.Transaction, results []*transaction.Result) (err error) {
-	t := tx.Data.(*transaction.ClaimTX)
-	var result *transaction.Result
-	for i := range results {
-		if results[i].AssetID == UtilityTokenID() {
-			result = results[i]
-			break
-		}
-	}
-
-	if result == nil || result.Amount.GreaterThan(0) {
-		return errors.New("invalid output in claim tx")
-	}
-
-	bonus, err := bc.calculateBonus(t.Claims)
-	if err == nil && bonus != -result.Amount {
-		return fmt.Errorf("wrong bonus calculated in claim tx: %s != %s",
-			bonus.String(), (-result.Amount).String())
-	}
-
-	return err
-}
-
-func (bc *Blockchain) calculateBonus(claims []transaction.Input) (util.Fixed8, error) {
-	unclaimed := []*spentCoin{}
-	inputs := transaction.GroupInputsByPrevHash(claims)
-
-	for _, group := range inputs {
-		h := group[0].PrevHash
-		unspent, err := bc.dao.GetUnspentCoinState(h)
-		if err != nil {
-			return 0, err
-		}
-
-		for _, c := range group {
-			if len(unspent.States) <= int(c.PrevIndex) {
-				return 0, fmt.Errorf("can't find spent coins for %s (%d)", c.PrevHash.StringLE(), c.PrevIndex)
-			}
-			if unspent.States[c.PrevIndex].State&state.CoinSpent == 0 {
-				return 0, fmt.Errorf("not spent yet: %s/%d", c.PrevHash.StringLE(), c.PrevIndex)
-			}
-			if unspent.States[c.PrevIndex].State&state.CoinClaimed != 0 {
-				return 0, fmt.Errorf("already claimed: %s/%d", c.PrevHash.StringLE(), c.PrevIndex)
-			}
-			unclaimed = append(unclaimed, &spentCoin{
-				Output:      &unspent.States[c.PrevIndex].Output,
-				StartHeight: unspent.Height,
-				EndHeight:   unspent.States[c.PrevIndex].SpendHeight,
-			})
-		}
-	}
-
-	return bc.calculateBonusInternal(unclaimed)
-}
-
-func (bc *Blockchain) calculateBonusInternal(scs []*spentCoin) (util.Fixed8, error) {
-	var claimed util.Fixed8
-	for _, sc := range scs {
-		gen, sys, err := bc.CalculateClaimable(sc.Output.Amount, sc.StartHeight, sc.EndHeight)
-		if err != nil {
-			return 0, err
-		}
-		claimed += gen + sys
-	}
-
-	return claimed, nil
-}
-
 // isTxStillRelevant is a callback for mempool transaction filtering after the
 // new block addition. It returns false for transactions already present in the
 // chain (added by the new block), transactions using some inputs that are
@@ -1492,15 +1152,6 @@ func (bc *Blockchain) isTxStillRelevant(t *transaction.Transaction) bool {
 	if bc.dao.HasTransaction(t.Hash()) {
 		return false
 	}
-	if bc.dao.IsDoubleSpend(t) {
-		return false
-	}
-	if t.Type == transaction.ClaimType {
-		claim := t.Data.(*transaction.ClaimTX)
-		if bc.dao.IsDoubleClaim(claim) {
-			return false
-		}
-	}
 	for i := range t.Scripts {
 		if !vm.IsStandardContract(t.Scripts[i].VerificationScript) {
 			recheckWitness = true
@@ -1536,14 +1187,12 @@ func (bc *Blockchain) PoolTx(t *transaction.Transaction) error {
 		return err
 	}
 	// Policying.
-	if t.Type != transaction.ClaimType {
-		txSize := io.GetVarSize(t)
-		maxFree := bc.config.MaxFreeTransactionSize
-		if maxFree != 0 && txSize > maxFree {
-			if bc.IsLowPriority(t.NetworkFee) ||
-				t.NetworkFee < util.Fixed8FromFloat(bc.config.FeePerExtraByte)*util.Fixed8(txSize-maxFree) {
-				return ErrPolicy
-			}
+	txSize := io.GetVarSize(t)
+	maxFree := bc.config.MaxFreeTransactionSize
+	if maxFree != 0 && txSize > maxFree {
+		if bc.IsLowPriority(t.NetworkFee) ||
+			t.NetworkFee < util.Fixed8FromFloat(bc.config.FeePerExtraByte)*util.Fixed8(txSize-maxFree) {
+			return ErrPolicy
 		}
 	}
 	if err := bc.memPool.Add(t, bc); err != nil {
@@ -1559,125 +1208,6 @@ func (bc *Blockchain) PoolTx(t *transaction.Transaction) error {
 	return nil
 }
 
-func (bc *Blockchain) verifyOutputs(t *transaction.Transaction) error {
-	for assetID, outputs := range t.GroupOutputByAssetID() {
-		assetState := bc.GetAssetState(assetID)
-		if assetState == nil {
-			return fmt.Errorf("no asset state for %s", assetID.StringLE())
-		}
-
-		if assetState.Expiration < bc.blockHeight+1 && assetState.AssetType != transaction.GoverningToken && assetState.AssetType != transaction.UtilityToken {
-			return fmt.Errorf("asset %s expired", assetID.StringLE())
-		}
-
-		for _, out := range outputs {
-			if int64(out.Amount)%int64(math.Pow10(8-int(assetState.Precision))) != 0 {
-				return fmt.Errorf("output is not compliant with %s asset precision", assetID.StringLE())
-			}
-		}
-	}
-
-	return nil
-}
-
-func (bc *Blockchain) verifyResults(t *transaction.Transaction, results []*transaction.Result) error {
-	var resultsDestroy []*transaction.Result
-	var resultsIssue []*transaction.Result
-	for _, re := range results {
-		if re.Amount.GreaterThan(util.Fixed8(0)) {
-			resultsDestroy = append(resultsDestroy, re)
-		}
-
-		if re.Amount.LessThan(util.Fixed8(0)) {
-			resultsIssue = append(resultsIssue, re)
-		}
-	}
-	if len(resultsDestroy) > 1 {
-		return errors.New("tx has more than 1 destroy output")
-	}
-	if len(resultsDestroy) == 1 && resultsDestroy[0].AssetID != UtilityTokenID() {
-		return errors.New("tx destroys non-utility token")
-	}
-	sysfee := t.SystemFee
-	if sysfee.GreaterThan(util.Fixed8(0)) {
-		if len(resultsDestroy) == 0 {
-			return fmt.Errorf("system requires to pay %s fee, but tx pays nothing", sysfee.String())
-		}
-		if resultsDestroy[0].Amount.LessThan(sysfee) {
-			return fmt.Errorf("system requires to pay %s fee, but tx pays %s only", sysfee.String(), resultsDestroy[0].Amount.String())
-		}
-	}
-
-	switch t.Type {
-	case transaction.ClaimType:
-		for _, r := range resultsIssue {
-			if r.AssetID != UtilityTokenID() {
-				return errors.New("miner or claim tx issues non-utility tokens")
-			}
-		}
-		break
-	case transaction.IssueType:
-		for _, r := range resultsIssue {
-			if r.AssetID == UtilityTokenID() {
-				return errors.New("issue tx issues utility tokens")
-			}
-			asset, err := bc.dao.GetAssetState(r.AssetID)
-			if asset == nil || err != nil {
-				return errors.New("invalid asset in issue tx")
-			}
-			if asset.Available < r.Amount {
-				return errors.New("trying to issue more than available")
-			}
-		}
-		break
-	default:
-		if len(resultsIssue) > 0 {
-			return errors.New("non issue/miner/claim tx issues tokens")
-		}
-		break
-	}
-
-	return nil
-}
-
-// GetTransactionResults returns the transaction results aggregate by assetID.
-// Golang of GetTransationResults method in C# (https://github.com/neo-project/neo/blob/master/neo/Network/P2P/Payloads/Transaction.cs#L207)
-func (bc *Blockchain) GetTransactionResults(t *transaction.Transaction) []*transaction.Result {
-	references, err := bc.References(t)
-	if err != nil {
-		return nil
-	}
-	return refsAndOutsToResults(references, t.Outputs)
-}
-
-// mapReferencesToResults returns cumulative results of transaction based in its
-// references and outputs.
-func refsAndOutsToResults(references []transaction.InOut, outputs []transaction.Output) []*transaction.Result {
-	var results []*transaction.Result
-	tempResult := make(map[util.Uint256]util.Fixed8)
-
-	for _, inout := range references {
-		c := tempResult[inout.Out.AssetID]
-		tempResult[inout.Out.AssetID] = c.Add(inout.Out.Amount)
-	}
-	for _, output := range outputs {
-		c := tempResult[output.AssetID]
-		tempResult[output.AssetID] = c.Sub(output.Amount)
-	}
-
-	results = []*transaction.Result{} // this assignment is necessary. (Most of the time amount == 0 and results is the empty slice.)
-	for assetID, amount := range tempResult {
-		if amount != util.Fixed8(0) {
-			results = append(results, &transaction.Result{
-				AssetID: assetID,
-				Amount:  amount,
-			})
-		}
-	}
-
-	return results
-}
-
 //GetStandByValidators returns validators from the configuration.
 func (bc *Blockchain) GetStandByValidators() (keys.PublicKeys, error) {
 	return getValidators(bc.config)
@@ -1697,57 +1227,11 @@ func (bc *Blockchain) GetEnrollments() ([]state.Validator, error) {
 // to verify whether the transaction is bonafide or not.
 // Golang implementation of GetScriptHashesForVerifying method in C# (https://github.com/neo-project/neo/blob/master/neo/Network/P2P/Payloads/Transaction.cs#L190)
 func (bc *Blockchain) GetScriptHashesForVerifying(t *transaction.Transaction) ([]util.Uint160, error) {
-	references, err := bc.References(t)
-	if err != nil {
-		return nil, err
-	}
 	hashes := make(map[util.Uint160]bool)
-	for i := range references {
-		hashes[references[i].Out.ScriptHash] = true
-	}
-
-	for a, outputs := range t.GroupOutputByAssetID() {
-		as := bc.GetAssetState(a)
-		if as == nil {
-			return nil, errors.New("Invalid operation")
-		}
-		if as.AssetType&transaction.DutyFlag != 0 {
-			for _, o := range outputs {
-				h := o.ScriptHash
-				if _, ok := hashes[h]; !ok {
-					hashes[h] = true
-				}
-			}
-		}
-	}
 	hashes[t.Sender] = true
 	for _, c := range t.Cosigners {
 		hashes[c.Account] = true
 	}
-	switch t.Type {
-	case transaction.ClaimType:
-		claim := t.Data.(*transaction.ClaimTX)
-		refs, err := bc.references(claim.Claims)
-		if err != nil {
-			return nil, err
-		}
-		for i := range refs {
-			hashes[refs[i].Out.ScriptHash] = true
-		}
-	case transaction.IssueType:
-		for _, res := range refsAndOutsToResults(references, t.Outputs) {
-			if res.Amount < 0 {
-				asset, err := bc.dao.GetAssetState(res.AssetID)
-				if asset == nil || err != nil {
-					return nil, errors.New("invalid asset in issue tx")
-				}
-				hashes[asset.Issuer] = true
-			}
-		}
-	case transaction.RegisterType:
-		reg := t.Data.(*transaction.RegisterTX)
-		hashes[reg.Owner.GetScriptHash()] = true
-	}
 	// convert hashes to []util.Uint160
 	hashesResult := make([]util.Uint160, 0, len(hashes))
 	for h := range hashes {
@@ -1830,7 +1314,6 @@ func (bc *Blockchain) verifyHashAgainstScript(hash util.Uint160, witness *transa
 // is used for easy interop access and can be omitted for transactions that are
 // not yet added into any block.
 // Golang implementation of VerifyWitnesses method in C# (https://github.com/neo-project/neo/blob/master/neo/SmartContract/Helper.cs#L87).
-// Unfortunately the IVerifiable interface could not be implemented because we can't move the References method in blockchain.go to the transaction.go file.
 func (bc *Blockchain) verifyTxWitnesses(t *transaction.Transaction, block *block.Block) error {
 	hashes, err := bc.GetScriptHashesForVerifying(t)
 	if err != nil {
diff --git a/pkg/core/blockchain_test.go b/pkg/core/blockchain_test.go
index 77a5d697e..1b50e88d9 100644
--- a/pkg/core/blockchain_test.go
+++ b/pkg/core/blockchain_test.go
@@ -102,7 +102,7 @@ func TestScriptFromWitness(t *testing.T) {
 
 func TestGetHeader(t *testing.T) {
 	bc := newTestChain(t)
-	tx := transaction.NewContractTX()
+	tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 	tx.ValidUntilBlock = bc.BlockHeight() + 1
 	assert.Nil(t, addSender(tx))
 	assert.Nil(t, signTx(bc, tx))
@@ -194,31 +194,23 @@ func TestGetClaimable(t *testing.T) {
 	require.NoError(t, err)
 
 	t.Run("first generation period", func(t *testing.T) {
-		amount, sysfee, err := bc.CalculateClaimable(util.Fixed8FromInt64(1), 0, 2)
-		require.NoError(t, err)
+		amount := bc.CalculateClaimable(1, 0, 2)
 		require.EqualValues(t, 8, amount)
-		require.EqualValues(t, 0, sysfee)
 	})
 
 	t.Run("a number of full periods", func(t *testing.T) {
-		amount, sysfee, err := bc.CalculateClaimable(util.Fixed8FromInt64(1), 0, 6)
-		require.NoError(t, err)
+		amount := bc.CalculateClaimable(1, 0, 6)
 		require.EqualValues(t, 4+4+3+3+2+2, amount)
-		require.EqualValues(t, 0, sysfee)
 	})
 
 	t.Run("start from the 2-nd block", func(t *testing.T) {
-		amount, sysfee, err := bc.CalculateClaimable(util.Fixed8FromInt64(1), 1, 7)
-		require.NoError(t, err)
+		amount := bc.CalculateClaimable(1, 1, 7)
 		require.EqualValues(t, 4+3+3+2+2+1, amount)
-		require.EqualValues(t, 0, sysfee)
 	})
 
 	t.Run("end height after generation has ended", func(t *testing.T) {
-		amount, sysfee, err := bc.CalculateClaimable(util.Fixed8FromInt64(1), 1, 10)
-		require.NoError(t, err)
+		amount := bc.CalculateClaimable(1, 1, 10)
 		require.EqualValues(t, 4+3+3+2+2+1+1, amount)
-		require.EqualValues(t, 0, sysfee)
 	})
 }
 
@@ -275,7 +267,7 @@ func TestSubscriptions(t *testing.T) {
 	emit.Bytes(script.BinWriter, []byte("yay!"))
 	emit.Syscall(script.BinWriter, "Neo.Runtime.Notify")
 	require.NoError(t, script.Err)
-	txGood1 := transaction.NewInvocationTX(script.Bytes(), 0)
+	txGood1 := transaction.New(script.Bytes(), 0)
 	txGood1.Sender = neoOwner
 	txGood1.Nonce = 1
 	txGood1.ValidUntilBlock = 100500
@@ -287,7 +279,7 @@ func TestSubscriptions(t *testing.T) {
 	emit.Syscall(script.BinWriter, "Neo.Runtime.Notify")
 	emit.Opcode(script.BinWriter, opcode.THROW)
 	require.NoError(t, script.Err)
-	txBad := transaction.NewInvocationTX(script.Bytes(), 0)
+	txBad := transaction.New(script.Bytes(), 0)
 	txBad.Sender = neoOwner
 	txBad.Nonce = 2
 	txBad.ValidUntilBlock = 100500
@@ -297,7 +289,7 @@ func TestSubscriptions(t *testing.T) {
 	emit.Bytes(script.BinWriter, []byte("yay! yay! yay!"))
 	emit.Syscall(script.BinWriter, "Neo.Runtime.Notify")
 	require.NoError(t, script.Err)
-	txGood2 := transaction.NewInvocationTX(script.Bytes(), 0)
+	txGood2 := transaction.New(script.Bytes(), 0)
 	txGood2.Sender = neoOwner
 	txGood2.Nonce = 3
 	txGood2.ValidUntilBlock = 100500
@@ -319,14 +311,11 @@ func TestSubscriptions(t *testing.T) {
 	for _, txExpected := range invBlock.Transactions {
 		tx := <-txCh
 		require.Equal(t, txExpected, tx)
-		if txExpected.Type == transaction.InvocationType {
-			exec := <-executionCh
-			require.Equal(t, tx.Hash(), exec.TxHash)
-			if exec.VMState == "HALT" {
-				notif := <-notificationCh
-				inv := tx.Data.(*transaction.InvocationTX)
-				require.Equal(t, hash.Hash160(inv.Script), notif.ScriptHash)
-			}
+		exec := <-executionCh
+		require.Equal(t, tx.Hash(), exec.TxHash)
+		if exec.VMState == "HALT" {
+			notif := <-notificationCh
+			require.Equal(t, hash.Hash160(tx.Script), notif.ScriptHash)
 		}
 	}
 	assert.Empty(t, txCh)
diff --git a/pkg/core/blockchainer/blockchainer.go b/pkg/core/blockchainer/blockchainer.go
index dacb0f2fd..5b84826b4 100644
--- a/pkg/core/blockchainer/blockchainer.go
+++ b/pkg/core/blockchainer/blockchainer.go
@@ -14,24 +14,24 @@ import (
 // Blockchainer is an interface that abstract the implementation
 // of the blockchain.
 type Blockchainer interface {
-	ApplyPolicyToTxSet([]mempool.TxWithFee) []mempool.TxWithFee
+	ApplyPolicyToTxSet([]*transaction.Transaction) []*transaction.Transaction
 	GetConfig() config.ProtocolConfiguration
 	AddHeaders(...*block.Header) error
 	AddBlock(*block.Block) error
 	BlockHeight() uint32
-	CalculateClaimable(value util.Fixed8, startHeight, endHeight uint32) (util.Fixed8, util.Fixed8, error)
+	CalculateClaimable(value int64, startHeight, endHeight uint32) util.Fixed8
 	Close()
 	HeaderHeight() uint32
 	GetBlock(hash util.Uint256) (*block.Block, error)
 	GetContractState(hash util.Uint160) *state.Contract
 	GetEnrollments() ([]state.Validator, error)
+	GetGoverningTokenBalance(acc util.Uint160) (util.Fixed8, uint32)
 	GetHeaderHash(int) util.Uint256
 	GetHeader(hash util.Uint256) (*block.Header, error)
 	CurrentHeaderHash() util.Uint256
 	CurrentBlockHash() util.Uint256
 	HasBlock(util.Uint256) bool
 	HasTransaction(util.Uint256) bool
-	GetAssetState(util.Uint256) *state.Asset
 	GetAccountState(util.Uint160) *state.Account
 	GetAppExecResult(util.Uint256) (*state.AppExecResult, error)
 	GetNEP5TransferLog(util.Uint160) *state.NEP5TransferLog
@@ -43,8 +43,6 @@ type Blockchainer interface {
 	GetStorageItems(hash util.Uint160) (map[string]*state.StorageItem, error)
 	GetTestVM() *vm.VM
 	GetTransaction(util.Uint256) (*transaction.Transaction, uint32, error)
-	GetUnspentCoinState(util.Uint256) *state.UnspentCoin
-	References(t *transaction.Transaction) ([]transaction.InOut, error)
 	mempool.Feer // fee interface
 	PoolTx(*transaction.Transaction) error
 	SubscribeForBlocks(ch chan<- *block.Block)
diff --git a/pkg/core/dao/cacheddao.go b/pkg/core/dao/cacheddao.go
index 50d3b9514..9fc792308 100644
--- a/pkg/core/dao/cacheddao.go
+++ b/pkg/core/dao/cacheddao.go
@@ -15,7 +15,6 @@ type Cached struct {
 	DAO
 	accounts  map[util.Uint160]*state.Account
 	contracts map[util.Uint160]*state.Contract
-	unspents  map[util.Uint256]*state.UnspentCoin
 	balances  map[util.Uint160]*state.NEP5Balances
 	transfers map[util.Uint160]map[uint32]*state.NEP5TransferLog
 }
@@ -24,10 +23,9 @@ type Cached struct {
 func NewCached(d DAO) *Cached {
 	accs := make(map[util.Uint160]*state.Account)
 	ctrs := make(map[util.Uint160]*state.Contract)
-	unspents := make(map[util.Uint256]*state.UnspentCoin)
 	balances := make(map[util.Uint160]*state.NEP5Balances)
 	transfers := make(map[util.Uint160]map[uint32]*state.NEP5TransferLog)
-	return &Cached{d.GetWrapped(), accs, ctrs, unspents, balances, transfers}
+	return &Cached{d.GetWrapped(), accs, ctrs, balances, transfers}
 }
 
 // GetAccountStateOrNew retrieves Account from cache or underlying store
@@ -77,20 +75,6 @@ func (cd *Cached) DeleteContractState(hash util.Uint160) error {
 	return cd.DAO.DeleteContractState(hash)
 }
 
-// GetUnspentCoinState retrieves UnspentCoin from cache or underlying store.
-func (cd *Cached) GetUnspentCoinState(hash util.Uint256) (*state.UnspentCoin, error) {
-	if cd.unspents[hash] != nil {
-		return cd.unspents[hash], nil
-	}
-	return cd.DAO.GetUnspentCoinState(hash)
-}
-
-// PutUnspentCoinState saves given UnspentCoin in the cache.
-func (cd *Cached) PutUnspentCoinState(hash util.Uint256, ucs *state.UnspentCoin) error {
-	cd.unspents[hash] = ucs
-	return nil
-}
-
 // GetNEP5Balances retrieves NEP5Balances for the acc.
 func (cd *Cached) GetNEP5Balances(acc util.Uint160) (*state.NEP5Balances, error) {
 	if bs := cd.balances[acc]; bs != nil {
@@ -167,13 +151,6 @@ func (cd *Cached) Persist() (int, error) {
 		}
 		buf.Reset()
 	}
-	for hash := range cd.unspents {
-		err := cd.DAO.putUnspentCoinState(hash, cd.unspents[hash], buf)
-		if err != nil {
-			return 0, err
-		}
-		buf.Reset()
-	}
 	for acc, bs := range cd.balances {
 		err := cd.DAO.putNEP5Balances(acc, bs, buf)
 		if err != nil {
@@ -197,7 +174,6 @@ func (cd *Cached) GetWrapped() DAO {
 	return &Cached{cd.DAO.GetWrapped(),
 		cd.accounts,
 		cd.contracts,
-		cd.unspents,
 		cd.balances,
 		cd.transfers,
 	}
diff --git a/pkg/core/dao/dao.go b/pkg/core/dao/dao.go
index f803078a4..59e6261f8 100644
--- a/pkg/core/dao/dao.go
+++ b/pkg/core/dao/dao.go
@@ -23,9 +23,8 @@ type DAO interface {
 	GetAccountStateOrNew(hash util.Uint160) (*state.Account, error)
 	GetAndDecode(entity io.Serializable, key []byte) error
 	GetAppExecResult(hash util.Uint256) (*state.AppExecResult, error)
-	GetAssetState(assetID util.Uint256) (*state.Asset, error)
 	GetBatch() *storage.MemBatch
-	GetBlock(hash util.Uint256) (*block.Block, uint32, error)
+	GetBlock(hash util.Uint256) (*block.Block, error)
 	GetContractState(hash util.Uint160) (*state.Contract, error)
 	GetCurrentBlockHeight() (uint32, error)
 	GetCurrentHeaderHeight() (i uint32, h util.Uint256, err error)
@@ -36,29 +35,23 @@ type DAO interface {
 	GetStorageItems(hash util.Uint160) (map[string]*state.StorageItem, error)
 	GetStorageItemsWithPrefix(hash util.Uint160, prefix []byte) (map[string]*state.StorageItem, error)
 	GetTransaction(hash util.Uint256) (*transaction.Transaction, uint32, error)
-	GetUnspentCoinState(hash util.Uint256) (*state.UnspentCoin, error)
 	GetVersion() (string, error)
 	GetWrapped() DAO
 	HasTransaction(hash util.Uint256) bool
-	IsDoubleClaim(claim *transaction.ClaimTX) bool
-	IsDoubleSpend(tx *transaction.Transaction) bool
 	Persist() (int, error)
 	PutAccountState(as *state.Account) error
 	PutAppExecResult(aer *state.AppExecResult) error
-	PutAssetState(as *state.Asset) error
 	PutContractState(cs *state.Contract) error
 	PutCurrentHeader(hashAndIndex []byte) error
 	PutNEP5Balances(acc util.Uint160, bs *state.NEP5Balances) error
 	PutNEP5TransferLog(acc util.Uint160, index uint32, lg *state.NEP5TransferLog) error
 	PutStorageItem(scripthash util.Uint160, key []byte, si *state.StorageItem) error
-	PutUnspentCoinState(hash util.Uint256, ucs *state.UnspentCoin) error
 	PutVersion(v string) error
-	StoreAsBlock(block *block.Block, sysFee uint32) error
+	StoreAsBlock(block *block.Block) error
 	StoreAsCurrentBlock(block *block.Block) error
 	StoreAsTransaction(tx *transaction.Transaction, index uint32) error
 	putAccountState(as *state.Account, buf *io.BufBinWriter) error
 	putNEP5Balances(acc util.Uint160, bs *state.NEP5Balances, buf *io.BufBinWriter) error
-	putUnspentCoinState(hash util.Uint256, ucs *state.UnspentCoin, buf *io.BufBinWriter) error
 }
 
 // Simple is memCached wrapper around DB, simple DAO implementation.
@@ -146,30 +139,6 @@ func (dao *Simple) putAccountState(as *state.Account, buf *io.BufBinWriter) erro
 
 // -- end accounts.
 
-// -- start assets.
-
-// GetAssetState returns given asset state as recorded in the given store.
-func (dao *Simple) GetAssetState(assetID util.Uint256) (*state.Asset, error) {
-	asset := &state.Asset{}
-	key := storage.AppendPrefix(storage.STAsset, assetID.BytesBE())
-	err := dao.GetAndDecode(asset, key)
-	if err != nil {
-		return nil, err
-	}
-	if asset.ID != assetID {
-		return nil, fmt.Errorf("found asset id is not equal to expected")
-	}
-	return asset, nil
-}
-
-// PutAssetState puts given asset state into the given store.
-func (dao *Simple) PutAssetState(as *state.Asset) error {
-	key := storage.AppendPrefix(storage.STAsset, as.ID.BytesBE())
-	return dao.Put(as, key)
-}
-
-// -- end assets.
-
 // -- start contracts.
 
 // GetContractState returns contract state as recorded in the given
@@ -276,31 +245,6 @@ func (dao *Simple) AppendNEP5Transfer(acc util.Uint160, index uint32, tr *state.
 
 // -- end transfer log.
 
-// -- start unspent coins.
-
-// GetUnspentCoinState retrieves UnspentCoinState from the given store.
-func (dao *Simple) GetUnspentCoinState(hash util.Uint256) (*state.UnspentCoin, error) {
-	unspent := &state.UnspentCoin{}
-	key := storage.AppendPrefix(storage.STCoin, hash.BytesLE())
-	err := dao.GetAndDecode(unspent, key)
-	if err != nil {
-		return nil, err
-	}
-	return unspent, nil
-}
-
-// PutUnspentCoinState puts given UnspentCoinState into the given store.
-func (dao *Simple) PutUnspentCoinState(hash util.Uint256, ucs *state.UnspentCoin) error {
-	return dao.putUnspentCoinState(hash, ucs, io.NewBufBinWriter())
-}
-
-func (dao *Simple) putUnspentCoinState(hash util.Uint256, ucs *state.UnspentCoin, buf *io.BufBinWriter) error {
-	key := storage.AppendPrefix(storage.STCoin, hash.BytesLE())
-	return dao.putWithBuffer(ucs, key, buf)
-}
-
-// -- end unspent coins.
-
 // -- start notification event.
 
 // GetAppExecResult gets application execution result from the
@@ -402,18 +346,18 @@ func makeStorageItemKey(scripthash util.Uint160, key []byte) []byte {
 // -- other.
 
 // GetBlock returns Block by the given hash if it exists in the store.
-func (dao *Simple) GetBlock(hash util.Uint256) (*block.Block, uint32, error) {
+func (dao *Simple) GetBlock(hash util.Uint256) (*block.Block, error) {
 	key := storage.AppendPrefix(storage.DataBlock, hash.BytesLE())
 	b, err := dao.Store.Get(key)
 	if err != nil {
-		return nil, 0, err
+		return nil, err
 	}
 
-	block, err := block.NewBlockFromTrimmedBytes(b[4:])
+	block, err := block.NewBlockFromTrimmedBytes(b)
 	if err != nil {
-		return nil, 0, err
+		return nil, err
 	}
-	return block, binary.LittleEndian.Uint32(b[:4]), nil
+	return block, nil
 }
 
 // GetVersion attempts to get the current version stored in the
@@ -531,12 +475,11 @@ func (dao *Simple) HasTransaction(hash util.Uint256) bool {
 }
 
 // StoreAsBlock stores the given block as DataBlock.
-func (dao *Simple) StoreAsBlock(block *block.Block, sysFee uint32) error {
+func (dao *Simple) StoreAsBlock(block *block.Block) error {
 	var (
 		key = storage.AppendPrefix(storage.DataBlock, block.Hash().BytesLE())
 		buf = io.NewBufBinWriter()
 	)
-	buf.WriteU32LE(sysFee)
 	b, err := block.Trim()
 	if err != nil {
 		return err
@@ -569,35 +512,6 @@ func (dao *Simple) StoreAsTransaction(tx *transaction.Transaction, index uint32)
 	return dao.Store.Put(key, buf.Bytes())
 }
 
-// IsDoubleSpend verifies that the input transactions are not double spent.
-func (dao *Simple) IsDoubleSpend(tx *transaction.Transaction) bool {
-	return dao.checkUsedInputs(tx.Inputs, state.CoinSpent)
-}
-
-// IsDoubleClaim verifies that given claim inputs are not already claimed by another tx.
-func (dao *Simple) IsDoubleClaim(claim *transaction.ClaimTX) bool {
-	return dao.checkUsedInputs(claim.Claims, state.CoinClaimed)
-}
-
-func (dao *Simple) checkUsedInputs(inputs []transaction.Input, coin state.Coin) bool {
-	if len(inputs) == 0 {
-		return false
-	}
-	for _, inputs := range transaction.GroupInputsByPrevHash(inputs) {
-		prevHash := inputs[0].PrevHash
-		unspent, err := dao.GetUnspentCoinState(prevHash)
-		if err != nil {
-			return true
-		}
-		for _, input := range inputs {
-			if int(input.PrevIndex) >= len(unspent.States) || (unspent.States[input.PrevIndex].State&coin) != 0 {
-				return true
-			}
-		}
-	}
-	return false
-}
-
 // Persist flushes all the changes made into the (supposedly) persistent
 // underlying store.
 func (dao *Simple) Persist() (int, error) {
diff --git a/pkg/core/dao/dao_test.go b/pkg/core/dao/dao_test.go
index 65e74b50e..640620a11 100644
--- a/pkg/core/dao/dao_test.go
+++ b/pkg/core/dao/dao_test.go
@@ -7,7 +7,6 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/core/state"
 	"github.com/nspcc-dev/neo-go/pkg/core/storage"
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
-	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/nspcc-dev/neo-go/pkg/internal/random"
 	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
@@ -59,17 +58,6 @@ func TestPutAndGetAccountStateOrNew(t *testing.T) {
 	require.Equal(t, accountState.ScriptHash, gotAccount.ScriptHash)
 }
 
-func TestPutAndGetAssetState(t *testing.T) {
-	dao := NewSimple(storage.NewMemoryStore())
-	id := random.Uint256()
-	assetState := &state.Asset{ID: id, Owner: keys.PublicKey{}}
-	err := dao.PutAssetState(assetState)
-	require.NoError(t, err)
-	gotAssetState, err := dao.GetAssetState(id)
-	require.NoError(t, err)
-	require.Equal(t, assetState, gotAssetState)
-}
-
 func TestPutAndGetContractState(t *testing.T) {
 	dao := NewSimple(storage.NewMemoryStore())
 	contractState := &state.Contract{Script: []byte{}, ParamList: []smartcontract.ParamType{}}
@@ -94,25 +82,6 @@ func TestDeleteContractState(t *testing.T) {
 	require.Nil(t, gotContractState)
 }
 
-func TestGetUnspentCoinState_Err(t *testing.T) {
-	dao := NewSimple(storage.NewMemoryStore())
-	hash := random.Uint256()
-	gotUnspentCoinState, err := dao.GetUnspentCoinState(hash)
-	require.Error(t, err)
-	require.Nil(t, gotUnspentCoinState)
-}
-
-func TestPutGetUnspentCoinState(t *testing.T) {
-	dao := NewSimple(storage.NewMemoryStore())
-	hash := random.Uint256()
-	unspentCoinState := &state.UnspentCoin{Height: 42, States: []state.OutputState{}}
-	err := dao.PutUnspentCoinState(hash, unspentCoinState)
-	require.NoError(t, err)
-	gotUnspentCoinState, err := dao.GetUnspentCoinState(hash)
-	require.NoError(t, err)
-	require.Equal(t, unspentCoinState, gotUnspentCoinState)
-}
-
 func TestPutGetAppExecResult(t *testing.T) {
 	dao := NewSimple(storage.NewMemoryStore())
 	hash := random.Uint256()
@@ -155,7 +124,7 @@ func TestDeleteStorageItem(t *testing.T) {
 func TestGetBlock_NotExists(t *testing.T) {
 	dao := NewSimple(storage.NewMemoryStore())
 	hash := random.Uint256()
-	block, _, err := dao.GetBlock(hash)
+	block, err := dao.GetBlock(hash)
 	require.Error(t, err)
 	require.Nil(t, block)
 }
@@ -171,12 +140,11 @@ func TestPutGetBlock(t *testing.T) {
 		},
 	}
 	hash := b.Hash()
-	err := dao.StoreAsBlock(b, 42)
+	err := dao.StoreAsBlock(b)
 	require.NoError(t, err)
-	gotBlock, sysfee, err := dao.GetBlock(hash)
+	gotBlock, err := dao.GetBlock(hash)
 	require.NoError(t, err)
 	require.NotNil(t, gotBlock)
-	require.EqualValues(t, 42, sysfee)
 }
 
 func TestGetVersion_NoVersion(t *testing.T) {
@@ -221,7 +189,7 @@ func TestGetCurrentHeaderHeight_Store(t *testing.T) {
 
 func TestStoreAsTransaction(t *testing.T) {
 	dao := NewSimple(storage.NewMemoryStore())
-	tx := transaction.NewIssueTX()
+	tx := transaction.New([]byte{byte(opcode.PUSH1)}, 1)
 	hash := tx.Hash()
 	err := dao.StoreAsTransaction(tx, 0)
 	require.NoError(t, err)
diff --git a/pkg/core/gas_price.go b/pkg/core/gas_price.go
index 7d248d5ec..56094bc0b 100644
--- a/pkg/core/gas_price.go
+++ b/pkg/core/gas_price.go
@@ -41,10 +41,6 @@ func getSyscallPrice(v *vm.VM, id uint32) util.Fixed8 {
 	}
 
 	const (
-		neoAssetCreate           = 0x1fc6c583 // Neo.Asset.Create
-		antSharesAssetCreate     = 0x99025068 // AntShares.Asset.Create
-		neoAssetRenew            = 0x71908478 // Neo.Asset.Renew
-		antSharesAssetRenew      = 0xaf22447b // AntShares.Asset.Renew
 		neoContractCreate        = 0x6ea56cf6 // Neo.Contract.Create
 		neoContractMigrate       = 0x90621b47 // Neo.Contract.Migrate
 		antSharesContractCreate  = 0x2a28d29b // AntShares.Contract.Create
@@ -58,11 +54,6 @@ func getSyscallPrice(v *vm.VM, id uint32) util.Fixed8 {
 	estack := v.Estack()
 
 	switch id {
-	case neoAssetCreate, antSharesAssetCreate:
-		return util.Fixed8FromInt64(5000)
-	case neoAssetRenew, antSharesAssetRenew:
-		arg := estack.Peek(1).BigInt().Int64()
-		return util.Fixed8FromInt64(arg * 5000)
 	case neoContractCreate, neoContractMigrate, antSharesContractCreate, antSharesContractMigrate:
 		return smartcontract.GetDeploymentPrice(smartcontract.PropertyState(estack.Peek(3).BigInt().Int64()))
 	case systemStoragePut, systemStoragePutEx, neoStoragePut, antSharesStoragePut:
diff --git a/pkg/core/gas_price_test.go b/pkg/core/gas_price_test.go
index 661120696..87faae008 100644
--- a/pkg/core/gas_price_test.go
+++ b/pkg/core/gas_price_test.go
@@ -23,21 +23,6 @@ func TestGetPrice(t *testing.T) {
 	v := SpawnVM(systemInterop)
 	v.SetPriceGetter(getPrice)
 
-	t.Run("Neo.Asset.Create", func(t *testing.T) {
-		// Neo.Asset.Create: 83c5c61f
-		v.Load([]byte{byte(opcode.SYSCALL), 0x83, 0xc5, 0xc6, 0x1f})
-		checkGas(t, util.Fixed8FromInt64(5000), v)
-	})
-
-	t.Run("Neo.Asset.Renew", func(t *testing.T) {
-		// Neo.Asset.Renew: 78849071 (requires push 09 push 09 before)
-		v.Load([]byte{byte(opcode.PUSH9), byte(opcode.PUSH9), byte(opcode.SYSCALL), 0x78, 0x84, 0x90, 0x71})
-		require.NoError(t, v.StepInto()) // push 9
-		require.NoError(t, v.StepInto()) // push 9
-
-		checkGas(t, util.Fixed8FromInt64(9*5000), v)
-	})
-
 	t.Run("Neo.Contract.Create (no props)", func(t *testing.T) {
 		// Neo.Contract.Create: f66ca56e (requires push properties on fourth position)
 		v.Load([]byte{byte(opcode.PUSH0), byte(opcode.PUSH0), byte(opcode.PUSH0), byte(opcode.PUSH0),
diff --git a/pkg/core/helper_test.go b/pkg/core/helper_test.go
index 9ff510f05..06e394ca0 100644
--- a/pkg/core/helper_test.go
+++ b/pkg/core/helper_test.go
@@ -60,7 +60,7 @@ func newBlock(cfg config.ProtocolConfiguration, index uint32, prev util.Uint256,
 		Base: block.Base{
 			Version:       0,
 			PrevHash:      prev,
-			Timestamp:     uint64(time.Now().UTC().Unix()) + uint64(index),
+			Timestamp:     uint64(time.Now().UTC().Unix())*1000 + uint64(index),
 			Index:         index,
 			NextConsensus: witness.ScriptHash(),
 			Script:        witness,
@@ -138,7 +138,7 @@ func newDumbBlock() *block.Block {
 			Nonce:        1111,
 		},
 		Transactions: []*transaction.Transaction{
-			{Type: transaction.IssueType},
+			transaction.New([]byte{byte(opcode.PUSH1)}, 0),
 		},
 	}
 }
@@ -165,19 +165,21 @@ func TestCreateBasicChain(t *testing.T) {
 		return testNonce
 	}
 
-	var neoAmount = util.Fixed8FromInt64(99999000)
-	var neoRemainder = util.Fixed8FromInt64(100000000) - neoAmount
+	const neoAmount = 99999000
 	bc := newTestChain(t)
 	defer bc.Close()
 
 	gasHash := bc.contracts.GAS.Hash
+	neoHash := bc.contracts.NEO.Hash
 	t.Logf("native GAS hash: %v", gasHash)
+	t.Logf("native NEO hash: %v", neoHash)
 
 	priv0 := testchain.PrivateKeyByID(0)
 	priv0ScriptHash := priv0.GetScriptHash()
 
-	// Move almost all NEO and some nep5 GAS to one simple account.
-	txMoveNeo := newNEP5Transfer(gasHash, neoOwner, priv0ScriptHash, 1000000000)
+	require.Equal(t, util.Fixed8FromInt64(0), bc.GetUtilityTokenBalance(priv0ScriptHash))
+	// Move some NEO to one simple account.
+	txMoveNeo := newNEP5Transfer(neoHash, neoOwner, priv0ScriptHash, neoAmount)
 	txMoveNeo.ValidUntilBlock = validUntilBlock
 	txMoveNeo.Nonce = getNextNonce()
 	txMoveNeo.Sender = neoOwner
@@ -187,93 +189,34 @@ func TestCreateBasicChain(t *testing.T) {
 		AllowedContracts: nil,
 		AllowedGroups:    nil,
 	}}
-
-	// use output of issue tx from genesis block as an input
-	genesisBlock, err := bc.GetBlock(bc.GetHeaderHash(0))
-	require.NoError(t, err)
-	require.Equal(t, 4, len(genesisBlock.Transactions))
-	h := genesisBlock.Transactions[2].Hash()
-	txMoveNeo.AddInput(&transaction.Input{
-		PrevHash:  h,
-		PrevIndex: 0,
-	})
-	txMoveNeo.AddOutput(&transaction.Output{
-		AssetID:    GoverningTokenID(),
-		Amount:     neoAmount,
-		ScriptHash: priv0ScriptHash,
-		Position:   0,
-	})
-	txMoveNeo.AddOutput(&transaction.Output{
-		AssetID:    GoverningTokenID(),
-		Amount:     neoRemainder,
-		ScriptHash: neoOwner,
-		Position:   1,
-	})
 	require.NoError(t, signTx(bc, txMoveNeo))
-	b := bc.newBlock(txMoveNeo)
+	// Move some GAS to one simple account.
+	txMoveGas := newNEP5Transfer(gasHash, neoOwner, priv0ScriptHash, int64(util.Fixed8FromInt64(1000)))
+	txMoveGas.ValidUntilBlock = validUntilBlock
+	txMoveGas.Nonce = getNextNonce()
+	txMoveGas.Sender = neoOwner
+	txMoveGas.Cosigners = []transaction.Cosigner{{
+		Account:          neoOwner,
+		Scopes:           transaction.CalledByEntry,
+		AllowedContracts: nil,
+		AllowedGroups:    nil,
+	}}
+	require.NoError(t, signTx(bc, txMoveGas))
+	b := bc.newBlock(txMoveNeo, txMoveGas)
 	require.NoError(t, bc.AddBlock(b))
 	t.Logf("txMoveNeo: %s", txMoveNeo.Hash().StringLE())
+	t.Logf("txMoveGas: %s", txMoveGas.Hash().StringLE())
 
+	require.Equal(t, util.Fixed8FromInt64(1000), bc.GetUtilityTokenBalance(priv0ScriptHash))
 	// info for getblockheader rpc tests
 	t.Logf("header hash: %s", b.Hash().StringLE())
 	buf := io.NewBufBinWriter()
 	b.Header().EncodeBinary(buf.BinWriter)
 	t.Logf("header: %s", hex.EncodeToString(buf.Bytes()))
 
-	// Generate some blocks to be able to claim GAS for them.
-	_, err = bc.genBlocks(numOfEmptyBlocks)
-	require.NoError(t, err)
-
 	acc0, err := wallet.NewAccountFromWIF(priv0.WIF())
 	require.NoError(t, err)
 
-	// Make a NEO roundtrip (send to myself) and claim GAS.
-	txNeoRound := transaction.NewContractTX()
-	txNeoRound.Nonce = getNextNonce()
-	txNeoRound.Sender = priv0ScriptHash
-	txNeoRound.ValidUntilBlock = validUntilBlock
-	txNeoRound.AddInput(&transaction.Input{
-		PrevHash:  txMoveNeo.Hash(),
-		PrevIndex: 0,
-	})
-	txNeoRound.AddOutput(&transaction.Output{
-		AssetID:    GoverningTokenID(),
-		Amount:     neoAmount,
-		ScriptHash: priv0.GetScriptHash(),
-		Position:   0,
-	})
-	txNeoRound.Data = new(transaction.ContractTX)
-	require.NoError(t, addNetworkFee(bc, txNeoRound, acc0))
-	require.NoError(t, acc0.SignTx(txNeoRound))
-	b = bc.newBlock(txNeoRound)
-	require.NoError(t, bc.AddBlock(b))
-	t.Logf("txNeoRound: %s", txNeoRound.Hash().StringLE())
-
-	claim := new(transaction.ClaimTX)
-	claim.Claims = append(claim.Claims, transaction.Input{
-		PrevHash:  txMoveNeo.Hash(),
-		PrevIndex: 0,
-	})
-	txClaim := transaction.NewClaimTX(claim)
-	txClaim.Nonce = getNextNonce()
-	txClaim.ValidUntilBlock = validUntilBlock
-	txClaim.Sender = priv0ScriptHash
-	txClaim.Data = claim
-	neoGas, sysGas, err := bc.CalculateClaimable(neoAmount, 1, bc.BlockHeight())
-	require.NoError(t, err)
-	gasOwned := neoGas + sysGas
-	txClaim.AddOutput(&transaction.Output{
-		AssetID:    UtilityTokenID(),
-		Amount:     gasOwned,
-		ScriptHash: priv0.GetScriptHash(),
-		Position:   0,
-	})
-	require.NoError(t, addNetworkFee(bc, txClaim, acc0))
-	require.NoError(t, acc0.SignTx(txClaim))
-	b = bc.newBlock(txClaim)
-	require.NoError(t, bc.AddBlock(b))
-	t.Logf("txClaim: %s", txClaim.Hash().StringLE())
-
 	// Push some contract into the chain.
 	avm, err := ioutil.ReadFile(prefix + "test_contract.avm")
 	require.NoError(t, err)
@@ -297,21 +240,10 @@ func TestCreateBasicChain(t *testing.T) {
 	txScript := script.Bytes()
 
 	invFee := util.Fixed8FromFloat(100)
-	txDeploy := transaction.NewInvocationTX(txScript, invFee)
+	txDeploy := transaction.New(txScript, invFee)
 	txDeploy.Nonce = getNextNonce()
 	txDeploy.ValidUntilBlock = validUntilBlock
 	txDeploy.Sender = priv0ScriptHash
-	txDeploy.AddInput(&transaction.Input{
-		PrevHash:  txClaim.Hash(),
-		PrevIndex: 0,
-	})
-	txDeploy.AddOutput(&transaction.Output{
-		AssetID:    UtilityTokenID(),
-		Amount:     gasOwned - invFee,
-		ScriptHash: priv0.GetScriptHash(),
-		Position:   0,
-	})
-	gasOwned -= invFee
 	require.NoError(t, addNetworkFee(bc, txDeploy, acc0))
 	require.NoError(t, acc0.SignTx(txDeploy))
 	b = bc.newBlock(txDeploy)
@@ -322,7 +254,7 @@ func TestCreateBasicChain(t *testing.T) {
 	script = io.NewBufBinWriter()
 	emit.AppCallWithOperationAndArgs(script.BinWriter, hash.Hash160(avm), "Put", "testkey", "testvalue")
 
-	txInv := transaction.NewInvocationTX(script.Bytes(), 0)
+	txInv := transaction.New(script.Bytes(), 0)
 	txInv.Nonce = getNextNonce()
 	txInv.ValidUntilBlock = validUntilBlock
 	txInv.Sender = priv0ScriptHash
@@ -333,26 +265,18 @@ func TestCreateBasicChain(t *testing.T) {
 	t.Logf("txInv: %s", txInv.Hash().StringLE())
 
 	priv1 := testchain.PrivateKeyByID(1)
-	txNeo0to1 := transaction.NewContractTX()
+	txNeo0to1 := newNEP5Transfer(neoHash, priv0ScriptHash, priv1.GetScriptHash(), 1000)
 	txNeo0to1.Nonce = getNextNonce()
 	txNeo0to1.ValidUntilBlock = validUntilBlock
 	txNeo0to1.Sender = priv0ScriptHash
-	txNeo0to1.Data = new(transaction.ContractTX)
-	txNeo0to1.AddInput(&transaction.Input{
-		PrevHash:  txNeoRound.Hash(),
-		PrevIndex: 0,
-	})
-	txNeo0to1.AddOutput(&transaction.Output{
-		AssetID:    GoverningTokenID(),
-		Amount:     util.Fixed8FromInt64(1000),
-		ScriptHash: priv1.GetScriptHash(),
-	})
-	txNeo0to1.AddOutput(&transaction.Output{
-		AssetID:    GoverningTokenID(),
-		Amount:     neoAmount - util.Fixed8FromInt64(1000),
-		ScriptHash: priv0.GetScriptHash(),
-	})
-
+	txNeo0to1.Cosigners = []transaction.Cosigner{
+		{
+			Account:          priv0ScriptHash,
+			Scopes:           transaction.CalledByEntry,
+			AllowedContracts: nil,
+			AllowedGroups:    nil,
+		},
+	}
 	require.NoError(t, addNetworkFee(bc, txNeo0to1, acc0))
 	require.NoError(t, acc0.SignTx(txNeo0to1))
 	b = bc.newBlock(txNeo0to1)
@@ -361,7 +285,7 @@ func TestCreateBasicChain(t *testing.T) {
 	sh := hash.Hash160(avm)
 	w := io.NewBufBinWriter()
 	emit.AppCallWithOperationAndArgs(w.BinWriter, sh, "init")
-	initTx := transaction.NewInvocationTX(w.Bytes(), 0)
+	initTx := transaction.New(w.Bytes(), 0)
 	initTx.Nonce = getNextNonce()
 	initTx.ValidUntilBlock = validUntilBlock
 	initTx.Sender = priv0ScriptHash
@@ -384,7 +308,7 @@ func TestCreateBasicChain(t *testing.T) {
 
 	b = bc.newBlock(initTx, transferTx)
 	require.NoError(t, bc.AddBlock(b))
-	t.Logf("recieveRublesTx: %v", transferTx.Hash().StringBE())
+	t.Logf("recieveRublesTx: %v", transferTx.Hash().StringLE())
 
 	transferTx = newNEP5Transfer(sh, priv0.GetScriptHash(), priv1.GetScriptHash(), 123)
 	transferTx.Nonce = getNextNonce()
@@ -403,7 +327,7 @@ func TestCreateBasicChain(t *testing.T) {
 
 	b = bc.newBlock(transferTx)
 	require.NoError(t, bc.AddBlock(b))
-	t.Logf("sendRublesTx: %v", transferTx.Hash().StringBE())
+	t.Logf("sendRublesTx: %v", transferTx.Hash().StringLE())
 
 	if saveChain {
 		outStream, err := os.Create(prefix + "testblocks.acc")
@@ -427,26 +351,21 @@ func TestCreateBasicChain(t *testing.T) {
 		}
 	}
 
-	// Make a NEO roundtrip (send to myself) and claim GAS.
-	txNeoRound = transaction.NewContractTX()
-	txNeoRound.Nonce = getNextNonce()
-	txNeoRound.ValidUntilBlock = validUntilBlock
-	txNeoRound.Sender = priv0ScriptHash
-	txNeoRound.AddInput(&transaction.Input{
-		PrevHash:  txNeo0to1.Hash(),
-		PrevIndex: 1,
-	})
-	txNeoRound.AddOutput(&transaction.Output{
-		AssetID:    GoverningTokenID(),
-		Amount:     neoAmount - util.Fixed8FromInt64(1000),
-		ScriptHash: priv0.GetScriptHash(),
-		Position:   0,
-	})
-	txNeoRound.Data = new(transaction.ContractTX)
-	require.NoError(t, addNetworkFee(bc, txNeoRound, acc0))
-	require.NoError(t, acc0.SignTx(txNeoRound))
+	// Prepare some transaction for future submission.
+	txSendRaw := newNEP5Transfer(neoHash, priv0ScriptHash, priv1.GetScriptHash(), int64(util.Fixed8FromInt64(1000)))
+	txSendRaw.ValidUntilBlock = validUntilBlock
+	txSendRaw.Nonce = getNextNonce()
+	txSendRaw.Sender = priv0ScriptHash
+	txSendRaw.Cosigners = []transaction.Cosigner{{
+		Account:          priv0ScriptHash,
+		Scopes:           transaction.CalledByEntry,
+		AllowedContracts: nil,
+		AllowedGroups:    nil,
+	}}
+	require.NoError(t, addNetworkFee(bc, txSendRaw, acc0))
+	require.NoError(t, acc0.SignTx(txSendRaw))
 	bw := io.NewBufBinWriter()
-	txNeoRound.EncodeBinary(bw.BinWriter)
+	txSendRaw.EncodeBinary(bw.BinWriter)
 	t.Logf("sendrawtransaction: %s", hex.EncodeToString(bw.Bytes()))
 }
 
@@ -456,7 +375,7 @@ func newNEP5Transfer(sc, from, to util.Uint160, amount int64) *transaction.Trans
 	emit.Opcode(w.BinWriter, opcode.ASSERT)
 
 	script := w.Bytes()
-	return transaction.NewInvocationTX(script, 0)
+	return transaction.New(script, 0)
 }
 
 func addSender(txs ...*transaction.Transaction) error {
diff --git a/pkg/core/interop_neo.go b/pkg/core/interop_neo.go
index 74b5e364e..5997a8764 100644
--- a/pkg/core/interop_neo.go
+++ b/pkg/core/interop_neo.go
@@ -4,20 +4,15 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
-	"math"
 	"sort"
 
 	"github.com/nspcc-dev/neo-go/pkg/core/interop"
-	"github.com/nspcc-dev/neo-go/pkg/core/interop/runtime"
 	"github.com/nspcc-dev/neo-go/pkg/core/state"
-	"github.com/nspcc-dev/neo-go/pkg/core/storage"
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
-	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/nspcc-dev/neo-go/pkg/vm"
-	gherr "github.com/pkg/errors"
 )
 
 const (
@@ -29,15 +24,6 @@ const (
 	MaxContractParametersNum = 252
 	// MaxContractStringLen is the maximum length for contract metadata strings.
 	MaxContractStringLen = 252
-	// MaxAssetNameLen is the maximum length of asset name.
-	MaxAssetNameLen = 1024
-	// MaxAssetPrecision is the maximum precision of asset.
-	MaxAssetPrecision = 8
-	// BlocksPerYear is a multiplier for asset renewal.
-	BlocksPerYear = 2000000
-	// DefaultAssetLifetime is the default lifetime of an asset (which differs
-	// from assets created by register tx).
-	DefaultAssetLifetime = 1 + BlocksPerYear
 )
 
 // headerGetVersion returns version from the header.
@@ -88,106 +74,6 @@ func txGetAttributes(ic *interop.Context, v *vm.VM) error {
 	return nil
 }
 
-// txGetInputs returns current transaction inputs.
-func txGetInputs(ic *interop.Context, v *vm.VM) error {
-	txInterface := v.Estack().Pop().Value()
-	tx, ok := txInterface.(*transaction.Transaction)
-	if !ok {
-		return errors.New("value is not a transaction")
-	}
-	if len(tx.Inputs) > vm.MaxArraySize {
-		return errors.New("too many inputs")
-	}
-	inputs := make([]vm.StackItem, 0, len(tx.Inputs))
-	for i := range tx.Inputs {
-		inputs = append(inputs, vm.NewInteropItem(&tx.Inputs[i]))
-	}
-	v.Estack().PushVal(inputs)
-	return nil
-}
-
-// txGetOutputs returns current transaction outputs.
-func txGetOutputs(ic *interop.Context, v *vm.VM) error {
-	txInterface := v.Estack().Pop().Value()
-	tx, ok := txInterface.(*transaction.Transaction)
-	if !ok {
-		return errors.New("value is not a transaction")
-	}
-	if len(tx.Outputs) > vm.MaxArraySize {
-		return errors.New("too many outputs")
-	}
-	outputs := make([]vm.StackItem, 0, len(tx.Outputs))
-	for i := range tx.Outputs {
-		outputs = append(outputs, vm.NewInteropItem(&tx.Outputs[i]))
-	}
-	v.Estack().PushVal(outputs)
-	return nil
-}
-
-// txGetReferences returns current transaction references.
-func txGetReferences(ic *interop.Context, v *vm.VM) error {
-	txInterface := v.Estack().Pop().Value()
-	tx, ok := txInterface.(*transaction.Transaction)
-	if !ok {
-		return fmt.Errorf("type mismatch: %T is not a Transaction", txInterface)
-	}
-	refs, err := ic.Chain.References(tx)
-	if err != nil {
-		return err
-	}
-	if len(refs) > vm.MaxArraySize {
-		return errors.New("too many references")
-	}
-
-	stackrefs := make([]vm.StackItem, 0, len(refs))
-	for i := range tx.Inputs {
-		for j := range refs {
-			if refs[j].In == tx.Inputs[i] {
-				stackrefs = append(stackrefs, vm.NewInteropItem(refs[j]))
-				break
-			}
-		}
-	}
-	v.Estack().PushVal(stackrefs)
-	return nil
-}
-
-// txGetType returns current transaction type.
-func txGetType(ic *interop.Context, v *vm.VM) error {
-	txInterface := v.Estack().Pop().Value()
-	tx, ok := txInterface.(*transaction.Transaction)
-	if !ok {
-		return errors.New("value is not a transaction")
-	}
-	v.Estack().PushVal(int(tx.Type))
-	return nil
-}
-
-// txGetUnspentCoins returns current transaction unspent coins.
-func txGetUnspentCoins(ic *interop.Context, v *vm.VM) error {
-	txInterface := v.Estack().Pop().Value()
-	tx, ok := txInterface.(*transaction.Transaction)
-	if !ok {
-		return errors.New("value is not a transaction")
-	}
-	ucs, err := ic.DAO.GetUnspentCoinState(tx.Hash())
-	if err == storage.ErrKeyNotFound {
-		v.Estack().PushVal([]vm.StackItem{})
-		return nil
-	} else if err != nil {
-		return errors.New("no unspent coin state found")
-	}
-
-	items := make([]vm.StackItem, 0, len(ucs.States))
-	for i := range items {
-		if ucs.States[i].State&state.CoinSpent == 0 {
-			items = append(items, vm.NewInteropItem(&ucs.States[i].Output))
-		}
-	}
-	v.Estack().PushVal(items)
-	return nil
-}
-
 // txGetWitnesses returns current transaction witnesses.
 func txGetWitnesses(ic *interop.Context, v *vm.VM) error {
 	txInterface := v.Estack().Pop().Value()
@@ -206,24 +92,6 @@ func txGetWitnesses(ic *interop.Context, v *vm.VM) error {
 	return nil
 }
 
-// invocationTx_GetScript returns invocation script from the current transaction.
-func invocationTxGetScript(ic *interop.Context, v *vm.VM) error {
-	txInterface := v.Estack().Pop().Value()
-	tx, ok := txInterface.(*transaction.Transaction)
-	if !ok {
-		return errors.New("value is not a transaction")
-	}
-	inv, ok := tx.Data.(*transaction.InvocationTX)
-	if tx.Type != transaction.InvocationType || !ok {
-		return errors.New("value is not an invocation transaction")
-	}
-	// It's important not to share inv.Script slice with the code running in VM.
-	script := make([]byte, len(inv.Script))
-	copy(script, inv.Script)
-	v.Estack().PushVal(script)
-	return nil
-}
-
 // witnessGetVerificationScript returns current witness' script.
 func witnessGetVerificationScript(ic *interop.Context, v *vm.VM) error {
 	witInterface := v.Estack().Pop().Value()
@@ -238,84 +106,6 @@ func witnessGetVerificationScript(ic *interop.Context, v *vm.VM) error {
 	return nil
 }
 
-// popInputFromVM returns transaction.Input from the first estack element.
-func popInputFromVM(v *vm.VM) (*transaction.Input, error) {
-	inInterface := v.Estack().Pop().Value()
-	input, ok := inInterface.(*transaction.Input)
-	if !ok {
-		txio, ok := inInterface.(transaction.InOut)
-		if !ok {
-			return nil, fmt.Errorf("type mismatch: %T is not an Input or InOut", inInterface)
-		}
-		input = &txio.In
-	}
-	return input, nil
-}
-
-// inputGetHash returns hash from the given input.
-func inputGetHash(ic *interop.Context, v *vm.VM) error {
-	input, err := popInputFromVM(v)
-	if err != nil {
-		return err
-	}
-	v.Estack().PushVal(input.PrevHash.BytesBE())
-	return nil
-}
-
-// inputGetIndex returns index from the given input.
-func inputGetIndex(ic *interop.Context, v *vm.VM) error {
-	input, err := popInputFromVM(v)
-	if err != nil {
-		return err
-	}
-	v.Estack().PushVal(input.PrevIndex)
-	return nil
-}
-
-// popOutputFromVM returns transaction.Input from the first estack element.
-func popOutputFromVM(v *vm.VM) (*transaction.Output, error) {
-	outInterface := v.Estack().Pop().Value()
-	output, ok := outInterface.(*transaction.Output)
-	if !ok {
-		txio, ok := outInterface.(transaction.InOut)
-		if !ok {
-			return nil, fmt.Errorf("type mismatch: %T is not an Output or InOut", outInterface)
-		}
-		output = &txio.Out
-	}
-	return output, nil
-}
-
-// outputGetAssetId returns asset ID from the given output.
-func outputGetAssetID(ic *interop.Context, v *vm.VM) error {
-	output, err := popOutputFromVM(v)
-	if err != nil {
-		return err
-	}
-	v.Estack().PushVal(output.AssetID.BytesBE())
-	return nil
-}
-
-// outputGetScriptHash returns scripthash from the given output.
-func outputGetScriptHash(ic *interop.Context, v *vm.VM) error {
-	output, err := popOutputFromVM(v)
-	if err != nil {
-		return err
-	}
-	v.Estack().PushVal(output.ScriptHash.BytesBE())
-	return nil
-}
-
-// outputGetValue returns value (amount) from the given output.
-func outputGetValue(ic *interop.Context, v *vm.VM) error {
-	output, err := popOutputFromVM(v)
-	if err != nil {
-		return err
-	}
-	v.Estack().PushVal(int64(output.Amount))
-	return nil
-}
-
 // attrGetData returns tx attribute data.
 func attrGetData(ic *interop.Context, v *vm.VM) error {
 	attrInterface := v.Estack().Pop().Value()
@@ -353,21 +143,6 @@ func bcGetAccount(ic *interop.Context, v *vm.VM) error {
 	return nil
 }
 
-// bcGetAsset returns an asset.
-func bcGetAsset(ic *interop.Context, v *vm.VM) error {
-	asbytes := v.Estack().Pop().Bytes()
-	ashash, err := util.Uint256DecodeBytesBE(asbytes)
-	if err != nil {
-		return err
-	}
-	as, err := ic.DAO.GetAssetState(ashash)
-	if err != nil {
-		return errors.New("asset not found")
-	}
-	v.Estack().PushVal(vm.NewInteropItem(as))
-	return nil
-}
-
 // accountGetBalance returns balance for a given account.
 func accountGetBalance(ic *interop.Context, v *vm.VM) error {
 	accInterface := v.Estack().Pop().Value()
@@ -571,203 +346,6 @@ func contractMigrate(ic *interop.Context, v *vm.VM) error {
 	return contractDestroy(ic, v)
 }
 
-// assetCreate creates an asset.
-func assetCreate(ic *interop.Context, v *vm.VM) error {
-	if ic.Trigger != trigger.Application {
-		return errors.New("can't create asset when not triggered by an application")
-	}
-	atype := transaction.AssetType(v.Estack().Pop().BigInt().Int64())
-	switch atype {
-	case transaction.Currency, transaction.Share, transaction.Invoice, transaction.Token:
-		// ok
-	default:
-		return fmt.Errorf("wrong asset type: %x", atype)
-	}
-	name := string(v.Estack().Pop().Bytes())
-	if len(name) > MaxAssetNameLen {
-		return errors.New("too big name")
-	}
-	amount := util.Fixed8(v.Estack().Pop().BigInt().Int64())
-	if amount == util.Fixed8(0) {
-		return errors.New("asset amount can't be zero")
-	}
-	if amount < -util.Satoshi() {
-		return errors.New("asset amount can't be negative (except special -Satoshi value")
-	}
-	if atype == transaction.Invoice && amount != -util.Satoshi() {
-		return errors.New("invoice assets can only have -Satoshi amount")
-	}
-	precision := byte(v.Estack().Pop().BigInt().Int64())
-	if precision > MaxAssetPrecision {
-		return fmt.Errorf("can't have asset precision of more than %d", MaxAssetPrecision)
-	}
-	if atype == transaction.Share && precision != 0 {
-		return errors.New("share assets can only have zero precision")
-	}
-	if amount != -util.Satoshi() && (int64(amount)%int64(math.Pow10(int(MaxAssetPrecision-precision))) != 0) {
-		return errors.New("given asset amount has fractional component")
-	}
-	owner, err := keys.NewPublicKeyFromBytes(v.Estack().Pop().Bytes())
-	if err != nil {
-		return gherr.Wrap(err, "failed to get owner key")
-	}
-	if owner.IsInfinity() {
-		return errors.New("can't have infinity as an owner key")
-	}
-	witnessOk, err := runtime.CheckKeyedWitness(ic, v, owner)
-	if err != nil {
-		return err
-	}
-	if !witnessOk {
-		return errors.New("witness check didn't succeed")
-	}
-	admin, err := util.Uint160DecodeBytesBE(v.Estack().Pop().Bytes())
-	if err != nil {
-		return gherr.Wrap(err, "failed to get admin")
-	}
-	issuer, err := util.Uint160DecodeBytesBE(v.Estack().Pop().Bytes())
-	if err != nil {
-		return gherr.Wrap(err, "failed to get issuer")
-	}
-	asset := &state.Asset{
-		ID:         ic.Tx.Hash(),
-		AssetType:  atype,
-		Name:       name,
-		Amount:     amount,
-		Precision:  precision,
-		Owner:      *owner,
-		Admin:      admin,
-		Issuer:     issuer,
-		Expiration: ic.Chain.BlockHeight() + DefaultAssetLifetime,
-	}
-	err = ic.DAO.PutAssetState(asset)
-	if err != nil {
-		return gherr.Wrap(err, "failed to Store asset")
-	}
-	v.Estack().PushVal(vm.NewInteropItem(asset))
-	return nil
-}
-
-// assetGetAdmin returns asset admin.
-func assetGetAdmin(ic *interop.Context, v *vm.VM) error {
-	asInterface := v.Estack().Pop().Value()
-	as, ok := asInterface.(*state.Asset)
-	if !ok {
-		return fmt.Errorf("%T is not an asset state", as)
-	}
-	v.Estack().PushVal(as.Admin.BytesBE())
-	return nil
-}
-
-// assetGetAmount returns the overall amount of asset available.
-func assetGetAmount(ic *interop.Context, v *vm.VM) error {
-	asInterface := v.Estack().Pop().Value()
-	as, ok := asInterface.(*state.Asset)
-	if !ok {
-		return fmt.Errorf("%T is not an asset state", as)
-	}
-	v.Estack().PushVal(int64(as.Amount))
-	return nil
-}
-
-// assetGetAssetId returns the id of an asset.
-func assetGetAssetID(ic *interop.Context, v *vm.VM) error {
-	asInterface := v.Estack().Pop().Value()
-	as, ok := asInterface.(*state.Asset)
-	if !ok {
-		return fmt.Errorf("%T is not an asset state", as)
-	}
-	v.Estack().PushVal(as.ID.BytesBE())
-	return nil
-}
-
-// assetGetAssetType returns type of an asset.
-func assetGetAssetType(ic *interop.Context, v *vm.VM) error {
-	asInterface := v.Estack().Pop().Value()
-	as, ok := asInterface.(*state.Asset)
-	if !ok {
-		return fmt.Errorf("%T is not an asset state", as)
-	}
-	v.Estack().PushVal(int(as.AssetType))
-	return nil
-}
-
-// assetGetAvailable returns available (not yet issued) amount of asset.
-func assetGetAvailable(ic *interop.Context, v *vm.VM) error {
-	asInterface := v.Estack().Pop().Value()
-	as, ok := asInterface.(*state.Asset)
-	if !ok {
-		return fmt.Errorf("%T is not an asset state", as)
-	}
-	v.Estack().PushVal(int(as.Available))
-	return nil
-}
-
-// assetGetIssuer returns issuer of an asset.
-func assetGetIssuer(ic *interop.Context, v *vm.VM) error {
-	asInterface := v.Estack().Pop().Value()
-	as, ok := asInterface.(*state.Asset)
-	if !ok {
-		return fmt.Errorf("%T is not an asset state", as)
-	}
-	v.Estack().PushVal(as.Issuer.BytesBE())
-	return nil
-}
-
-// assetGetOwner returns owner of an asset.
-func assetGetOwner(ic *interop.Context, v *vm.VM) error {
-	asInterface := v.Estack().Pop().Value()
-	as, ok := asInterface.(*state.Asset)
-	if !ok {
-		return fmt.Errorf("%T is not an asset state", as)
-	}
-	v.Estack().PushVal(as.Owner.Bytes())
-	return nil
-}
-
-// assetGetPrecision returns precision used to measure this asset.
-func assetGetPrecision(ic *interop.Context, v *vm.VM) error {
-	asInterface := v.Estack().Pop().Value()
-	as, ok := asInterface.(*state.Asset)
-	if !ok {
-		return fmt.Errorf("%T is not an asset state", as)
-	}
-	v.Estack().PushVal(int(as.Precision))
-	return nil
-}
-
-// assetRenew updates asset expiration date.
-func assetRenew(ic *interop.Context, v *vm.VM) error {
-	if ic.Trigger != trigger.Application {
-		return errors.New("can't create asset when not triggered by an application")
-	}
-	asInterface := v.Estack().Pop().Value()
-	as, ok := asInterface.(*state.Asset)
-	if !ok {
-		return fmt.Errorf("%T is not an asset state", as)
-	}
-	years := byte(v.Estack().Pop().BigInt().Int64())
-	// Not sure why C# code regets an asset from the Store, but we also do it.
-	asset, err := ic.DAO.GetAssetState(as.ID)
-	if err != nil {
-		return errors.New("can't renew non-existent asset")
-	}
-	if asset.Expiration < ic.Chain.BlockHeight()+1 {
-		asset.Expiration = ic.Chain.BlockHeight() + 1
-	}
-	expiration := uint64(asset.Expiration) + uint64(years)*BlocksPerYear
-	if expiration > math.MaxUint32 {
-		expiration = math.MaxUint32
-	}
-	asset.Expiration = uint32(expiration)
-	err = ic.DAO.PutAssetState(asset)
-	if err != nil {
-		return gherr.Wrap(err, "failed to Store asset")
-	}
-	v.Estack().PushVal(expiration)
-	return nil
-}
-
 // runtimeSerialize serializes top stack item into a ByteArray.
 func runtimeSerialize(_ *interop.Context, v *vm.VM) error {
 	return vm.RuntimeSerialize(v)
diff --git a/pkg/core/interop_neo_test.go b/pkg/core/interop_neo_test.go
index e9ec0b2fe..90e1ce2ae 100644
--- a/pkg/core/interop_neo_test.go
+++ b/pkg/core/interop_neo_test.go
@@ -25,18 +25,13 @@ import (
 )
 
 /*  Missing tests:
- *  TestTxGetReferences
- *  TestTxGetUnspentCoins
  *  TestTxGetWitnesses
  *  TestBcGetAccount
- *  TestBcGetAsset
  *  TestAccountGetBalance
  *  TestAccountIsStandard
  *  TestCreateContractStateFromVM
  *  TestContractCreate
  *  TestContractMigrate
- *  TestAssetCreate
- *  TestAssetRenew
  *  TestRuntimeSerialize
  *  TestRuntimeDeserialize
  */
@@ -192,47 +187,6 @@ func TestTxGetAttributes(t *testing.T) {
 	require.Equal(t, tx.Attributes[0].Usage, value[0].Value().(*transaction.Attribute).Usage)
 }
 
-func TestTxGetInputs(t *testing.T) {
-	v, tx, context, chain := createVMAndPushTX(t)
-	defer chain.Close()
-
-	err := txGetInputs(context, v)
-	require.NoError(t, err)
-	value := v.Estack().Pop().Value().([]vm.StackItem)
-	require.Equal(t, tx.Inputs[0], *value[0].Value().(*transaction.Input))
-}
-
-func TestTxGetOutputs(t *testing.T) {
-	v, tx, context, chain := createVMAndPushTX(t)
-	defer chain.Close()
-
-	err := txGetOutputs(context, v)
-	require.NoError(t, err)
-	value := v.Estack().Pop().Value().([]vm.StackItem)
-	require.Equal(t, tx.Outputs[0], *value[0].Value().(*transaction.Output))
-}
-
-func TestTxGetType(t *testing.T) {
-	v, tx, context, chain := createVMAndPushTX(t)
-	defer chain.Close()
-
-	err := txGetType(context, v)
-	require.NoError(t, err)
-	value := v.Estack().Pop().Value().(*big.Int)
-	require.Equal(t, big.NewInt(int64(tx.Type)), value)
-}
-
-func TestInvocationTxGetScript(t *testing.T) {
-	v, tx, context, chain := createVMAndPushTX(t)
-	defer chain.Close()
-
-	err := invocationTxGetScript(context, v)
-	require.NoError(t, err)
-	value := v.Estack().Pop().Value().([]byte)
-	inv := tx.Data.(*transaction.InvocationTX)
-	require.Equal(t, inv.Script, value)
-}
-
 func TestWitnessGetVerificationScript(t *testing.T) {
 	v := vm.New()
 	script := []byte{byte(opcode.PUSHM1), byte(opcode.RET)}
@@ -290,14 +244,14 @@ func TestECDSAVerify(t *testing.T) {
 	})
 
 	t.Run("signed interop item", func(t *testing.T) {
-		tx := transaction.NewInvocationTX([]byte{0, 1, 2}, 1)
+		tx := transaction.New([]byte{0, 1, 2}, 1)
 		msg := tx.GetSignedPart()
 		sign := priv.Sign(msg)
 		runCase(t, false, true, sign, priv.PublicKey().Bytes(), vm.NewInteropItem(tx))
 	})
 
 	t.Run("signed script container", func(t *testing.T) {
-		tx := transaction.NewInvocationTX([]byte{0, 1, 2}, 1)
+		tx := transaction.New([]byte{0, 1, 2}, 1)
 		msg := tx.GetSignedPart()
 		sign := priv.Sign(msg)
 		ic.Container = tx
@@ -325,81 +279,6 @@ func TestECDSAVerify(t *testing.T) {
 	})
 }
 
-func TestPopInputFromVM(t *testing.T) {
-	v, tx, _, chain := createVMAndTX(t)
-	defer chain.Close()
-	v.Estack().PushVal(vm.NewInteropItem(&tx.Inputs[0]))
-
-	input, err := popInputFromVM(v)
-	require.NoError(t, err)
-	require.Equal(t, tx.Inputs[0], *input)
-}
-
-func TestInputGetHash(t *testing.T) {
-	v, tx, context, chain := createVMAndTX(t)
-	defer chain.Close()
-	v.Estack().PushVal(vm.NewInteropItem(&tx.Inputs[0]))
-
-	err := inputGetHash(context, v)
-	require.NoError(t, err)
-	hash := v.Estack().Pop().Value()
-	require.Equal(t, tx.Inputs[0].PrevHash.BytesBE(), hash)
-}
-
-func TestInputGetIndex(t *testing.T) {
-	v, tx, context, chain := createVMAndTX(t)
-	defer chain.Close()
-	v.Estack().PushVal(vm.NewInteropItem(&tx.Inputs[0]))
-
-	err := inputGetIndex(context, v)
-	require.NoError(t, err)
-	index := v.Estack().Pop().Value()
-	require.Equal(t, big.NewInt(int64(tx.Inputs[0].PrevIndex)), index)
-}
-
-func TestPopOutputFromVM(t *testing.T) {
-	v, tx, _, chain := createVMAndTX(t)
-	defer chain.Close()
-	v.Estack().PushVal(vm.NewInteropItem(&tx.Outputs[0]))
-
-	output, err := popOutputFromVM(v)
-	require.NoError(t, err)
-	require.Equal(t, tx.Outputs[0], *output)
-}
-
-func TestOutputGetAssetID(t *testing.T) {
-	v, tx, context, chain := createVMAndTX(t)
-	defer chain.Close()
-	v.Estack().PushVal(vm.NewInteropItem(&tx.Outputs[0]))
-
-	err := outputGetAssetID(context, v)
-	require.NoError(t, err)
-	assetID := v.Estack().Pop().Value()
-	require.Equal(t, tx.Outputs[0].AssetID.BytesBE(), assetID)
-}
-
-func TestOutputGetScriptHash(t *testing.T) {
-	v, tx, context, chain := createVMAndTX(t)
-	defer chain.Close()
-	v.Estack().PushVal(vm.NewInteropItem(&tx.Outputs[0]))
-
-	err := outputGetScriptHash(context, v)
-	require.NoError(t, err)
-	scriptHash := v.Estack().Pop().Value()
-	require.Equal(t, tx.Outputs[0].ScriptHash.BytesBE(), scriptHash)
-}
-
-func TestOutputGetValue(t *testing.T) {
-	v, tx, context, chain := createVMAndTX(t)
-	defer chain.Close()
-	v.Estack().PushVal(vm.NewInteropItem(&tx.Outputs[0]))
-
-	err := outputGetValue(context, v)
-	require.NoError(t, err)
-	amount := v.Estack().Pop().Value()
-	require.Equal(t, big.NewInt(int64(tx.Outputs[0].Amount)), amount)
-}
-
 func TestAttrGetData(t *testing.T) {
 	v, tx, context, chain := createVMAndTX(t)
 	defer chain.Close()
@@ -455,95 +334,7 @@ func TestContractIsPayable(t *testing.T) {
 	require.Equal(t, contractState.IsPayable(), isPayable)
 }
 
-func TestAssetGetAdmin(t *testing.T) {
-	v, assetState, context, chain := createVMAndAssetState(t)
-	defer chain.Close()
-	v.Estack().PushVal(vm.NewInteropItem(assetState))
-
-	err := assetGetAdmin(context, v)
-	require.NoError(t, err)
-	admin := v.Estack().Pop().Value()
-	require.Equal(t, assetState.Admin.BytesBE(), admin)
-}
-
-func TestAssetGetAmount(t *testing.T) {
-	v, assetState, context, chain := createVMAndAssetState(t)
-	defer chain.Close()
-	v.Estack().PushVal(vm.NewInteropItem(assetState))
-
-	err := assetGetAmount(context, v)
-	require.NoError(t, err)
-	amount := v.Estack().Pop().Value()
-	require.Equal(t, big.NewInt(int64(assetState.Amount)), amount)
-}
-
-func TestAssetGetAssetID(t *testing.T) {
-	v, assetState, context, chain := createVMAndAssetState(t)
-	defer chain.Close()
-	v.Estack().PushVal(vm.NewInteropItem(assetState))
-
-	err := assetGetAssetID(context, v)
-	require.NoError(t, err)
-	assetID := v.Estack().Pop().Value()
-	require.Equal(t, assetState.ID.BytesBE(), assetID)
-}
-
-func TestAssetGetAssetType(t *testing.T) {
-	v, assetState, context, chain := createVMAndAssetState(t)
-	defer chain.Close()
-	v.Estack().PushVal(vm.NewInteropItem(assetState))
-
-	err := assetGetAssetType(context, v)
-	require.NoError(t, err)
-	assetType := v.Estack().Pop().Value()
-	require.Equal(t, big.NewInt(int64(assetState.AssetType)), assetType)
-}
-
-func TestAssetGetAvailable(t *testing.T) {
-	v, assetState, context, chain := createVMAndAssetState(t)
-	defer chain.Close()
-	v.Estack().PushVal(vm.NewInteropItem(assetState))
-
-	err := assetGetAvailable(context, v)
-	require.NoError(t, err)
-	available := v.Estack().Pop().Value()
-	require.Equal(t, big.NewInt(int64(assetState.Available)), available)
-}
-
-func TestAssetGetIssuer(t *testing.T) {
-	v, assetState, context, chain := createVMAndAssetState(t)
-	defer chain.Close()
-	v.Estack().PushVal(vm.NewInteropItem(assetState))
-
-	err := assetGetIssuer(context, v)
-	require.NoError(t, err)
-	issuer := v.Estack().Pop().Value()
-	require.Equal(t, assetState.Issuer.BytesBE(), issuer)
-}
-
-func TestAssetGetOwner(t *testing.T) {
-	v, assetState, context, chain := createVMAndAssetState(t)
-	defer chain.Close()
-	v.Estack().PushVal(vm.NewInteropItem(assetState))
-
-	err := assetGetOwner(context, v)
-	require.NoError(t, err)
-	owner := v.Estack().Pop().Value()
-	require.Equal(t, assetState.Owner.Bytes(), owner)
-}
-
-func TestAssetGetPrecision(t *testing.T) {
-	v, assetState, context, chain := createVMAndAssetState(t)
-	defer chain.Close()
-	v.Estack().PushVal(vm.NewInteropItem(assetState))
-
-	err := assetGetPrecision(context, v)
-	require.NoError(t, err)
-	precision := v.Estack().Pop().Value()
-	require.Equal(t, big.NewInt(int64(assetState.Precision)), precision)
-}
-
-// Helper functions to create VM, InteropContext, TX, Account, Contract, Asset.
+// Helper functions to create VM, InteropContext, TX, Account, Contract.
 
 func createVMAndPushBlock(t *testing.T) (*vm.VM, *block.Block, *interop.Context, *Blockchain) {
 	v := vm.New()
@@ -560,29 +351,6 @@ func createVMAndPushTX(t *testing.T) (*vm.VM, *transaction.Transaction, *interop
 	return v, tx, context, chain
 }
 
-func createVMAndAssetState(t *testing.T) (*vm.VM, *state.Asset, *interop.Context, *Blockchain) {
-	v := vm.New()
-	assetState := &state.Asset{
-		ID:         util.Uint256{},
-		AssetType:  transaction.GoverningToken,
-		Name:       "TestAsset",
-		Amount:     1,
-		Available:  2,
-		Precision:  1,
-		FeeMode:    1,
-		FeeAddress: random.Uint160(),
-		Owner:      keys.PublicKey{X: big.NewInt(1), Y: big.NewInt(1)},
-		Admin:      random.Uint160(),
-		Issuer:     random.Uint160(),
-		Expiration: 10,
-		IsFrozen:   false,
-	}
-
-	chain := newTestChain(t)
-	context := chain.newInteropContext(trigger.Application, dao.NewSimple(storage.NewMemoryStore()), nil, nil)
-	return v, assetState, context, chain
-}
-
 func createVMAndContractState(t *testing.T) (*vm.VM, *state.Contract, *interop.Context, *Blockchain) {
 	v := vm.New()
 	contractState := &state.Contract{
@@ -617,7 +385,7 @@ func createVMAndAccState(t *testing.T) (*vm.VM, *state.Account, *interop.Context
 func createVMAndTX(t *testing.T) (*vm.VM, *transaction.Transaction, *interop.Context, *Blockchain) {
 	v := vm.New()
 	script := []byte{byte(opcode.PUSH1), byte(opcode.RET)}
-	tx := transaction.NewInvocationTX(script, 0)
+	tx := transaction.New(script, 0)
 
 	bytes := make([]byte, 1)
 	attributes := append(tx.Attributes, transaction.Attribute{
@@ -625,21 +393,7 @@ func createVMAndTX(t *testing.T) (*vm.VM, *transaction.Transaction, *interop.Con
 		Data:  bytes,
 	})
 
-	inputs := append(tx.Inputs, transaction.Input{
-		PrevHash:  random.Uint256(),
-		PrevIndex: 1,
-	})
-
-	outputs := append(tx.Outputs, transaction.Output{
-		AssetID:    random.Uint256(),
-		Amount:     10,
-		ScriptHash: random.Uint160(),
-		Position:   1,
-	})
-
 	tx.Attributes = attributes
-	tx.Inputs = inputs
-	tx.Outputs = outputs
 	chain := newTestChain(t)
 	context := chain.newInteropContext(trigger.Application, dao.NewSimple(storage.NewMemoryStore()), nil, tx)
 	return v, tx, context, chain
diff --git a/pkg/core/interops.go b/pkg/core/interops.go
index 3a6aba2ea..a781bcdb5 100644
--- a/pkg/core/interops.go
+++ b/pkg/core/interops.go
@@ -105,23 +105,12 @@ var neoInterops = []interop.Function{
 	{Name: "Neo.Account.GetBalance", Func: accountGetBalance, Price: 1},
 	{Name: "Neo.Account.GetScriptHash", Func: accountGetScriptHash, Price: 1},
 	{Name: "Neo.Account.IsStandard", Func: accountIsStandard, Price: 100},
-	{Name: "Neo.Asset.Create", Func: assetCreate, Price: 0},
-	{Name: "Neo.Asset.GetAdmin", Func: assetGetAdmin, Price: 1},
-	{Name: "Neo.Asset.GetAmount", Func: assetGetAmount, Price: 1},
-	{Name: "Neo.Asset.GetAssetId", Func: assetGetAssetID, Price: 1},
-	{Name: "Neo.Asset.GetAssetType", Func: assetGetAssetType, Price: 1},
-	{Name: "Neo.Asset.GetAvailable", Func: assetGetAvailable, Price: 1},
-	{Name: "Neo.Asset.GetIssuer", Func: assetGetIssuer, Price: 1},
-	{Name: "Neo.Asset.GetOwner", Func: assetGetOwner, Price: 1},
-	{Name: "Neo.Asset.GetPrecision", Func: assetGetPrecision, Price: 1},
-	{Name: "Neo.Asset.Renew", Func: assetRenew, Price: 0},
 	{Name: "Neo.Attribute.GetData", Func: attrGetData, Price: 1},
 	{Name: "Neo.Attribute.GetUsage", Func: attrGetUsage, Price: 1},
 	{Name: "Neo.Block.GetTransaction", Func: blockGetTransaction, Price: 1},
 	{Name: "Neo.Block.GetTransactionCount", Func: blockGetTransactionCount, Price: 1},
 	{Name: "Neo.Block.GetTransactions", Func: blockGetTransactions, Price: 1},
 	{Name: "Neo.Blockchain.GetAccount", Func: bcGetAccount, Price: 100},
-	{Name: "Neo.Blockchain.GetAsset", Func: bcGetAsset, Price: 100},
 	{Name: "Neo.Blockchain.GetBlock", Func: bcGetBlock, Price: 200},
 	{Name: "Neo.Blockchain.GetContract", Func: bcGetContract, Price: 100},
 	{Name: "Neo.Blockchain.GetHeader", Func: bcGetHeader, Price: 100},
@@ -148,18 +137,12 @@ var neoInterops = []interop.Function{
 	{Name: "Neo.Header.GetPrevHash", Func: headerGetPrevHash, Price: 1},
 	{Name: "Neo.Header.GetTimestamp", Func: headerGetTimestamp, Price: 1},
 	{Name: "Neo.Header.GetVersion", Func: headerGetVersion, Price: 1},
-	{Name: "Neo.Input.GetHash", Func: inputGetHash, Price: 1},
-	{Name: "Neo.Input.GetIndex", Func: inputGetIndex, Price: 1},
-	{Name: "Neo.InvocationTransaction.GetScript", Func: invocationTxGetScript, Price: 1},
 	{Name: "Neo.Iterator.Concat", Func: iterator.Concat, Price: 1},
 	{Name: "Neo.Iterator.Create", Func: iterator.Create, Price: 1},
 	{Name: "Neo.Iterator.Key", Func: iterator.Key, Price: 1},
 	{Name: "Neo.Iterator.Keys", Func: iterator.Keys, Price: 1},
 	{Name: "Neo.Iterator.Values", Func: iterator.Values, Price: 1},
 	{Name: "Neo.Native.Deploy", Func: native.Deploy, Price: 1},
-	{Name: "Neo.Output.GetAssetId", Func: outputGetAssetID, Price: 1},
-	{Name: "Neo.Output.GetScriptHash", Func: outputGetScriptHash, Price: 1},
-	{Name: "Neo.Output.GetValue", Func: outputGetValue, Price: 1},
 	{Name: "Neo.Runtime.CheckWitness", Func: runtime.CheckWitness, Price: 200},
 	{Name: "Neo.Runtime.Deserialize", Func: runtimeDeserialize, Price: 1},
 	{Name: "Neo.Runtime.GetTime", Func: runtimeGetTime, Price: 1},
@@ -176,11 +159,6 @@ var neoInterops = []interop.Function{
 	{Name: "Neo.StorageContext.AsReadOnly", Func: storageContextAsReadOnly, Price: 1},
 	{Name: "Neo.Transaction.GetAttributes", Func: txGetAttributes, Price: 1},
 	{Name: "Neo.Transaction.GetHash", Func: txGetHash, Price: 1},
-	{Name: "Neo.Transaction.GetInputs", Func: txGetInputs, Price: 1},
-	{Name: "Neo.Transaction.GetOutputs", Func: txGetOutputs, Price: 1},
-	{Name: "Neo.Transaction.GetReferences", Func: txGetReferences, Price: 200},
-	{Name: "Neo.Transaction.GetType", Func: txGetType, Price: 1},
-	{Name: "Neo.Transaction.GetUnspentCoins", Func: txGetUnspentCoins, Price: 200},
 	{Name: "Neo.Transaction.GetWitnesses", Func: txGetWitnesses, Price: 200},
 	{Name: "Neo.Witness.GetVerificationScript", Func: witnessGetVerificationScript, Price: 100},
 
@@ -191,23 +169,12 @@ var neoInterops = []interop.Function{
 	// Old compatibility APIs.
 	{Name: "AntShares.Account.GetBalance", Func: accountGetBalance, Price: 1},
 	{Name: "AntShares.Account.GetScriptHash", Func: accountGetScriptHash, Price: 1},
-	{Name: "AntShares.Asset.Create", Func: assetCreate, Price: 0},
-	{Name: "AntShares.Asset.GetAdmin", Func: assetGetAdmin, Price: 1},
-	{Name: "AntShares.Asset.GetAmount", Func: assetGetAmount, Price: 1},
-	{Name: "AntShares.Asset.GetAssetId", Func: assetGetAssetID, Price: 1},
-	{Name: "AntShares.Asset.GetAssetType", Func: assetGetAssetType, Price: 1},
-	{Name: "AntShares.Asset.GetAvailable", Func: assetGetAvailable, Price: 1},
-	{Name: "AntShares.Asset.GetIssuer", Func: assetGetIssuer, Price: 1},
-	{Name: "AntShares.Asset.GetOwner", Func: assetGetOwner, Price: 1},
-	{Name: "AntShares.Asset.GetPrecision", Func: assetGetPrecision, Price: 1},
-	{Name: "AntShares.Asset.Renew", Func: assetRenew, Price: 0},
 	{Name: "AntShares.Attribute.GetData", Func: attrGetData, Price: 1},
 	{Name: "AntShares.Attribute.GetUsage", Func: attrGetUsage, Price: 1},
 	{Name: "AntShares.Block.GetTransaction", Func: blockGetTransaction, Price: 1},
 	{Name: "AntShares.Block.GetTransactionCount", Func: blockGetTransactionCount, Price: 1},
 	{Name: "AntShares.Block.GetTransactions", Func: blockGetTransactions, Price: 1},
 	{Name: "AntShares.Blockchain.GetAccount", Func: bcGetAccount, Price: 100},
-	{Name: "AntShares.Blockchain.GetAsset", Func: bcGetAsset, Price: 100},
 	{Name: "AntShares.Blockchain.GetBlock", Func: bcGetBlock, Price: 200},
 	{Name: "AntShares.Blockchain.GetContract", Func: bcGetContract, Price: 100},
 	{Name: "AntShares.Blockchain.GetHeader", Func: bcGetHeader, Price: 100},
@@ -224,11 +191,6 @@ var neoInterops = []interop.Function{
 	{Name: "AntShares.Header.GetPrevHash", Func: headerGetPrevHash, Price: 1},
 	{Name: "AntShares.Header.GetTimestamp", Func: headerGetTimestamp, Price: 1},
 	{Name: "AntShares.Header.GetVersion", Func: headerGetVersion, Price: 1},
-	{Name: "AntShares.Input.GetHash", Func: inputGetHash, Price: 1},
-	{Name: "AntShares.Input.GetIndex", Func: inputGetIndex, Price: 1},
-	{Name: "AntShares.Output.GetAssetId", Func: outputGetAssetID, Price: 1},
-	{Name: "AntShares.Output.GetScriptHash", Func: outputGetScriptHash, Price: 1},
-	{Name: "AntShares.Output.GetValue", Func: outputGetValue, Price: 1},
 	{Name: "AntShares.Runtime.CheckWitness", Func: runtime.CheckWitness, Price: 200},
 	{Name: "AntShares.Runtime.Log", Func: runtimeLog, Price: 1},
 	{Name: "AntShares.Runtime.Notify", Func: runtimeNotify, Price: 1},
@@ -238,10 +200,6 @@ var neoInterops = []interop.Function{
 	{Name: "AntShares.Storage.Put", Func: storagePut, Price: 0},
 	{Name: "AntShares.Transaction.GetAttributes", Func: txGetAttributes, Price: 1},
 	{Name: "AntShares.Transaction.GetHash", Func: txGetHash, Price: 1},
-	{Name: "AntShares.Transaction.GetInputs", Func: txGetInputs, Price: 1},
-	{Name: "AntShares.Transaction.GetOutputs", Func: txGetOutputs, Price: 1},
-	{Name: "AntShares.Transaction.GetReferences", Func: txGetReferences, Price: 200},
-	{Name: "AntShares.Transaction.GetType", Func: txGetType, Price: 1},
 }
 
 // initIDinInteropsSlice initializes IDs from names in one given
diff --git a/pkg/core/interops_test.go b/pkg/core/interops_test.go
index c1ca1bdfa..ee78b1aa6 100644
--- a/pkg/core/interops_test.go
+++ b/pkg/core/interops_test.go
@@ -34,15 +34,6 @@ func TestUnexpectedNonInterops(t *testing.T) {
 	funcs := []func(*interop.Context, *vm.VM) error{
 		accountGetBalance,
 		accountGetScriptHash,
-		assetGetAdmin,
-		assetGetAmount,
-		assetGetAssetID,
-		assetGetAssetType,
-		assetGetAvailable,
-		assetGetIssuer,
-		assetGetOwner,
-		assetGetPrecision,
-		assetRenew,
 		attrGetData,
 		attrGetUsage,
 		blockGetTransaction,
@@ -58,12 +49,6 @@ func TestUnexpectedNonInterops(t *testing.T) {
 		headerGetPrevHash,
 		headerGetTimestamp,
 		headerGetVersion,
-		inputGetHash,
-		inputGetIndex,
-		invocationTxGetScript,
-		outputGetAssetID,
-		outputGetScriptHash,
-		outputGetValue,
 		storageContextAsReadOnly,
 		storageDelete,
 		storageFind,
@@ -72,11 +57,6 @@ func TestUnexpectedNonInterops(t *testing.T) {
 		storagePutEx,
 		txGetAttributes,
 		txGetHash,
-		txGetInputs,
-		txGetOutputs,
-		txGetReferences,
-		txGetType,
-		txGetUnspentCoins,
 		txGetWitnesses,
 		witnessGetVerificationScript,
 	}
diff --git a/pkg/core/mempool/mem_pool.go b/pkg/core/mempool/mem_pool.go
index bd566936a..748c8b811 100644
--- a/pkg/core/mempool/mem_pool.go
+++ b/pkg/core/mempool/mem_pool.go
@@ -12,8 +12,8 @@ import (
 
 var (
 	// ErrConflict is returned when transaction being added is incompatible
-	// with the contents of the memory pool (using the same inputs as some
-	// other transaction in the pool)
+	// with the contents of the memory pool (Sender doesn't have enough GAS
+	// to pay for all transactions in the pool).
 	ErrConflict = errors.New("conflicts with the memory pool")
 	// ErrDup is returned when transaction being added is already present
 	// in the memory pool.
@@ -33,12 +33,6 @@ type item struct {
 // items is a slice of item.
 type items []*item
 
-// TxWithFee combines transaction and its precalculated network fee.
-type TxWithFee struct {
-	Tx  *transaction.Transaction
-	Fee util.Fixed8
-}
-
 // utilityBalanceAndFees stores sender's balance and overall fees of
 // sender's transactions which are currently in mempool
 type utilityBalanceAndFees struct {
@@ -51,8 +45,6 @@ type Pool struct {
 	lock         sync.RWMutex
 	verifiedMap  map[util.Uint256]*item
 	verifiedTxes items
-	inputs       []*transaction.Input
-	claims       []*transaction.Input
 	fees         map[util.Uint160]utilityBalanceAndFees
 
 	capacity int
@@ -79,20 +71,6 @@ func (p *item) CompareTo(otherP *item) int {
 		return -1
 	}
 
-	if p.isLowPrio && otherP.isLowPrio {
-		thisIsClaimTx := p.txn.Type == transaction.ClaimType
-		otherIsClaimTx := otherP.txn.Type == transaction.ClaimType
-
-		if thisIsClaimTx != otherIsClaimTx {
-			// This is a claim Tx and other isn't.
-			if thisIsClaimTx {
-				return 1
-			}
-			// The other is claim Tx and this isn't.
-			return -1
-		}
-	}
-
 	// Fees sorted ascending.
 	if ret := p.txn.FeePerByte().CompareTo(otherP.txn.FeePerByte()); ret != 0 {
 		return ret
@@ -135,35 +113,6 @@ func (mp *Pool) containsKey(hash util.Uint256) bool {
 	return false
 }
 
-// findIndexForInput finds an index in a sorted Input pointers slice that is
-// appropriate to place this input into (or which contains an identical Input).
-func findIndexForInput(slice []*transaction.Input, input *transaction.Input) int {
-	return sort.Search(len(slice), func(n int) bool {
-		return input.Cmp(slice[n]) <= 0
-	})
-}
-
-// pushInputToSortedSlice pushes new Input into the given slice.
-func pushInputToSortedSlice(slice *[]*transaction.Input, input *transaction.Input) {
-	n := findIndexForInput(*slice, input)
-	*slice = append(*slice, input)
-	if n != len(*slice)-1 {
-		copy((*slice)[n+1:], (*slice)[n:])
-		(*slice)[n] = input
-	}
-}
-
-// dropInputFromSortedSlice removes given input from the given slice.
-func dropInputFromSortedSlice(slice *[]*transaction.Input, input *transaction.Input) {
-	n := findIndexForInput(*slice, input)
-	if n == len(*slice) || *input != *(*slice)[n] {
-		// Not present.
-		return
-	}
-	copy((*slice)[n:], (*slice)[n+1:])
-	*slice = (*slice)[:len(*slice)-1]
-}
-
 // tryAddSendersFee tries to add system fee and network fee to the total sender`s fee in mempool
 // and returns false if sender has not enough GAS to pay
 func (mp *Pool) tryAddSendersFee(tx *transaction.Transaction, feer Feer) bool {
@@ -244,18 +193,6 @@ func (mp *Pool) Add(t *transaction.Transaction, fee Feer) error {
 	}
 	mp.addSendersFee(pItem.txn)
 
-	// For lots of inputs it might be easier to push them all and sort
-	// afterwards, but that requires benchmarking.
-	for i := range t.Inputs {
-		pushInputToSortedSlice(&mp.inputs, &t.Inputs[i])
-	}
-	if t.Type == transaction.ClaimType {
-		claim := t.Data.(*transaction.ClaimTX)
-		for i := range claim.Claims {
-			pushInputToSortedSlice(&mp.claims, &claim.Claims[i])
-		}
-	}
-
 	updateMempoolMetrics(len(mp.verifiedTxes))
 	mp.lock.Unlock()
 	return nil
@@ -281,15 +218,6 @@ func (mp *Pool) Remove(hash util.Uint256) {
 		senderFee := mp.fees[it.txn.Sender]
 		senderFee.feeSum -= it.txn.SystemFee + it.txn.NetworkFee
 		mp.fees[it.txn.Sender] = senderFee
-		for i := range it.txn.Inputs {
-			dropInputFromSortedSlice(&mp.inputs, &it.txn.Inputs[i])
-		}
-		if it.txn.Type == transaction.ClaimType {
-			claim := it.txn.Data.(*transaction.ClaimTX)
-			for i := range claim.Claims {
-				dropInputFromSortedSlice(&mp.claims, &claim.Claims[i])
-			}
-		}
 	}
 	updateMempoolMetrics(len(mp.verifiedTxes))
 	mp.lock.Unlock()
@@ -303,34 +231,15 @@ func (mp *Pool) RemoveStale(isOK func(*transaction.Transaction) bool, feer Feer)
 	// We can reuse already allocated slice
 	// because items are iterated one-by-one in increasing order.
 	newVerifiedTxes := mp.verifiedTxes[:0]
-	newInputs := mp.inputs[:0]
-	newClaims := mp.claims[:0]
 	mp.fees = make(map[util.Uint160]utilityBalanceAndFees) // it'd be nice to reuse existing map, but we can't easily clear it
 	for _, itm := range mp.verifiedTxes {
 		if isOK(itm.txn) && mp.tryAddSendersFee(itm.txn, feer) {
 			newVerifiedTxes = append(newVerifiedTxes, itm)
-			for i := range itm.txn.Inputs {
-				newInputs = append(newInputs, &itm.txn.Inputs[i])
-			}
-			if itm.txn.Type == transaction.ClaimType {
-				claim := itm.txn.Data.(*transaction.ClaimTX)
-				for i := range claim.Claims {
-					newClaims = append(newClaims, &claim.Claims[i])
-				}
-			}
 		} else {
 			delete(mp.verifiedMap, itm.txn.Hash())
 		}
 	}
-	sort.Slice(newInputs, func(i, j int) bool {
-		return newInputs[i].Cmp(newInputs[j]) < 0
-	})
-	sort.Slice(newClaims, func(i, j int) bool {
-		return newClaims[i].Cmp(newClaims[j]) < 0
-	})
 	mp.verifiedTxes = newVerifiedTxes
-	mp.inputs = newInputs
-	mp.claims = newClaims
 	mp.lock.Unlock()
 }
 
@@ -345,74 +254,39 @@ func NewMemPool(capacity int) Pool {
 }
 
 // TryGetValue returns a transaction and its fee if it exists in the memory pool.
-func (mp *Pool) TryGetValue(hash util.Uint256) (*transaction.Transaction, util.Fixed8, bool) {
+func (mp *Pool) TryGetValue(hash util.Uint256) (*transaction.Transaction, bool) {
 	mp.lock.RLock()
 	defer mp.lock.RUnlock()
 	if pItem, ok := mp.verifiedMap[hash]; ok {
-		return pItem.txn, pItem.txn.NetworkFee, ok
+		return pItem.txn, ok
 	}
 
-	return nil, 0, false
+	return nil, false
 }
 
-// GetVerifiedTransactions returns a slice of Input from all the transactions in the memory pool
-// whose hash is not included in excludedHashes.
-func (mp *Pool) GetVerifiedTransactions() []TxWithFee {
+// GetVerifiedTransactions returns a slice of transactions with their fees.
+func (mp *Pool) GetVerifiedTransactions() []*transaction.Transaction {
 	mp.lock.RLock()
 	defer mp.lock.RUnlock()
 
-	var t = make([]TxWithFee, len(mp.verifiedTxes))
+	var t = make([]*transaction.Transaction, len(mp.verifiedTxes))
 
 	for i := range mp.verifiedTxes {
-		t[i].Tx = mp.verifiedTxes[i].txn
-		t[i].Fee = mp.verifiedTxes[i].txn.NetworkFee
+		t[i] = mp.verifiedTxes[i].txn
 	}
 
 	return t
 }
 
-// areInputsInPool tries to find inputs in a given sorted pool and returns true
-// if it finds any.
-func areInputsInPool(inputs []transaction.Input, pool []*transaction.Input) bool {
-	for i := range inputs {
-		n := findIndexForInput(pool, &inputs[i])
-		if n < len(pool) && *pool[n] == inputs[i] {
-			return true
-		}
-	}
-	return false
-}
-
 // checkTxConflicts is an internal unprotected version of Verify.
 func (mp *Pool) checkTxConflicts(tx *transaction.Transaction, fee Feer) bool {
-	if areInputsInPool(tx.Inputs, mp.inputs) {
-		return false
-	}
-	if !mp.checkBalanceAndUpdate(tx, fee) {
-		return false
-	}
-	switch tx.Type {
-	case transaction.ClaimType:
-		claim := tx.Data.(*transaction.ClaimTX)
-		if areInputsInPool(claim.Claims, mp.claims) {
-			return false
-		}
-	case transaction.IssueType:
-		// It's a hack, because technically we could check for
-		// available asset amount, but these transactions are so rare
-		// that no one really cares about this restriction.
-		for i := range mp.verifiedTxes {
-			if mp.verifiedTxes[i].txn.Type == transaction.IssueType {
-				return false
-			}
-		}
-	}
-	return true
+	return mp.checkBalanceAndUpdate(tx, fee)
 }
 
-// Verify verifies if the inputs of a transaction tx are already used in any other transaction in the memory pool.
-// If yes, the transaction tx is not a valid transaction and the function return false.
-// If no, the transaction tx is a valid transaction and the function return true.
+// Verify checks if a Sender of tx is able to pay for it (and all the other
+// transactions in the pool). If yes, the transaction tx is a valid
+// transaction and the function returns true. If no, the transaction tx is
+// considered to be invalid the function returns false.
 func (mp *Pool) Verify(tx *transaction.Transaction, feer Feer) bool {
 	mp.lock.RLock()
 	defer mp.lock.RUnlock()
diff --git a/pkg/core/mempool/mem_pool_test.go b/pkg/core/mempool/mem_pool_test.go
index c4dbfec75..969652c11 100644
--- a/pkg/core/mempool/mem_pool_test.go
+++ b/pkg/core/mempool/mem_pool_test.go
@@ -5,8 +5,8 @@ import (
 	"testing"
 
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
-	"github.com/nspcc-dev/neo-go/pkg/internal/random"
 	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -30,18 +30,18 @@ func (fs *FeerStub) GetUtilityTokenBalance(uint160 util.Uint160) util.Fixed8 {
 
 func testMemPoolAddRemoveWithFeer(t *testing.T, fs Feer) {
 	mp := NewMemPool(10)
-	tx := transaction.NewContractTX()
+	tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 	tx.Nonce = 0
-	_, _, ok := mp.TryGetValue(tx.Hash())
+	_, ok := mp.TryGetValue(tx.Hash())
 	require.Equal(t, false, ok)
 	require.NoError(t, mp.Add(tx, fs))
 	// Re-adding should fail.
 	require.Error(t, mp.Add(tx, fs))
-	tx2, _, ok := mp.TryGetValue(tx.Hash())
+	tx2, ok := mp.TryGetValue(tx.Hash())
 	require.Equal(t, true, ok)
 	require.Equal(t, tx, tx2)
 	mp.Remove(tx.Hash())
-	_, _, ok = mp.TryGetValue(tx.Hash())
+	_, ok = mp.TryGetValue(tx.Hash())
 	require.Equal(t, false, ok)
 	// Make sure nothing left in the mempool after removal.
 	assert.Equal(t, 0, len(mp.verifiedMap))
@@ -55,162 +55,13 @@ func TestMemPoolAddRemove(t *testing.T) {
 	t.Run("high priority", func(t *testing.T) { testMemPoolAddRemoveWithFeer(t, fs) })
 }
 
-func TestMemPoolAddRemoveWithInputsAndClaims(t *testing.T) {
-	mp := NewMemPool(50)
-	hash1, err := util.Uint256DecodeStringBE("a83ba6ede918a501558d3170a124324aedc89909e64c4ff2c6f863094f980b25")
-	require.NoError(t, err)
-	hash2, err := util.Uint256DecodeStringBE("629397158f852e838077bb2715b13a2e29b0a51c2157e5466321b70ed7904ce9")
-	require.NoError(t, err)
-	mpLessInputs := func(i, j int) bool {
-		return mp.inputs[i].Cmp(mp.inputs[j]) < 0
-	}
-	mpLessClaims := func(i, j int) bool {
-		return mp.claims[i].Cmp(mp.claims[j]) < 0
-	}
-	txm1 := transaction.NewContractTX()
-	txm1.Nonce = 1
-	txc1, claim1 := newClaimTX()
-	for i := 0; i < 5; i++ {
-		txm1.Inputs = append(txm1.Inputs, transaction.Input{PrevHash: hash1, PrevIndex: uint16(100 - i)})
-		claim1.Claims = append(claim1.Claims, transaction.Input{PrevHash: hash1, PrevIndex: uint16(100 - i)})
-	}
-	require.NoError(t, mp.Add(txm1, &FeerStub{}))
-	require.NoError(t, mp.Add(txc1, &FeerStub{}))
-	// Look inside.
-	assert.Equal(t, len(txm1.Inputs), len(mp.inputs))
-	assert.True(t, sort.SliceIsSorted(mp.inputs, mpLessInputs))
-	assert.Equal(t, len(claim1.Claims), len(mp.claims))
-	assert.True(t, sort.SliceIsSorted(mp.claims, mpLessClaims))
-
-	txm2 := transaction.NewContractTX()
-	txm2.Nonce = 1
-	txc2, claim2 := newClaimTX()
-	for i := 0; i < 10; i++ {
-		txm2.Inputs = append(txm2.Inputs, transaction.Input{PrevHash: hash2, PrevIndex: uint16(i)})
-		claim2.Claims = append(claim2.Claims, transaction.Input{PrevHash: hash2, PrevIndex: uint16(i)})
-	}
-	require.NoError(t, mp.Add(txm2, &FeerStub{}))
-	require.NoError(t, mp.Add(txc2, &FeerStub{}))
-	assert.Equal(t, len(txm1.Inputs)+len(txm2.Inputs), len(mp.inputs))
-	assert.True(t, sort.SliceIsSorted(mp.inputs, mpLessInputs))
-	assert.Equal(t, len(claim1.Claims)+len(claim2.Claims), len(mp.claims))
-	assert.True(t, sort.SliceIsSorted(mp.claims, mpLessClaims))
-
-	mp.Remove(txm1.Hash())
-	mp.Remove(txc2.Hash())
-	assert.Equal(t, len(txm2.Inputs), len(mp.inputs))
-	assert.True(t, sort.SliceIsSorted(mp.inputs, mpLessInputs))
-	assert.Equal(t, len(claim1.Claims), len(mp.claims))
-	assert.True(t, sort.SliceIsSorted(mp.claims, mpLessClaims))
-
-	require.NoError(t, mp.Add(txm1, &FeerStub{}))
-	require.NoError(t, mp.Add(txc2, &FeerStub{}))
-	assert.Equal(t, len(txm1.Inputs)+len(txm2.Inputs), len(mp.inputs))
-	assert.True(t, sort.SliceIsSorted(mp.inputs, mpLessInputs))
-	assert.Equal(t, len(claim1.Claims)+len(claim2.Claims), len(mp.claims))
-	assert.True(t, sort.SliceIsSorted(mp.claims, mpLessClaims))
-
-	mp.RemoveStale(func(t *transaction.Transaction) bool {
-		if t.Hash() == txc1.Hash() || t.Hash() == txm2.Hash() {
-			return false
-		}
-		return true
-	}, &FeerStub{})
-	assert.Equal(t, len(txm1.Inputs), len(mp.inputs))
-	assert.True(t, sort.SliceIsSorted(mp.inputs, mpLessInputs))
-	assert.Equal(t, len(claim2.Claims), len(mp.claims))
-	assert.True(t, sort.SliceIsSorted(mp.claims, mpLessClaims))
-}
-
-func TestMemPoolVerifyInputs(t *testing.T) {
-	mp := NewMemPool(10)
-	tx := transaction.NewContractTX()
-	tx.Nonce = 1
-	inhash1 := random.Uint256()
-	tx.Inputs = append(tx.Inputs, transaction.Input{PrevHash: inhash1, PrevIndex: 0})
-	require.Equal(t, true, mp.Verify(tx, &FeerStub{}))
-	require.NoError(t, mp.Add(tx, &FeerStub{}))
-
-	tx2 := transaction.NewContractTX()
-	tx2.Nonce = 2
-	inhash2 := random.Uint256()
-	tx2.Inputs = append(tx2.Inputs, transaction.Input{PrevHash: inhash2, PrevIndex: 0})
-	require.Equal(t, true, mp.Verify(tx2, &FeerStub{}))
-	require.NoError(t, mp.Add(tx2, &FeerStub{}))
-
-	tx3 := transaction.NewContractTX()
-	tx3.Nonce = 3
-	// Different index number, but the same PrevHash as in tx1.
-	tx3.Inputs = append(tx3.Inputs, transaction.Input{PrevHash: inhash1, PrevIndex: 1})
-	require.Equal(t, true, mp.Verify(tx3, &FeerStub{}))
-	// The same input as in tx2.
-	tx3.Inputs = append(tx3.Inputs, transaction.Input{PrevHash: inhash2, PrevIndex: 0})
-	require.Equal(t, false, mp.Verify(tx3, &FeerStub{}))
-	require.Error(t, mp.Add(tx3, &FeerStub{}))
-}
-
-func TestMemPoolVerifyClaims(t *testing.T) {
-	mp := NewMemPool(50)
-	tx1, claim1 := newClaimTX()
-	hash1, err := util.Uint256DecodeStringBE("a83ba6ede918a501558d3170a124324aedc89909e64c4ff2c6f863094f980b25")
-	require.NoError(t, err)
-	hash2, err := util.Uint256DecodeStringBE("629397158f852e838077bb2715b13a2e29b0a51c2157e5466321b70ed7904ce9")
-	require.NoError(t, err)
-	for i := 0; i < 10; i++ {
-		claim1.Claims = append(claim1.Claims, transaction.Input{PrevHash: hash1, PrevIndex: uint16(i)})
-		claim1.Claims = append(claim1.Claims, transaction.Input{PrevHash: hash2, PrevIndex: uint16(i)})
-	}
-	require.Equal(t, true, mp.Verify(tx1, &FeerStub{}))
-	require.NoError(t, mp.Add(tx1, &FeerStub{}))
-
-	tx2, claim2 := newClaimTX()
-	for i := 0; i < 10; i++ {
-		claim2.Claims = append(claim2.Claims, transaction.Input{PrevHash: hash2, PrevIndex: uint16(i + 10)})
-	}
-	require.Equal(t, true, mp.Verify(tx2, &FeerStub{}))
-	require.NoError(t, mp.Add(tx2, &FeerStub{}))
-
-	tx3, claim3 := newClaimTX()
-	claim3.Claims = append(claim3.Claims, transaction.Input{PrevHash: hash1, PrevIndex: 0})
-	require.Equal(t, false, mp.Verify(tx3, &FeerStub{}))
-	require.Error(t, mp.Add(tx3, &FeerStub{}))
-}
-
-func TestMemPoolVerifyIssue(t *testing.T) {
-	mp := NewMemPool(50)
-	tx1 := newIssueTX()
-	require.Equal(t, true, mp.Verify(tx1, &FeerStub{}))
-	require.NoError(t, mp.Add(tx1, &FeerStub{}))
-
-	tx2 := newIssueTX()
-	require.Equal(t, false, mp.Verify(tx2, &FeerStub{}))
-	require.Error(t, mp.Add(tx2, &FeerStub{}))
-}
-
-func newIssueTX() *transaction.Transaction {
-	tx := transaction.NewIssueTX()
-	tx.Outputs = []transaction.Output{
-		{
-			AssetID:    random.Uint256(),
-			Amount:     util.Fixed8FromInt64(42),
-			ScriptHash: random.Uint160(),
-		},
-	}
-	return tx
-}
-
-func newClaimTX() (*transaction.Transaction, *transaction.ClaimTX) {
-	cl := &transaction.ClaimTX{}
-	return transaction.NewClaimTX(cl), cl
-}
-
 func TestOverCapacity(t *testing.T) {
 	var fs = &FeerStub{lowPriority: true}
 	const mempoolSize = 10
 	mp := NewMemPool(mempoolSize)
 
 	for i := 0; i < mempoolSize; i++ {
-		tx := transaction.NewContractTX()
+		tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 		tx.Nonce = uint32(i)
 		require.NoError(t, mp.Add(tx, fs))
 	}
@@ -218,19 +69,9 @@ func TestOverCapacity(t *testing.T) {
 	require.Equal(t, mempoolSize, mp.Count())
 	require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
 
-	// Claim TX has more priority than ordinary lowprio, so it should easily
-	// fit into the pool.
-	claim := &transaction.Transaction{
-		Type: transaction.ClaimType,
-		Data: &transaction.ClaimTX{},
-	}
-	require.NoError(t, mp.Add(claim, fs))
-	require.Equal(t, mempoolSize, mp.Count())
-	require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
-
 	// Fees are also prioritized.
-	for i := 0; i < mempoolSize-1; i++ {
-		tx := transaction.NewContractTX()
+	for i := 0; i < mempoolSize; i++ {
+		tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 		tx.Attributes = append(tx.Attributes, transaction.Attribute{
 			Usage: transaction.Hash1,
 			Data:  util.Uint256{1, 2, 3, 4}.BytesBE(),
@@ -244,23 +85,20 @@ func TestOverCapacity(t *testing.T) {
 		require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
 	}
 	// Less prioritized txes are not allowed anymore.
-	tx := transaction.NewContractTX()
+	tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 	tx.Attributes = append(tx.Attributes, transaction.Attribute{
 		Usage: transaction.Hash1,
 		Data:  util.Uint256{1, 2, 3, 4}.BytesBE(),
 	})
-	tx.NetworkFee = util.Fixed8FromFloat(0.00001)
+	tx.NetworkFee = util.Fixed8FromFloat(0.000001)
 	tx.Nonce = txcnt
 	txcnt++
 	require.Error(t, mp.Add(tx, fs))
 	require.Equal(t, mempoolSize, mp.Count())
 	require.Equal(t, true, sort.IsSorted(sort.Reverse(mp.verifiedTxes)))
 
-	// But claim tx should still be there.
-	require.True(t, mp.ContainsKey(claim.Hash()))
-
 	// Low net fee, but higher per-byte fee is still a better combination.
-	tx = transaction.NewContractTX()
+	tx = transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 	tx.Nonce = txcnt
 	tx.NetworkFee = util.Fixed8FromFloat(0.00007)
 	txcnt++
@@ -273,7 +111,7 @@ func TestOverCapacity(t *testing.T) {
 	// High priority always wins over low priority.
 	fs.lowPriority = false
 	for i := 0; i < mempoolSize; i++ {
-		tx := transaction.NewContractTX()
+		tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 		tx.Nonce = txcnt
 		txcnt++
 		require.NoError(t, mp.Add(tx, fs))
@@ -282,7 +120,7 @@ func TestOverCapacity(t *testing.T) {
 	}
 	// Good luck with low priority now.
 	fs.lowPriority = true
-	tx = transaction.NewContractTX()
+	tx = transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 	tx.Nonce = txcnt
 	require.Error(t, mp.Add(tx, fs))
 	require.Equal(t, mempoolSize, mp.Count())
@@ -296,7 +134,7 @@ func TestGetVerified(t *testing.T) {
 
 	txes := make([]*transaction.Transaction, 0, mempoolSize)
 	for i := 0; i < mempoolSize; i++ {
-		tx := transaction.NewContractTX()
+		tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 		tx.Nonce = uint32(i)
 		txes = append(txes, tx)
 		require.NoError(t, mp.Add(tx, fs))
@@ -304,9 +142,7 @@ func TestGetVerified(t *testing.T) {
 	require.Equal(t, mempoolSize, mp.Count())
 	verTxes := mp.GetVerifiedTransactions()
 	require.Equal(t, mempoolSize, len(verTxes))
-	for _, txf := range verTxes {
-		require.Contains(t, txes, txf.Tx)
-	}
+	require.ElementsMatch(t, txes, verTxes)
 	for _, tx := range txes {
 		mp.Remove(tx.Hash())
 	}
@@ -322,7 +158,7 @@ func TestRemoveStale(t *testing.T) {
 	txes1 := make([]*transaction.Transaction, 0, mempoolSize/2)
 	txes2 := make([]*transaction.Transaction, 0, mempoolSize/2)
 	for i := 0; i < mempoolSize; i++ {
-		tx := transaction.NewContractTX()
+		tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 		tx.Nonce = uint32(i)
 		if i%2 == 0 {
 			txes1 = append(txes1, tx)
@@ -343,15 +179,15 @@ func TestRemoveStale(t *testing.T) {
 	require.Equal(t, mempoolSize/2, mp.Count())
 	verTxes := mp.GetVerifiedTransactions()
 	for _, txf := range verTxes {
-		require.NotContains(t, txes1, txf.Tx)
-		require.Contains(t, txes2, txf.Tx)
+		require.NotContains(t, txes1, txf)
+		require.Contains(t, txes2, txf)
 	}
 }
 
 func TestMemPoolFees(t *testing.T) {
 	mp := NewMemPool(10)
 	sender0 := util.Uint160{1, 2, 3}
-	tx0 := transaction.NewContractTX()
+	tx0 := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 	tx0.NetworkFee = util.Fixed8FromInt64(11000)
 	tx0.Sender = sender0
 	// insufficient funds to add transaction, but balance should be stored
@@ -364,7 +200,7 @@ func TestMemPoolFees(t *testing.T) {
 	}, mp.fees[sender0])
 
 	// no problems with adding another transaction with lower fee
-	tx1 := transaction.NewContractTX()
+	tx1 := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 	tx1.NetworkFee = util.Fixed8FromInt64(7000)
 	tx1.Sender = sender0
 	require.NoError(t, mp.Add(tx1, &FeerStub{}))
@@ -375,7 +211,7 @@ func TestMemPoolFees(t *testing.T) {
 	}, mp.fees[sender0])
 
 	// balance shouldn't change after adding one more transaction
-	tx2 := transaction.NewContractTX()
+	tx2 := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 	tx2.NetworkFee = util.Fixed8FromFloat(3000)
 	tx2.Sender = sender0
 	require.NoError(t, mp.Add(tx2, &FeerStub{}))
@@ -387,7 +223,7 @@ func TestMemPoolFees(t *testing.T) {
 	}, mp.fees[sender0])
 
 	// can't add more transactions as we don't have enough GAS
-	tx3 := transaction.NewContractTX()
+	tx3 := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 	tx3.NetworkFee = util.Fixed8FromFloat(0.5)
 	tx3.Sender = sender0
 	require.Equal(t, false, mp.Verify(tx3, &FeerStub{}))
diff --git a/pkg/core/native/native_gas.go b/pkg/core/native/native_gas.go
index 8706f1ea1..109deceb3 100644
--- a/pkg/core/native/native_gas.go
+++ b/pkg/core/native/native_gas.go
@@ -10,9 +10,7 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
-	"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
 	"github.com/nspcc-dev/neo-go/pkg/util"
-	"github.com/nspcc-dev/neo-go/pkg/vm"
 )
 
 // GAS represents GAS native contract.
@@ -40,11 +38,6 @@ func NewGAS() *GAS {
 
 	g.nep5TokenNative = *nep5
 
-	desc := newDescriptor("getSysFeeAmount", smartcontract.IntegerType,
-		manifest.NewParameter("index", smartcontract.IntegerType))
-	md := newMethodAndPrice(g.getSysFeeAmount, 1, smartcontract.NoneFlag)
-	g.AddMethod(md, desc, true)
-
 	return g
 }
 
@@ -98,16 +91,6 @@ func (g *GAS) OnPersist(ic *interop.Context) error {
 	return nil
 }
 
-func (g *GAS) getSysFeeAmount(ic *interop.Context, args []vm.StackItem) vm.StackItem {
-	index := toBigInt(args[0])
-	h := ic.Chain.GetHeaderHash(int(index.Int64()))
-	_, sf, err := ic.DAO.GetBlock(h)
-	if err != nil {
-		panic(err)
-	}
-	return vm.NewBigIntegerItem(big.NewInt(int64(sf)))
-}
-
 func getStandbyValidatorsHash(ic *interop.Context) (util.Uint160, []*keys.PublicKey, error) {
 	vs, err := ic.Chain.GetStandByValidators()
 	if err != nil {
diff --git a/pkg/core/native/native_neo.go b/pkg/core/native/native_neo.go
index aca59e0fb..0c9506e60 100644
--- a/pkg/core/native/native_neo.go
+++ b/pkg/core/native/native_neo.go
@@ -188,12 +188,9 @@ func (n *NEO) distributeGas(ic *interop.Context, h util.Uint160, acc *state.NEOB
 	if ic.Block == nil || ic.Block.Index == 0 {
 		return nil
 	}
-	sys, net, err := ic.Chain.CalculateClaimable(util.Fixed8(acc.Balance.Int64()), acc.BalanceHeight, ic.Block.Index)
-	if err != nil {
-		return err
-	}
+	gen := ic.Chain.CalculateClaimable(acc.Balance.Int64(), acc.BalanceHeight, ic.Block.Index)
 	acc.BalanceHeight = ic.Block.Index
-	n.GAS.mint(ic, h, big.NewInt(int64(sys+net)))
+	n.GAS.mint(ic, h, big.NewInt(int64(gen)))
 	return nil
 }
 
@@ -206,11 +203,8 @@ func (n *NEO) unclaimedGas(ic *interop.Context, args []vm.StackItem) vm.StackIte
 	}
 	tr := bs.Trackers[n.Hash]
 
-	sys, net, err := ic.Chain.CalculateClaimable(util.Fixed8(tr.Balance), tr.LastUpdatedBlock, end)
-	if err != nil {
-		panic(err)
-	}
-	return vm.NewBigIntegerItem(big.NewInt(int64(sys.Add(net))))
+	gen := ic.Chain.CalculateClaimable(tr.Balance, tr.LastUpdatedBlock, end)
+	return vm.NewBigIntegerItem(big.NewInt(int64(gen)))
 }
 
 func (n *NEO) registerValidator(ic *interop.Context, args []vm.StackItem) vm.StackItem {
diff --git a/pkg/core/native/native_nep5.go b/pkg/core/native/native_nep5.go
index 7ea25e20f..eb8c0ef23 100644
--- a/pkg/core/native/native_nep5.go
+++ b/pkg/core/native/native_nep5.go
@@ -169,6 +169,8 @@ func (c *nep5TokenNative) transfer(ic *interop.Context, from, to util.Uint160, a
 	inc := amount
 	if isEmpty {
 		inc = big.NewInt(0)
+	} else {
+		inc = new(big.Int).Neg(inc)
 	}
 	if err := c.incBalance(ic, from, siFrom, inc); err != nil {
 		return err
@@ -206,11 +208,17 @@ func (c *nep5TokenNative) balanceOf(ic *interop.Context, args []vm.StackItem) vm
 }
 
 func (c *nep5TokenNative) mint(ic *interop.Context, h util.Uint160, amount *big.Int) {
+	if amount.Sign() == 0 {
+		return
+	}
 	c.addTokens(ic, h, amount)
 	c.emitTransfer(ic, nil, &h, amount)
 }
 
 func (c *nep5TokenNative) burn(ic *interop.Context, h util.Uint160, amount *big.Int) {
+	if amount.Sign() == 0 {
+		return
+	}
 	amount = new(big.Int).Neg(amount)
 	c.addTokens(ic, h, amount)
 	c.emitTransfer(ic, &h, nil, amount)
diff --git a/pkg/core/native_contract_test.go b/pkg/core/native_contract_test.go
index fd2d10024..a95e8cd0b 100644
--- a/pkg/core/native_contract_test.go
+++ b/pkg/core/native_contract_test.go
@@ -92,7 +92,7 @@ func TestNativeContract_Invoke(t *testing.T) {
 	w := io.NewBufBinWriter()
 	emit.AppCallWithOperationAndArgs(w.BinWriter, tn.Metadata().Hash, "sum", int64(14), int64(28))
 	script := w.Bytes()
-	tx := transaction.NewInvocationTX(script, 0)
+	tx := transaction.New(script, 0)
 	validUntil := chain.blockHeight + 1
 	tx.ValidUntilBlock = validUntil
 	require.NoError(t, addSender(tx))
diff --git a/pkg/core/spent_coin.go b/pkg/core/spent_coin.go
deleted file mode 100644
index 9d42cb8af..000000000
--- a/pkg/core/spent_coin.go
+++ /dev/null
@@ -1,10 +0,0 @@
-package core
-
-import "github.com/nspcc-dev/neo-go/pkg/core/transaction"
-
-// spentCoin represents the state of a single spent coin output.
-type spentCoin struct {
-	Output      *transaction.Output
-	StartHeight uint32
-	EndHeight   uint32
-}
diff --git a/pkg/core/state/account.go b/pkg/core/state/account.go
index 4e65ec27e..a0b82abd0 100644
--- a/pkg/core/state/account.go
+++ b/pkg/core/state/account.go
@@ -13,16 +13,6 @@ type UnspentBalance struct {
 	Value util.Fixed8  `json:"value"`
 }
 
-// UnclaimedBalance represents transaction output which was spent and
-// can be claimed.
-type UnclaimedBalance struct {
-	Tx    util.Uint256
-	Index uint16
-	Start uint32
-	End   uint32
-	Value util.Fixed8
-}
-
 // UnspentBalances is a slice of UnspentBalance (mostly needed to sort them).
 type UnspentBalances []UnspentBalance
 
@@ -32,7 +22,6 @@ type Account struct {
 	ScriptHash util.Uint160
 	IsFrozen   bool
 	Balances   map[util.Uint256][]UnspentBalance
-	Unclaimed  UnclaimedBalances
 }
 
 // NewAccount returns a new Account object.
@@ -42,7 +31,6 @@ func NewAccount(scriptHash util.Uint160) *Account {
 		ScriptHash: scriptHash,
 		IsFrozen:   false,
 		Balances:   make(map[util.Uint256][]UnspentBalance),
-		Unclaimed:  UnclaimedBalances{Raw: []byte{}},
 	}
 }
 
@@ -64,10 +52,6 @@ func (s *Account) DecodeBinary(br *io.BinReader) {
 		}
 		s.Balances[key] = ubs
 	}
-
-	lenBalances = br.ReadVarUint()
-	s.Unclaimed.Raw = make([]byte, lenBalances*UnclaimedBalanceSize)
-	br.ReadBytes(s.Unclaimed.Raw)
 }
 
 // EncodeBinary encodes Account to the given BinWriter.
@@ -84,9 +68,6 @@ func (s *Account) EncodeBinary(bw *io.BinWriter) {
 			v[i].EncodeBinary(bw)
 		}
 	}
-
-	bw.WriteVarUint(uint64(s.Unclaimed.Size()))
-	bw.WriteBytes(s.Unclaimed.Raw)
 }
 
 // DecodeBinary implements io.Serializable interface.
@@ -103,24 +84,6 @@ func (u *UnspentBalance) EncodeBinary(w *io.BinWriter) {
 	u.Value.EncodeBinary(w)
 }
 
-// DecodeBinary implements io.Serializable interface.
-func (u *UnclaimedBalance) DecodeBinary(r *io.BinReader) {
-	u.Tx.DecodeBinary(r)
-	u.Index = r.ReadU16LE()
-	u.Start = r.ReadU32LE()
-	u.End = r.ReadU32LE()
-	u.Value.DecodeBinary(r)
-}
-
-// EncodeBinary implements io.Serializable interface.
-func (u *UnclaimedBalance) EncodeBinary(w *io.BinWriter) {
-	u.Tx.EncodeBinary(w)
-	w.WriteU16LE(u.Index)
-	w.WriteU32LE(u.Start)
-	w.WriteU32LE(u.End)
-	u.Value.EncodeBinary(w)
-}
-
 // GetBalanceValues sums all unspent outputs and returns a map of asset IDs to
 // overall balances.
 func (s *Account) GetBalanceValues() map[util.Uint256]util.Fixed8 {
diff --git a/pkg/core/state/account_test.go b/pkg/core/state/account_test.go
index fab1049d7..32a7a6754 100644
--- a/pkg/core/state/account_test.go
+++ b/pkg/core/state/account_test.go
@@ -30,7 +30,6 @@ func TestDecodeEncodeAccountState(t *testing.T) {
 		ScriptHash: random.Uint160(),
 		IsFrozen:   true,
 		Balances:   balances,
-		Unclaimed:  UnclaimedBalances{Raw: []byte{}},
 	}
 
 	testserdes.EncodeDecodeBinary(t, a, new(Account))
diff --git a/pkg/core/state/asset.go b/pkg/core/state/asset.go
deleted file mode 100644
index d59deba68..000000000
--- a/pkg/core/state/asset.go
+++ /dev/null
@@ -1,78 +0,0 @@
-package state
-
-import (
-	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
-	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
-	"github.com/nspcc-dev/neo-go/pkg/io"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-)
-
-const feeMode = 0x0
-
-// Asset represents the state of an NEO registered Asset.
-type Asset struct {
-	ID         util.Uint256
-	AssetType  transaction.AssetType
-	Name       string
-	Amount     util.Fixed8
-	Available  util.Fixed8
-	Precision  uint8
-	FeeMode    uint8
-	FeeAddress util.Uint160
-	Owner      keys.PublicKey
-	Admin      util.Uint160
-	Issuer     util.Uint160
-	Expiration uint32
-	IsFrozen   bool
-}
-
-// DecodeBinary implements Serializable interface.
-func (a *Asset) DecodeBinary(br *io.BinReader) {
-	br.ReadBytes(a.ID[:])
-	a.AssetType = transaction.AssetType(br.ReadB())
-
-	a.Name = br.ReadString()
-
-	a.Amount.DecodeBinary(br)
-	a.Available.DecodeBinary(br)
-	a.Precision = uint8(br.ReadB())
-	a.FeeMode = uint8(br.ReadB())
-	a.FeeAddress.DecodeBinary(br)
-
-	a.Owner.DecodeBinary(br)
-	a.Admin.DecodeBinary(br)
-	a.Issuer.DecodeBinary(br)
-	a.Expiration = br.ReadU32LE()
-	a.IsFrozen = br.ReadBool()
-}
-
-// EncodeBinary implements Serializable interface.
-func (a *Asset) EncodeBinary(bw *io.BinWriter) {
-	bw.WriteBytes(a.ID[:])
-	bw.WriteB(byte(a.AssetType))
-	bw.WriteString(a.Name)
-	a.Amount.EncodeBinary(bw)
-	a.Available.EncodeBinary(bw)
-	bw.WriteB(byte(a.Precision))
-	bw.WriteB(byte(a.FeeMode))
-	a.FeeAddress.EncodeBinary(bw)
-
-	a.Owner.EncodeBinary(bw)
-
-	a.Admin.EncodeBinary(bw)
-	a.Issuer.EncodeBinary(bw)
-	bw.WriteU32LE(a.Expiration)
-	bw.WriteBool(a.IsFrozen)
-}
-
-// GetName returns the asset name based on its type.
-func (a *Asset) GetName() string {
-
-	if a.AssetType == transaction.GoverningToken {
-		return "NEO"
-	} else if a.AssetType == transaction.UtilityToken {
-		return "NEOGas"
-	}
-
-	return a.Name
-}
diff --git a/pkg/core/state/asset_test.go b/pkg/core/state/asset_test.go
deleted file mode 100644
index e3cbf2950..000000000
--- a/pkg/core/state/asset_test.go
+++ /dev/null
@@ -1,41 +0,0 @@
-package state
-
-import (
-	"testing"
-
-	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
-	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
-	"github.com/nspcc-dev/neo-go/pkg/internal/random"
-	"github.com/nspcc-dev/neo-go/pkg/internal/testserdes"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-	"github.com/stretchr/testify/assert"
-)
-
-func TestEncodeDecodeAssetState(t *testing.T) {
-	asset := &Asset{
-		ID:         random.Uint256(),
-		AssetType:  transaction.Token,
-		Name:       "super cool token",
-		Amount:     util.Fixed8(1000000),
-		Available:  util.Fixed8(100),
-		Precision:  0,
-		FeeMode:    feeMode,
-		Owner:      keys.PublicKey{},
-		Admin:      random.Uint160(),
-		Issuer:     random.Uint160(),
-		Expiration: 10,
-		IsFrozen:   false,
-	}
-
-	testserdes.EncodeDecodeBinary(t, asset, new(Asset))
-}
-
-func TestAssetState_GetName_NEO(t *testing.T) {
-	asset := &Asset{AssetType: transaction.GoverningToken}
-	assert.Equal(t, "NEO", asset.GetName())
-}
-
-func TestAssetState_GetName_NEOGas(t *testing.T) {
-	asset := &Asset{AssetType: transaction.UtilityToken}
-	assert.Equal(t, "NEOGas", asset.GetName())
-}
diff --git a/pkg/core/state/unclaimed.go b/pkg/core/state/unclaimed.go
deleted file mode 100644
index c0d3bf11c..000000000
--- a/pkg/core/state/unclaimed.go
+++ /dev/null
@@ -1,69 +0,0 @@
-package state
-
-import (
-	"bytes"
-	"encoding/binary"
-
-	"github.com/nspcc-dev/neo-go/pkg/io"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-)
-
-// UnclaimedBalanceSize is a size of the UnclaimedBalance struct in bytes.
-const UnclaimedBalanceSize = util.Uint256Size + 2 + 4 + 4 + 8
-
-// UnclaimedBalances is a slice of UnclaimedBalance.
-type UnclaimedBalances struct {
-	Raw []byte
-}
-
-// Size returns an amount of store unclaimed balances.
-func (bs *UnclaimedBalances) Size() int {
-	return len(bs.Raw) / UnclaimedBalanceSize
-}
-
-// ForEach iterates over all unclaimed balances.
-func (bs *UnclaimedBalances) ForEach(f func(*UnclaimedBalance) error) error {
-	b := new(UnclaimedBalance)
-	for i := 0; i < len(bs.Raw); i += UnclaimedBalanceSize {
-		r := io.NewBinReaderFromBuf(bs.Raw[i : i+UnclaimedBalanceSize])
-		b.DecodeBinary(r)
-		if r.Err != nil {
-			return r.Err
-		} else if err := f(b); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// Remove removes specified unclaim from the list and returns
-// false if it wasn't found.
-func (bs *UnclaimedBalances) Remove(tx util.Uint256, index uint16) bool {
-	const keySize = util.Uint256Size + 2
-	key := make([]byte, keySize)
-	copy(key, tx[:])
-	binary.LittleEndian.PutUint16(key[util.Uint256Size:], index)
-
-	for i := 0; i < len(bs.Raw); i += UnclaimedBalanceSize {
-		if bytes.Equal(bs.Raw[i:i+keySize], key) {
-			lastIndex := len(bs.Raw) - UnclaimedBalanceSize
-			if i != lastIndex {
-				copy(bs.Raw[i:i+UnclaimedBalanceSize], bs.Raw[lastIndex:])
-			}
-			bs.Raw = bs.Raw[:lastIndex]
-			return true
-		}
-	}
-	return false
-}
-
-// Put puts new unclaim in a list.
-func (bs *UnclaimedBalances) Put(b *UnclaimedBalance) error {
-	w := io.NewBufBinWriter()
-	b.EncodeBinary(w.BinWriter)
-	if w.Err != nil {
-		return w.Err
-	}
-	bs.Raw = append(bs.Raw, w.Bytes()...)
-	return nil
-}
diff --git a/pkg/core/state/unclaimed_test.go b/pkg/core/state/unclaimed_test.go
deleted file mode 100644
index 5972688a6..000000000
--- a/pkg/core/state/unclaimed_test.go
+++ /dev/null
@@ -1,73 +0,0 @@
-package state
-
-import (
-	"encoding/binary"
-	"math/rand"
-	"testing"
-
-	"github.com/nspcc-dev/neo-go/pkg/internal/random"
-	"github.com/nspcc-dev/neo-go/pkg/internal/testserdes"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-	"github.com/stretchr/testify/require"
-)
-
-func TestUnclaimedBalance_Structure(t *testing.T) {
-	b := randomUnclaimed(t)
-	buf, err := testserdes.EncodeBinary(b)
-	require.NoError(t, err)
-	require.Equal(t, UnclaimedBalanceSize, len(buf))
-	require.Equal(t, b.Tx.BytesBE(), buf[:util.Uint256Size])
-	require.Equal(t, b.Index, binary.LittleEndian.Uint16(buf[util.Uint256Size:]))
-}
-
-func TestUnclaimedBalances_Put(t *testing.T) {
-	bs := new(UnclaimedBalances)
-	b1 := randomUnclaimed(t)
-	b2 := randomUnclaimed(t)
-	b3 := randomUnclaimed(t)
-
-	require.NoError(t, bs.Put(b1))
-	require.Equal(t, 1, bs.Size())
-	require.NoError(t, bs.Put(b2))
-	require.Equal(t, 2, bs.Size())
-	require.NoError(t, bs.Put(b3))
-	require.Equal(t, 3, bs.Size())
-	require.True(t, bs.Remove(b2.Tx, b2.Index))
-	require.Equal(t, 2, bs.Size())
-	require.False(t, bs.Remove(b2.Tx, b2.Index))
-	require.Equal(t, 2, bs.Size())
-	require.True(t, bs.Remove(b1.Tx, b1.Index))
-	require.Equal(t, 1, bs.Size())
-	require.True(t, bs.Remove(b3.Tx, b3.Index))
-	require.Equal(t, 0, bs.Size())
-}
-
-func TestUnclaimedBalances_ForEach(t *testing.T) {
-	bs := new(UnclaimedBalances)
-	b1 := randomUnclaimed(t)
-	b2 := randomUnclaimed(t)
-	b3 := randomUnclaimed(t)
-
-	require.NoError(t, bs.Put(b1))
-	require.NoError(t, bs.Put(b2))
-	require.NoError(t, bs.Put(b3))
-
-	var indices []uint16
-	err := bs.ForEach(func(b *UnclaimedBalance) error {
-		indices = append(indices, b.Index)
-		return nil
-	})
-	require.NoError(t, err)
-	require.Equal(t, []uint16{b1.Index, b2.Index, b3.Index}, indices)
-}
-
-func randomUnclaimed(t *testing.T) *UnclaimedBalance {
-	b := new(UnclaimedBalance)
-	b.Tx = random.Uint256()
-	b.Index = uint16(rand.Uint32())
-	b.Start = rand.Uint32()
-	b.End = rand.Uint32()
-	b.Value = util.Fixed8(rand.Int63())
-
-	return b
-}
diff --git a/pkg/core/state/unspent_coin.go b/pkg/core/state/unspent_coin.go
deleted file mode 100644
index a0f1e635e..000000000
--- a/pkg/core/state/unspent_coin.go
+++ /dev/null
@@ -1,60 +0,0 @@
-package state
-
-import (
-	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
-	"github.com/nspcc-dev/neo-go/pkg/io"
-)
-
-// UnspentCoin hold the state of a unspent coin.
-type UnspentCoin struct {
-	Height uint32
-	States []OutputState
-}
-
-// OutputState combines transaction output (UTXO) and its state
-// (spent/claimed...) along with the height of spend (if it's spent).
-type OutputState struct {
-	transaction.Output
-
-	SpendHeight uint32
-	State       Coin
-}
-
-// NewUnspentCoin returns a new unspent coin state with N confirmed states.
-func NewUnspentCoin(height uint32, tx *transaction.Transaction) *UnspentCoin {
-	u := &UnspentCoin{
-		Height: height,
-		States: make([]OutputState, len(tx.Outputs)),
-	}
-	for i := range tx.Outputs {
-		u.States[i] = OutputState{Output: tx.Outputs[i]}
-	}
-	return u
-}
-
-// EncodeBinary encodes UnspentCoin to the given BinWriter.
-func (s *UnspentCoin) EncodeBinary(bw *io.BinWriter) {
-	bw.WriteU32LE(s.Height)
-	bw.WriteArray(s.States)
-	bw.WriteVarUint(uint64(len(s.States)))
-}
-
-// DecodeBinary decodes UnspentCoin from the given BinReader.
-func (s *UnspentCoin) DecodeBinary(br *io.BinReader) {
-	s.Height = br.ReadU32LE()
-	br.ReadArray(&s.States)
-}
-
-// EncodeBinary implements Serializable interface.
-func (o *OutputState) EncodeBinary(w *io.BinWriter) {
-	o.Output.EncodeBinary(w)
-	w.WriteU32LE(o.SpendHeight)
-	w.WriteB(byte(o.State))
-}
-
-// DecodeBinary implements Serializable interface.
-func (o *OutputState) DecodeBinary(r *io.BinReader) {
-	o.Output.DecodeBinary(r)
-	o.SpendHeight = r.ReadU32LE()
-	o.State = Coin(r.ReadB())
-}
diff --git a/pkg/core/state/unspent_coin_test.go b/pkg/core/state/unspent_coin_test.go
deleted file mode 100644
index 51e778ab7..000000000
--- a/pkg/core/state/unspent_coin_test.go
+++ /dev/null
@@ -1,47 +0,0 @@
-package state
-
-import (
-	"testing"
-
-	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
-	"github.com/nspcc-dev/neo-go/pkg/internal/random"
-	"github.com/nspcc-dev/neo-go/pkg/internal/testserdes"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-)
-
-func TestDecodeEncodeUnspentCoin(t *testing.T) {
-	unspent := &UnspentCoin{
-		Height: 100500,
-		States: []OutputState{
-			{
-				Output: transaction.Output{
-					AssetID:    random.Uint256(),
-					Amount:     util.Fixed8(42),
-					ScriptHash: random.Uint160(),
-				},
-				SpendHeight: 201000,
-				State:       CoinSpent,
-			},
-			{
-				Output: transaction.Output{
-					AssetID:    random.Uint256(),
-					Amount:     util.Fixed8(420),
-					ScriptHash: random.Uint160(),
-				},
-				SpendHeight: 0,
-				State:       CoinConfirmed,
-			},
-			{
-				Output: transaction.Output{
-					AssetID:    random.Uint256(),
-					Amount:     util.Fixed8(4200),
-					ScriptHash: random.Uint160(),
-				},
-				SpendHeight: 111000,
-				State:       CoinSpent & CoinClaimed,
-			},
-		},
-	}
-
-	testserdes.EncodeDecodeBinary(t, unspent, new(UnspentCoin))
-}
diff --git a/pkg/core/storage/store.go b/pkg/core/storage/store.go
index 12a46dd69..960f9ba89 100644
--- a/pkg/core/storage/store.go
+++ b/pkg/core/storage/store.go
@@ -10,10 +10,6 @@ const (
 	DataBlock        KeyPrefix = 0x01
 	DataTransaction  KeyPrefix = 0x02
 	STAccount        KeyPrefix = 0x40
-	STCoin           KeyPrefix = 0x44
-	STSpentCoin      KeyPrefix = 0x45
-	STValidator      KeyPrefix = 0x48
-	STAsset          KeyPrefix = 0x4c
 	STNotification   KeyPrefix = 0x4d
 	STContract       KeyPrefix = 0x50
 	STStorage        KeyPrefix = 0x70
diff --git a/pkg/core/storage/store_test.go b/pkg/core/storage/store_test.go
index 9c9f6ef70..9b1e579e0 100644
--- a/pkg/core/storage/store_test.go
+++ b/pkg/core/storage/store_test.go
@@ -11,9 +11,6 @@ var (
 		DataBlock,
 		DataTransaction,
 		STAccount,
-		STCoin,
-		STValidator,
-		STAsset,
 		STContract,
 		STStorage,
 		IXHeaderHashList,
@@ -26,9 +23,6 @@ var (
 		0x01,
 		0x02,
 		0x40,
-		0x44,
-		0x48,
-		0x4c,
 		0x50,
 		0x70,
 		0x80,
diff --git a/pkg/core/transaction/asset_type.go b/pkg/core/transaction/asset_type.go
deleted file mode 100644
index 9d54eb28f..000000000
--- a/pkg/core/transaction/asset_type.go
+++ /dev/null
@@ -1,16 +0,0 @@
-package transaction
-
-// AssetType represents a NEO asset type.
-type AssetType uint8
-
-// Valid asset types.
-const (
-	CreditFlag     AssetType = 0x40
-	DutyFlag       AssetType = 0x80
-	GoverningToken AssetType = 0x00
-	UtilityToken   AssetType = 0x01
-	Currency       AssetType = 0x08
-	Share          AssetType = DutyFlag | 0x10
-	Invoice        AssetType = DutyFlag | 0x18
-	Token          AssetType = CreditFlag | 0x20
-)
diff --git a/pkg/core/transaction/claim.go b/pkg/core/transaction/claim.go
deleted file mode 100644
index 704d9035b..000000000
--- a/pkg/core/transaction/claim.go
+++ /dev/null
@@ -1,38 +0,0 @@
-package transaction
-
-import (
-	"math/rand"
-
-	"github.com/nspcc-dev/neo-go/pkg/io"
-)
-
-// ClaimTX represents a claim transaction.
-type ClaimTX struct {
-	Claims []Input
-}
-
-// NewClaimTX creates Transaction of ClaimType type.
-func NewClaimTX(claim *ClaimTX) *Transaction {
-	return &Transaction{
-		Type:       ClaimType,
-		Version:    0,
-		Nonce:      rand.Uint32(),
-		Data:       claim,
-		Attributes: []Attribute{},
-		Cosigners:  []Cosigner{},
-		Inputs:     []Input{},
-		Outputs:    []Output{},
-		Scripts:    []Witness{},
-		Trimmed:    false,
-	}
-}
-
-// DecodeBinary implements Serializable interface.
-func (tx *ClaimTX) DecodeBinary(br *io.BinReader) {
-	br.ReadArray(&tx.Claims)
-}
-
-// EncodeBinary implements Serializable interface.
-func (tx *ClaimTX) EncodeBinary(bw *io.BinWriter) {
-	bw.WriteArray(tx.Claims)
-}
diff --git a/pkg/core/transaction/contract.go b/pkg/core/transaction/contract.go
deleted file mode 100644
index c4a99a1cf..000000000
--- a/pkg/core/transaction/contract.go
+++ /dev/null
@@ -1,35 +0,0 @@
-package transaction
-
-import (
-	"math/rand"
-
-	"github.com/nspcc-dev/neo-go/pkg/io"
-)
-
-// ContractTX represents a contract transaction.
-// This TX has not special attributes.
-type ContractTX struct{}
-
-// NewContractTX creates Transaction of ContractType type.
-func NewContractTX() *Transaction {
-	return &Transaction{
-		Type:       ContractType,
-		Version:    0,
-		Nonce:      rand.Uint32(),
-		Data:       &ContractTX{},
-		Attributes: []Attribute{},
-		Cosigners:  []Cosigner{},
-		Inputs:     []Input{},
-		Outputs:    []Output{},
-		Scripts:    []Witness{},
-		Trimmed:    false,
-	}
-}
-
-// DecodeBinary implements Serializable interface.
-func (tx *ContractTX) DecodeBinary(r *io.BinReader) {
-}
-
-// EncodeBinary implements Serializable interface.
-func (tx *ContractTX) EncodeBinary(w *io.BinWriter) {
-}
diff --git a/pkg/core/transaction/contract_test.go b/pkg/core/transaction/contract_test.go
deleted file mode 100644
index f535b899c..000000000
--- a/pkg/core/transaction/contract_test.go
+++ /dev/null
@@ -1,30 +0,0 @@
-package transaction
-
-//TODO NEO3.0: Update binary
-/*
-func TestEncodeDecodeContract(t *testing.T) {
-	// mainnet transaction: bdf6cc3b9af12a7565bda80933a75ee8cef1bc771d0d58effc08e4c8b436da79
-	rawtx := "80000001888da99f8f497fd65c4325786a09511159c279af4e7eb532e9edd628c87cc1ee0000019b7cffdaa674beae0f930ebe6085af9093e5fe56b34a5c220ccdcf6efc336fc50082167010000000a8666b4830229d6a1a9b80f6088059191c122d2b0141409e79e132290c82916a88f1a3db5cf9f3248b780cfece938ab0f0812d0e188f3a489c7d1a23def86bd69d863ae67de753b2c2392e9497eadc8eb9fc43aa52c645232103e2f6a334e05002624cf616f01a62cff2844c34a3b08ca16048c259097e315078ac"
-	tx := decodeTransaction(rawtx, t)
-
-	assert.Equal(t, ContractType, tx.Type)
-	assert.IsType(t, tx.Data, &ContractTX{})
-	assert.Equal(t, 0, int(tx.Version))
-	assert.Equal(t, 1, len(tx.Inputs))
-
-	input := tx.Inputs[0]
-
-	assert.Equal(t, "eec17cc828d6ede932b57e4eaf79c2591151096a7825435cd67f498f9fa98d88", input.PrevHash.StringLE())
-	assert.Equal(t, 0, int(input.PrevIndex))
-	assert.Equal(t, int64(706), tx.Outputs[0].Amount.IntegralValue())
-	assert.Equal(t, int32(0), tx.Outputs[0].Amount.FractionalValue())
-	assert.Equal(t, "c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c9b", tx.Outputs[0].AssetID.StringLE())
-	assert.Equal(t, "a8666b4830229d6a1a9b80f6088059191c122d2b", tx.Outputs[0].ScriptHash.String())
-	assert.Equal(t, "bdf6cc3b9af12a7565bda80933a75ee8cef1bc771d0d58effc08e4c8b436da79", tx.Hash().StringLE())
-
-	// Encode
-	data, err := testserdes.EncodeBinary(tx)
-	assert.NoError(t, err)
-	assert.Equal(t, rawtx, hex.EncodeToString(data))
-}
-*/
diff --git a/pkg/core/transaction/helper_test.go b/pkg/core/transaction/helper_test.go
index 1f1cae62f..6cbd5e61c 100644
--- a/pkg/core/transaction/helper_test.go
+++ b/pkg/core/transaction/helper_test.go
@@ -9,8 +9,6 @@ import (
 
 var (
 	//TODO NEO3.0: Update binary
-	// https://neotracker.io/tx/2c6a45547b3898318e400e541628990a07acb00f3b9a15a8e966ae49525304da
-	rawClaimTX = "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"
 	// https://neotracker.io/tx/fe4b3af60677204c57e573a57bdc97bc5059b05ad85b1474f84431f88d910f64
 	rawInvocationTX = "d101590400b33f7114839c33710da24cf8e7d536b8d244f3991cf565c8146063795d3b9b3cd55aef026eae992b91063db0db53c1087472616e7366657267c5cc1cb5392019e2cc4e6d6b5ea54c8d4b6d11acf166cb072961424c54f6000000000000000001206063795d3b9b3cd55aef026eae992b91063db0db0000014140c6a131c55ca38995402dff8e92ac55d89cbed4b98dfebbcb01acbc01bd78fa2ce2061be921b8999a9ab79c2958875bccfafe7ce1bbbaf1f56580815ea3a4feed232102d41ddce2c97be4c9aa571b8a32cbc305aa29afffbcae71b0ef568db0e93929aaac"
 )
diff --git a/pkg/core/transaction/inout.go b/pkg/core/transaction/inout.go
deleted file mode 100644
index 75bc026ac..000000000
--- a/pkg/core/transaction/inout.go
+++ /dev/null
@@ -1,8 +0,0 @@
-package transaction
-
-// InOut represents an Input bound to its corresponding Output which is a useful
-// combination for many purposes.
-type InOut struct {
-	In  Input
-	Out Output
-}
diff --git a/pkg/core/transaction/input.go b/pkg/core/transaction/input.go
deleted file mode 100644
index 40462fba2..000000000
--- a/pkg/core/transaction/input.go
+++ /dev/null
@@ -1,94 +0,0 @@
-package transaction
-
-import (
-	"sort"
-
-	"github.com/nspcc-dev/neo-go/pkg/io"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-)
-
-// Input represents a Transaction input (CoinReference).
-type Input struct {
-	// The hash of the previous transaction.
-	PrevHash util.Uint256 `json:"txid"`
-
-	// The index of the previous transaction.
-	PrevIndex uint16 `json:"vout"`
-}
-
-// DecodeBinary implements Serializable interface.
-func (in *Input) DecodeBinary(br *io.BinReader) {
-	br.ReadBytes(in.PrevHash[:])
-	in.PrevIndex = br.ReadU16LE()
-}
-
-// EncodeBinary implements Serializable interface.
-func (in *Input) EncodeBinary(bw *io.BinWriter) {
-	bw.WriteBytes(in.PrevHash[:])
-	bw.WriteU16LE(in.PrevIndex)
-}
-
-// Cmp compares two Inputs by their hash and index allowing to make a set of
-// transactions ordered.
-func (in *Input) Cmp(other *Input) int {
-	hashcmp := in.PrevHash.CompareTo(other.PrevHash)
-	if hashcmp == 0 {
-		return int(in.PrevIndex) - int(other.PrevIndex)
-	}
-	return hashcmp
-}
-
-// MapInputsToSorted maps given slice of inputs into a new slice of pointers
-// to inputs sorted by their PrevHash and PrevIndex.
-func MapInputsToSorted(ins []Input) []*Input {
-	ptrs := make([]*Input, len(ins))
-	for i := range ins {
-		ptrs[i] = &ins[i]
-	}
-	sort.Slice(ptrs, func(i, j int) bool {
-		return ptrs[i].Cmp(ptrs[j]) < 0
-	})
-	return ptrs
-}
-
-// GroupInputsByPrevHash groups all TX inputs by their previous hash into
-// several slices (which actually are subslices of one new slice with pointers).
-// Each of these slices contains at least one element.
-func GroupInputsByPrevHash(ins []Input) [][]*Input {
-	if len(ins) == 0 {
-		return nil
-	}
-
-	ptrs := MapInputsToSorted(ins)
-	var first int
-	res := make([][]*Input, 0)
-	currentHash := ptrs[0].PrevHash
-
-	for i := range ptrs {
-		if !currentHash.Equals(ptrs[i].PrevHash) {
-			res = append(res, ptrs[first:i])
-			first = i
-			currentHash = ptrs[i].PrevHash
-		}
-	}
-	res = append(res, ptrs[first:])
-	return res
-}
-
-// HaveDuplicateInputs checks inputs for duplicates and returns true if there are
-// any.
-func HaveDuplicateInputs(ins []Input) bool {
-	if len(ins) < 2 {
-		return false
-	}
-	if len(ins) == 2 {
-		return ins[0] == ins[1]
-	}
-	ptrs := MapInputsToSorted(ins)
-	for i := 1; i < len(ptrs); i++ {
-		if *ptrs[i] == *ptrs[i-1] {
-			return true
-		}
-	}
-	return false
-}
diff --git a/pkg/core/transaction/input_test.go b/pkg/core/transaction/input_test.go
deleted file mode 100644
index c8b9fad06..000000000
--- a/pkg/core/transaction/input_test.go
+++ /dev/null
@@ -1,144 +0,0 @@
-package transaction
-
-import (
-	"testing"
-
-	"github.com/nspcc-dev/neo-go/pkg/util"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func TestGroupInputsByPrevHash0(t *testing.T) {
-	inputs := make([]Input, 0)
-	res := GroupInputsByPrevHash(inputs)
-	require.Equal(t, 0, len(res))
-}
-
-func TestGroupInputsByPrevHash1(t *testing.T) {
-	inputs := make([]Input, 0)
-	hash, err := util.Uint256DecodeStringLE("46168f963d6d8168a870405f66cc9e13a235791013b8ee2f90cc20a8293bd1af")
-	require.NoError(t, err)
-	inputs = append(inputs, Input{PrevHash: hash, PrevIndex: 42})
-	res := GroupInputsByPrevHash(inputs)
-	require.Equal(t, 1, len(res))
-	require.Equal(t, 1, len(res[0]))
-	assert.Equal(t, hash, res[0][0].PrevHash)
-	assert.Equal(t, uint16(42), res[0][0].PrevIndex)
-}
-
-func TestGroupInputsByPrevHashMany(t *testing.T) {
-	hash1, err := util.Uint256DecodeStringBE("a83ba6ede918a501558d3170a124324aedc89909e64c4ff2c6f863094f980b25")
-	require.NoError(t, err)
-	hash2, err := util.Uint256DecodeStringBE("629397158f852e838077bb2715b13a2e29b0a51c2157e5466321b70ed7904ce9")
-	require.NoError(t, err)
-	hash3, err := util.Uint256DecodeStringBE("caa41245c3e48ddc13dabe989ba8fbc59418e9228fef9efb62855b0b17d7448b")
-	require.NoError(t, err)
-	inputs := make([]Input, 0)
-	for i := 0; i < 10; i++ {
-		inputs = append(inputs, Input{PrevHash: hash1, PrevIndex: uint16(i)})
-		inputs = append(inputs, Input{PrevHash: hash2, PrevIndex: uint16(i)})
-		inputs = append(inputs, Input{PrevHash: hash3, PrevIndex: uint16(i)})
-	}
-	for i := 15; i < 20; i++ {
-		inputs = append(inputs, Input{PrevHash: hash3, PrevIndex: uint16(i)})
-	}
-	for i := 10; i < 15; i++ {
-		inputs = append(inputs, Input{PrevHash: hash2, PrevIndex: uint16(i)})
-		inputs = append(inputs, Input{PrevHash: hash3, PrevIndex: uint16(i)})
-	}
-	seen := make(map[uint16]bool)
-	res := GroupInputsByPrevHash(inputs)
-	require.Equal(t, 3, len(res))
-	assert.Equal(t, hash2, res[0][0].PrevHash)
-	assert.Equal(t, 15, len(res[0]))
-	for i := range res[0] {
-		assert.Equal(t, res[0][i].PrevHash, res[0][0].PrevHash)
-		assert.Equal(t, false, seen[res[0][i].PrevIndex])
-		seen[res[0][i].PrevIndex] = true
-	}
-	seen = make(map[uint16]bool)
-	assert.Equal(t, hash1, res[1][0].PrevHash)
-	assert.Equal(t, 10, len(res[1]))
-	for i := range res[1] {
-		assert.Equal(t, res[1][i].PrevHash, res[1][0].PrevHash)
-		assert.Equal(t, false, seen[res[1][i].PrevIndex])
-		seen[res[1][i].PrevIndex] = true
-	}
-	seen = make(map[uint16]bool)
-	assert.Equal(t, hash3, res[2][0].PrevHash)
-	assert.Equal(t, 20, len(res[2]))
-	for i := range res[2] {
-		assert.Equal(t, res[2][i].PrevHash, res[2][0].PrevHash)
-		assert.Equal(t, false, seen[res[2][i].PrevIndex])
-		seen[res[2][i].PrevIndex] = true
-	}
-}
-
-func TestHaveDuplicateInputs0(t *testing.T) {
-	inputs := make([]Input, 0)
-	require.False(t, HaveDuplicateInputs(inputs))
-}
-
-func TestHaveDuplicateInputs1(t *testing.T) {
-	inputs := make([]Input, 0)
-	hash, err := util.Uint256DecodeStringLE("46168f963d6d8168a870405f66cc9e13a235791013b8ee2f90cc20a8293bd1af")
-	require.NoError(t, err)
-	inputs = append(inputs, Input{PrevHash: hash, PrevIndex: 42})
-	require.False(t, HaveDuplicateInputs(inputs))
-}
-
-func TestHaveDuplicateInputs2True(t *testing.T) {
-	inputs := make([]Input, 0)
-	hash, err := util.Uint256DecodeStringLE("46168f963d6d8168a870405f66cc9e13a235791013b8ee2f90cc20a8293bd1af")
-	require.NoError(t, err)
-	inputs = append(inputs, Input{PrevHash: hash, PrevIndex: 42})
-	inputs = append(inputs, Input{PrevHash: hash, PrevIndex: 42})
-	require.True(t, HaveDuplicateInputs(inputs))
-}
-
-func TestHaveDuplicateInputs2FalseInd(t *testing.T) {
-	inputs := make([]Input, 0)
-	hash, err := util.Uint256DecodeStringLE("46168f963d6d8168a870405f66cc9e13a235791013b8ee2f90cc20a8293bd1af")
-	require.NoError(t, err)
-	inputs = append(inputs, Input{PrevHash: hash, PrevIndex: 42})
-	inputs = append(inputs, Input{PrevHash: hash, PrevIndex: 41})
-	require.False(t, HaveDuplicateInputs(inputs))
-}
-
-func TestHaveDuplicateInputs2FalseHash(t *testing.T) {
-	inputs := make([]Input, 0)
-	hash1, err := util.Uint256DecodeStringBE("a83ba6ede918a501558d3170a124324aedc89909e64c4ff2c6f863094f980b25")
-	require.NoError(t, err)
-	hash2, err := util.Uint256DecodeStringBE("629397158f852e838077bb2715b13a2e29b0a51c2157e5466321b70ed7904ce9")
-	require.NoError(t, err)
-	inputs = append(inputs, Input{PrevHash: hash1, PrevIndex: 42})
-	inputs = append(inputs, Input{PrevHash: hash2, PrevIndex: 42})
-	require.False(t, HaveDuplicateInputs(inputs))
-}
-
-func TestHaveDuplicateInputsMFalse(t *testing.T) {
-	inputs := make([]Input, 0)
-	hash1, err := util.Uint256DecodeStringBE("a83ba6ede918a501558d3170a124324aedc89909e64c4ff2c6f863094f980b25")
-	require.NoError(t, err)
-	hash2, err := util.Uint256DecodeStringBE("629397158f852e838077bb2715b13a2e29b0a51c2157e5466321b70ed7904ce9")
-	require.NoError(t, err)
-	for i := 0; i < 10; i++ {
-		inputs = append(inputs, Input{PrevHash: hash1, PrevIndex: uint16(i)})
-		inputs = append(inputs, Input{PrevHash: hash2, PrevIndex: uint16(i)})
-	}
-	require.False(t, HaveDuplicateInputs(inputs))
-}
-
-func TestHaveDuplicateInputsMTrue(t *testing.T) {
-	inputs := make([]Input, 0)
-	hash1, err := util.Uint256DecodeStringBE("a83ba6ede918a501558d3170a124324aedc89909e64c4ff2c6f863094f980b25")
-	require.NoError(t, err)
-	hash2, err := util.Uint256DecodeStringBE("629397158f852e838077bb2715b13a2e29b0a51c2157e5466321b70ed7904ce9")
-	require.NoError(t, err)
-	for i := 0; i < 10; i++ {
-		inputs = append(inputs, Input{PrevHash: hash1, PrevIndex: uint16(i)})
-		inputs = append(inputs, Input{PrevHash: hash2, PrevIndex: uint16(i)})
-	}
-	inputs = append(inputs, Input{PrevHash: hash1, PrevIndex: 0})
-	require.True(t, HaveDuplicateInputs(inputs))
-}
diff --git a/pkg/core/transaction/invocation.go b/pkg/core/transaction/invocation.go
deleted file mode 100644
index 9abb7b1a9..000000000
--- a/pkg/core/transaction/invocation.go
+++ /dev/null
@@ -1,65 +0,0 @@
-package transaction
-
-import (
-	"errors"
-	"math/rand"
-
-	"github.com/nspcc-dev/neo-go/pkg/io"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-)
-
-// InvocationTX represents a invocation transaction and is used to
-// deploy smart contract to the NEO blockchain.
-type InvocationTX struct {
-	// Script output of the smart contract.
-	Script []byte
-
-	// Gas cost of the smart contract.
-	Gas     util.Fixed8
-	Version uint8
-}
-
-// NewInvocationTX returns a new invocation transaction.
-func NewInvocationTX(script []byte, gas util.Fixed8) *Transaction {
-	return &Transaction{
-		Type:    InvocationType,
-		Version: 1,
-		Nonce:   rand.Uint32(),
-		Data: &InvocationTX{
-			Script:  script,
-			Gas:     gas,
-			Version: 1,
-		},
-		Attributes: []Attribute{},
-		Cosigners:  []Cosigner{},
-		Inputs:     []Input{},
-		Outputs:    []Output{},
-		Scripts:    []Witness{},
-	}
-}
-
-// DecodeBinary implements Serializable interface.
-func (tx *InvocationTX) DecodeBinary(br *io.BinReader) {
-	tx.Script = br.ReadVarBytes()
-	if br.Err == nil && len(tx.Script) == 0 {
-		br.Err = errors.New("no script")
-		return
-	}
-	if tx.Version >= 1 {
-		tx.Gas.DecodeBinary(br)
-		if br.Err == nil && tx.Gas.LessThan(0) {
-			br.Err = errors.New("negative gas")
-			return
-		}
-	} else {
-		tx.Gas = util.Fixed8FromInt64(0)
-	}
-}
-
-// EncodeBinary implements Serializable interface.
-func (tx *InvocationTX) EncodeBinary(bw *io.BinWriter) {
-	bw.WriteVarBytes(tx.Script)
-	if tx.Version >= 1 {
-		tx.Gas.EncodeBinary(bw)
-	}
-}
diff --git a/pkg/core/transaction/invocation_test.go b/pkg/core/transaction/invocation_test.go
deleted file mode 100644
index babe7d275..000000000
--- a/pkg/core/transaction/invocation_test.go
+++ /dev/null
@@ -1,54 +0,0 @@
-package transaction
-
-import (
-	"encoding/hex"
-	"testing"
-
-	"github.com/nspcc-dev/neo-go/pkg/internal/testserdes"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func TestInvocationZeroScript(t *testing.T) {
-	// Zero-length script.
-	in, err := hex.DecodeString("000000000000000000")
-	require.NoError(t, err)
-
-	inv := &InvocationTX{Version: 1}
-	assert.Error(t, testserdes.DecodeBinary(in, inv))
-
-	// PUSH1 script.
-	in, err = hex.DecodeString("01510000000000000000")
-	require.NoError(t, err)
-
-	assert.NoError(t, testserdes.DecodeBinary(in, inv))
-}
-
-func TestInvocationNegativeGas(t *testing.T) {
-	// Negative GAS
-	in, err := hex.DecodeString("015100000000000000ff")
-	require.NoError(t, err)
-
-	inv := &InvocationTX{Version: 1}
-	assert.Error(t, testserdes.DecodeBinary(in, inv))
-
-	// Positive GAS.
-	in, err = hex.DecodeString("01510100000000000000")
-	require.NoError(t, err)
-
-	assert.NoError(t, testserdes.DecodeBinary(in, inv))
-	assert.Equal(t, util.Fixed8(1), inv.Gas)
-}
-
-func TestInvocationVersionZero(t *testing.T) {
-	in, err := hex.DecodeString("0151")
-	require.NoError(t, err)
-
-	inv := &InvocationTX{Version: 1}
-	assert.Error(t, testserdes.DecodeBinary(in, inv))
-
-	inv = &InvocationTX{Version: 0}
-	assert.NoError(t, testserdes.DecodeBinary(in, inv))
-	assert.Equal(t, util.Fixed8(0), inv.Gas)
-}
diff --git a/pkg/core/transaction/issue.go b/pkg/core/transaction/issue.go
deleted file mode 100644
index d2ab6034f..000000000
--- a/pkg/core/transaction/issue.go
+++ /dev/null
@@ -1,35 +0,0 @@
-package transaction
-
-import (
-	"math/rand"
-
-	"github.com/nspcc-dev/neo-go/pkg/io"
-)
-
-// IssueTX represents a issue transaction.
-// This TX has not special attributes.
-type IssueTX struct{}
-
-// NewIssueTX creates Transaction of IssueType type.
-func NewIssueTX() *Transaction {
-	return &Transaction{
-		Type:       IssueType,
-		Version:    0,
-		Nonce:      rand.Uint32(),
-		Data:       &IssueTX{},
-		Attributes: []Attribute{},
-		Cosigners:  []Cosigner{},
-		Inputs:     []Input{},
-		Outputs:    []Output{},
-		Scripts:    []Witness{},
-		Trimmed:    false,
-	}
-}
-
-// DecodeBinary implements Serializable interface.
-func (tx *IssueTX) DecodeBinary(r *io.BinReader) {
-}
-
-// EncodeBinary implements Serializable interface.
-func (tx *IssueTX) EncodeBinary(w *io.BinWriter) {
-}
diff --git a/pkg/core/transaction/output.go b/pkg/core/transaction/output.go
deleted file mode 100644
index 11ad85b2e..000000000
--- a/pkg/core/transaction/output.go
+++ /dev/null
@@ -1,82 +0,0 @@
-package transaction
-
-import (
-	"encoding/json"
-
-	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
-	"github.com/nspcc-dev/neo-go/pkg/io"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-)
-
-// Output represents a Transaction output.
-type Output struct {
-	// The NEO asset id used in the transaction.
-	AssetID util.Uint256 `json:"asset"`
-
-	// Amount of AssetType send or received.
-	Amount util.Fixed8 `json:"value"`
-
-	// The address of the recipient.
-	ScriptHash util.Uint160 `json:"address"`
-
-	// The position of the Output in slice []Output. This is actually set in NewTransactionOutputRaw
-	// and used for displaying purposes.
-	Position int `json:"n"`
-}
-
-type outputAux struct {
-	AssetID    util.Uint256 `json:"asset"`
-	Amount     util.Fixed8  `json:"value"`
-	ScriptHash string       `json:"address"`
-	Position   int          `json:"n"`
-}
-
-// NewOutput returns a new transaction output.
-func NewOutput(assetID util.Uint256, amount util.Fixed8, scriptHash util.Uint160) *Output {
-	return &Output{
-		AssetID:    assetID,
-		Amount:     amount,
-		ScriptHash: scriptHash,
-	}
-}
-
-// DecodeBinary implements Serializable interface.
-func (out *Output) DecodeBinary(br *io.BinReader) {
-	br.ReadBytes(out.AssetID[:])
-	out.Amount.DecodeBinary(br)
-	br.ReadBytes(out.ScriptHash[:])
-}
-
-// EncodeBinary implements Serializable interface.
-func (out *Output) EncodeBinary(bw *io.BinWriter) {
-	bw.WriteBytes(out.AssetID[:])
-	out.Amount.EncodeBinary(bw)
-	bw.WriteBytes(out.ScriptHash[:])
-}
-
-// MarshalJSON implements the Marshaler interface.
-func (out *Output) MarshalJSON() ([]byte, error) {
-	return json.Marshal(map[string]interface{}{
-		"asset":   out.AssetID,
-		"value":   out.Amount,
-		"address": address.Uint160ToString(out.ScriptHash),
-		"n":       out.Position,
-	})
-}
-
-// UnmarshalJSON implements json.Unmarshaler interface.
-func (out *Output) UnmarshalJSON(data []byte) error {
-	var outAux outputAux
-	err := json.Unmarshal(data, &outAux)
-	if err != nil {
-		return err
-	}
-	out.ScriptHash, err = address.StringToUint160(outAux.ScriptHash)
-	if err != nil {
-		return err
-	}
-	out.Amount = outAux.Amount
-	out.AssetID = outAux.AssetID
-	out.Position = outAux.Position
-	return nil
-}
diff --git a/pkg/core/transaction/register.go b/pkg/core/transaction/register.go
deleted file mode 100644
index 9bff3efbe..000000000
--- a/pkg/core/transaction/register.go
+++ /dev/null
@@ -1,82 +0,0 @@
-package transaction
-
-import (
-	"encoding/json"
-	"math/rand"
-
-	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
-	"github.com/nspcc-dev/neo-go/pkg/io"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-)
-
-// RegisterTX represents a register transaction.
-// NOTE: This is deprecated.
-type RegisterTX struct {
-	// The type of the asset being registered.
-	AssetType AssetType
-
-	// Name of the asset being registered.
-	Name string
-
-	// Amount registered.
-	// Unlimited mode -0.00000001.
-	Amount util.Fixed8
-
-	// Decimals.
-	Precision uint8
-
-	// Public key of the owner.
-	Owner keys.PublicKey
-
-	Admin util.Uint160
-}
-
-// NewRegisterTX creates Transaction of RegisterType type.
-func NewRegisterTX(register *RegisterTX) *Transaction {
-	return &Transaction{
-		Type:       RegisterType,
-		Version:    0,
-		Nonce:      rand.Uint32(),
-		Data:       register,
-		Attributes: []Attribute{},
-		Cosigners:  []Cosigner{},
-		Inputs:     []Input{},
-		Outputs:    []Output{},
-		Scripts:    []Witness{},
-		Trimmed:    false,
-	}
-}
-
-// DecodeBinary implements Serializable interface.
-func (tx *RegisterTX) DecodeBinary(br *io.BinReader) {
-	tx.AssetType = AssetType(br.ReadB())
-
-	tx.Name = br.ReadString()
-
-	tx.Amount.DecodeBinary(br)
-	tx.Precision = uint8(br.ReadB())
-
-	tx.Owner.DecodeBinary(br)
-
-	tx.Admin.DecodeBinary(br)
-}
-
-// EncodeBinary implements Serializable interface.
-func (tx *RegisterTX) EncodeBinary(bw *io.BinWriter) {
-	bw.WriteB(byte(tx.AssetType))
-	bw.WriteString(tx.Name)
-	tx.Amount.EncodeBinary(bw)
-	bw.WriteB(byte(tx.Precision))
-	bw.WriteBytes(tx.Owner.Bytes())
-	tx.Admin.EncodeBinary(bw)
-}
-
-// registeredAsset is a wrapper for RegisterTransaction
-type registeredAsset struct {
-	AssetType AssetType       `json:"type,omitempty"`
-	Name      json.RawMessage `json:"name,omitempty"`
-	Amount    util.Fixed8     `json:"amount,omitempty"`
-	Precision uint8           `json:"precision,omitempty"`
-	Owner     keys.PublicKey  `json:"owner,omitempty"`
-	Admin     string          `json:"admin,omitempty"`
-}
diff --git a/pkg/core/transaction/register_test.go b/pkg/core/transaction/register_test.go
deleted file mode 100644
index 23d52ab0e..000000000
--- a/pkg/core/transaction/register_test.go
+++ /dev/null
@@ -1,46 +0,0 @@
-package transaction
-
-import (
-	"testing"
-
-	"github.com/nspcc-dev/neo-go/pkg/internal/testserdes"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-)
-
-func TestRegisterTX(t *testing.T) {
-	someuint160, _ := util.Uint160DecodeStringBE("4d3b96ae1bcc5a585e075e3b81920210dec16302")
-	registerTx := &RegisterTX{
-		AssetType: UtilityToken,
-		Name:      "this is some token I created",
-		Amount:    util.Fixed8FromInt64(1000000),
-		Precision: 8,
-		Admin:     someuint160,
-	}
-	tx := NewRegisterTX(registerTx)
-	_ = tx.Hash()
-
-	testserdes.EncodeDecodeBinary(t, tx, new(Transaction))
-}
-
-//TODO NEO3.0: update binary
-/*
-func TestDecodeRegisterTXFromRawString(t *testing.T) {
-	rawTX := "400000455b7b226c616e67223a227a682d434e222c226e616d65223a22e5b08fe89a81e882a1227d2c7b226c616e67223a22656e222c226e616d65223a22416e745368617265227d5d0000c16ff28623000000da1745e9b549bd0bfa1a569971c77eba30cd5a4b00000000"
-	b, err := hex.DecodeString(rawTX)
-	require.NoError(t, err)
-
-	tx := &Transaction{}
-	assert.NoError(t, testserdes.DecodeBinary(b, tx))
-	assert.Equal(t, RegisterType, tx.Type)
-	txData := tx.Data.(*RegisterTX)
-	assert.Equal(t, GoverningToken, txData.AssetType)
-	assert.Equal(t, "[{\"lang\":\"zh-CN\",\"name\":\"小蚁股\"},{\"lang\":\"en\",\"name\":\"AntShare\"}]", txData.Name)
-	assert.Equal(t, util.Fixed8FromInt64(100000000), txData.Amount)
-	assert.Equal(t, uint8(0), txData.Precision)
-	assert.Equal(t, keys.PublicKey{}, txData.Owner)
-	assert.Equal(t, "Abf2qMs1pzQb8kYk9RuxtUb9jtRKJVuBJt", address.Uint160ToString(txData.Admin))
-	assert.Equal(t, "c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c9b", tx.Hash().StringLE())
-
-	testserdes.EncodeDecodeBinary(t, tx, new(Transaction))
-}
-*/
diff --git a/pkg/core/transaction/result.go b/pkg/core/transaction/result.go
deleted file mode 100644
index b5c639bca..000000000
--- a/pkg/core/transaction/result.go
+++ /dev/null
@@ -1,9 +0,0 @@
-package transaction
-
-import "github.com/nspcc-dev/neo-go/pkg/util"
-
-// Result represents the Result of a transaction.
-type Result struct {
-	AssetID util.Uint256
-	Amount  util.Fixed8
-}
diff --git a/pkg/core/transaction/transaction.go b/pkg/core/transaction/transaction.go
index 6099ddaa2..f0d1f8763 100644
--- a/pkg/core/transaction/transaction.go
+++ b/pkg/core/transaction/transaction.go
@@ -4,7 +4,7 @@ import (
 	"encoding/hex"
 	"encoding/json"
 	"errors"
-	"fmt"
+	"math/rand"
 
 	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
 	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
@@ -26,9 +26,6 @@ const (
 
 // Transaction is a process recorded in the NEO blockchain.
 type Transaction struct {
-	// The type of the transaction.
-	Type TXType
-
 	// The trading version which is currently 0.
 	Version uint8
 
@@ -48,9 +45,8 @@ type Transaction struct {
 	// transaction should fail verification.
 	ValidUntilBlock uint32
 
-	// Data specific to the type of the transaction.
-	// This is always a pointer to a <Type>Transaction.
-	Data TXer
+	// Code to run in NeoVM for this transaction.
+	Script []byte
 
 	// Transaction attributes.
 	Attributes []Attribute
@@ -58,12 +54,6 @@ type Transaction struct {
 	// Transaction cosigners (not include Sender).
 	Cosigners []Cosigner
 
-	// The inputs of the transaction.
-	Inputs []Input
-
-	// The outputs of the transaction.
-	Outputs []Output
-
 	// The scripts that comes with this transaction.
 	// Scripts exist out of the verification script
 	// and invocation script.
@@ -89,6 +79,20 @@ func NewTrimmedTX(hash util.Uint256) *Transaction {
 	}
 }
 
+// New returns a new transaction to execute given script and pay given system
+// fee.
+func New(script []byte, gas util.Fixed8) *Transaction {
+	return &Transaction{
+		Version:    0,
+		Nonce:      rand.Uint32(),
+		Script:     script,
+		SystemFee:  gas,
+		Attributes: []Attribute{},
+		Cosigners:  []Cosigner{},
+		Scripts:    []Witness{},
+	}
+}
+
 // Hash returns the hash of the transaction.
 func (t *Transaction) Hash() util.Uint256 {
 	if t.hash.Equals(util.Uint256{}) {
@@ -109,20 +113,13 @@ func (t *Transaction) VerificationHash() util.Uint256 {
 	return t.verificationHash
 }
 
-// AddOutput adds the given output to the transaction outputs.
-func (t *Transaction) AddOutput(out *Output) {
-	t.Outputs = append(t.Outputs, *out)
-}
-
-// AddInput adds the given input to the transaction inputs.
-func (t *Transaction) AddInput(in *Input) {
-	t.Inputs = append(t.Inputs, *in)
-}
-
 // DecodeBinary implements Serializable interface.
 func (t *Transaction) DecodeBinary(br *io.BinReader) {
-	t.Type = TXType(br.ReadB())
 	t.Version = uint8(br.ReadB())
+	if t.Version > 0 {
+		br.Err = errors.New("only version 0 is supported")
+		return
+	}
 	t.Nonce = br.ReadU32LE()
 	t.Sender.DecodeBinary(br)
 	t.SystemFee.DecodeBinary(br)
@@ -140,7 +137,6 @@ func (t *Transaction) DecodeBinary(br *io.BinReader) {
 		return
 	}
 	t.ValidUntilBlock = br.ReadU32LE()
-	t.decodeData(br)
 
 	br.ReadArray(&t.Attributes)
 
@@ -154,14 +150,12 @@ func (t *Transaction) DecodeBinary(br *io.BinReader) {
 		}
 	}
 
-	br.ReadArray(&t.Inputs)
-	br.ReadArray(&t.Outputs)
-	for i := range t.Outputs {
-		if t.Outputs[i].Amount.LessThan(0) {
-			br.Err = errors.New("negative output")
-			return
-		}
+	t.Script = br.ReadVarBytes()
+	if br.Err == nil && len(t.Script) == 0 {
+		br.Err = errors.New("no script")
+		return
 	}
+
 	br.ReadArray(&t.Scripts)
 
 	// Create the hash of the transaction at decode, so we dont need
@@ -171,28 +165,6 @@ func (t *Transaction) DecodeBinary(br *io.BinReader) {
 	}
 }
 
-func (t *Transaction) decodeData(r *io.BinReader) {
-	switch t.Type {
-	case InvocationType:
-		t.Data = &InvocationTX{Version: t.Version}
-		t.Data.(*InvocationTX).DecodeBinary(r)
-	case ClaimType:
-		t.Data = &ClaimTX{}
-		t.Data.(*ClaimTX).DecodeBinary(r)
-	case ContractType:
-		t.Data = &ContractTX{}
-		t.Data.(*ContractTX).DecodeBinary(r)
-	case RegisterType:
-		t.Data = &RegisterTX{}
-		t.Data.(*RegisterTX).DecodeBinary(r)
-	case IssueType:
-		t.Data = &IssueTX{}
-		t.Data.(*IssueTX).DecodeBinary(r)
-	default:
-		r.Err = fmt.Errorf("invalid TX type %x", t.Type)
-	}
-}
-
 // EncodeBinary implements Serializable interface.
 func (t *Transaction) EncodeBinary(bw *io.BinWriter) {
 	t.encodeHashableFields(bw)
@@ -202,12 +174,10 @@ func (t *Transaction) EncodeBinary(bw *io.BinWriter) {
 // encodeHashableFields encodes the fields that are not used for
 // signing the transaction, which are all fields except the scripts.
 func (t *Transaction) encodeHashableFields(bw *io.BinWriter) {
-	noData := t.Type == ContractType
-	if t.Data == nil && !noData {
-		bw.Err = errors.New("transaction has no data")
+	if len(t.Script) == 0 {
+		bw.Err = errors.New("transaction has no script")
 		return
 	}
-	bw.WriteB(byte(t.Type))
 	bw.WriteB(byte(t.Version))
 	bw.WriteU32LE(t.Nonce)
 	t.Sender.EncodeBinary(bw)
@@ -215,22 +185,13 @@ func (t *Transaction) encodeHashableFields(bw *io.BinWriter) {
 	t.NetworkFee.EncodeBinary(bw)
 	bw.WriteU32LE(t.ValidUntilBlock)
 
-	// Underlying TXer.
-	if !noData {
-		t.Data.EncodeBinary(bw)
-	}
-
 	// Attributes
 	bw.WriteArray(t.Attributes)
 
 	// Cosigners
 	bw.WriteArray(t.Cosigners)
 
-	// Inputs
-	bw.WriteArray(t.Inputs)
-
-	// Outputs
-	bw.WriteArray(t.Outputs)
+	bw.WriteVarBytes(t.Script)
 }
 
 // createHash creates the hash of the transaction.
@@ -248,16 +209,6 @@ func (t *Transaction) createHash() error {
 	return nil
 }
 
-// GroupOutputByAssetID groups all TX outputs by their assetID.
-func (t Transaction) GroupOutputByAssetID() map[util.Uint256][]*Output {
-	m := make(map[util.Uint256][]*Output)
-	for i := range t.Outputs {
-		hash := t.Outputs[i].AssetID
-		m[hash] = append(m[hash], &t.Outputs[i])
-	}
-	return m
-}
-
 // GetSignedPart returns a part of the transaction which must be signed.
 func (t *Transaction) GetSignedPart() []byte {
 	buf := io.NewBufBinWriter()
@@ -300,7 +251,6 @@ func (t *Transaction) FeePerByte() util.Fixed8 {
 type transactionJSON struct {
 	TxID            util.Uint256 `json:"txid"`
 	Size            int          `json:"size"`
-	Type            TXType       `json:"type"`
 	Version         uint8        `json:"version"`
 	Nonce           uint32       `json:"nonce"`
 	Sender          string       `json:"sender"`
@@ -309,14 +259,8 @@ type transactionJSON struct {
 	ValidUntilBlock uint32       `json:"valid_until_block"`
 	Attributes      []Attribute  `json:"attributes"`
 	Cosigners       []Cosigner   `json:"cosigners"`
-	Inputs          []Input      `json:"vin"`
-	Outputs         []Output     `json:"vout"`
+	Script          string       `json:"script"`
 	Scripts         []Witness    `json:"scripts"`
-
-	Claims []Input          `json:"claims,omitempty"`
-	Script string           `json:"script,omitempty"`
-	Gas    util.Fixed8      `json:"gas,omitempty"`
-	Asset  *registeredAsset `json:"asset,omitempty"`
 }
 
 // MarshalJSON implements json.Marshaler interface.
@@ -324,36 +268,17 @@ func (t *Transaction) MarshalJSON() ([]byte, error) {
 	tx := transactionJSON{
 		TxID:            t.Hash(),
 		Size:            io.GetVarSize(t),
-		Type:            t.Type,
 		Version:         t.Version,
 		Nonce:           t.Nonce,
 		Sender:          address.Uint160ToString(t.Sender),
 		ValidUntilBlock: t.ValidUntilBlock,
 		Attributes:      t.Attributes,
 		Cosigners:       t.Cosigners,
-		Inputs:          t.Inputs,
-		Outputs:         t.Outputs,
+		Script:          hex.EncodeToString(t.Script),
 		Scripts:         t.Scripts,
 		SystemFee:       t.SystemFee,
 		NetworkFee:      t.NetworkFee,
 	}
-	switch t.Type {
-	case ClaimType:
-		tx.Claims = t.Data.(*ClaimTX).Claims
-	case InvocationType:
-		tx.Script = hex.EncodeToString(t.Data.(*InvocationTX).Script)
-		tx.Gas = t.Data.(*InvocationTX).Gas
-	case RegisterType:
-		transaction := *t.Data.(*RegisterTX)
-		tx.Asset = &registeredAsset{
-			AssetType: transaction.AssetType,
-			Name:      json.RawMessage(transaction.Name),
-			Amount:    transaction.Amount,
-			Precision: transaction.Precision,
-			Owner:     transaction.Owner,
-			Admin:     address.Uint160ToString(transaction.Admin),
-		}
-	}
 	return json.Marshal(tx)
 }
 
@@ -363,14 +288,11 @@ func (t *Transaction) UnmarshalJSON(data []byte) error {
 	if err := json.Unmarshal(data, tx); err != nil {
 		return err
 	}
-	t.Type = tx.Type
 	t.Version = tx.Version
 	t.Nonce = tx.Nonce
 	t.ValidUntilBlock = tx.ValidUntilBlock
 	t.Attributes = tx.Attributes
 	t.Cosigners = tx.Cosigners
-	t.Inputs = tx.Inputs
-	t.Outputs = tx.Outputs
 	t.Scripts = tx.Scripts
 	t.SystemFee = tx.SystemFee
 	t.NetworkFee = tx.NetworkFee
@@ -379,38 +301,9 @@ func (t *Transaction) UnmarshalJSON(data []byte) error {
 		return errors.New("cannot unmarshal tx: bad sender")
 	}
 	t.Sender = sender
-	switch tx.Type {
-	case ClaimType:
-		t.Data = &ClaimTX{
-			Claims: tx.Claims,
-		}
-	case InvocationType:
-		bytes, err := hex.DecodeString(tx.Script)
-		if err != nil {
-			return err
-		}
-		t.Data = &InvocationTX{
-			Script:  bytes,
-			Gas:     tx.Gas,
-			Version: tx.Version,
-		}
-	case RegisterType:
-		admin, err := address.StringToUint160(tx.Asset.Admin)
-		if err != nil {
-			return err
-		}
-		t.Data = &RegisterTX{
-			AssetType: tx.Asset.AssetType,
-			Name:      string(tx.Asset.Name),
-			Amount:    tx.Asset.Amount,
-			Precision: tx.Asset.Precision,
-			Owner:     tx.Asset.Owner,
-			Admin:     admin,
-		}
-	case ContractType:
-		t.Data = &ContractTX{}
-	case IssueType:
-		t.Data = &IssueTX{}
+	t.Script, err = hex.DecodeString(tx.Script)
+	if err != nil {
+		return err
 	}
 	if t.Hash() != tx.TxID {
 		return errors.New("txid doesn't match transaction hash")
diff --git a/pkg/core/transaction/transaction_test.go b/pkg/core/transaction/transaction_test.go
index 78e0a9d94..bbc082d18 100644
--- a/pkg/core/transaction/transaction_test.go
+++ b/pkg/core/transaction/transaction_test.go
@@ -4,7 +4,6 @@ import (
 	"encoding/hex"
 	"testing"
 
-	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/nspcc-dev/neo-go/pkg/internal/testserdes"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/stretchr/testify/assert"
@@ -36,31 +35,6 @@ func TestWitnessEncodeDecode(t *testing.T) {
 
 // TODO NEO3.0: update binary
 /*
-func TestDecodeEncodeClaimTX(t *testing.T) {
-	tx := decodeTransaction(rawClaimTX, t)
-	assert.Equal(t, tx.Type, ClaimType)
-	assert.IsType(t, tx.Data, &ClaimTX{})
-	claimTX := tx.Data.(*ClaimTX)
-	assert.Equal(t, 4, len(claimTX.Claims))
-	assert.Equal(t, 0, len(tx.Attributes))
-	assert.Equal(t, 0, len(tx.Inputs))
-	assert.Equal(t, 1, len(tx.Outputs))
-	assert.Equal(t, "AQJseD8iBmCD4sgfHRhMahmoi9zvopG6yz", address.Uint160ToString(tx.Outputs[0].ScriptHash))
-	assert.Equal(t, "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7", tx.Outputs[0].AssetID.StringLE())
-	assert.Equal(t, tx.Outputs[0].Amount.String(), "0.06247739")
-	invoc := "40456349cec43053009accdb7781b0799c6b591c812768804ab0a0b56b5eae7a97694227fcd33e70899c075848b2cee8fae733faac6865b484d3f7df8949e2aadb"
-	verif := "2103945fae1ed3c31d778f149192b76734fcc951b400ba3598faa81ff92ebe477eacac"
-	assert.Equal(t, 1, len(tx.Scripts))
-	assert.Equal(t, invoc, hex.EncodeToString(tx.Scripts[0].InvocationScript))
-	assert.Equal(t, verif, hex.EncodeToString(tx.Scripts[0].VerificationScript))
-
-	data, err := testserdes.EncodeBinary(tx)
-	assert.NoError(t, err)
-	assert.Equal(t, rawClaimTX, hex.EncodeToString(data))
-
-	hash := "2c6a45547b3898318e400e541628990a07acb00f3b9a15a8e966ae49525304da"
-	assert.Equal(t, hash, tx.hash.StringLE())
-}
 
 func TestDecodeEncodeInvocationTX(t *testing.T) {
 	tx := decodeTransaction(rawInvocationTX, t)
@@ -87,119 +61,35 @@ func TestDecodeEncodeInvocationTX(t *testing.T) {
 }
 */
 
-func TestNewInvocationTX(t *testing.T) {
+func TestNew(t *testing.T) {
 	script := []byte{0x51}
-	tx := NewInvocationTX(script, 1)
-	txData := tx.Data.(*InvocationTX)
-	assert.Equal(t, InvocationType, tx.Type)
-	assert.Equal(t, tx.Version, txData.Version)
-	assert.Equal(t, script, txData.Script)
+	tx := New(script, 1)
+	assert.Equal(t, util.Fixed8(1), tx.SystemFee)
+	assert.Equal(t, script, tx.Script)
 	// Update hash fields to match tx2 that is gonna autoupdate them on decode.
 	_ = tx.Hash()
 	testserdes.EncodeDecodeBinary(t, tx, new(Transaction))
 }
 
-func TestEncodingTXWithNoData(t *testing.T) {
+func TestEncodingTXWithNoScript(t *testing.T) {
 	_, err := testserdes.EncodeBinary(new(Transaction))
 	require.Error(t, err)
 }
 
-func TestMarshalUnmarshalJSONContractTX(t *testing.T) {
-	tx := NewContractTX()
-	tx.Outputs = []Output{{
-		AssetID:    util.Uint256{1, 2, 3, 4},
-		Amount:     567,
-		ScriptHash: util.Uint160{7, 8, 9, 10},
-		Position:   13,
-	}}
-	tx.Scripts = []Witness{{
-		InvocationScript:   []byte{5, 3, 1},
-		VerificationScript: []byte{2, 4, 6},
-	}}
-	tx.Data = &ContractTX{}
-	testserdes.MarshalUnmarshalJSON(t, tx, new(Transaction))
-}
-
-func TestMarshalUnmarshalJSONClaimTX(t *testing.T) {
-	tx := &Transaction{
-		Type:    ClaimType,
-		Version: 0,
-		Data: &ClaimTX{Claims: []Input{
-			{
-				PrevHash:  util.Uint256{1, 2, 3, 4},
-				PrevIndex: uint16(56),
-			},
-		}},
-		Attributes: []Attribute{},
-		Inputs: []Input{{
-			PrevHash:  util.Uint256{5, 6, 7, 8},
-			PrevIndex: uint16(12),
-		}},
-		Outputs: []Output{{
-			AssetID:    util.Uint256{1, 2, 3},
-			Amount:     util.Fixed8FromInt64(1),
-			ScriptHash: util.Uint160{1, 2, 3},
-			Position:   0,
-		}},
-		Scripts: []Witness{},
-		Trimmed: false,
-	}
-
-	testserdes.MarshalUnmarshalJSON(t, tx, new(Transaction))
+func TestDecodingTXWithNoScript(t *testing.T) {
+	txBin, err := hex.DecodeString("00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
+	require.NoError(t, err)
+	err = testserdes.DecodeBinary(txBin, new(Transaction))
+	require.Error(t, err)
 }
 
 func TestMarshalUnmarshalJSONInvocationTX(t *testing.T) {
 	tx := &Transaction{
-		Type:    InvocationType,
-		Version: 3,
-		Data: &InvocationTX{
-			Script:  []byte{1, 2, 3, 4},
-			Gas:     util.Fixed8FromFloat(100),
-			Version: 3,
-		},
+		Version:    0,
+		Script:     []byte{1, 2, 3, 4},
 		Attributes: []Attribute{},
-		Inputs: []Input{{
-			PrevHash:  util.Uint256{5, 6, 7, 8},
-			PrevIndex: uint16(12),
-		}},
-		Outputs: []Output{{
-			AssetID:    util.Uint256{1, 2, 3},
-			Amount:     util.Fixed8FromInt64(1),
-			ScriptHash: util.Uint160{1, 2, 3},
-			Position:   0,
-		}},
-		Scripts: []Witness{},
-		Trimmed: false,
-	}
-
-	testserdes.MarshalUnmarshalJSON(t, tx, new(Transaction))
-}
-
-func TestMarshalUnmarshalJSONRegisterTX(t *testing.T) {
-	tx := &Transaction{
-		Type:    RegisterType,
-		Version: 5,
-		Data: &RegisterTX{
-			AssetType: 0,
-			Name:      `[{"lang":"zh-CN","name":"小蚁股"},{"lang":"en","name":"AntShare"}]`,
-			Amount:    1000000,
-			Precision: 0,
-			Owner:     keys.PublicKey{},
-			Admin:     util.Uint160{},
-		},
-		Attributes: []Attribute{},
-		Inputs: []Input{{
-			PrevHash:  util.Uint256{5, 6, 7, 8},
-			PrevIndex: uint16(12),
-		}},
-		Outputs: []Output{{
-			AssetID:    util.Uint256{1, 2, 3},
-			Amount:     util.Fixed8FromInt64(1),
-			ScriptHash: util.Uint160{1, 2, 3},
-			Position:   0,
-		}},
-		Scripts: []Witness{},
-		Trimmed: false,
+		Scripts:    []Witness{},
+		Trimmed:    false,
 	}
 
 	testserdes.MarshalUnmarshalJSON(t, tx, new(Transaction))
diff --git a/pkg/core/transaction/txer.go b/pkg/core/transaction/txer.go
deleted file mode 100644
index f48077f4d..000000000
--- a/pkg/core/transaction/txer.go
+++ /dev/null
@@ -1,9 +0,0 @@
-package transaction
-
-import "github.com/nspcc-dev/neo-go/pkg/io"
-
-// TXer is interface that can act as the underlying data of
-// a transaction.
-type TXer interface {
-	io.Serializable
-}
diff --git a/pkg/core/transaction/type.go b/pkg/core/transaction/type.go
deleted file mode 100644
index bf5d34420..000000000
--- a/pkg/core/transaction/type.go
+++ /dev/null
@@ -1,71 +0,0 @@
-package transaction
-
-import (
-	"strings"
-
-	"github.com/pkg/errors"
-)
-
-// TXType is the type of a transaction.
-type TXType uint8
-
-// Constants for all valid transaction types.
-const (
-	IssueType      TXType = 0x01
-	ClaimType      TXType = 0x02
-	RegisterType   TXType = 0x40
-	ContractType   TXType = 0x80
-	InvocationType TXType = 0xd1
-)
-
-// String implements the stringer interface.
-func (t TXType) String() string {
-	switch t {
-	case IssueType:
-		return "IssueTransaction"
-	case ClaimType:
-		return "ClaimTransaction"
-	case RegisterType:
-		return "RegisterTransaction"
-	case ContractType:
-		return "ContractTransaction"
-	case InvocationType:
-		return "InvocationTransaction"
-	default:
-		return "UnknownTransaction"
-	}
-}
-
-// MarshalJSON implements the json marshaller interface.
-func (t TXType) MarshalJSON() ([]byte, error) {
-	return []byte(`"` + t.String() + `"`), nil
-}
-
-// UnmarshalJSON implements the json.Unmarshaler interface.
-func (t *TXType) UnmarshalJSON(data []byte) error {
-	l := len(data)
-	if l < 2 || data[0] != '"' || data[l-1] != '"' {
-		return errors.New("wrong format")
-	}
-	var err error
-	*t, err = TXTypeFromString(string(data[1 : l-1]))
-	return err
-}
-
-// TXTypeFromString searches for TXType by string name.
-func TXTypeFromString(jsonString string) (TXType, error) {
-	switch jsonString = strings.TrimSpace(jsonString); jsonString {
-	case "IssueTransaction":
-		return IssueType, nil
-	case "ClaimTransaction":
-		return ClaimType, nil
-	case "RegisterTransaction":
-		return RegisterType, nil
-	case "ContractTransaction":
-		return ContractType, nil
-	case "InvocationTransaction":
-		return InvocationType, nil
-	default:
-		return 0, errors.New("unknown state")
-	}
-}
diff --git a/pkg/core/util.go b/pkg/core/util.go
index 643e101e2..52362bc9d 100644
--- a/pkg/core/util.go
+++ b/pkg/core/util.go
@@ -46,48 +46,18 @@ func createGenesisBlock(cfg config.ProtocolConfiguration) (*block.Block, error)
 	base := block.Base{
 		Version:       0,
 		PrevHash:      util.Uint256{},
-		Timestamp:     uint64(time.Date(2016, 7, 15, 15, 8, 21, 0, time.UTC).Unix()),
+		Timestamp:     uint64(time.Date(2016, 7, 15, 15, 8, 21, 0, time.UTC).Unix()) * 1000, // Milliseconds.
 		Index:         0,
 		NextConsensus: nextConsensus,
 		Script: transaction.Witness{
 			InvocationScript:   []byte{},
-			VerificationScript: []byte{byte(opcode.OLDPUSH1)},
-		},
-	}
-
-	rawScript, err := smartcontract.CreateMultiSigRedeemScript(
-		len(cfg.StandbyValidators)/2+1,
-		validators,
-	)
-	if err != nil {
-		return nil, err
-	}
-	scriptOut := hash.Hash160(rawScript)
-
-	issueTx := transaction.NewIssueTX()
-	// TODO NEO3.0: nonce should be constant to avoid variability of genesis block
-	issueTx.Nonce = 0
-	issueTx.Sender = hash.Hash160([]byte{byte(opcode.OLDPUSH1)})
-	issueTx.Outputs = []transaction.Output{
-		{
-			AssetID:    governingTokenTX.Hash(),
-			Amount:     governingTokenTX.Data.(*transaction.RegisterTX).Amount,
-			ScriptHash: scriptOut,
-		},
-	}
-	issueTx.Scripts = []transaction.Witness{
-		{
-			InvocationScript:   []byte{},
-			VerificationScript: []byte{byte(opcode.OLDPUSH1)},
+			VerificationScript: []byte{byte(opcode.PUSH1)},
 		},
 	}
 
 	b := &block.Block{
 		Base: base,
 		Transactions: []*transaction.Transaction{
-			&governingTokenTX,
-			&utilityTokenTX,
-			issueTx,
 			deployNativeContracts(),
 		},
 		ConsensusData: block.ConsensusData{
@@ -107,7 +77,7 @@ func deployNativeContracts() *transaction.Transaction {
 	buf := io.NewBufBinWriter()
 	emit.Syscall(buf.BinWriter, "Neo.Native.Deploy")
 	script := buf.Bytes()
-	tx := transaction.NewInvocationTX(script, 0)
+	tx := transaction.New(script, 0)
 	tx.Nonce = 0
 	tx.Sender = hash.Hash160([]byte{byte(opcode.PUSH1)})
 	tx.Scripts = []transaction.Witness{
@@ -119,45 +89,6 @@ func deployNativeContracts() *transaction.Transaction {
 	return tx
 }
 
-func init() {
-	admin := hash.Hash160([]byte{byte(opcode.OLDPUSH1)})
-	registerTX := &transaction.RegisterTX{
-		AssetType: transaction.GoverningToken,
-		Name:      "[{\"lang\":\"zh-CN\",\"name\":\"小蚁股\"},{\"lang\":\"en\",\"name\":\"AntShare\"}]",
-		Amount:    util.Fixed8FromInt64(100000000),
-		Precision: 0,
-		Admin:     admin,
-	}
-
-	governingTokenTX = *transaction.NewRegisterTX(registerTX)
-	// TODO NEO3.0: nonce should be constant to avoid variability of token hash
-	governingTokenTX.Nonce = 0
-	governingTokenTX.Sender = hash.Hash160([]byte{byte(opcode.OLDPUSH1)})
-
-	admin = hash.Hash160([]byte{0x00})
-	registerTX = &transaction.RegisterTX{
-		AssetType: transaction.UtilityToken,
-		Name:      "[{\"lang\":\"zh-CN\",\"name\":\"小蚁币\"},{\"lang\":\"en\",\"name\":\"AntCoin\"}]",
-		Amount:    calculateUtilityAmount(),
-		Precision: 8,
-		Admin:     admin,
-	}
-	utilityTokenTX = *transaction.NewRegisterTX(registerTX)
-	// TODO NEO3.0: nonce should be constant to avoid variability of token hash
-	utilityTokenTX.Nonce = 0
-	utilityTokenTX.Sender = hash.Hash160([]byte{byte(opcode.OLDPUSH1)})
-}
-
-// GoverningTokenID returns the governing token (NEO) hash.
-func GoverningTokenID() util.Uint256 {
-	return governingTokenTX.Hash()
-}
-
-// UtilityTokenID returns the utility token (GAS) hash.
-func UtilityTokenID() util.Uint256 {
-	return utilityTokenTX.Hash()
-}
-
 func getValidators(cfg config.ProtocolConfiguration) ([]*keys.PublicKey, error) {
 	validators := make([]*keys.PublicKey, len(cfg.StandbyValidators))
 	for i, pubKeyStr := range cfg.StandbyValidators {
diff --git a/pkg/core/util_test.go b/pkg/core/util_test.go
index 090bfb8ac..da254c162 100644
--- a/pkg/core/util_test.go
+++ b/pkg/core/util_test.go
@@ -20,7 +20,7 @@ func TestGenesisBlockMainNet(t *testing.T) {
 	// have been changed. Consequently, hash of the genesis block has been changed.
 	// Update expected genesis block hash for better times.
 	// Old hash is "d42561e3d30e15be6400b6df2f328e02d2bf6354c41dce433bc57687c82144bf"
-	expect := "1d4156d233220b893797a684fbb827bb2163b5042edd10653bbc1b2769adbb8d"
+	expect := "e4cfc549c87d4ab7b570c368d05853ffb70eb9ef0f7d9c7a2e6e9e5d713ebbf4"
 	assert.Equal(t, expect, block.Hash().StringLE())
 }
 
@@ -42,19 +42,3 @@ func TestGetConsensusAddressMainNet(t *testing.T) {
 	assert.Equal(t, consensusScript, script.String())
 	assert.Equal(t, consensusAddr, address.Uint160ToString(script))
 }
-
-func TestUtilityTokenTX(t *testing.T) {
-	//TODO: After we added Nonce field to transaction.Transaction, UtilityTockenTx hash
-	// has been changed. Update it for better times.
-	// Old hash is "602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7"
-	expect := "f882fb865bab84b99623f21eedd902286af7da8d8a4609d7acefce04c851dc1c"
-	assert.Equal(t, expect, UtilityTokenID().StringLE())
-}
-
-func TestGoverningTokenTX(t *testing.T) {
-	//TODO: After we added Nonce field to transaction.Transaction, GoveringTockenTx hash
-	// has been changed. Update it for better times.
-	// Old hash is "c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c9b"
-	expect := "1a5e0e3eac2abced7de9ee2de0820a5c85e63756fcdfc29b82fead86a7c07c78"
-	assert.Equal(t, expect, GoverningTokenID().StringLE())
-}
diff --git a/pkg/interop/asset/asset.go b/pkg/interop/asset/asset.go
deleted file mode 100644
index 01547f64c..000000000
--- a/pkg/interop/asset/asset.go
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
-Package asset provides functions to work with regular UTXO assets (like NEO or GAS).
-Mostly these are getters for Asset structure, but you can also create new assets
-and renew them (although it's recommended to use NEP-5 standard for new tokens).
-*/
-package asset
-
-// Asset represents NEO asset type that is used in interop functions, it's
-// an opaque data structure that you can get data from only using functions from
-// this package. It's similar in function to the Asset class in the Neo .net
-// framework. To be able to use it you either need to get an existing Asset via
-// blockchain.GetAsset function or create a new one via Create.
-type Asset struct{}
-
-// GetAssetID returns ID (256-bit ID of Register transaction for this asset in BE
-// representation) of the given asset. It uses `Neo.Asset.GetAssetId` syscall
-// internally.
-func GetAssetID(a Asset) []byte {
-	return nil
-}
-
-// GetAssetType returns type of the given asset as a byte value. The value
-// returned can be interpreted as a bit field with the following meaning:
-//     CreditFlag = 0x40
-//     DutyFlag = 0x80
-//     SystemShare = 0x00
-//     SystemCoin = 0x01
-//     Currency = 0x08
-//     Share = DutyFlag | 0x10
-//     Invoice = DutyFlag | 0x18
-//     Token = CreditFlag | 0x20
-// It uses `Neo.Asset.GetAssetType` syscall internally.
-func GetAssetType(a Asset) byte {
-	return 0x00
-}
-
-// GetAmount returns the total amount of the given asset as an integer
-// multiplied by 10⁸. This value is the maximum possible circulating quantity of
-// Asset. The function uses `Neo.Asset.GetAmount` syscall internally.
-func GetAmount(a Asset) int {
-	return 0
-}
-
-// GetAvailable returns the amount of Asset currently available on the
-// blockchain. It uses the same encoding as the result of GetAmount and its
-// value can never exceed the value returned by GetAmount. This function uses
-// `Neo.Asset.GetAvailable` syscall internally.
-func GetAvailable(a Asset) int {
-	return 0
-}
-
-// GetPrecision returns precision of the given Asset. It uses
-// `Neo.Asset.GetPrecision` syscall internally.
-func GetPrecision(a Asset) byte {
-	return 0x00
-}
-
-// GetOwner returns the owner of the given Asset. It's represented as a
-// serialized (in compressed form) public key (33 bytes long). This function
-// uses `Neo.Asset.GetOwner` syscall internally.
-func GetOwner(a Asset) []byte {
-	return nil
-}
-
-// GetAdmin returns the admin of the given Asset represented as a 160 bit hash
-// in BE form (contract script hash). Admin can modify attributes of this Asset.
-// This function uses `Neo.Asset.GetAdmin` syscall internally.
-func GetAdmin(a Asset) []byte {
-	return nil
-}
-
-// GetIssuer returns the issuer of the given Asset represented as a 160 bit hash
-// in BE form (contract script hash). Issuer can issue new tokens for this Asset.
-// This function uses `Neo.Asset.GetIssuer` syscall internally.
-func GetIssuer(a Asset) []byte {
-	return nil
-}
-
-// Create registers a new asset on the blockchain (similar to old Register
-// transaction). `assetType` parameter has the same set of possible values as
-// GetAssetType result, `amount` must be multiplied by 10⁸, `precision` limits
-// the smallest possible amount of new Asset to 10⁻ⁿ (where n is precision which
-// can't exceed 8), `owner` is a public key of the owner in compressed serialized
-// form (33 bytes), `admin` and `issuer` should be represented as 20-byte slices
-// storing 160-bit hash in BE form. Created Asset is set to expire in one year,
-// so you need to renew it in time. If successful, this function returns a new
-// Asset. It uses `Neo.Asset.Create` syscall internally.
-func Create(assetType byte, name string, amount int, precision byte, owner, admin, issuer []byte) Asset {
-	return Asset{}
-}
-
-// Renew renews (make available for use) existing asset by the specified number
-// of years. It returns the last block number when this asset will be active.
-// It uses `Neo.Asset.Renew` syscall internally.
-func Renew(asset Asset, years int) int {
-	return 0
-}
diff --git a/pkg/interop/blockchain/blockchain.go b/pkg/interop/blockchain/blockchain.go
index c38e4dd7d..bba276c7a 100644
--- a/pkg/interop/blockchain/blockchain.go
+++ b/pkg/interop/blockchain/blockchain.go
@@ -5,7 +5,6 @@ package blockchain
 
 import (
 	"github.com/nspcc-dev/neo-go/pkg/interop/account"
-	"github.com/nspcc-dev/neo-go/pkg/interop/asset"
 	"github.com/nspcc-dev/neo-go/pkg/interop/block"
 	"github.com/nspcc-dev/neo-go/pkg/interop/contract"
 	"github.com/nspcc-dev/neo-go/pkg/interop/header"
@@ -73,11 +72,3 @@ func GetAccount(scriptHash []byte) account.Account {
 func GetValidators() [][]byte {
 	return nil
 }
-
-// GetAsset returns asset found by the given asset ID (256 bit in BE format
-// represented as a slice of 32 bytes). Refer to the `asset` package for
-// possible uses of returned structure. This function uses
-// `Neo.Blockchain.GetAsset` syscall.
-func GetAsset(assetID []byte) asset.Asset {
-	return asset.Asset{}
-}
diff --git a/pkg/interop/input/input.go b/pkg/interop/input/input.go
deleted file mode 100644
index e577f2815..000000000
--- a/pkg/interop/input/input.go
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
-Package input provides functions dealing with transaction inputs.
-*/
-package input
-
-// Input is an opaque data structure that can only be created by
-// transaction.GetInputs and it represents transaction's input. It's similar
-// to Neo .net framework's TransactionInput.
-type Input struct{}
-
-// GetHash returns the hash stored in the given input (which also is a
-// transaction ID represented as 32 byte slice containing 256 bit BE value).
-// It uses `Neo.Input.GetHash` syscall.
-func GetHash(in Input) []byte {
-	return nil
-}
-
-// GetIndex returns the index stored in the given input (which is a
-// transaction's output number). It uses `Neo.Input.GetIndex` syscall.
-func GetIndex(in Input) int {
-	return 0
-}
diff --git a/pkg/interop/output/output.go b/pkg/interop/output/output.go
deleted file mode 100644
index 01ad0c828..000000000
--- a/pkg/interop/output/output.go
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
-Package output provides functions dealing with transaction outputs.
-*/
-package output
-
-// Output is an opaque data structure that can only be created by
-// transaction.GetOutputs and it represents transaction's output. It's similar
-// to Neo .net framework's TransactionOutput.
-type Output struct{}
-
-// GetAssetID returns the asset ID (256 bit BE value in a 32 byte slice) of the
-// given output. It uses `Neo.Output.GetAssetId` syscall.
-func GetAssetID(out Output) []byte {
-	return nil
-}
-
-// GetValue returns the value (asset quantity) of the given output. It uses
-// `Neo.Output.GetValue` syscall.
-func GetValue(out Output) int {
-	return 0
-}
-
-// GetScriptHash returns the script hash (receiver's address represented as
-// 20 byte slice containing 160 bit BE value) of the given output. It uses
-// `Neo.Output.GetScriptHash` syscall.
-func GetScriptHash(out Output) []byte {
-	return nil
-}
diff --git a/pkg/interop/transaction/transaction.go b/pkg/interop/transaction/transaction.go
index e354d7baf..fc44f37c4 100644
--- a/pkg/interop/transaction/transaction.go
+++ b/pkg/interop/transaction/transaction.go
@@ -5,8 +5,6 @@ package transaction
 
 import (
 	"github.com/nspcc-dev/neo-go/pkg/interop/attribute"
-	"github.com/nspcc-dev/neo-go/pkg/interop/input"
-	"github.com/nspcc-dev/neo-go/pkg/interop/output"
 	"github.com/nspcc-dev/neo-go/pkg/interop/witness"
 )
 
@@ -21,22 +19,6 @@ func GetHash(t Transaction) []byte {
 	return nil
 }
 
-// GetType returns the type of the given transaction. Possible values:
-//     MinerTransaction      = 0x00
-//     IssueTransaction      = 0x01
-//     ClaimTransaction      = 0x02
-//     EnrollmentTransaction = 0x20
-//     RegisterTransaction   = 0x40
-//     ContractTransaction   = 0x80
-//     StateType             = 0x90
-//     AgencyTransaction     = 0xb0
-//     PublishTransaction    = 0xd0
-//     InvocationTransaction = 0xd1
-// It uses `Neo.Transaction.GetType` syscall.
-func GetType(t Transaction) byte {
-	return 0x00
-}
-
 // GetAttributes returns a slice of attributes for agiven transaction. Refer to
 // attribute package on how to use them. This function uses
 // `Neo.Transaction.GetAttributes` syscall.
@@ -44,42 +26,6 @@ func GetAttributes(t Transaction) []attribute.Attribute {
 	return []attribute.Attribute{}
 }
 
-// GetReferences returns a slice of references for a given Transaction. Elements
-// of this slice can be casted to any of input.Input or output.Output, depending
-// on which information you're interested in (as reference technically contains
-// both input and corresponding output), refer to input and output package on
-// how to use them. This function uses `Neo.Transaction.GetReferences` syscall.
-func GetReferences(t Transaction) []interface{} {
-	return []interface{}{}
-}
-
-// GetUnspentCoins returns a slice of not yet spent ouputs of a given transaction.
-// This function uses `Neo.Transaction.GetUnspentCoint` syscall.
-func GetUnspentCoins(t Transaction) []output.Output {
-	return []output.Output{}
-}
-
-// GetInputs returns a slice of inputs of a given Transaction. Refer to input
-// package on how to use them. This function uses `Neo.Transaction.GetInputs`
-// syscall.
-func GetInputs(t Transaction) []input.Input {
-	return []input.Input{}
-}
-
-// GetOutputs returns a slice of outputs of a given Transaction. Refer to output
-// package on how to use them. This function uses `Neo.Transaction.GetOutputs`
-// syscall.
-func GetOutputs(t Transaction) []output.Output {
-	return []output.Output{}
-}
-
-// GetScript returns the script stored in a given Invocation transaction.
-// Calling it for any other Transaction type would lead to failure. It uses
-// `Neo.InvocationTransaction.GetScript` syscall.
-func GetScript(t Transaction) []byte {
-	return nil
-}
-
 // GetWitnesses returns a slice of witnesses of a given Transaction. Refer to
 // witness package on how to use them. This function uses
 // `Neo.Transaction.GetWitnesses` syscall.
diff --git a/pkg/network/helper_test.go b/pkg/network/helper_test.go
index b09f5e885..fe60dac6d 100644
--- a/pkg/network/helper_test.go
+++ b/pkg/network/helper_test.go
@@ -25,17 +25,13 @@ type testChain struct {
 	blockheight uint32
 }
 
-func (chain testChain) ApplyPolicyToTxSet([]mempool.TxWithFee) []mempool.TxWithFee {
+func (chain testChain) ApplyPolicyToTxSet([]*transaction.Transaction) []*transaction.Transaction {
 	panic("TODO")
 }
 func (chain testChain) GetConfig() config.ProtocolConfiguration {
 	panic("TODO")
 }
-func (chain testChain) CalculateClaimable(util.Fixed8, uint32, uint32) (util.Fixed8, util.Fixed8, error) {
-	panic("TODO")
-}
-
-func (chain testChain) References(t *transaction.Transaction) ([]transaction.InOut, error) {
+func (chain testChain) CalculateClaimable(int64, uint32, uint32) util.Fixed8 {
 	panic("TODO")
 }
 
@@ -77,9 +73,6 @@ func (chain testChain) GetHeader(hash util.Uint256) (*block.Header, error) {
 	panic("TODO")
 }
 
-func (chain testChain) GetAssetState(util.Uint256) *state.Asset {
-	panic("TODO")
-}
 func (chain testChain) GetAccountState(util.Uint160) *state.Account {
 	panic("TODO")
 }
@@ -126,10 +119,6 @@ func (chain testChain) GetTransaction(util.Uint256) (*transaction.Transaction, u
 	panic("TODO")
 }
 
-func (chain testChain) GetUnspentCoinState(util.Uint256) *state.UnspentCoin {
-	panic("TODO")
-}
-
 func (chain testChain) GetMemPool() *mempool.Pool {
 	panic("TODO")
 }
@@ -138,6 +127,10 @@ func (chain testChain) IsLowPriority(util.Fixed8) bool {
 	panic("TODO")
 }
 
+func (chain testChain) GetGoverningTokenBalance(acc util.Uint160) (util.Fixed8, uint32) {
+	panic("TODO")
+}
+
 func (chain testChain) GetUtilityTokenBalance(uint160 util.Uint160) util.Fixed8 {
 	panic("TODO")
 }
diff --git a/pkg/rpc/client/client.go b/pkg/rpc/client/client.go
index d5ad26e7b..1f2c1cad2 100644
--- a/pkg/rpc/client/client.go
+++ b/pkg/rpc/client/client.go
@@ -11,12 +11,9 @@ import (
 	"sync"
 	"time"
 
-	"github.com/nspcc-dev/neo-go/pkg/core/state"
-	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/nspcc-dev/neo-go/pkg/rpc/request"
 	"github.com/nspcc-dev/neo-go/pkg/rpc/response"
-	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/pkg/errors"
 )
 
@@ -45,13 +42,6 @@ type Client struct {
 // All values are optional. If any duration is not specified
 // a default of 4 seconds will be used.
 type Options struct {
-	// Balancer is an implementation of request.BalanceGetter interface,
-	// if not set then the default Client's implementation will be used, but
-	// it relies on server support for `getunspents` RPC call which is
-	// standard for neo-go, but only implemented as a plugin for C# node. So
-	// you can override it here to use NeoScanServer for example.
-	Balancer request.BalanceGetter
-
 	// Cert is a client-side certificate, it doesn't work at the moment along
 	// with the other two options below.
 	Cert           string
@@ -107,9 +97,6 @@ func New(ctx context.Context, endpoint string, opts Options) (*Client, error) {
 		wifMu:    new(sync.Mutex),
 		endpoint: url,
 	}
-	if opts.Balancer == nil {
-		opts.Balancer = cl
-	}
 	cl.opts = opts
 	cl.requestF = cl.makeHTTPRequest
 	return cl, nil
@@ -140,27 +127,6 @@ func (c *Client) SetWIF(wif string) error {
 	return nil
 }
 
-// CalculateInputs implements request.BalanceGetter interface and returns inputs
-// array for the specified amount of given asset belonging to specified address.
-// This implementation uses GetUnspents JSON-RPC call internally, so make sure
-// your RPC server supports that.
-func (c *Client) CalculateInputs(address string, asset util.Uint256, cost util.Fixed8) ([]transaction.Input, util.Fixed8, error) {
-	var utxos state.UnspentBalances
-
-	resp, err := c.GetUnspents(address)
-	if err != nil {
-		return nil, util.Fixed8(0), errors.Wrapf(err, "cannot get balance for address %v", address)
-	}
-	for _, ubi := range resp.Balance {
-		if asset.Equals(ubi.AssetHash) {
-			utxos = ubi.Unspents
-			break
-		}
-	}
-	return unspentsToInputs(utxos, cost)
-
-}
-
 func (c *Client) performRequest(method string, p request.RawParams, v interface{}) error {
 	var r = request.Raw{
 		JSONRPC:   request.JSONRPCVersion,
diff --git a/pkg/rpc/client/doc.go b/pkg/rpc/client/doc.go
index c21d3ebf4..24c430d4e 100644
--- a/pkg/rpc/client/doc.go
+++ b/pkg/rpc/client/doc.go
@@ -18,16 +18,13 @@ TODO:
 
 Supported methods
 
-	getaccountstate
 	getapplicationlog
-	getassetstate
 	getbestblockhash
 	getblock
 	getblockcount
 	getblockhash
 	getblockheader
 	getblocksysfee
-	getclaimable
 	getconnectioncount
 	getcontractstate
 	getnep5balances
@@ -37,9 +34,7 @@ Supported methods
 	getrawtransaction
 	getstorage
 	gettransactionheight
-	gettxout
-	getunclaimed
-	getunspents
+	getunclaimedgas
 	getvalidators
 	getversion
 	invoke
@@ -56,7 +51,6 @@ Unsupported methods
 	getbalance
 	getmetricblocktimestamp
 	getnewaddress
-	getunclaimedgas
 	getwalletheight
 	importprivkey
 	listaddress
diff --git a/pkg/rpc/client/doc_test.go b/pkg/rpc/client/doc_test.go
index b7f3e5f00..496ca8d4d 100644
--- a/pkg/rpc/client/doc_test.go
+++ b/pkg/rpc/client/doc_test.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
 	"github.com/nspcc-dev/neo-go/pkg/rpc/client"
 )
 
@@ -23,11 +24,16 @@ func Example() {
 		os.Exit(1)
 	}
 
-	resp, err := c.GetAccountState("ATySFJAbLW7QHsZGHScLhxq6EyNBxx3eFP")
+	addr, err := address.StringToUint160("ATySFJAbLW7QHsZGHScLhxq6EyNBxx3eFP")
 	if err != nil {
 		fmt.Println(err)
 		os.Exit(1)
 	}
-	fmt.Println(resp.ScriptHash)
+	resp, err := c.GetNEP5Balances(addr)
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+	fmt.Println(resp.Address)
 	fmt.Println(resp.Balances)
 }
diff --git a/pkg/rpc/client/neoscan.go b/pkg/rpc/client/neoscan.go
deleted file mode 100644
index 011eb9c67..000000000
--- a/pkg/rpc/client/neoscan.go
+++ /dev/null
@@ -1,125 +0,0 @@
-package client
-
-import (
-	"encoding/json"
-	"errors"
-	"net/http"
-	"sort"
-
-	"github.com/nspcc-dev/neo-go/pkg/core/state"
-	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
-	"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-	errs "github.com/pkg/errors"
-)
-
-/*
-	Definition of types, helper functions and variables
-	required for calculation of transaction inputs using
-	NeoScan API.
-*/
-
-type (
-	// NeoScanServer stores NEOSCAN URL and API path.
-	NeoScanServer struct {
-		URL  string // "protocol://host:port/"
-		Path string // path to API endpoint without wallet address
-	}
-
-	// Unspent stores Unspents per asset
-	Unspent struct {
-		Unspent state.UnspentBalances
-		Asset   string      // "NEO" / "GAS"
-		Amount  util.Fixed8 // total unspent of this asset
-	}
-
-	// NeoScanBalance is a struct of NeoScan response to 'get_balance' request
-	NeoScanBalance struct {
-		Balance []*Unspent
-		Address string
-	}
-)
-
-// GetBalance performs a request to get balance for the address specified.
-func (s NeoScanServer) GetBalance(address string) ([]*Unspent, error) {
-	var (
-		err        error
-		req        *http.Request
-		res        *http.Response
-		balance    NeoScanBalance
-		client     = http.Client{}
-		balanceURL = s.URL + s.Path
-	)
-
-	if req, err = http.NewRequest(http.MethodGet, balanceURL+address, nil); err != nil {
-		return nil, errs.Wrap(err, "Failed to compose HTTP request")
-	}
-
-	if res, err = client.Do(req); err != nil {
-		return nil, errs.Wrap(err, "Failed to perform HTTP request")
-	}
-
-	defer res.Body.Close()
-
-	if err = json.NewDecoder(res.Body).Decode(&balance); err != nil {
-		return nil, errs.Wrap(err, "Failed to decode HTTP response")
-	}
-	return balance.Balance, nil
-}
-
-func filterSpecificAsset(asset string, balance []*Unspent, assetBalance *Unspent) {
-	for _, us := range balance {
-		if us.Asset == asset {
-			assetBalance.Unspent = us.Unspent
-			assetBalance.Asset = us.Asset
-			assetBalance.Amount = us.Amount
-			return
-		}
-	}
-}
-
-// CalculateInputs creates input transactions for the specified amount of given asset belonging to specified address.
-func (s NeoScanServer) CalculateInputs(address string, assetIDUint util.Uint256, cost util.Fixed8) ([]transaction.Input, util.Fixed8, error) {
-	var (
-		err          error
-		us           []*Unspent
-		assetUnspent Unspent
-		assetID      = result.GlobalAssets[assetIDUint.StringLE()]
-	)
-	if us, err = s.GetBalance(address); err != nil {
-		return nil, util.Fixed8(0), errs.Wrapf(err, "Cannot get balance for address %v", address)
-	}
-	filterSpecificAsset(assetID, us, &assetUnspent)
-	return unspentsToInputs(assetUnspent.Unspent, cost)
-}
-
-// unspentsToInputs uses UnspentBalances to create a slice of inputs for a new
-// transcation containing the required amount of asset.
-func unspentsToInputs(utxos state.UnspentBalances, required util.Fixed8) ([]transaction.Input, util.Fixed8, error) {
-	var (
-		num, i   uint16
-		selected = util.Fixed8(0)
-	)
-	sort.Sort(utxos)
-
-	for _, us := range utxos {
-		if selected >= required {
-			break
-		}
-		selected += us.Value
-		num++
-	}
-	if selected < required {
-		return nil, util.Fixed8(0), errors.New("cannot compose inputs for transaction; check sender balance")
-	}
-
-	inputs := make([]transaction.Input, 0, num)
-	for i = 0; i < num; i++ {
-		inputs = append(inputs, transaction.Input{
-			PrevHash:  utxos[i].Tx,
-			PrevIndex: utxos[i].Index,
-		})
-	}
-
-	return inputs, selected, nil
-}
diff --git a/pkg/rpc/client/nep5.go b/pkg/rpc/client/nep5.go
index 06302e8eb..95fcf83ec 100644
--- a/pkg/rpc/client/nep5.go
+++ b/pkg/rpc/client/nep5.go
@@ -5,11 +5,9 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/nspcc-dev/neo-go/pkg/core"
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
 	"github.com/nspcc-dev/neo-go/pkg/io"
-	"github.com/nspcc-dev/neo-go/pkg/rpc/request"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
@@ -94,22 +92,23 @@ func (c *Client) NEP5TokenInfo(tokenHash util.Uint160) (*wallet.Token, error) {
 	return wallet.NewToken(tokenHash, name, symbol, decimals), nil
 }
 
-// TransferNEP5 creates an invocation transaction that invokes 'transfer' method
-// on a given token to move specified amount of NEP5 assets (in FixedN format
-// using contract's number of decimals) to given account.
-func (c *Client) TransferNEP5(acc *wallet.Account, to util.Uint160, token *wallet.Token, amount int64, gas util.Fixed8) (util.Uint256, error) {
+// CreateNEP5TransferTx creates an invocation transaction for the 'transfer'
+// method of a given contract (token) to move specified amount of NEP5 assets
+// (in FixedN format using contract's number of decimals) to given account and
+// returns it. The returned transaction is not signed.
+func (c *Client) CreateNEP5TransferTx(acc *wallet.Account, to util.Uint160, token util.Uint160, amount int64, gas util.Fixed8) (*transaction.Transaction, error) {
 	from, err := address.StringToUint160(acc.Address)
 	if err != nil {
-		return util.Uint256{}, fmt.Errorf("bad account address: %v", err)
+		return nil, fmt.Errorf("bad account address: %v", err)
 	}
 	// Note: we don't use invoke function here because it requires
 	// 2 round trips instead of one.
 	w := io.NewBufBinWriter()
-	emit.AppCallWithOperationAndArgs(w.BinWriter, token.Hash, "transfer", from, to, amount)
+	emit.AppCallWithOperationAndArgs(w.BinWriter, token, "transfer", from, to, amount)
 	emit.Opcode(w.BinWriter, opcode.ASSERT)
 
 	script := w.Bytes()
-	tx := transaction.NewInvocationTX(script, gas)
+	tx := transaction.New(script, gas)
 	tx.Sender = from
 	tx.Cosigners = []transaction.Cosigner{
 		{
@@ -122,11 +121,11 @@ func (c *Client) TransferNEP5(acc *wallet.Account, to util.Uint160, token *walle
 
 	result, err := c.InvokeScript(hex.EncodeToString(script))
 	if err != nil {
-		return util.Uint256{}, fmt.Errorf("can't add system fee to transaction: %v", err)
+		return nil, fmt.Errorf("can't add system fee to transaction: %v", err)
 	}
 	gasConsumed, err := util.Fixed8FromString(result.GasConsumed)
 	if err != nil {
-		return util.Uint256{}, fmt.Errorf("can't add system fee to transaction: %v", err)
+		return nil, fmt.Errorf("can't add system fee to transaction: %v", err)
 	}
 	if gasConsumed > 0 {
 		tx.SystemFee = gasConsumed
@@ -134,16 +133,25 @@ func (c *Client) TransferNEP5(acc *wallet.Account, to util.Uint160, token *walle
 
 	tx.ValidUntilBlock, err = c.CalculateValidUntilBlock()
 	if err != nil {
-		return util.Uint256{}, fmt.Errorf("can't calculate validUntilBlock: %v", err)
-	}
-
-	if err := request.AddInputsAndUnspentsToTx(tx, acc.Address, core.UtilityTokenID(), gas, c); err != nil {
-		return util.Uint256{}, fmt.Errorf("can't add GAS to transaction: %v", err)
+		return nil, fmt.Errorf("can't calculate validUntilBlock: %v", err)
 	}
 
 	err = c.AddNetworkFee(tx, acc)
 	if err != nil {
-		return util.Uint256{}, fmt.Errorf("can't add network fee to transaction: %v", err)
+		return nil, fmt.Errorf("can't add network fee to transaction: %v", err)
+	}
+
+	return tx, nil
+}
+
+// TransferNEP5 creates an invocation transaction that invokes 'transfer' method
+// on a given token to move specified amount of NEP5 assets (in FixedN format
+// using contract's number of decimals) to given account and sends it to the
+// network returning just a hash of it.
+func (c *Client) TransferNEP5(acc *wallet.Account, to util.Uint160, token util.Uint160, amount int64, gas util.Fixed8) (util.Uint256, error) {
+	tx, err := c.CreateNEP5TransferTx(acc, to, token, amount, gas)
+	if err != nil {
+		return util.Uint256{}, err
 	}
 
 	if err := acc.SignTx(tx); err != nil {
diff --git a/pkg/rpc/client/rpc.go b/pkg/rpc/client/rpc.go
index e0b8326bd..d0d572e85 100644
--- a/pkg/rpc/client/rpc.go
+++ b/pkg/rpc/client/rpc.go
@@ -2,6 +2,7 @@ package client
 
 import (
 	"encoding/hex"
+	"strconv"
 
 	"github.com/nspcc-dev/neo-go/pkg/core"
 	"github.com/nspcc-dev/neo-go/pkg/core/block"
@@ -16,18 +17,6 @@ import (
 	"github.com/pkg/errors"
 )
 
-// GetAccountState returns detailed information about a NEO account.
-func (c *Client) GetAccountState(address string) (*result.AccountState, error) {
-	var (
-		params = request.NewRawParams(address)
-		resp   = &result.AccountState{}
-	)
-	if err := c.performRequest("getaccountstate", params, resp); err != nil {
-		return nil, err
-	}
-	return resp, nil
-}
-
 // GetApplicationLog returns the contract log based on the specified txid.
 func (c *Client) GetApplicationLog(hash util.Uint256) (*result.ApplicationLog, error) {
 	var (
@@ -40,18 +29,6 @@ func (c *Client) GetApplicationLog(hash util.Uint256) (*result.ApplicationLog, e
 	return resp, nil
 }
 
-// GetAssetState queries the asset information, based on the specified asset number.
-func (c *Client) GetAssetState(hash util.Uint256) (*result.AssetState, error) {
-	var (
-		params = request.NewRawParams(hash.StringLE())
-		resp   = &result.AssetState{}
-	)
-	if err := c.performRequest("getassetstate", params, resp); err != nil {
-		return nil, err
-	}
-	return resp, nil
-}
-
 // GetBestBlockHash returns the hash of the tallest block in the main chain.
 func (c *Client) GetBestBlockHash() (util.Uint256, error) {
 	var resp = util.Uint256{}
@@ -187,16 +164,6 @@ func (c *Client) GetBlockSysFee(index uint32) (util.Fixed8, error) {
 	return resp, nil
 }
 
-// GetClaimable returns tx outputs which can be claimed.
-func (c *Client) GetClaimable(address string) (*result.ClaimableInfo, error) {
-	params := request.NewRawParams(address)
-	resp := new(result.ClaimableInfo)
-	if err := c.performRequest("getclaimable", params, resp); err != nil {
-		return nil, err
-	}
-	return resp, nil
-}
-
 // GetConnectionCount returns the current number of connections for the node.
 func (c *Client) GetConnectionCount() (int, error) {
 	var (
@@ -329,41 +296,20 @@ func (c *Client) GetTransactionHeight(hash util.Uint256) (uint32, error) {
 	return resp, nil
 }
 
-// GetTxOut returns the corresponding unspent transaction output information (returned change),
-// based on the specified hash and index.
-func (c *Client) GetTxOut(hash util.Uint256, num int) (*result.TransactionOutput, error) {
-	var (
-		params = request.NewRawParams(hash.StringLE(), num)
-		resp   = &result.TransactionOutput{}
-	)
-	if err := c.performRequest("gettxout", params, resp); err != nil {
-		return resp, err
-	}
-	return resp, nil
-}
-
-// GetUnclaimed returns unclaimed GAS amount of the specified address.
-func (c *Client) GetUnclaimed(address string) (*result.Unclaimed, error) {
+// GetUnclaimedGas returns unclaimed GAS amount for the specified address.
+func (c *Client) GetUnclaimedGas(address string) (util.Fixed8, error) {
 	var (
 		params = request.NewRawParams(address)
-		resp   = &result.Unclaimed{}
+		resp   string
 	)
-	if err := c.performRequest("getunclaimed", params, resp); err != nil {
-		return nil, err
+	if err := c.performRequest("getunclaimedgas", params, &resp); err != nil {
+		return 0, err
 	}
-	return resp, nil
-}
-
-// GetUnspents returns UTXOs for the given NEO account.
-func (c *Client) GetUnspents(address string) (*result.Unspents, error) {
-	var (
-		params = request.NewRawParams(address)
-		resp   = &result.Unspents{}
-	)
-	if err := c.performRequest("getunspents", params, resp); err != nil {
-		return nil, err
+	i, err := strconv.ParseInt(resp, 10, 64)
+	if err != nil {
+		return 0, err
 	}
-	return resp, nil
+	return util.Fixed8(i), nil
 }
 
 // GetValidators returns the current NEO consensus nodes information and voting status.
@@ -470,39 +416,6 @@ func (c *Client) SubmitBlock(b block.Block) error {
 	return nil
 }
 
-// TransferAsset sends an amount of specific asset to a given address.
-// This call requires open wallet. (`wif` key in client struct.)
-// If response.Result is `true` then transaction was formed correctly and was written in blockchain.
-func (c *Client) TransferAsset(asset util.Uint256, address string, amount util.Fixed8) (util.Uint256, error) {
-	var (
-		err      error
-		rawTx    *transaction.Transaction
-		txParams = request.ContractTxParams{
-			AssetID:  asset,
-			Address:  address,
-			Value:    amount,
-			WIF:      c.WIF(),
-			Balancer: c.opts.Balancer,
-		}
-		resp util.Uint256
-	)
-
-	if rawTx, err = request.CreateRawContractTransaction(txParams); err != nil {
-		return resp, errors.Wrap(err, "failed to create raw transaction")
-	}
-
-	validUntilBlock, err := c.CalculateValidUntilBlock()
-	if err != nil {
-		return resp, errors.Wrap(err, "failed to add validUntilBlock to raw transaction")
-	}
-	rawTx.ValidUntilBlock = validUntilBlock
-
-	if err = c.SendRawTransaction(rawTx); err != nil {
-		return resp, errors.Wrap(err, "failed to send raw transaction")
-	}
-	return rawTx.Hash(), nil
-}
-
 // SignAndPushInvocationTx signs and pushes given script as an invocation
 // transaction  using given wif to sign it and spending the amount of gas
 // specified. It returns a hash of the invocation transaction and an error.
@@ -510,7 +423,7 @@ func (c *Client) SignAndPushInvocationTx(script []byte, acc *wallet.Account, sys
 	var txHash util.Uint256
 	var err error
 
-	tx := transaction.NewInvocationTX(script, sysfee)
+	tx := transaction.New(script, sysfee)
 	tx.SystemFee = sysfee
 
 	validUntilBlock, err := c.CalculateValidUntilBlock()
@@ -525,14 +438,6 @@ func (c *Client) SignAndPushInvocationTx(script []byte, acc *wallet.Account, sys
 	}
 	tx.Sender = addr
 
-	gas := sysfee + netfee
-
-	if gas > 0 {
-		if err = request.AddInputsAndUnspentsToTx(tx, acc.Address, core.UtilityTokenID(), gas, c); err != nil {
-			return txHash, errors.Wrap(err, "failed to add inputs and unspents to transaction")
-		}
-	}
-
 	err = c.AddNetworkFee(tx, acc)
 	if err != nil {
 		return txHash, errors.Wrapf(err, "failed to add network fee")
diff --git a/pkg/rpc/client/rpc_test.go b/pkg/rpc/client/rpc_test.go
index 31a7fe3cc..3600daf45 100644
--- a/pkg/rpc/client/rpc_test.go
+++ b/pkg/rpc/client/rpc_test.go
@@ -3,7 +3,6 @@ package client
 import (
 	"context"
 	"encoding/hex"
-	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"strings"
@@ -11,14 +10,15 @@ import (
 	"time"
 
 	"github.com/gorilla/websocket"
-	"github.com/nspcc-dev/neo-go/pkg/core"
 	"github.com/nspcc-dev/neo-go/pkg/core/block"
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
+	"github.com/nspcc-dev/neo-go/pkg/internal/testserdes"
 	"github.com/nspcc-dev/neo-go/pkg/rpc/request"
 	"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
 	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -31,113 +31,60 @@ type rpcClientTestCase struct {
 	check          func(t *testing.T, c *Client, result interface{})
 }
 
-// getResultBlock202 returns data for block number 1 which is used by several tests.
-func getResultBlock202() *result.Block {
-	nextBlockHash, err := util.Uint256DecodeStringLE("13283c93aec07dc90be3ddd65e2de15e9212f1b3205303f688d6df85129f6b22")
-	if err != nil {
-		panic(err)
-	}
-	prevBlockHash, err := util.Uint256DecodeStringLE("93b540424c1173e487a47582a652686b2885f959ffd895b30e184842403990ef")
-	if err != nil {
-		panic(err)
-	}
-	merkleRoot, err := util.Uint256DecodeStringLE("b8e923148dede20901d6fb225579f6d430cc58f24461d1b0f860ee32abbfcc8d")
-	if err != nil {
-		panic(err)
-	}
-	invScript, err := hex.DecodeString("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")
-	if err != nil {
-		panic(err)
-	}
-	verifScript, err := hex.DecodeString("130c2102103a7f7dd016558597f7960d27c516a4394fd968b9e65155eb4b013e4040406e0c2102a7bc55fe8684e0119768d104ba30795bdcc86619e864add26156723ed185cd620c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20c2103d90c07df63e690ce77912e10ab51acc944b66860237b608c4f8f8309e71ee699140b413073b3bb")
-	if err != nil {
-		panic(err)
-	}
-	sender, err := address.StringToUint160("ALHF9wsXZVEuCGgmDA6ZNsCLtrb4A1g4yG")
-	if err != nil {
-		panic(err)
-	}
-	txInvScript, err := hex.DecodeString("0c402caebbee911a1f159aa05ab40093d086090a817e837f3f87e8b3e47f6b083649137770f6dda0349ddd611bc47402aca457a89b3b7b0076307ab6a47fd57048eb")
-	if err != nil {
-		panic(err)
-	}
-	txVerifScript, err := hex.DecodeString("0c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20b410a906ad4")
-	if err != nil {
-		panic(err)
-	}
-	vin, err := util.Uint256DecodeStringLE("33e045101301854a0e07ff96a92ca1ba9b23c19501f1b7eb15ae9eea07b5f370")
-	if err != nil {
-		panic(err)
-	}
-	outAddress, err := address.StringToUint160("ALHF9wsXZVEuCGgmDA6ZNsCLtrb4A1g4yG")
-	if err != nil {
-		panic(err)
-	}
-	tx := transaction.NewContractTX()
-	tx.Nonce = 3
-	tx.ValidUntilBlock = 1200
-	tx.Sender = sender
-	tx.Scripts = []transaction.Witness{
-		{
-			InvocationScript:   txInvScript,
-			VerificationScript: txVerifScript,
-		},
-	}
-	tx.Inputs = []transaction.Input{
-		{
-			PrevHash:  vin,
-			PrevIndex: 0,
-		},
-	}
-	tx.Outputs = []transaction.Output{
-		{
-			AssetID:    core.GoverningTokenID(),
-			Amount:     util.Fixed8FromInt64(99999000),
-			ScriptHash: outAddress,
-			Position:   0,
-		},
-	}
+const hexB1 = "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"
 
-	var nonce uint64
-	i, err := fmt.Sscanf("0000000000000457", "%016x", &nonce)
-	if i != 1 {
-		panic("can't decode nonce")
-	}
+const hexTxMoveNeo = "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"
+
+const b1Verbose = `{"id":5,"jsonrpc":"2.0","result":{"size":1681,"nextblockhash":"0xf2afe371a27c9dbac4f4a8ad8eba750898b7c04aa298e64fe9e488e947976045","confirmations":6,"hash":"0xbd178d8d4a28ec082c034f817ce2423221281a31e7e00014dbf732c4053033d2","version":0,"previousblockhash":"0x8f3b2c628ae86f037a735ec477932c81b8ae54b7abb3dd58cd87c97f90e762e8","merkleroot":"0x95831633b36588acf0e69f37f73d1a84cb0c5329790e837072206ba8842e1f30","time":1591366176001,"index":1,"nextconsensus":"AXSvJVzydxXuL9da4GVwK25zdesCrVKkHL","witnesses":[{"invocation":"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","verification":"130c2102103a7f7dd016558597f7960d27c516a4394fd968b9e65155eb4b013e4040406e0c2102a7bc55fe8684e0119768d104ba30795bdcc86619e864add26156723ed185cd620c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20c2103d90c07df63e690ce77912e10ab51acc944b66860237b608c4f8f8309e71ee699140b413073b3bb"}],"consensus_data":{"primary":0,"nonce":"0000000000000457"},"tx":[{"txid":"0x8af9ccb8e7e0f0a73e77b78dc52750e77c50f78b09ecc2f0669c0b459cc7dd89","size":575,"version":0,"nonce":2,"sender":"AXSvJVzydxXuL9da4GVwK25zdesCrVKkHL","sys_fee":"0","net_fee":"0.0087635","valid_until_block":1200,"attributes":[],"cosigners":[{"account":"0x4138145d67638db97b402ee0b6751ef16253ecab","scopes":1}],"script":"0218ddf5050c14316e851039019d39dfc2c37d6c3fee19fd5809870c14abec5362f11e75b6e02e407bb98d63675d14384113c00c087472616e736665720c14897720d8cd76f4f00abfa37c0edd889c208fde9b41627d5b5238","scripts":[{"invocation":"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","verification":"130c2102103a7f7dd016558597f7960d27c516a4394fd968b9e65155eb4b013e4040406e0c2102a7bc55fe8684e0119768d104ba30795bdcc86619e864add26156723ed185cd620c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20c2103d90c07df63e690ce77912e10ab51acc944b66860237b608c4f8f8309e71ee699140b413073b3bb"}]},{"txid":"0xe7cff9e4820e53232dae619a3e6f57a9430dc240b5ed7b5c0ea2cfee3e90c985","size":579,"version":0,"nonce":3,"sender":"AXSvJVzydxXuL9da4GVwK25zdesCrVKkHL","sys_fee":"0","net_fee":"0.0088035","valid_until_block":1200,"attributes":[],"cosigners":[{"account":"0x4138145d67638db97b402ee0b6751ef16253ecab","scopes":1}],"script":"0300e87648170000000c14316e851039019d39dfc2c37d6c3fee19fd5809870c14abec5362f11e75b6e02e407bb98d63675d14384113c00c087472616e736665720c143b7d3711c6f0ccf9b1dca903d1bfa1d896f1238c41627d5b5238","scripts":[{"invocation":"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","verification":"130c2102103a7f7dd016558597f7960d27c516a4394fd968b9e65155eb4b013e4040406e0c2102a7bc55fe8684e0119768d104ba30795bdcc86619e864add26156723ed185cd620c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20c2103d90c07df63e690ce77912e10ab51acc944b66860237b608c4f8f8309e71ee699140b413073b3bb"}]}]}}`
+
+const hexHeader1 = "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"
+
+const header1Verbose = `{"id":5,"jsonrpc":"2.0","result":{"hash":"0xbd178d8d4a28ec082c034f817ce2423221281a31e7e00014dbf732c4053033d2","size":518,"version":0,"previousblockhash":"0x8f3b2c628ae86f037a735ec477932c81b8ae54b7abb3dd58cd87c97f90e762e8","merkleroot":"0x95831633b36588acf0e69f37f73d1a84cb0c5329790e837072206ba8842e1f30","time":1591366176001,"index":1,"nextconsensus":"AXSvJVzydxXuL9da4GVwK25zdesCrVKkHL","witnesses":[{"invocation":"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","verification":"130c2102103a7f7dd016558597f7960d27c516a4394fd968b9e65155eb4b013e4040406e0c2102a7bc55fe8684e0119768d104ba30795bdcc86619e864add26156723ed185cd620c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20c2103d90c07df63e690ce77912e10ab51acc944b66860237b608c4f8f8309e71ee699140b413073b3bb"}],"confirmations":6,"nextblockhash":"0xf2afe371a27c9dbac4f4a8ad8eba750898b7c04aa298e64fe9e488e947976045"}}`
+
+const txMoveNeoVerbose = `{"id":5,"jsonrpc":"2.0","result":{"blockhash":"0xbd178d8d4a28ec082c034f817ce2423221281a31e7e00014dbf732c4053033d2","confirmations":6,"blocktime":1591366176001,"txid":"0x8af9ccb8e7e0f0a73e77b78dc52750e77c50f78b09ecc2f0669c0b459cc7dd89","size":575,"version":0,"nonce":2,"sender":"AXSvJVzydxXuL9da4GVwK25zdesCrVKkHL","sys_fee":"0","net_fee":"0.0087635","valid_until_block":1200,"attributes":[],"cosigners":[{"account":"0x4138145d67638db97b402ee0b6751ef16253ecab","scopes":1}],"script":"0218ddf5050c14316e851039019d39dfc2c37d6c3fee19fd5809870c14abec5362f11e75b6e02e407bb98d63675d14384113c00c087472616e736665720c14897720d8cd76f4f00abfa37c0edd889c208fde9b41627d5b5238","scripts":[{"invocation":"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","verification":"130c2102103a7f7dd016558597f7960d27c516a4394fd968b9e65155eb4b013e4040406e0c2102a7bc55fe8684e0119768d104ba30795bdcc86619e864add26156723ed185cd620c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20c2103d90c07df63e690ce77912e10ab51acc944b66860237b608c4f8f8309e71ee699140b413073b3bb"}]}}`
+
+// getResultBlock1 returns data for block number 1 which is used by several tests.
+func getResultBlock1() *result.Block {
+	binB, err := hex.DecodeString(hexB1)
 	if err != nil {
 		panic(err)
 	}
-	nextCon, err := address.StringToUint160("AXSvJVzydxXuL9da4GVwK25zdesCrVKkHL")
+	b := new(block.Block)
+	err = testserdes.DecodeBinary(binB, b)
 	if err != nil {
 		panic(err)
 	}
-	blck := &block.Block{
-		Base: block.Base{
-			Version:       0,
-			PrevHash:      prevBlockHash,
-			MerkleRoot:    merkleRoot,
-			Timestamp:     1589300496,
-			Index:         202,
-			NextConsensus: nextCon,
-			Script: transaction.Witness{
-				InvocationScript:   invScript,
-				VerificationScript: verifScript,
-			},
-		},
-		ConsensusData: block.ConsensusData{
-			PrimaryIndex: 0,
-			Nonce:        nonce,
-		},
-		Transactions: []*transaction.Transaction{tx},
+	b2Hash, err := util.Uint256DecodeStringLE("f2afe371a27c9dbac4f4a8ad8eba750898b7c04aa298e64fe9e488e947976045")
+	if err != nil {
+		panic(err)
 	}
-	// Update hashes for correct result comparison.
-	_ = tx.Hash()
-	_ = blck.Hash()
 	return &result.Block{
-		Block: blck,
+		Block: b,
 		BlockMetadata: result.BlockMetadata{
-			Size:          781,
+			Size:          1681,
+			NextBlockHash: &b2Hash,
 			Confirmations: 6,
-			NextBlockHash: &nextBlockHash,
+		},
+	}
+}
+
+func getTxMoveNeo() *result.TransactionOutputRaw {
+	b1 := getResultBlock1()
+	txBin, err := hex.DecodeString(hexTxMoveNeo)
+	if err != nil {
+		panic(err)
+	}
+	tx := new(transaction.Transaction)
+	err = testserdes.DecodeBinary(txBin, tx)
+	if err != nil {
+		panic(err)
+	}
+	return &result.TransactionOutputRaw{
+		Transaction: tx,
+		TransactionMetadata: result.TransactionMetadata{
+			Timestamp:     b1.Timestamp,
+			Blockhash:     b1.Block.Hash(),
+			Confirmations: int(b1.Confirmations),
 		},
 	}
 }
@@ -146,32 +93,6 @@ func getResultBlock202() *result.Block {
 // published in official C# JSON-RPC API v2.10.3 reference
 // (see https://docs.neo.org/docs/en-us/reference/rpc/latest-version/api.html)
 var rpcClientTestCases = map[string][]rpcClientTestCase{
-	"getaccountstate": {
-		{
-			name: "positive",
-			invoke: func(c *Client) (interface{}, error) {
-				return c.GetAccountState("")
-			},
-			serverResponse: `{"jsonrpc":"2.0","id": 1,"result":{"version":0,"script_hash":"0x1179716da2e9523d153a35fb3ad10c561b1e5b1a","frozen":false,"votes":[],"balances":[{"asset":"0x1a5e0e3eac2abced7de9ee2de0820a5c85e63756fcdfc29b82fead86a7c07c78","value":"94"}]}}`,
-			result: func(c *Client) interface{} {
-				scriptHash, err := util.Uint160DecodeStringLE("1179716da2e9523d153a35fb3ad10c561b1e5b1a")
-				if err != nil {
-					panic(err)
-				}
-				return &result.AccountState{
-					Version:    0,
-					ScriptHash: scriptHash,
-					IsFrozen:   false,
-					Balances: result.Balances{
-						result.Balance{
-							Asset: core.GoverningTokenID(),
-							Value: util.Fixed8FromInt64(94),
-						},
-					},
-				}
-			},
-		},
-	},
 	"getapplicationlog": {
 		{
 			name: "positive",
@@ -204,30 +125,6 @@ var rpcClientTestCases = map[string][]rpcClientTestCase{
 			},
 		},
 	},
-	"getassetstate": {
-		{
-			name: "positive",
-			invoke: func(c *Client) (interface{}, error) {
-				return c.GetAssetState(util.Uint256{})
-			},
-			serverResponse: `{"id":1,"jsonrpc":"2.0","result":{"id":"0x1a5e0e3eac2abced7de9ee2de0820a5c85e63756fcdfc29b82fead86a7c07c78","type":0,"name":"NEO","amount":"100000000","available":"100000000","precision":0,"owner":"00","admin":"Abf2qMs1pzQb8kYk9RuxtUb9jtRKJVuBJt","issuer":"AFmseVrdL9f9oyCzZefL9tG6UbvhPbdYzM","expiration":4000000,"is_frozen":false}}`,
-			result: func(c *Client) interface{} {
-				return &result.AssetState{
-					ID:         core.GoverningTokenID(),
-					AssetType:  0,
-					Name:       "NEO",
-					Amount:     util.Fixed8FromInt64(100000000),
-					Available:  util.Fixed8FromInt64(100000000),
-					Precision:  0,
-					Owner:      "00",
-					Admin:      "Abf2qMs1pzQb8kYk9RuxtUb9jtRKJVuBJt",
-					Issuer:     "AFmseVrdL9f9oyCzZefL9tG6UbvhPbdYzM",
-					Expiration: 4000000,
-					IsFrozen:   false,
-				}
-			},
-		},
-	},
 	"getbestblockhash": {
 		{
 			name: "positive",
@@ -248,51 +145,37 @@ var rpcClientTestCases = map[string][]rpcClientTestCase{
 		{
 			name: "byIndex_positive",
 			invoke: func(c *Client) (interface{}, error) {
-				return c.GetBlockByIndex(202)
+				return c.GetBlockByIndex(1)
 			},
-			serverResponse: `{"id":1,"jsonrpc":"2.0","result":"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"}`,
-			result:         func(c *Client) interface{} { return &block.Block{} },
-			check: func(t *testing.T, c *Client, result interface{}) {
-				res, ok := result.(*block.Block)
-				require.True(t, ok)
-				assert.Equal(t, uint32(0), res.Version)
-				assert.Equal(t, "cbb73ed9e31dc41a8a222749de475e6ebc2a73b99f73b091a72e0b146110fe86", res.Hash().StringLE())
-				assert.Equal(t, "93b540424c1173e487a47582a652686b2885f959ffd895b30e184842403990ef", res.PrevHash.StringLE())
-				assert.Equal(t, "b8e923148dede20901d6fb225579f6d430cc58f24461d1b0f860ee32abbfcc8d", res.MerkleRoot.StringLE())
-				assert.Equal(t, 1, len(res.Transactions))
-				assert.Equal(t, "96ef00d2efe03101f5b302f7fc3c8fcd22688944bdc83ab99071d77edbb08581", res.Transactions[0].Hash().StringLE())
+			serverResponse: `{"id":1,"jsonrpc":"2.0","result":"` + hexB1 + `"}`,
+			result: func(c *Client) interface{} {
+				b := getResultBlock1()
+				return b.Block
 			},
 		},
 		{
 			name: "byIndex_verbose_positive",
 			invoke: func(c *Client) (i interface{}, err error) {
-				return c.GetBlockByIndexVerbose(202)
+				return c.GetBlockByIndexVerbose(1)
 			},
-			serverResponse: `{"id":1,"jsonrpc":"2.0","result":{"hash":"0xcbb73ed9e31dc41a8a222749de475e6ebc2a73b99f73b091a72e0b146110fe86","size":781,"version":0,"nextblockhash":"0x13283c93aec07dc90be3ddd65e2de15e9212f1b3205303f688d6df85129f6b22","previousblockhash":"0x93b540424c1173e487a47582a652686b2885f959ffd895b30e184842403990ef","merkleroot":"0xb8e923148dede20901d6fb225579f6d430cc58f24461d1b0f860ee32abbfcc8d","time":1589300496,"index":202,"consensus_data":{"primary":0,"nonce":"0000000000000457"},"nextconsensus":"AXSvJVzydxXuL9da4GVwK25zdesCrVKkHL","confirmations":6,"witnesses":[{"invocation":"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","verification":"130c2102103a7f7dd016558597f7960d27c516a4394fd968b9e65155eb4b013e4040406e0c2102a7bc55fe8684e0119768d104ba30795bdcc86619e864add26156723ed185cd620c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20c2103d90c07df63e690ce77912e10ab51acc944b66860237b608c4f8f8309e71ee699140b413073b3bb"}],"tx":[{"txid":"0x96ef00d2efe03101f5b302f7fc3c8fcd22688944bdc83ab99071d77edbb08581","size":254,"type":"ContractTransaction","version":0,"nonce":3,"sender":"ALHF9wsXZVEuCGgmDA6ZNsCLtrb4A1g4yG","sys_fee":"0","net_fee":"0","valid_until_block":1200,"attributes":[],"cosigners":[],"vin":[{"txid":"0x33e045101301854a0e07ff96a92ca1ba9b23c19501f1b7eb15ae9eea07b5f370","vout":0}],"vout":[{"address":"ALHF9wsXZVEuCGgmDA6ZNsCLtrb4A1g4yG","asset":"0x1a5e0e3eac2abced7de9ee2de0820a5c85e63756fcdfc29b82fead86a7c07c78","n":0,"value":"99999000"}],"scripts":[{"invocation":"0c402caebbee911a1f159aa05ab40093d086090a817e837f3f87e8b3e47f6b083649137770f6dda0349ddd611bc47402aca457a89b3b7b0076307ab6a47fd57048eb","verification":"0c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20b410a906ad4"}]}]}}`,
+			serverResponse: b1Verbose,
 			result: func(c *Client) interface{} {
-				return getResultBlock202()
+				return getResultBlock1()
 			},
 		},
 		{
 			name: "byHash_positive",
 			invoke: func(c *Client) (interface{}, error) {
-				hash, err := util.Uint256DecodeStringLE("86fe1061140b2ea791b0739fb9732abc6e5e47de4927228a1ac41de3d93eb7cb")
+				hash, err := util.Uint256DecodeStringLE("d151651e86680a7ecbc87babf3346a42e7bc9974414ce192c9c22ac4f2e9d043")
 				if err != nil {
 					panic(err)
 				}
 				return c.GetBlockByHash(hash)
 			},
-			serverResponse: `{"id":1,"jsonrpc":"2.0","result":"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"}`,
-			result:         func(c *Client) interface{} { return &block.Block{} },
-			check: func(t *testing.T, c *Client, result interface{}) {
-				res, ok := result.(*block.Block)
-				require.True(t, ok)
-				assert.Equal(t, uint32(0), res.Version)
-				assert.Equal(t, "cbb73ed9e31dc41a8a222749de475e6ebc2a73b99f73b091a72e0b146110fe86", res.Hash().StringLE())
-				assert.Equal(t, "93b540424c1173e487a47582a652686b2885f959ffd895b30e184842403990ef", res.PrevHash.StringLE())
-				assert.Equal(t, "b8e923148dede20901d6fb225579f6d430cc58f24461d1b0f860ee32abbfcc8d", res.MerkleRoot.StringLE())
-				assert.Equal(t, 1, len(res.Transactions))
-				assert.Equal(t, "96ef00d2efe03101f5b302f7fc3c8fcd22688944bdc83ab99071d77edbb08581", res.Transactions[0].Hash().StringLE())
+			serverResponse: `{"id":1,"jsonrpc":"2.0","result":"` + hexB1 + `"}`,
+			result: func(c *Client) interface{} {
+				b := getResultBlock1()
+				return b.Block
 			},
 		},
 		{
@@ -304,9 +187,9 @@ var rpcClientTestCases = map[string][]rpcClientTestCase{
 				}
 				return c.GetBlockByHashVerbose(hash)
 			},
-			serverResponse: `{"id":1,"jsonrpc":"2.0","result":{"hash":"0xcbb73ed9e31dc41a8a222749de475e6ebc2a73b99f73b091a72e0b146110fe86","size":781,"version":0,"nextblockhash":"0x13283c93aec07dc90be3ddd65e2de15e9212f1b3205303f688d6df85129f6b22","previousblockhash":"0x93b540424c1173e487a47582a652686b2885f959ffd895b30e184842403990ef","merkleroot":"0xb8e923148dede20901d6fb225579f6d430cc58f24461d1b0f860ee32abbfcc8d","time":1589300496,"index":202,"consensus_data":{"primary":0,"nonce":"0000000000000457"},"nextconsensus":"AXSvJVzydxXuL9da4GVwK25zdesCrVKkHL","confirmations":6,"witnesses":[{"invocation":"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","verification":"130c2102103a7f7dd016558597f7960d27c516a4394fd968b9e65155eb4b013e4040406e0c2102a7bc55fe8684e0119768d104ba30795bdcc86619e864add26156723ed185cd620c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20c2103d90c07df63e690ce77912e10ab51acc944b66860237b608c4f8f8309e71ee699140b413073b3bb"}],"tx":[{"txid":"0x96ef00d2efe03101f5b302f7fc3c8fcd22688944bdc83ab99071d77edbb08581","size":254,"type":"ContractTransaction","version":0,"nonce":3,"sender":"ALHF9wsXZVEuCGgmDA6ZNsCLtrb4A1g4yG","sys_fee":"0","net_fee":"0","valid_until_block":1200,"attributes":[],"cosigners":[],"vin":[{"txid":"0x33e045101301854a0e07ff96a92ca1ba9b23c19501f1b7eb15ae9eea07b5f370","vout":0}],"vout":[{"address":"ALHF9wsXZVEuCGgmDA6ZNsCLtrb4A1g4yG","asset":"0x1a5e0e3eac2abced7de9ee2de0820a5c85e63756fcdfc29b82fead86a7c07c78","n":0,"value":"99999000"}],"scripts":[{"invocation":"0c402caebbee911a1f159aa05ab40093d086090a817e837f3f87e8b3e47f6b083649137770f6dda0349ddd611bc47402aca457a89b3b7b0076307ab6a47fd57048eb","verification":"0c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20b410a906ad4"}]}]}}`,
+			serverResponse: b1Verbose,
 			result: func(c *Client) interface{} {
-				return getResultBlock202()
+				return getResultBlock1()
 			},
 		},
 	},
@@ -348,15 +231,10 @@ var rpcClientTestCases = map[string][]rpcClientTestCase{
 				}
 				return c.GetBlockHeader(hash)
 			},
-			serverResponse: `{"id":1,"jsonrpc":"2.0","result":"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"}`,
-			result:         func(c *Client) interface{} { return &block.Header{} },
-			check: func(t *testing.T, c *Client, result interface{}) {
-				res, ok := result.(*block.Header)
-				require.True(t, ok)
-				assert.Equal(t, uint32(0), res.Version)
-				assert.Equal(t, "68e4bd688b852e807eef13a0ff7da7b02223e359a35153667e88f9cb4a3b0801", res.Hash().StringLE())
-				assert.Equal(t, "b9cddf4889cafff0399c598086f8acaeb6cef84fd2373453b03ed6495eda39d0", res.PrevHash.StringLE())
-				assert.Equal(t, "07c06af53c7da479dbbbcef457e521767fe73b4e415893d645cf91ca1fef3d4a", res.MerkleRoot.StringLE())
+			serverResponse: `{"id":1,"jsonrpc":"2.0","result":"` + hexHeader1 + `"}`,
+			result: func(c *Client) interface{} {
+				b := getResultBlock1()
+				return b.Header()
 			},
 		},
 		{
@@ -368,12 +246,12 @@ var rpcClientTestCases = map[string][]rpcClientTestCase{
 				}
 				return c.GetBlockHeaderVerbose(hash)
 			},
-			serverResponse: `{"id":1,"jsonrpc":"2.0","result":{"hash":"0xcbb73ed9e31dc41a8a222749de475e6ebc2a73b99f73b091a72e0b146110fe86","size":781,"version":0,"nextblockhash":"0x13283c93aec07dc90be3ddd65e2de15e9212f1b3205303f688d6df85129f6b22","previousblockhash":"0x93b540424c1173e487a47582a652686b2885f959ffd895b30e184842403990ef","merkleroot":"0xb8e923148dede20901d6fb225579f6d430cc58f24461d1b0f860ee32abbfcc8d","time":1589300496,"index":202,"nextconsensus":"AXSvJVzydxXuL9da4GVwK25zdesCrVKkHL","confirmations":6,"witnesses":[{"invocation":"0c403620ef8f02d7884c553fb6c54d2fe717cfddd9450886c5fc88a669a29a82fa1a7c715076996567a5a56747f20f10d7e4db071d73b306ccbf17f9a916fcfa1d020c4099e27d87bbb3fb4ce1c77dca85cf3eac46c9c3de87d8022ef7ad2b0a2bb980339293849cf85e5a0a5615ea7bc5bb0a7f28e31f278dc19d628f64c49b888df4c60c40616eefc9286843c2f3f2cf1815988356e409b3f10ffaf60b3468dc0a92dd929cbc8d5da74052c303e7474412f6beaddd551e9056c4e7a5fccdc06107e48f3fe10c40fd2d25d4156e969345c0522669b509e5ced70e4265066eadaf85eea3919d5ded525f8f52d6f0dfa0186c964dd0302fca5bc2dc0540b4ed21085be478c3123996","verification":"130c2102103a7f7dd016558597f7960d27c516a4394fd968b9e65155eb4b013e4040406e0c2102a7bc55fe8684e0119768d104ba30795bdcc86619e864add26156723ed185cd620c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20c2103d90c07df63e690ce77912e10ab51acc944b66860237b608c4f8f8309e71ee699140b413073b3bb"}]}}`,
+			serverResponse: header1Verbose,
 			result: func(c *Client) interface{} {
-				b := getResultBlock202()
+				b := getResultBlock1()
 				return &result.Header{
 					Hash:          b.Hash(),
-					Size:          781,
+					Size:          518,
 					Version:       b.Version,
 					NextBlockHash: b.NextBlockHash,
 					PrevBlockHash: b.PrevHash,
@@ -399,36 +277,6 @@ var rpcClientTestCases = map[string][]rpcClientTestCase{
 			},
 		},
 	},
-	"getclaimable": {
-		{
-			name: "positive",
-			invoke: func(c *Client) (interface{}, error) {
-				return c.GetClaimable("AGofsxAUDwt52KjaB664GYsqVAkULYvKNt")
-			},
-			serverResponse: `{"jsonrpc":"2.0","id":1,"result":{"claimable":[{"txid":"52ba70ef18e879785572c917795cd81422c3820b8cf44c24846a30ee7376fd77","n":1,"value":800000,"start_height":476496,"end_height":488154,"generated":746.112,"sys_fee": 3.92,"unclaimed":750.032}],"address":"AGofsxAUDwt52KjaB664GYsqVAkULYvKNt","unclaimed": 750.032}}`,
-			result: func(c *Client) interface{} {
-				txID, err := util.Uint256DecodeStringLE("52ba70ef18e879785572c917795cd81422c3820b8cf44c24846a30ee7376fd77")
-				if err != nil {
-					panic(err)
-				}
-				return &result.ClaimableInfo{
-					Spents: []result.Claimable{
-						{
-							Tx:          txID,
-							N:           1,
-							Value:       util.Fixed8FromInt64(800000),
-							StartHeight: 476496,
-							EndHeight:   488154,
-							Generated:   util.Fixed8FromFloat(746.112),
-							SysFee:      util.Fixed8FromFloat(3.92),
-							Unclaimed:   util.Fixed8FromFloat(750.032),
-						}},
-					Address:   "AGofsxAUDwt52KjaB664GYsqVAkULYvKNt",
-					Unclaimed: util.Fixed8FromFloat(750.032),
-				}
-			},
-		},
-	},
 	"getconnectioncount": {
 		{
 			name: "positive",
@@ -593,21 +441,16 @@ var rpcClientTestCases = map[string][]rpcClientTestCase{
 		{
 			name: "positive",
 			invoke: func(c *Client) (i interface{}, err error) {
-				hash, err := util.Uint256DecodeStringLE("8185b0db7ed77190b93ac8bd44896822cd8f3cfcf702b3f50131e0efd200ef96")
+				hash, err := util.Uint256DecodeStringLE("ca23bd5df3249836849309ca2afe972bfd288b0a7ae61302c8fd545daa8bffd6")
 				if err != nil {
 					panic(err)
 				}
 				return c.GetRawTransaction(hash)
 			},
-			serverResponse: `{"id":1,"jsonrpc":"2.0","result":"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"}`,
-			result:         func(c *Client) interface{} { return &transaction.Transaction{} },
-			check: func(t *testing.T, c *Client, result interface{}) {
-				res, ok := result.(*transaction.Transaction)
-				require.True(t, ok)
-				assert.Equal(t, uint8(0), res.Version)
-				assert.Equal(t, "8185b0db7ed77190b93ac8bd44896822cd8f3cfcf702b3f50131e0efd200ef96", res.Hash().StringBE())
-				assert.Equal(t, transaction.ContractType, res.Type)
-				assert.Equal(t, false, res.Trimmed)
+			serverResponse: `{"id":1,"jsonrpc":"2.0","result":"` + hexTxMoveNeo + `"}`,
+			result: func(c *Client) interface{} {
+				tx := getTxMoveNeo()
+				return tx.Transaction
 			},
 		},
 		{
@@ -619,68 +462,9 @@ var rpcClientTestCases = map[string][]rpcClientTestCase{
 				}
 				return c.GetRawTransactionVerbose(hash)
 			},
-			serverResponse: `{"jsonrpc":"2.0","id":1,"result":{"blockhash":"0xcbb73ed9e31dc41a8a222749de475e6ebc2a73b99f73b091a72e0b146110fe86","confirmations":8,"blocktime":1589300496,"txid":"0x96ef00d2efe03101f5b302f7fc3c8fcd22688944bdc83ab99071d77edbb08581","size":254,"type":"ContractTransaction","version":0,"nonce":3,"sender":"ALHF9wsXZVEuCGgmDA6ZNsCLtrb4A1g4yG","sys_fee":"0","net_fee":"0","valid_until_block":1200,"attributes":[],"cosigners":[],"vin":[{"txid":"0x33e045101301854a0e07ff96a92ca1ba9b23c19501f1b7eb15ae9eea07b5f370","vout":0}],"vout":[{"address":"ALHF9wsXZVEuCGgmDA6ZNsCLtrb4A1g4yG","asset":"0x1a5e0e3eac2abced7de9ee2de0820a5c85e63756fcdfc29b82fead86a7c07c78","n":0,"value":"99999000"}],"scripts":[{"invocation":"0c402caebbee911a1f159aa05ab40093d086090a817e837f3f87e8b3e47f6b083649137770f6dda0349ddd611bc47402aca457a89b3b7b0076307ab6a47fd57048eb","verification":"0c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20b410a906ad4"}]}}`,
+			serverResponse: txMoveNeoVerbose,
 			result: func(c *Client) interface{} {
-				blockHash, err := util.Uint256DecodeStringLE("cbb73ed9e31dc41a8a222749de475e6ebc2a73b99f73b091a72e0b146110fe86")
-				if err != nil {
-					panic(err)
-				}
-				sender, err := address.StringToUint160("ALHF9wsXZVEuCGgmDA6ZNsCLtrb4A1g4yG")
-				if err != nil {
-					panic(err)
-				}
-				invocation, err := hex.DecodeString("0c402caebbee911a1f159aa05ab40093d086090a817e837f3f87e8b3e47f6b083649137770f6dda0349ddd611bc47402aca457a89b3b7b0076307ab6a47fd57048eb")
-				if err != nil {
-					panic(err)
-				}
-				verification, err := hex.DecodeString("0c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20b410a906ad4")
-				if err != nil {
-					panic(err)
-				}
-				vin, err := util.Uint256DecodeStringLE("33e045101301854a0e07ff96a92ca1ba9b23c19501f1b7eb15ae9eea07b5f370")
-				if err != nil {
-					panic(err)
-				}
-				outAddress, err := address.StringToUint160("ALHF9wsXZVEuCGgmDA6ZNsCLtrb4A1g4yG")
-				if err != nil {
-					panic(err)
-				}
-				tx := transaction.NewContractTX()
-				tx.Nonce = 3
-				tx.ValidUntilBlock = 1200
-				tx.Sender = sender
-				tx.Scripts = []transaction.Witness{
-					{
-						InvocationScript:   invocation,
-						VerificationScript: verification,
-					},
-				}
-				tx.Inputs = []transaction.Input{
-					{
-						PrevHash:  vin,
-						PrevIndex: 0,
-					},
-				}
-				tx.Outputs = []transaction.Output{
-					{
-						AssetID:    core.GoverningTokenID(),
-						Amount:     util.Fixed8FromInt64(99999000),
-						ScriptHash: outAddress,
-						Position:   0,
-					},
-				}
-
-				// Update hashes for correct result comparison.
-				_ = tx.Hash()
-
-				return &result.TransactionOutputRaw{
-					Transaction: tx,
-					TransactionMetadata: result.TransactionMetadata{
-						Blockhash:     blockHash,
-						Confirmations: 8,
-						Timestamp:     uint64(1589300496),
-					},
-				}
+				return getTxMoveNeo()
 			},
 		},
 	},
@@ -724,56 +508,15 @@ var rpcClientTestCases = map[string][]rpcClientTestCase{
 			},
 		},
 	},
-	"gettxout": {
+	"getunclaimedgas": {
 		{
 			name: "positive",
 			invoke: func(c *Client) (interface{}, error) {
-				hash, err := util.Uint256DecodeStringLE("f4250dab094c38d8265acc15c366dc508d2e14bf5699e12d9df26577ed74d657")
-				if err != nil {
-					panic(err)
-				}
-				return c.GetTxOut(hash, 0)
+				return c.GetUnclaimedGas("AGofsxAUDwt52KjaB664GYsqVAkULYvKNt")
 			},
-			serverResponse: `{"jsonrpc":"2.0","id":1,"result":{"N":0,"Asset":"c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c9b","Value":"2950","Address":"AHCNSDkh2Xs66SzmyKGdoDKY752uyeXDrt"}}`,
+			serverResponse: `{"jsonrpc":"2.0","id":1,"result":"897299680935"}`,
 			result: func(c *Client) interface{} {
-				return &result.TransactionOutput{
-					N:       0,
-					Asset:   "c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c9b",
-					Value:   util.Fixed8FromInt64(2950),
-					Address: "AHCNSDkh2Xs66SzmyKGdoDKY752uyeXDrt",
-				}
-			},
-		},
-	},
-	"getunclaimed": {
-		{
-			name: "positive",
-			invoke: func(c *Client) (interface{}, error) {
-				return c.GetUnclaimed("AGofsxAUDwt52KjaB664GYsqVAkULYvKNt")
-			},
-			serverResponse: `{"jsonrpc":"2.0","id":1,"result":{"available":750.032,"unavailable":2815.408,"unclaimed":3565.44}}`,
-			result: func(c *Client) interface{} {
-				return &result.Unclaimed{
-					Available:   util.Fixed8FromFloat(750.032),
-					Unavailable: util.Fixed8FromFloat(2815.408),
-					Unclaimed:   util.Fixed8FromFloat(3565.44),
-				}
-			},
-		},
-	},
-	"getunspents": {
-		{
-			name: "positive",
-			invoke: func(c *Client) (interface{}, error) {
-				return c.GetUnspents("AK2nJJpJr6o664CWJKi1QRXjqeic2zRp8y")
-			},
-			serverResponse: `{"id":1,"jsonrpc":"2.0","result":{"balance":[{"unspent":[{"txid":"0x83df8bd085fcb60b2789f7d0a9f876e5f3908567f7877fcba835e899b9dea0b5","n":0,"value":"100000000"}],"asset_hash":"0xc56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c9b","asset":"NEO","asset_symbol":"NEO","amount":"100000000"},{"unspent":[{"txid":"0x2ab085fa700dd0df4b73a94dc17a092ac3a85cbd965575ea1585d1668553b2f9","n":0,"value":"19351.99993"}],"asset_hash":"0x602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7","asset":"GAS","asset_symbol":"GAS","amount":"19351.99993"}],"address":"AK2nJJpJr6o664CWJKi1QRXjqeic2zRp8y"}}`,
-			result:         func(c *Client) interface{} { return &result.Unspents{} },
-			check: func(t *testing.T, c *Client, uns interface{}) {
-				res, ok := uns.(*result.Unspents)
-				require.True(t, ok)
-				assert.Equal(t, "AK2nJJpJr6o664CWJKi1QRXjqeic2zRp8y", res.Address)
-				assert.Equal(t, 2, len(res.Balance))
+				return util.Fixed8(897299680935)
 			},
 		},
 	},
@@ -873,7 +616,7 @@ var rpcClientTestCases = map[string][]rpcClientTestCase{
 		{
 			name: "positive",
 			invoke: func(c *Client) (interface{}, error) {
-				return nil, c.SendRawTransaction(transaction.NewContractTX())
+				return nil, c.SendRawTransaction(transaction.New([]byte{byte(opcode.PUSH1)}, 0))
 			},
 			serverResponse: `{"jsonrpc":"2.0","id":1,"result":true}`,
 			result: func(c *Client) interface{} {
@@ -994,7 +737,7 @@ var rpcClientErrorCases = map[string][]rpcClientErrorCase{
 		{
 			name: "sendrawtransaction_bad_server_answer",
 			invoke: func(c *Client) (interface{}, error) {
-				return nil, c.SendRawTransaction(transaction.NewContractTX())
+				return nil, c.SendRawTransaction(transaction.New([]byte{byte(opcode.PUSH1)}, 0))
 			},
 		},
 		{
@@ -1015,24 +758,12 @@ var rpcClientErrorCases = map[string][]rpcClientErrorCase{
 		},
 	},
 	`{"id":1,"jsonrpc":"2.0","error":{"code":-32602,"message":"Invalid Params"}}`: {
-		{
-			name: "getaccountstate_invalid_params_error",
-			invoke: func(c *Client) (i interface{}, err error) {
-				return c.GetAccountState("")
-			},
-		},
 		{
 			name: "getapplicationlog_invalid_params_error",
 			invoke: func(c *Client) (interface{}, error) {
 				return c.GetApplicationLog(util.Uint256{})
 			},
 		},
-		{
-			name: "getassetstate_invalid_params_error",
-			invoke: func(c *Client) (interface{}, error) {
-				return c.GetAssetState(core.GoverningTokenID())
-			},
-		},
 		{
 			name: "getbestblockhash_invalid_params_error",
 			invoke: func(c *Client) (interface{}, error) {
@@ -1087,12 +818,6 @@ var rpcClientErrorCases = map[string][]rpcClientErrorCase{
 				return c.GetBlockSysFee(1)
 			},
 		},
-		{
-			name: "getclaimable_invalid_params_error",
-			invoke: func(c *Client) (interface{}, error) {
-				return c.GetClaimable("")
-			},
-		},
 		{
 			name: "getconnectioncount_invalid_params_error",
 			invoke: func(c *Client) (interface{}, error) {
@@ -1142,21 +867,9 @@ var rpcClientErrorCases = map[string][]rpcClientErrorCase{
 			},
 		},
 		{
-			name: "gettxoutput_invalid_params_error",
+			name: "getunclaimedgas_invalid_params_error",
 			invoke: func(c *Client) (interface{}, error) {
-				return c.GetTxOut(util.Uint256{}, 0)
-			},
-		},
-		{
-			name: "getunclaimed_invalid_params_error",
-			invoke: func(c *Client) (interface{}, error) {
-				return c.GetUnclaimed("")
-			},
-		},
-		{
-			name: "getunspents_invalid_params_error",
-			invoke: func(c *Client) (interface{}, error) {
-				return c.GetUnspents("")
+				return c.GetUnclaimedGas("")
 			},
 		},
 		{
@@ -1191,24 +904,12 @@ var rpcClientErrorCases = map[string][]rpcClientErrorCase{
 		},
 	},
 	`{}`: {
-		{
-			name: "getaccountstate_unmarshalling_error",
-			invoke: func(c *Client) (interface{}, error) {
-				return c.GetAccountState("")
-			},
-		},
 		{
 			name: "getapplicationlog_unmarshalling_error",
 			invoke: func(c *Client) (interface{}, error) {
 				return c.GetApplicationLog(util.Uint256{})
 			},
 		},
-		{
-			name: "getassetstate_unmarshalling_error",
-			invoke: func(c *Client) (interface{}, error) {
-				return c.GetAssetState(core.GoverningTokenID())
-			},
-		},
 		{
 			name: "getbestblockhash_unmarshalling_error",
 			invoke: func(c *Client) (interface{}, error) {
@@ -1269,12 +970,6 @@ var rpcClientErrorCases = map[string][]rpcClientErrorCase{
 				return c.GetBlockSysFee(1)
 			},
 		},
-		{
-			name: "getclaimable_unmarshalling_error",
-			invoke: func(c *Client) (interface{}, error) {
-				return c.GetClaimable("")
-			},
-		},
 		{
 			name: "getconnectioncount_unmarshalling_error",
 			invoke: func(c *Client) (interface{}, error) {
@@ -1336,21 +1031,9 @@ var rpcClientErrorCases = map[string][]rpcClientErrorCase{
 			},
 		},
 		{
-			name: "getxoutput_unmarshalling_error",
+			name: "getunclaimedgas_unmarshalling_error",
 			invoke: func(c *Client) (interface{}, error) {
-				return c.GetTxOut(util.Uint256{}, 0)
-			},
-		},
-		{
-			name: "getunclaimed_unmarshalling_error",
-			invoke: func(c *Client) (interface{}, error) {
-				return c.GetUnclaimed("")
-			},
-		},
-		{
-			name: "getunspents_unmarshalling_error",
-			invoke: func(c *Client) (interface{}, error) {
-				return c.GetUnspents("")
+				return c.GetUnclaimedGas("")
 			},
 		},
 		{
@@ -1380,7 +1063,7 @@ var rpcClientErrorCases = map[string][]rpcClientErrorCase{
 		{
 			name: "sendrawtransaction_unmarshalling_error",
 			invoke: func(c *Client) (interface{}, error) {
-				return nil, c.SendRawTransaction(transaction.NewContractTX())
+				return nil, c.SendRawTransaction(transaction.New([]byte{byte(opcode.PUSH1)}, 0))
 			},
 		},
 		{
diff --git a/pkg/rpc/client/wsclient_test.go b/pkg/rpc/client/wsclient_test.go
index a31a6beb0..6050c35f3 100644
--- a/pkg/rpc/client/wsclient_test.go
+++ b/pkg/rpc/client/wsclient_test.go
@@ -117,8 +117,8 @@ func TestWSClientEvents(t *testing.T) {
 	var events = []string{
 		`{"jsonrpc":"2.0","method":"transaction_executed","params":[{"txid":"0xe1cd5e57e721d2a2e05fb1f08721b12057b25ab1dd7fd0f33ee1639932fdfad7","executions":[{"trigger":"Application","contract":"0x0000000000000000000000000000000000000000","vmstate":"HALT","gas_consumed":"2.291","stack":[],"notifications":[{"contract":"0x1b4357bff5a01bdf2a6581247cf9ed1e24629176","state":{"type":"Array","value":[{"type":"ByteArray","value":"636f6e74726163742063616c6c"},{"type":"ByteArray","value":"7472616e73666572"},{"type":"Array","value":[{"type":"ByteArray","value":"769162241eedf97c2481652adf1ba0f5bf57431b"},{"type":"ByteArray","value":"316e851039019d39dfc2c37d6c3fee19fd580987"},{"type":"Integer","value":"1000"}]}]}},{"contract":"0x1b4357bff5a01bdf2a6581247cf9ed1e24629176","state":{"type":"Array","value":[{"type":"ByteArray","value":"7472616e73666572"},{"type":"ByteArray","value":"769162241eedf97c2481652adf1ba0f5bf57431b"},{"type":"ByteArray","value":"316e851039019d39dfc2c37d6c3fee19fd580987"},{"type":"Integer","value":"1000"}]}}]}]}]}`,
 		`{"jsonrpc":"2.0","method":"notification_from_execution","params":[{"contract":"0x1b4357bff5a01bdf2a6581247cf9ed1e24629176","state":{"type":"Array","value":[{"type":"ByteArray","value":"636f6e74726163742063616c6c"},{"type":"ByteArray","value":"7472616e73666572"},{"type":"Array","value":[{"type":"ByteArray","value":"769162241eedf97c2481652adf1ba0f5bf57431b"},{"type":"ByteArray","value":"316e851039019d39dfc2c37d6c3fee19fd580987"},{"type":"Integer","value":"1000"}]}]}}]}`,
-		`{"jsonrpc":"2.0","method":"transaction_added","params":[{"txid":"0xe1cd5e57e721d2a2e05fb1f08721b12057b25ab1dd7fd0f33ee1639932fdfad7","size":277,"type":"InvocationTransaction","version":1,"nonce":9,"sender":"ALHF9wsXZVEuCGgmDA6ZNsCLtrb4A1g4yG","sys_fee":"0","net_fee":"0.0037721","valid_until_block":1200,"attributes":[],"cosigners":[{"account":"0x870958fd19ee3f6c7dc3c2df399d013910856e31","scopes":1}],"vin":[],"vout":[],"scripts":[{"invocation":"0c4027727296b84853c5d9e07fb8a40e885246ae25641383b16eefbe92027ecb1635b794aacf6bbfc3e828c73829b14791c483d19eb758b57638e3191393dbf2d288","verification":"0c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20b410a906ad4"}],"script":"01e8030c14316e851039019d39dfc2c37d6c3fee19fd5809870c14769162241eedf97c2481652adf1ba0f5bf57431b13c00c087472616e736665720c14769162241eedf97c2481652adf1ba0f5bf57431b41627d5b5238"}]}`,
-		`{"jsonrpc":"2.0","method":"block_added","params":[{"hash":"0x239fea00c54c2f6812612874183b72bef4473fcdf68bf8da08d74fd5b6cab030","version":0,"previousblockhash":"0x04f7580b111ec75f0ce68d3a9fd70a0544b4521b4a98541694d8575c548b759e","merkleroot":"0xb2c7230ebee4cb83bc03afadbba413e6bca8fcdeaf9c077bea060918da0e52a1","time":1590006200,"index":207,"nextconsensus":"AXSvJVzydxXuL9da4GVwK25zdesCrVKkHL","witnesses":[{"invocation":"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","verification":"130c2102103a7f7dd016558597f7960d27c516a4394fd968b9e65155eb4b013e4040406e0c2102a7bc55fe8684e0119768d104ba30795bdcc86619e864add26156723ed185cd620c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20c2103d90c07df63e690ce77912e10ab51acc944b66860237b608c4f8f8309e71ee699140b413073b3bb"}],"consensus_data":{"primary":0,"nonce":"0000000000000457"},"tx":[{"txid":"0xf736cd91ab84062a21a09b424346b241987f6245ffe8c2b2db39d595c3c222f7","size":204,"type":"InvocationTransaction","version":1,"nonce":8,"sender":"ALHF9wsXZVEuCGgmDA6ZNsCLtrb4A1g4yG","sys_fee":"0","net_fee":"0.0030421","valid_until_block":1200,"attributes":[],"cosigners":[],"vin":[],"vout":[],"scripts":[{"invocation":"0c4016e7a112742409cdfaad89dcdbcb52c94c5c1a69dfe5d8b999649eaaa787e31ca496d1734d6ea606c749ad36e9a88892240ae59e0efa7f544e0692124898d512","verification":"0c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20b410a906ad4"}],"script":"10c00c04696e69740c14769162241eedf97c2481652adf1ba0f5bf57431b41627d5b52"},{"txid":"0xe1cd5e57e721d2a2e05fb1f08721b12057b25ab1dd7fd0f33ee1639932fdfad7","size":277,"type":"InvocationTransaction","version":1,"nonce":9,"sender":"ALHF9wsXZVEuCGgmDA6ZNsCLtrb4A1g4yG","sys_fee":"0","net_fee":"0.0037721","valid_until_block":1200,"attributes":[],"cosigners":[{"account":"0x870958fd19ee3f6c7dc3c2df399d013910856e31","scopes":1}],"vin":[],"vout":[],"scripts":[{"invocation":"0c4027727296b84853c5d9e07fb8a40e885246ae25641383b16eefbe92027ecb1635b794aacf6bbfc3e828c73829b14791c483d19eb758b57638e3191393dbf2d288","verification":"0c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20b410a906ad4"}],"script":"01e8030c14316e851039019d39dfc2c37d6c3fee19fd5809870c14769162241eedf97c2481652adf1ba0f5bf57431b13c00c087472616e736665720c14769162241eedf97c2481652adf1ba0f5bf57431b41627d5b5238"}]}]}`,
+		`{"jsonrpc":"2.0","method":"transaction_added","params":[{"txid":"0x1c615d4043c98fc0e285c2f40cc3601cf4ebe1cf9d2b404dfc67c9cd085444ec","size":265,"version":0,"nonce":9,"sender":"ALHF9wsXZVEuCGgmDA6ZNsCLtrb4A1g4yG","sys_fee":"0","net_fee":"0.0036521","valid_until_block":1200,"attributes":[],"cosigners":[{"account":"0x870958fd19ee3f6c7dc3c2df399d013910856e31","scopes":1}],"script":"007b0c1420728274afafc36f43a071d328cfa3e629d9cbb00c14316e851039019d39dfc2c37d6c3fee19fd58098713c00c087472616e736665720c14769162241eedf97c2481652adf1ba0f5bf57431b41627d5b5238","scripts":[{"invocation":"0c4034d02f3b97a220ffe79640e482b887ec0e44dcc95e719f5e2b43b29987f0c9822b9af0499d90094c6ad3ba191e434a3df5dd378d3b73318cf47c9f2d6d801cc8","verification":"0c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20b410a906ad4"}]}]}`,
+		`{"jsonrpc":"2.0","method":"block_added","params":[{"hash":"0x765ea65b4de6addfee29b1c90ac922d1901c8d7ab7f2366da9a8ad3dd71ca703","version":0,"previousblockhash":"0xbdeed527a43ab72d5d8cecf1dc6ee142112ff8a8eaaaebc7206d3df3bf3c1169","merkleroot":"0xa1b321f59b127cddd23b0cd47fc9ec7920647d30d7ab23318a106597b9c9abad","time":1591366176006,"index":6,"nextconsensus":"AXSvJVzydxXuL9da4GVwK25zdesCrVKkHL","witnesses":[{"invocation":"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","verification":"130c2102103a7f7dd016558597f7960d27c516a4394fd968b9e65155eb4b013e4040406e0c2102a7bc55fe8684e0119768d104ba30795bdcc86619e864add26156723ed185cd620c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20c2103d90c07df63e690ce77912e10ab51acc944b66860237b608c4f8f8309e71ee699140b413073b3bb"}],"consensus_data":{"primary":0,"nonce":"0000000000000457"},"tx":[{"txid":"0x1c615d4043c98fc0e285c2f40cc3601cf4ebe1cf9d2b404dfc67c9cd085444ec","size":265,"version":0,"nonce":9,"sender":"ALHF9wsXZVEuCGgmDA6ZNsCLtrb4A1g4yG","sys_fee":"0","net_fee":"0.0036521","valid_until_block":1200,"attributes":[],"cosigners":[{"account":"0x870958fd19ee3f6c7dc3c2df399d013910856e31","scopes":1}],"script":"007b0c1420728274afafc36f43a071d328cfa3e629d9cbb00c14316e851039019d39dfc2c37d6c3fee19fd58098713c00c087472616e736665720c14769162241eedf97c2481652adf1ba0f5bf57431b41627d5b5238","scripts":[{"invocation":"0c4034d02f3b97a220ffe79640e482b887ec0e44dcc95e719f5e2b43b29987f0c9822b9af0499d90094c6ad3ba191e434a3df5dd378d3b73318cf47c9f2d6d801cc8","verification":"0c2102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc20b410a906ad4"}]}]}]}`,
 		`{"jsonrpc":"2.0","method":"event_missed","params":[]}`,
 	}
 	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
diff --git a/pkg/rpc/request/txBuilder.go b/pkg/rpc/request/txBuilder.go
index 0be028eb0..05def02a3 100644
--- a/pkg/rpc/request/txBuilder.go
+++ b/pkg/rpc/request/txBuilder.go
@@ -5,77 +5,14 @@ import (
 	"fmt"
 	"strconv"
 
-	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
-	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
 	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
 	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
-	"github.com/nspcc-dev/neo-go/pkg/wallet"
-	errs "github.com/pkg/errors"
 )
 
-// CreateRawContractTransaction returns contract-type Transaction built from specified parameters.
-func CreateRawContractTransaction(params ContractTxParams) (*transaction.Transaction, error) {
-	var (
-		err                            error
-		tx                             = transaction.NewContractTX()
-		toAddressHash, fromAddressHash util.Uint160
-		fromAddress                    string
-		receiverOutput                 *transaction.Output
-
-		wif, assetID, toAddress, amount, balancer = params.WIF, params.AssetID, params.Address, params.Value, params.Balancer
-	)
-
-	fromAddress = wif.PrivateKey.Address()
-
-	if fromAddressHash, err = address.StringToUint160(fromAddress); err != nil {
-		return nil, errs.Wrapf(err, "Failed to take script hash from address: %v", fromAddress)
-	}
-
-	if toAddressHash, err = address.StringToUint160(toAddress); err != nil {
-		return nil, errs.Wrapf(err, "Failed to take script hash from address: %v", toAddress)
-	}
-	tx.Sender = fromAddressHash
-
-	if err = AddInputsAndUnspentsToTx(tx, fromAddress, assetID, amount, balancer); err != nil {
-		return nil, errs.Wrap(err, "failed to add inputs and unspents to transaction")
-	}
-	receiverOutput = transaction.NewOutput(assetID, amount, toAddressHash)
-	tx.AddOutput(receiverOutput)
-	if acc, err := wallet.NewAccountFromWIF(wif.S); err != nil {
-		return nil, err
-	} else if err = acc.SignTx(tx); err != nil {
-		return nil, errs.Wrap(err, "failed to sign tx")
-	}
-
-	return tx, nil
-}
-
-// AddInputsAndUnspentsToTx adds inputs needed to transaction and one output
-// with change.
-func AddInputsAndUnspentsToTx(tx *transaction.Transaction, addr string, assetID util.Uint256, amount util.Fixed8, balancer BalanceGetter) error {
-	scriptHash, err := address.StringToUint160(addr)
-	if err != nil {
-		return errs.Wrapf(err, "failed to take script hash from address: %v", addr)
-	}
-	inputs, spent, err := balancer.CalculateInputs(addr, assetID, amount)
-	if err != nil {
-		return errs.Wrap(err, "failed to get inputs")
-	}
-	for _, input := range inputs {
-		tx.AddInput(&input)
-	}
-
-	if senderUnspent := spent - amount; senderUnspent > 0 {
-		senderOutput := transaction.NewOutput(assetID, senderUnspent, scriptHash)
-		tx.AddOutput(senderOutput)
-	}
-	return nil
-}
-
 // DetailsToSCProperties extract the fields needed from ContractDetails
 // and converts them to smartcontract.PropertyState.
 func DetailsToSCProperties(contract *smartcontract.ContractDetails) smartcontract.PropertyState {
diff --git a/pkg/rpc/request/txTypes.go b/pkg/rpc/request/txTypes.go
deleted file mode 100644
index aebf8055f..000000000
--- a/pkg/rpc/request/txTypes.go
+++ /dev/null
@@ -1,40 +0,0 @@
-package request
-
-/*
-	Definition of types, interfaces and variables
-	required for raw transaction composing.
-*/
-
-import (
-	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
-	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-)
-
-type (
-	// ContractTxParams contains parameters for tx to transfer assets.
-	// It includes (*Client).TransferAsset call params and utility data.
-	ContractTxParams struct {
-		AssetID util.Uint256
-		Address string
-		Value   util.Fixed8
-		WIF     keys.WIF // a WIF to send the transaction
-		// since there are many ways to provide unspents,
-		// transaction composer stays agnostic to that how
-		// unspents was got;
-		Balancer BalanceGetter
-	}
-
-	// BalanceGetter is an interface supporting CalculateInputs() method.
-	BalanceGetter interface {
-		// 		parameters
-		// address: 	base58-encoded address assets would be transferred from
-		// assetID: 	asset identifier
-		// amount: 		an asset amount to spend
-		// 		return values
-		// inputs: 		UTXO's for the preparing transaction
-		// total: 		summarized asset amount from all the `inputs`
-		// error: 		error would be considered in the caller function
-		CalculateInputs(address string, assetID util.Uint256, amount util.Fixed8) (inputs []transaction.Input, total util.Fixed8, err error)
-	}
-)
diff --git a/pkg/rpc/response/result/account_state.go b/pkg/rpc/response/result/account_state.go
deleted file mode 100644
index cbff2fff9..000000000
--- a/pkg/rpc/response/result/account_state.go
+++ /dev/null
@@ -1,51 +0,0 @@
-package result
-
-import (
-	"bytes"
-	"sort"
-
-	"github.com/nspcc-dev/neo-go/pkg/core/state"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-)
-
-// AccountState wrapper used for the representation of
-// state.Account on the RPC Server.
-type AccountState struct {
-	Version    uint8        `json:"version"`
-	ScriptHash util.Uint160 `json:"script_hash"`
-	IsFrozen   bool         `json:"frozen"`
-	Balances   []Balance    `json:"balances"`
-}
-
-// Balances type for sorting balances in rpc response.
-type Balances []Balance
-
-func (b Balances) Len() int           { return len(b) }
-func (b Balances) Less(i, j int) bool { return bytes.Compare(b[i].Asset[:], b[j].Asset[:]) != -1 }
-func (b Balances) Swap(i, j int)      { b[i], b[j] = b[j], b[i] }
-
-// Balance response wrapper.
-type Balance struct {
-	Asset util.Uint256 `json:"asset"`
-	Value util.Fixed8  `json:"value"`
-}
-
-// NewAccountState creates a new Account wrapper.
-func NewAccountState(a *state.Account) AccountState {
-	balances := make(Balances, 0, len(a.Balances))
-	for k, v := range a.GetBalanceValues() {
-		balances = append(balances, Balance{
-			Asset: k,
-			Value: v,
-		})
-	}
-
-	sort.Sort(balances)
-
-	return AccountState{
-		Version:    a.Version,
-		ScriptHash: a.ScriptHash,
-		IsFrozen:   a.IsFrozen,
-		Balances:   balances,
-	}
-}
diff --git a/pkg/rpc/response/result/asset_state.go b/pkg/rpc/response/result/asset_state.go
deleted file mode 100644
index 3c3d5f38d..000000000
--- a/pkg/rpc/response/result/asset_state.go
+++ /dev/null
@@ -1,41 +0,0 @@
-package result
-
-import (
-	"github.com/nspcc-dev/neo-go/pkg/core/state"
-	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
-	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-)
-
-// AssetState wrapper used for the representation of
-// state.Asset on the RPC Server.
-type AssetState struct {
-	ID         util.Uint256          `json:"id"`
-	AssetType  transaction.AssetType `json:"type"`
-	Name       string                `json:"name"`
-	Amount     util.Fixed8           `json:"amount"`
-	Available  util.Fixed8           `json:"available"`
-	Precision  uint8                 `json:"precision"`
-	Owner      string                `json:"owner"`
-	Admin      string                `json:"admin"`
-	Issuer     string                `json:"issuer"`
-	Expiration uint32                `json:"expiration"`
-	IsFrozen   bool                  `json:"is_frozen"`
-}
-
-// NewAssetState creates a new Asset wrapper.
-func NewAssetState(a *state.Asset) AssetState {
-	return AssetState{
-		ID:         a.ID,
-		AssetType:  a.AssetType,
-		Name:       a.GetName(),
-		Amount:     a.Amount,
-		Available:  a.Available,
-		Precision:  a.Precision,
-		Owner:      a.Owner.String(),
-		Admin:      address.Uint160ToString(a.Admin),
-		Issuer:     address.Uint160ToString(a.Issuer),
-		Expiration: a.Expiration,
-		IsFrozen:   a.IsFrozen,
-	}
-}
diff --git a/pkg/rpc/response/result/block.go b/pkg/rpc/response/result/block.go
index d9517a757..bd754751f 100644
--- a/pkg/rpc/response/result/block.go
+++ b/pkg/rpc/response/result/block.go
@@ -33,7 +33,7 @@ func NewBlock(b *block.Block, chain blockchainer.Blockchainer) Block {
 		Block: b,
 		BlockMetadata: BlockMetadata{
 			Size:          io.GetVarSize(b),
-			Confirmations: chain.BlockHeight() - b.Index - 1,
+			Confirmations: chain.BlockHeight() - b.Index + 1,
 		},
 	}
 
diff --git a/pkg/rpc/response/result/claimable.go b/pkg/rpc/response/result/claimable.go
deleted file mode 100644
index 71dbc60b8..000000000
--- a/pkg/rpc/response/result/claimable.go
+++ /dev/null
@@ -1,22 +0,0 @@
-package result
-
-import "github.com/nspcc-dev/neo-go/pkg/util"
-
-// ClaimableInfo is a result of a getclaimable RPC call.
-type ClaimableInfo struct {
-	Spents    []Claimable `json:"claimable"`
-	Address   string      `json:"address"`
-	Unclaimed util.Fixed8 `json:"unclaimed"`
-}
-
-// Claimable represents spent outputs which can be claimed.
-type Claimable struct {
-	Tx          util.Uint256 `json:"txid"`
-	N           int          `json:"n"`
-	Value       util.Fixed8  `json:"value"`
-	StartHeight uint32       `json:"start_height"`
-	EndHeight   uint32       `json:"end_height"`
-	Generated   util.Fixed8  `json:"generated"`
-	SysFee      util.Fixed8  `json:"sys_fee"`
-	Unclaimed   util.Fixed8  `json:"unclaimed"`
-}
diff --git a/pkg/rpc/response/result/tx_output.go b/pkg/rpc/response/result/tx_output.go
deleted file mode 100644
index 4078de755..000000000
--- a/pkg/rpc/response/result/tx_output.go
+++ /dev/null
@@ -1,27 +0,0 @@
-package result
-
-import (
-	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
-	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-)
-
-// TransactionOutput is a wrapper to represent transaction's output.
-type TransactionOutput struct {
-	N       int         `json:"n"`
-	Asset   string      `json:"asset"`
-	Value   util.Fixed8 `json:"value"`
-	Address string      `json:"address"`
-}
-
-// NewTxOutput converts out to a TransactionOutput.
-func NewTxOutput(out *transaction.Output) *TransactionOutput {
-	addr := address.Uint160ToString(out.ScriptHash)
-
-	return &TransactionOutput{
-		N:       out.Position,
-		Asset:   "0x" + out.AssetID.String(),
-		Value:   out.Amount,
-		Address: addr,
-	}
-}
diff --git a/pkg/rpc/response/result/tx_raw_output.go b/pkg/rpc/response/result/tx_raw_output.go
index ae47dda50..e3372019d 100644
--- a/pkg/rpc/response/result/tx_raw_output.go
+++ b/pkg/rpc/response/result/tx_raw_output.go
@@ -28,10 +28,6 @@ type TransactionMetadata struct {
 func NewTransactionOutputRaw(tx *transaction.Transaction, header *block.Header, chain blockchainer.Blockchainer) TransactionOutputRaw {
 	// confirmations formula
 	confirmations := int(chain.BlockHeight() - header.Base.Index + 1)
-	// set index position
-	for i, o := range tx.Outputs {
-		o.Position = i
-	}
 	return TransactionOutputRaw{
 		Transaction: tx,
 		TransactionMetadata: TransactionMetadata{
diff --git a/pkg/rpc/response/result/unclaimed.go b/pkg/rpc/response/result/unclaimed.go
deleted file mode 100644
index f8cd8d1a9..000000000
--- a/pkg/rpc/response/result/unclaimed.go
+++ /dev/null
@@ -1,54 +0,0 @@
-package result
-
-import (
-	"github.com/nspcc-dev/neo-go/pkg/core"
-	"github.com/nspcc-dev/neo-go/pkg/core/blockchainer"
-	"github.com/nspcc-dev/neo-go/pkg/core/state"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-)
-
-// Unclaimed wrapper is used to represent getunclaimed return result.
-type Unclaimed struct {
-	Available   util.Fixed8 `json:"available"`
-	Unavailable util.Fixed8 `json:"unavailable"`
-	Unclaimed   util.Fixed8 `json:"unclaimed"`
-}
-
-// NewUnclaimed creates a new Unclaimed wrapper using given Blockchainer.
-func NewUnclaimed(a *state.Account, chain blockchainer.Blockchainer) (*Unclaimed, error) {
-	var (
-		available   util.Fixed8
-		unavailable util.Fixed8
-	)
-
-	err := a.Unclaimed.ForEach(func(ucb *state.UnclaimedBalance) error {
-		gen, sys, err := chain.CalculateClaimable(ucb.Value, ucb.Start, ucb.End)
-		if err != nil {
-			return err
-		}
-		available += gen + sys
-		return nil
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	blockHeight := chain.BlockHeight()
-	for _, usb := range a.Balances[core.GoverningTokenID()] {
-		_, txHeight, err := chain.GetTransaction(usb.Tx)
-		if err != nil {
-			return nil, err
-		}
-		gen, sys, err := chain.CalculateClaimable(usb.Value, txHeight, blockHeight)
-		if err != nil {
-			return nil, err
-		}
-		unavailable += gen + sys
-	}
-
-	return &Unclaimed{
-		Available:   available,
-		Unavailable: unavailable,
-		Unclaimed:   available + unavailable,
-	}, nil
-}
diff --git a/pkg/rpc/response/result/unspents.go b/pkg/rpc/response/result/unspents.go
deleted file mode 100644
index 9a1613b86..000000000
--- a/pkg/rpc/response/result/unspents.go
+++ /dev/null
@@ -1,57 +0,0 @@
-package result
-
-import (
-	"github.com/nspcc-dev/neo-go/pkg/core/blockchainer"
-	"github.com/nspcc-dev/neo-go/pkg/core/state"
-	"github.com/nspcc-dev/neo-go/pkg/util"
-)
-
-// UnspentBalanceInfo wrapper is used to represent single unspent asset entry
-// in `getunspents` output.
-type UnspentBalanceInfo struct {
-	Unspents    []state.UnspentBalance `json:"unspent"`
-	AssetHash   util.Uint256           `json:"asset_hash"`
-	Asset       string                 `json:"asset"`
-	AssetSymbol string                 `json:"asset_symbol"`
-	Amount      util.Fixed8            `json:"amount"`
-}
-
-// Unspents wrapper is used to represent getunspents return result.
-type Unspents struct {
-	Balance []UnspentBalanceInfo `json:"balance"`
-	Address string               `json:"address"`
-}
-
-// GlobalAssets stores a map of asset IDs to user-friendly strings ("NEO"/"GAS").
-var GlobalAssets = map[string]string{
-	"c56f33fc6ecfcd0c225c4ab356fee59390af8560be0e930faebe74a6daff7c9b": "NEO",
-	"602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7": "GAS",
-}
-
-// NewUnspents creates a new Account wrapper using given Blockchainer.
-func NewUnspents(a *state.Account, chain blockchainer.Blockchainer, addr string) Unspents {
-	res := Unspents{
-		Address: addr,
-		Balance: make([]UnspentBalanceInfo, 0, len(a.Balances)),
-	}
-	balanceValues := a.GetBalanceValues()
-	for k, v := range a.Balances {
-		name, ok := GlobalAssets[k.StringLE()]
-		if !ok {
-			as := chain.GetAssetState(k)
-			if as != nil {
-				name = as.Name
-			}
-		}
-
-		res.Balance = append(res.Balance, UnspentBalanceInfo{
-			Unspents:    v,
-			AssetHash:   k,
-			Asset:       name,
-			AssetSymbol: name,
-			Amount:      balanceValues[k],
-		})
-	}
-
-	return res
-}
diff --git a/pkg/rpc/response/types.go b/pkg/rpc/response/types.go
index ba23c7677..23e6368d2 100644
--- a/pkg/rpc/response/types.go
+++ b/pkg/rpc/response/types.go
@@ -26,12 +26,6 @@ type Raw struct {
 	Result json.RawMessage `json:"result,omitempty"`
 }
 
-// GetTxOut represents result of `gettxout` RPC call.
-type GetTxOut struct {
-	HeaderAndError
-	Result *result.TransactionOutput
-}
-
 // GetRawTx represents verbose output of `getrawtransaction` RPC call.
 type GetRawTx struct {
 	HeaderAndError
diff --git a/pkg/rpc/server/server.go b/pkg/rpc/server/server.go
index fad04857e..dbed9ab8b 100644
--- a/pkg/rpc/server/server.go
+++ b/pkg/rpc/server/server.go
@@ -79,16 +79,13 @@ const (
 )
 
 var rpcHandlers = map[string]func(*Server, request.Params) (interface{}, *response.Error){
-	"getaccountstate":      (*Server).getAccountState,
 	"getapplicationlog":    (*Server).getApplicationLog,
-	"getassetstate":        (*Server).getAssetState,
 	"getbestblockhash":     (*Server).getBestBlockHash,
 	"getblock":             (*Server).getBlock,
 	"getblockcount":        (*Server).getBlockCount,
 	"getblockhash":         (*Server).getBlockHash,
 	"getblockheader":       (*Server).getBlockHeader,
 	"getblocksysfee":       (*Server).getBlockSysFee,
-	"getclaimable":         (*Server).getClaimable,
 	"getconnectioncount":   (*Server).getConnectionCount,
 	"getcontractstate":     (*Server).getContractState,
 	"getnep5balances":      (*Server).getNEP5Balances,
@@ -98,9 +95,7 @@ var rpcHandlers = map[string]func(*Server, request.Params) (interface{}, *respon
 	"getrawtransaction":    (*Server).getrawtransaction,
 	"getstorage":           (*Server).getStorage,
 	"gettransactionheight": (*Server).getTransactionHeight,
-	"gettxout":             (*Server).getTxOut,
-	"getunclaimed":         (*Server).getUnclaimed,
-	"getunspents":          (*Server).getUnspents,
+	"getunclaimedgas":      (*Server).getUnclaimedGas,
 	"getvalidators":        (*Server).getValidators,
 	"getversion":           (*Server).getVersion,
 	"invoke":               (*Server).invoke,
@@ -387,31 +382,39 @@ func (s *Server) getConnectionCount(_ request.Params) (interface{}, *response.Er
 	return s.coreServer.PeerCount(), nil
 }
 
-func (s *Server) getBlock(reqParams request.Params) (interface{}, *response.Error) {
+func (s *Server) blockHashFromParam(param *request.Param) (util.Uint256, *response.Error) {
 	var hash util.Uint256
 
-	param, ok := reqParams.Value(0)
-	if !ok {
-		return nil, response.ErrInvalidParams
-	}
-
 	switch param.Type {
 	case request.StringT:
 		var err error
 		hash, err = param.GetUint256()
 		if err != nil {
-			return nil, response.ErrInvalidParams
+			return hash, response.ErrInvalidParams
 		}
 	case request.NumberT:
 		num, err := s.blockHeightFromParam(param)
 		if err != nil {
-			return nil, response.ErrInvalidParams
+			return hash, response.ErrInvalidParams
 		}
 		hash = s.chain.GetHeaderHash(num)
 	default:
+		return hash, response.ErrInvalidParams
+	}
+	return hash, nil
+}
+
+func (s *Server) getBlock(reqParams request.Params) (interface{}, *response.Error) {
+	param, ok := reqParams.Value(0)
+	if !ok {
 		return nil, response.ErrInvalidParams
 	}
 
+	hash, respErr := s.blockHashFromParam(param)
+	if respErr != nil {
+		return nil, respErr
+	}
+
 	block, err := s.chain.GetBlock(hash)
 	if err != nil {
 		return nil, response.NewInternalServerError(fmt.Sprintf("Problem locating block with hash: %s", hash), err)
@@ -458,7 +461,7 @@ func (s *Server) getRawMempool(_ request.Params) (interface{}, *response.Error)
 	mp := s.chain.GetMemPool()
 	hashList := make([]util.Uint256, 0)
 	for _, item := range mp.GetVerifiedTransactions() {
-		hashList = append(hashList, item.Tx.Hash())
+		hashList = append(hashList, item.Hash())
 	}
 	return hashList, nil
 }
@@ -471,24 +474,6 @@ func (s *Server) validateAddress(reqParams request.Params) (interface{}, *respon
 	return validateAddress(param.Value), nil
 }
 
-func (s *Server) getAssetState(reqParams request.Params) (interface{}, *response.Error) {
-	param, ok := reqParams.ValueWithType(0, request.StringT)
-	if !ok {
-		return nil, response.ErrInvalidParams
-	}
-
-	paramAssetID, err := param.GetUint256()
-	if err != nil {
-		return nil, response.ErrInvalidParams
-	}
-
-	as := s.chain.GetAssetState(paramAssetID)
-	if as != nil {
-		return result.NewAssetState(as), nil
-	}
-	return nil, response.NewRPCError("Unknown asset", "", nil)
-}
-
 // getApplicationLog returns the contract log based on the specified txid.
 func (s *Server) getApplicationLog(reqParams request.Params) (interface{}, *response.Error) {
 	param, ok := reqParams.Value(0)
@@ -511,69 +496,11 @@ func (s *Server) getApplicationLog(reqParams request.Params) (interface{}, *resp
 		return nil, response.NewRPCError("Error while getting transaction", "", nil)
 	}
 
-	var scriptHash util.Uint160
-	switch t := tx.Data.(type) {
-	case *transaction.InvocationTX:
-		scriptHash = hash.Hash160(t.Script)
-	default:
-		return nil, response.NewRPCError("Invalid transaction type", "", nil)
-	}
+	scriptHash := hash.Hash160(tx.Script)
 
 	return result.NewApplicationLog(appExecResult, scriptHash), nil
 }
 
-func (s *Server) getClaimable(ps request.Params) (interface{}, *response.Error) {
-	p, ok := ps.ValueWithType(0, request.StringT)
-	if !ok {
-		return nil, response.ErrInvalidParams
-	}
-	u, err := p.GetUint160FromAddress()
-	if err != nil {
-		return nil, response.ErrInvalidParams
-	}
-
-	var unclaimed []state.UnclaimedBalance
-	if acc := s.chain.GetAccountState(u); acc != nil {
-		err := acc.Unclaimed.ForEach(func(b *state.UnclaimedBalance) error {
-			unclaimed = append(unclaimed, *b)
-			return nil
-		})
-		if err != nil {
-			return nil, response.NewInternalServerError("Unclaimed processing failure", err)
-		}
-	}
-
-	var sum util.Fixed8
-	claimable := make([]result.Claimable, 0, len(unclaimed))
-	for _, ub := range unclaimed {
-		gen, sys, err := s.chain.CalculateClaimable(ub.Value, ub.Start, ub.End)
-		if err != nil {
-			s.log.Info("error while calculating claim bonus", zap.Error(err))
-			continue
-		}
-
-		uc := gen.Add(sys)
-		sum += uc
-
-		claimable = append(claimable, result.Claimable{
-			Tx:          ub.Tx,
-			N:           int(ub.Index),
-			Value:       ub.Value,
-			StartHeight: ub.Start,
-			EndHeight:   ub.End,
-			Generated:   gen,
-			SysFee:      sys,
-			Unclaimed:   uc,
-		})
-	}
-
-	return result.ClaimableInfo{
-		Spents:    claimable,
-		Address:   p.String(),
-		Unclaimed: sum,
-	}, nil
-}
-
 func (s *Server) getNEP5Balances(ps request.Params) (interface{}, *response.Error) {
 	p, ok := ps.ValueWithType(0, request.StringT)
 	if !ok {
@@ -796,40 +723,6 @@ func (s *Server) getTransactionHeight(ps request.Params) (interface{}, *response
 	return height, nil
 }
 
-func (s *Server) getTxOut(ps request.Params) (interface{}, *response.Error) {
-	p, ok := ps.Value(0)
-	if !ok {
-		return nil, response.ErrInvalidParams
-	}
-
-	h, err := p.GetUint256()
-	if err != nil {
-		return nil, response.ErrInvalidParams
-	}
-
-	p, ok = ps.ValueWithType(1, request.NumberT)
-	if !ok {
-		return nil, response.ErrInvalidParams
-	}
-
-	num, err := p.GetInt()
-	if err != nil || num < 0 {
-		return nil, response.ErrInvalidParams
-	}
-
-	tx, _, err := s.chain.GetTransaction(h)
-	if err != nil {
-		return nil, response.NewInvalidParamsError(err.Error(), err)
-	}
-
-	if num >= len(tx.Outputs) {
-		return nil, response.NewInvalidParamsError("invalid index", errors.New("too big index"))
-	}
-
-	out := tx.Outputs[num]
-	return result.NewTxOutput(&out), nil
-}
-
 // getContractState returns contract state (contract information, according to the contract script hash).
 func (s *Server) getContractState(reqParams request.Params) (interface{}, *response.Error) {
 	var results interface{}
@@ -850,42 +743,6 @@ func (s *Server) getContractState(reqParams request.Params) (interface{}, *respo
 	return results, nil
 }
 
-func (s *Server) getAccountState(ps request.Params) (interface{}, *response.Error) {
-	return s.getAccountStateAux(ps, false)
-}
-
-func (s *Server) getUnspents(ps request.Params) (interface{}, *response.Error) {
-	return s.getAccountStateAux(ps, true)
-}
-
-// getAccountState returns account state either in short or full (unspents included) form.
-func (s *Server) getAccountStateAux(reqParams request.Params, unspents bool) (interface{}, *response.Error) {
-	var resultsErr *response.Error
-	var results interface{}
-
-	param, ok := reqParams.ValueWithType(0, request.StringT)
-	if !ok {
-		return nil, response.ErrInvalidParams
-	} else if scriptHash, err := param.GetUint160FromAddress(); err != nil {
-		return nil, response.ErrInvalidParams
-	} else {
-		as := s.chain.GetAccountState(scriptHash)
-		if as == nil {
-			as = state.NewAccount(scriptHash)
-		}
-		if unspents {
-			str, err := param.GetString()
-			if err != nil {
-				return nil, response.ErrInvalidParams
-			}
-			results = result.NewUnspents(as, s.chain, str)
-		} else {
-			results = result.NewAccountState(as)
-		}
-	}
-	return results, resultsErr
-}
-
 // getBlockSysFee returns the system fees of the block, based on the specified index.
 func (s *Server) getBlockSysFee(reqParams request.Params) (interface{}, *response.Error) {
 	param, ok := reqParams.ValueWithType(0, request.NumberT)
@@ -916,13 +773,14 @@ func (s *Server) getBlockSysFee(reqParams request.Params) (interface{}, *respons
 func (s *Server) getBlockHeader(reqParams request.Params) (interface{}, *response.Error) {
 	var verbose bool
 
-	param, ok := reqParams.ValueWithType(0, request.StringT)
+	param, ok := reqParams.Value(0)
 	if !ok {
 		return nil, response.ErrInvalidParams
 	}
-	hash, err := param.GetUint256()
-	if err != nil {
-		return nil, response.ErrInvalidParams
+
+	hash, respErr := s.blockHashFromParam(param)
+	if respErr != nil {
+		return nil, respErr
 	}
 
 	param, ok = reqParams.ValueWithType(1, request.NumberT)
@@ -951,8 +809,8 @@ func (s *Server) getBlockHeader(reqParams request.Params) (interface{}, *respons
 	return hex.EncodeToString(buf.Bytes()), nil
 }
 
-// getUnclaimed returns unclaimed GAS amount of the specified address.
-func (s *Server) getUnclaimed(ps request.Params) (interface{}, *response.Error) {
+// getUnclaimedGas returns unclaimed GAS amount of the specified address.
+func (s *Server) getUnclaimedGas(ps request.Params) (interface{}, *response.Error) {
 	p, ok := ps.ValueWithType(0, request.StringT)
 	if !ok {
 		return nil, response.ErrInvalidParams
@@ -962,15 +820,12 @@ func (s *Server) getUnclaimed(ps request.Params) (interface{}, *response.Error)
 		return nil, response.ErrInvalidParams
 	}
 
-	acc := s.chain.GetAccountState(u)
-	if acc == nil {
-		return nil, response.NewInternalServerError("unknown account", nil)
+	neo, neoHeight := s.chain.GetGoverningTokenBalance(u)
+	if neo == 0 {
+		return "0", nil
 	}
-	res, errRes := result.NewUnclaimed(acc, s.chain)
-	if errRes != nil {
-		return nil, response.NewInternalServerError("can't create unclaimed response", errRes)
-	}
-	return res, nil
+	gas := s.chain.CalculateClaimable(int64(neo), neoHeight, s.chain.BlockHeight()+1) // +1 as in C#, for the next block.
+	return strconv.FormatInt(int64(gas), 10), nil                                     // It's not represented as Fixed8 in C#.
 }
 
 // getValidators returns the current NEO consensus nodes information and voting status.
diff --git a/pkg/rpc/server/server_test.go b/pkg/rpc/server/server_test.go
index 1bcb382b5..69af43432 100644
--- a/pkg/rpc/server/server_test.go
+++ b/pkg/rpc/server/server_test.go
@@ -18,13 +18,14 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/core/block"
 	"github.com/nspcc-dev/neo-go/pkg/core/blockchainer"
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
-	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
 	"github.com/nspcc-dev/neo-go/pkg/internal/testchain"
+	"github.com/nspcc-dev/neo-go/pkg/internal/testserdes"
 	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/nspcc-dev/neo-go/pkg/rpc/response"
 	"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
 	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/nspcc-dev/neo-go/pkg/wallet"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -54,12 +55,12 @@ var rpcTestCases = map[string][]rpcTestCase{
 	"getapplicationlog": {
 		{
 			name:   "positive",
-			params: `["0a0abf0188053113d0014e0cb9801d090a5d3e7640d76427fa1a3676e7cdf82e"]`,
+			params: `["5878052c7e9843786d64a9aeab16e74fabffd5abad9a0404aaf4f4bf2b6213e9"]`,
 			result: func(e *executor) interface{} { return &result.ApplicationLog{} },
 			check: func(t *testing.T, e *executor, acc interface{}) {
 				res, ok := acc.(*result.ApplicationLog)
 				require.True(t, ok)
-				expectedTxHash, err := util.Uint256DecodeStringLE("0a0abf0188053113d0014e0cb9801d090a5d3e7640d76427fa1a3676e7cdf82e")
+				expectedTxHash, err := util.Uint256DecodeStringLE("5878052c7e9843786d64a9aeab16e74fabffd5abad9a0404aaf4f4bf2b6213e9")
 				require.NoError(t, err)
 				assert.Equal(t, expectedTxHash, res.TxHash)
 				assert.Equal(t, 1, len(res.Executions))
@@ -82,45 +83,6 @@ var rpcTestCases = map[string][]rpcTestCase{
 			params: `["d24cc1d52b5c0216cbf3835bb5bac8ccf32639fa1ab6627ec4e2b9f33f7ec02f"]`,
 			fail:   true,
 		},
-		{
-			name:   "invalid tx type",
-			params: `["f9adfde059810f37b3d0686d67f6b29034e0c669537df7e59b40c14a0508b9ed"]`,
-			fail:   true,
-		},
-	},
-	"getaccountstate": {
-		{
-			name:   "positive",
-			params: `["` + testchain.MultisigAddress() + `"]`,
-			result: func(e *executor) interface{} { return &result.AccountState{} },
-			check: func(t *testing.T, e *executor, acc interface{}) {
-				res, ok := acc.(*result.AccountState)
-				require.True(t, ok)
-				assert.Equal(t, 1, len(res.Balances))
-				assert.Equal(t, false, res.IsFrozen)
-			},
-		},
-		{
-			name:   "positive null",
-			params: `["AK2nJJpJr6o664CWJKi1QRXjqeic2zRp8y"]`,
-			result: func(e *executor) interface{} { return &result.AccountState{} },
-			check: func(t *testing.T, e *executor, acc interface{}) {
-				res, ok := acc.(*result.AccountState)
-				require.True(t, ok)
-				assert.Equal(t, 0, len(res.Balances))
-				assert.Equal(t, false, res.IsFrozen)
-			},
-		},
-		{
-			name:   "no params",
-			params: `[]`,
-			fail:   true,
-		},
-		{
-			name:   "invalid address",
-			params: `["notabase58"]`,
-			fail:   true,
-		},
 	},
 	"getcontractstate": {
 		{
@@ -173,15 +135,21 @@ var rpcTestCases = map[string][]rpcTestCase{
 				rubles, err := util.Uint160DecodeStringLE(testContractHash)
 				require.NoError(t, err)
 				expected := result.NEP5Balances{
-					Balances: []result.NEP5Balance{{
-						Asset:       rubles,
-						Amount:      "8.77",
-						LastUpdated: 208,
-					},
+					Balances: []result.NEP5Balance{
+						{
+							Asset:       rubles,
+							Amount:      "8.77",
+							LastUpdated: 6,
+						},
+						{
+							Asset:       e.chain.GoverningTokenHash(),
+							Amount:      "99998000",
+							LastUpdated: 4,
+						},
 						{
 							Asset:       e.chain.UtilityTokenHash(),
-							Amount:      "10",
-							LastUpdated: 1,
+							Amount:      "1023.99976000",
+							LastUpdated: 4,
 						}},
 					Address: testchain.PrivateKeyByID(0).GetScriptHash().StringLE(),
 				}
@@ -210,47 +178,80 @@ var rpcTestCases = map[string][]rpcTestCase{
 				require.True(t, ok)
 				rublesHash, err := util.Uint160DecodeStringLE(testContractHash)
 				require.NoError(t, err)
-				blockSendRubles, err := e.chain.GetBlock(e.chain.GetHeaderHash(208))
+				blockSendRubles, err := e.chain.GetBlock(e.chain.GetHeaderHash(6))
 				require.NoError(t, err)
 				require.Equal(t, 1, len(blockSendRubles.Transactions))
 				txSendRublesHash := blockSendRubles.Transactions[0].Hash()
-				blockRecieveRubles, err := e.chain.GetBlock(e.chain.GetHeaderHash(207))
+				blockReceiveRubles, err := e.chain.GetBlock(e.chain.GetHeaderHash(5))
 				require.NoError(t, err)
-				require.Equal(t, 2, len(blockRecieveRubles.Transactions))
-				txRecieveRublesHash := blockRecieveRubles.Transactions[1].Hash()
-				blockRecieveGAS, err := e.chain.GetBlock(e.chain.GetHeaderHash(1))
+				require.Equal(t, 2, len(blockReceiveRubles.Transactions))
+				txReceiveRublesHash := blockReceiveRubles.Transactions[1].Hash()
+				blockReceiveGAS, err := e.chain.GetBlock(e.chain.GetHeaderHash(1))
 				require.NoError(t, err)
-				require.Equal(t, 1, len(blockRecieveGAS.Transactions))
-				txRecieveGASHash := blockRecieveGAS.Transactions[0].Hash()
+				require.Equal(t, 2, len(blockReceiveGAS.Transactions))
+				txReceiveNEOHash := blockReceiveGAS.Transactions[0].Hash()
+				txReceiveGASHash := blockReceiveGAS.Transactions[1].Hash()
+				blockSendNEO, err := e.chain.GetBlock(e.chain.GetHeaderHash(4))
 				require.NoError(t, err)
+				require.Equal(t, 1, len(blockSendNEO.Transactions))
+				txSendNEOHash := blockSendNEO.Transactions[0].Hash()
 				expected := result.NEP5Transfers{
-					Sent: []result.NEP5Transfer{{
-						Timestamp:   blockSendRubles.Timestamp,
-						Asset:       rublesHash,
-						Address:     testchain.PrivateKeyByID(1).Address(),
-						Amount:      "1.23",
-						Index:       208,
-						NotifyIndex: 0,
-						TxHash:      txSendRublesHash,
-					}},
+					Sent: []result.NEP5Transfer{
+						{
+							Timestamp:   blockSendRubles.Timestamp,
+							Asset:       rublesHash,
+							Address:     testchain.PrivateKeyByID(1).Address(),
+							Amount:      "1.23",
+							Index:       6,
+							NotifyIndex: 0,
+							TxHash:      txSendRublesHash,
+						},
+						{
+							Timestamp:   blockSendNEO.Timestamp,
+							Asset:       e.chain.GoverningTokenHash(),
+							Address:     testchain.PrivateKeyByID(1).Address(),
+							Amount:      "1000",
+							Index:       4,
+							NotifyIndex: 0,
+							TxHash:      txSendNEOHash,
+						},
+					},
 					Received: []result.NEP5Transfer{
 						{
-							Timestamp:   blockRecieveRubles.Timestamp,
+							Timestamp:   blockReceiveRubles.Timestamp,
 							Asset:       rublesHash,
 							Address:     address.Uint160ToString(rublesHash),
 							Amount:      "10",
-							Index:       207,
+							Index:       5,
 							NotifyIndex: 0,
-							TxHash:      txRecieveRublesHash,
+							TxHash:      txReceiveRublesHash,
 						},
 						{
-							Timestamp:   blockRecieveGAS.Timestamp,
+							Timestamp:   blockSendNEO.Timestamp,
+							Asset:       e.chain.UtilityTokenHash(),
+							Address:     "", // Minted GAS.
+							Amount:      "23.99976000",
+							Index:       4,
+							NotifyIndex: 0,
+							TxHash:      txSendNEOHash,
+						},
+						{
+							Timestamp:   blockReceiveGAS.Timestamp,
 							Asset:       e.chain.UtilityTokenHash(),
 							Address:     testchain.MultisigAddress(),
-							Amount:      "10",
+							Amount:      "1000",
 							Index:       1,
 							NotifyIndex: 0,
-							TxHash:      txRecieveGASHash,
+							TxHash:      txReceiveGASHash,
+						},
+						{
+							Timestamp:   blockReceiveGAS.Timestamp,
+							Asset:       e.chain.GoverningTokenHash(),
+							Address:     testchain.MultisigAddress(),
+							Amount:      "99999000",
+							Index:       1,
+							NotifyIndex: 0,
+							TxHash:      txReceiveNEOHash,
 						},
 					},
 					Address: testchain.PrivateKeyByID(0).Address(),
@@ -299,34 +300,6 @@ var rpcTestCases = map[string][]rpcTestCase{
 			fail:   true,
 		},
 	},
-	"getassetstate": {
-		{
-			name:   "positive",
-			params: `["f882fb865bab84b99623f21eedd902286af7da8d8a4609d7acefce04c851dc1c"]`,
-			result: func(e *executor) interface{} { return &result.AssetState{} },
-			check: func(t *testing.T, e *executor, as interface{}) {
-				res, ok := as.(*result.AssetState)
-				require.True(t, ok)
-				assert.Equal(t, "00", res.Owner)
-				assert.Equal(t, "AWKECj9RD8rS8RPcpCgYVjk1DeYyHwxZm3", res.Admin)
-			},
-		},
-		{
-			name:   "negative",
-			params: `["602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de2"]`,
-			fail:   true,
-		},
-		{
-			name:   "no params",
-			params: `[]`,
-			fail:   true,
-		},
-		{
-			name:   "invalid hash",
-			params: `["notahex"]`,
-			fail:   true,
-		},
-	},
 	"getbestblockhash": {
 		{
 			params: "[]",
@@ -340,38 +313,6 @@ var rpcTestCases = map[string][]rpcTestCase{
 			fail:   true,
 		},
 	},
-	"gettxout": {
-		{
-			name:   "no params",
-			params: `[]`,
-			fail:   true,
-		},
-		{
-			name:   "invalid hash",
-			params: `["notahex"]`,
-			fail:   true,
-		},
-		{
-			name:   "missing hash",
-			params: `["aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 0]`,
-			fail:   true,
-		},
-		{
-			name:   "invalid index",
-			params: `["7aadf91ca8ac1e2c323c025a7e492bee2dd90c783b86ebfc3b18db66b530a76d", "string"]`,
-			fail:   true,
-		},
-		{
-			name:   "negative index",
-			params: `["7aadf91ca8ac1e2c323c025a7e492bee2dd90c783b86ebfc3b18db66b530a76d", -1]`,
-			fail:   true,
-		},
-		{
-			name:   "too big index",
-			params: `["7aadf91ca8ac1e2c323c025a7e492bee2dd90c783b86ebfc3b18db66b530a76d", 100]`,
-			fail:   true,
-		},
-	},
 	"getblock": {
 		{
 			name:   "positive",
@@ -386,8 +327,6 @@ var rpcTestCases = map[string][]rpcTestCase{
 
 				assert.Equal(t, block.Hash(), res.Hash())
 				for i, tx := range res.Transactions {
-					require.Equal(t, transaction.ContractType, tx.Type)
-
 					actualTx := block.Transactions[i]
 					require.True(t, ok)
 					require.Equal(t, actualTx.Nonce, tx.Nonce)
@@ -504,40 +443,6 @@ var rpcTestCases = map[string][]rpcTestCase{
 			fail:   true,
 		},
 	},
-	"getclaimable": {
-		{
-			name:   "no params",
-			params: "[]",
-			fail:   true,
-		},
-		{
-			name:   "invalid address",
-			params: `["invalid"]`,
-			fail:   true,
-		},
-		{
-			name:   "normal address",
-			params: `["` + testchain.MultisigAddress() + `"]`,
-			result: func(*executor) interface{} {
-				// hash of the issueTx
-				h, _ := util.Uint256DecodeStringBE("d3a4f2249fe33b18bde73901c1ecc66200485f1c1dcd941b406a630b479090ae")
-				amount := util.Fixed8FromInt64(1 * 8) // (endHeight - startHeight) * genAmount[0]
-				return &result.ClaimableInfo{
-					Spents: []result.Claimable{
-						{
-							Tx:        h,
-							Value:     util.Fixed8FromInt64(100000000),
-							EndHeight: 1,
-							Generated: amount,
-							Unclaimed: amount,
-						},
-					},
-					Address:   testchain.MultisigAddress(),
-					Unclaimed: amount,
-				}
-			},
-		},
-	},
 	"getconnectioncount": {
 		{
 			params: "[]",
@@ -579,11 +484,16 @@ var rpcTestCases = map[string][]rpcTestCase{
 	"gettransactionheight": {
 		{
 			name:   "positive",
-			params: `["0e873d5d565a03c6cd39efa3b446e1901b4636c448a22bc7e8c259c5a28a2eda"]`,
+			params: `["5878052c7e9843786d64a9aeab16e74fabffd5abad9a0404aaf4f4bf2b6213e9"]`,
 			result: func(e *executor) interface{} {
-				h := 1
+				h := 0
 				return &h
 			},
+			check: func(t *testing.T, e *executor, resp interface{}) {
+				h, ok := resp.(*int)
+				require.True(t, ok)
+				assert.Equal(t, 2, *h)
+			},
 		},
 		{
 			name:   "no params",
@@ -601,7 +511,7 @@ var rpcTestCases = map[string][]rpcTestCase{
 			fail:   true,
 		},
 	},
-	"getunclaimed": {
+	"getunclaimedgas": {
 		{
 			name:   "no params",
 			params: "[]",
@@ -616,37 +526,14 @@ var rpcTestCases = map[string][]rpcTestCase{
 			name:   "positive",
 			params: `["` + testchain.MultisigAddress() + `"]`,
 			result: func(*executor) interface{} {
-				return &result.Unclaimed{}
+				var s string
+				return &s
 			},
-			check: func(t *testing.T, e *executor, uncl interface{}) {
-				res, ok := uncl.(*result.Unclaimed)
+			check: func(t *testing.T, e *executor, resp interface{}) {
+				s, ok := resp.(*string)
 				require.True(t, ok)
-				assert.Equal(t, res.Available, util.Fixed8FromInt64(8))
-				assert.True(t, res.Unavailable > 0)
-				assert.Equal(t, res.Available+res.Unavailable, res.Unclaimed)
-			},
-		},
-	},
-	"getunspents": {
-		{
-			name:   "positive",
-			params: `["` + testchain.MultisigAddress() + `"]`,
-			result: func(e *executor) interface{} { return &result.Unspents{} },
-			check: func(t *testing.T, e *executor, unsp interface{}) {
-				res, ok := unsp.(*result.Unspents)
-				require.True(t, ok)
-				require.Equal(t, 1, len(res.Balance))
-				assert.Equal(t, 1, len(res.Balance[0].Unspents))
-			},
-		},
-		{
-			name:   "positive null",
-			params: `["AK2nJJpJr6o664CWJKi1QRXjqeic2zRp8y"]`,
-			result: func(e *executor) interface{} { return &result.Unspents{} },
-			check: func(t *testing.T, e *executor, unsp interface{}) {
-				res, ok := unsp.(*result.Unspents)
-				require.True(t, ok)
-				require.Equal(t, 0, len(res.Balance))
+				// Incorrect, to be fixed later.
+				assert.Equal(t, "48000", *s)
 			},
 		},
 	},
@@ -791,7 +678,7 @@ var rpcTestCases = map[string][]rpcTestCase{
 	"sendrawtransaction": {
 		{
 			name:   "positive",
-			params: `["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"]`,
+			params: `["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"]`,
 			result: func(e *executor) interface{} {
 				v := true
 				return &v
@@ -799,7 +686,7 @@ var rpcTestCases = map[string][]rpcTestCase{
 		},
 		{
 			name:   "negative",
-			params: `["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"]`,
+			params: `["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"]`,
 			fail:   true,
 		},
 		{
@@ -929,7 +816,7 @@ func testRPCProtocol(t *testing.T, doRPCCall func(string, string, *testing.T) []
 
 		newTx := func() *transaction.Transaction {
 			height := chain.BlockHeight()
-			tx := transaction.NewContractTX()
+			tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 			tx.Nonce = height + 1
 			tx.ValidUntilBlock = height + 10
 			tx.Sender = acc0.PrivateKey().GetScriptHash()
@@ -956,26 +843,32 @@ func testRPCProtocol(t *testing.T, doRPCCall func(string, string, *testing.T) []
 
 	t.Run("getrawtransaction", func(t *testing.T) {
 		block, _ := chain.GetBlock(chain.GetHeaderHash(0))
-		TXHash := block.Transactions[0].Hash()
-		rpc := fmt.Sprintf(`{"jsonrpc": "2.0", "id": 1, "method": "getrawtransaction", "params": ["%s"]}"`, TXHash.StringLE())
+		tx := block.Transactions[0]
+		rpc := fmt.Sprintf(`{"jsonrpc": "2.0", "id": 1, "method": "getrawtransaction", "params": ["%s"]}"`, tx.Hash().StringLE())
 		body := doRPCCall(rpc, httpSrv.URL, t)
 		result := checkErrGetResult(t, body, false)
 		var res string
 		err := json.Unmarshal(result, &res)
 		require.NoErrorf(t, err, "could not parse response: %s", result)
-		assert.Equal(t, "400000000000da1745e9b549bd0bfa1a569971c77eba30cd5a4b000000000000000000000000000000000000000000455b7b226c616e67223a227a682d434e222c226e616d65223a22e5b08fe89a81e882a1227d2c7b226c616e67223a22656e222c226e616d65223a22416e745368617265227d5d0000c16ff28623000000da1745e9b549bd0bfa1a569971c77eba30cd5a4b0000000000", res)
+		txBin, err := testserdes.EncodeBinary(tx)
+		require.NoError(t, err)
+		expected := hex.EncodeToString(txBin)
+		assert.Equal(t, expected, res)
 	})
 
 	t.Run("getrawtransaction 2 arguments", func(t *testing.T) {
 		block, _ := chain.GetBlock(chain.GetHeaderHash(0))
-		TXHash := block.Transactions[0].Hash()
-		rpc := fmt.Sprintf(`{"jsonrpc": "2.0", "id": 1, "method": "getrawtransaction", "params": ["%s", 0]}"`, TXHash.StringLE())
+		tx := block.Transactions[0]
+		rpc := fmt.Sprintf(`{"jsonrpc": "2.0", "id": 1, "method": "getrawtransaction", "params": ["%s", 0]}"`, tx.Hash().StringLE())
 		body := doRPCCall(rpc, httpSrv.URL, t)
 		result := checkErrGetResult(t, body, false)
 		var res string
 		err := json.Unmarshal(result, &res)
 		require.NoErrorf(t, err, "could not parse response: %s", result)
-		assert.Equal(t, "400000000000da1745e9b549bd0bfa1a569971c77eba30cd5a4b000000000000000000000000000000000000000000455b7b226c616e67223a227a682d434e222c226e616d65223a22e5b08fe89a81e882a1227d2c7b226c616e67223a22656e222c226e616d65223a22416e745368617265227d5d0000c16ff28623000000da1745e9b549bd0bfa1a569971c77eba30cd5a4b0000000000", res)
+		txBin, err := testserdes.EncodeBinary(tx)
+		require.NoError(t, err)
+		expected := hex.EncodeToString(txBin)
+		assert.Equal(t, expected, res)
 	})
 
 	t.Run("getrawtransaction 2 arguments, verbose", func(t *testing.T) {
@@ -987,19 +880,9 @@ func testRPCProtocol(t *testing.T, doRPCCall func(string, string, *testing.T) []
 		actual := result.TransactionOutputRaw{}
 		err := json.Unmarshal(txOut, &actual)
 		require.NoErrorf(t, err, "could not parse response: %s", txOut)
-		admin, err := util.Uint160DecodeStringBE("da1745e9b549bd0bfa1a569971c77eba30cd5a4b")
-		require.NoError(t, err)
 
-		assert.Equal(t, transaction.RegisterType, actual.Transaction.Type)
-		assert.Equal(t, &transaction.RegisterTX{
-			AssetType: 0,
-			Name:      `[{"lang":"zh-CN","name":"小蚁股"},{"lang":"en","name":"AntShare"}]`,
-			Amount:    util.Fixed8FromInt64(100000000),
-			Precision: 0,
-			Owner:     keys.PublicKey{},
-			Admin:     admin,
-		}, actual.Transaction.Data.(*transaction.RegisterTX))
-		assert.Equal(t, 210, actual.Confirmations)
+		assert.Equal(t, block.Transactions[0], actual.Transaction)
+		assert.Equal(t, 8, actual.Confirmations)
 		assert.Equal(t, TXHash, actual.Transaction.Hash())
 	})
 
@@ -1028,6 +911,10 @@ func testRPCProtocol(t *testing.T, doRPCCall func(string, string, *testing.T) []
 			t.Run("verbose=0", func(t *testing.T) {
 				runCase(t, fmt.Sprintf(rpc, `["`+testHeaderHash+`", 0]`), &encoded, new(string))
 			})
+
+			t.Run("by number", func(t *testing.T) {
+				runCase(t, fmt.Sprintf(rpc, `[1]`), &encoded, new(string))
+			})
 		})
 
 		t.Run("verbose != 0", func(t *testing.T) {
@@ -1051,33 +938,15 @@ func testRPCProtocol(t *testing.T, doRPCCall func(string, string, *testing.T) []
 		})
 	})
 
-	t.Run("gettxout", func(t *testing.T) {
-		block, _ := chain.GetBlock(chain.GetHeaderHash(0))
-		require.Equal(t, 4, len(block.Transactions))
-		tx := block.Transactions[2]
-		rpc := fmt.Sprintf(`{"jsonrpc": "2.0", "id": 1, "method": "gettxout", "params": [%s, %d]}"`,
-			`"`+tx.Hash().StringLE()+`"`, 0)
-		body := doRPCCall(rpc, httpSrv.URL, t)
-		res := checkErrGetResult(t, body, false)
-
-		var txOut result.TransactionOutput
-		err := json.Unmarshal(res, &txOut)
-		require.NoErrorf(t, err, "could not parse response: %s", res)
-		assert.Equal(t, 0, txOut.N)
-		assert.Equal(t, "0x787cc0a786adfe829bc2dffc5637e6855c0a82e02deee97dedbc2aac3e0e5e1a", txOut.Asset)
-		assert.Equal(t, util.Fixed8FromInt64(100000000), txOut.Value)
-		assert.Equal(t, testchain.MultisigAddress(), txOut.Address)
-	})
-
 	t.Run("getrawmempool", func(t *testing.T) {
 		mp := chain.GetMemPool()
 		// `expected` stores hashes of previously added txs
 		expected := make([]util.Uint256, 0)
 		for _, tx := range mp.GetVerifiedTransactions() {
-			expected = append(expected, tx.Tx.Hash())
+			expected = append(expected, tx.Hash())
 		}
 		for i := 0; i < 5; i++ {
-			tx := transaction.NewContractTX()
+			tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 			assert.NoError(t, mp.Add(tx, &FeerStub{}))
 			expected = append(expected, tx.Hash())
 		}
diff --git a/pkg/rpc/server/subscription_test.go b/pkg/rpc/server/subscription_test.go
index ef0ba8155..c11265cfe 100644
--- a/pkg/rpc/server/subscription_test.go
+++ b/pkg/rpc/server/subscription_test.go
@@ -9,7 +9,6 @@ import (
 
 	"github.com/gorilla/websocket"
 	"github.com/nspcc-dev/neo-go/pkg/core"
-	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
 	"github.com/nspcc-dev/neo-go/pkg/internal/testchain"
 	"github.com/nspcc-dev/neo-go/pkg/rpc/response"
@@ -98,17 +97,12 @@ func TestSubscriptions(t *testing.T) {
 
 	for _, b := range getTestBlocks(t) {
 		require.NoError(t, chain.AddBlock(b))
-		for _, tx := range b.Transactions {
-			var mayNotify bool
-
-			if tx.Type == transaction.InvocationType {
-				resp := getNotification(t, respMsgs)
-				require.Equal(t, response.ExecutionEventID, resp.Event)
-				mayNotify = true
-			}
+		for range b.Transactions {
+			resp := getNotification(t, respMsgs)
+			require.Equal(t, response.ExecutionEventID, resp.Event)
 			for {
 				resp := getNotification(t, respMsgs)
-				if mayNotify && resp.Event == response.NotificationEventID {
+				if resp.Event == response.NotificationEventID {
 					continue
 				}
 				require.Equal(t, response.TransactionEventID, resp.Event)
diff --git a/pkg/rpc/server/testdata/testblocks.acc b/pkg/rpc/server/testdata/testblocks.acc
index bae75785b..b24ef7a0e 100644
Binary files a/pkg/rpc/server/testdata/testblocks.acc and b/pkg/rpc/server/testdata/testblocks.acc differ
diff --git a/pkg/smartcontract/context/context_test.go b/pkg/smartcontract/context/context_test.go
index 6b9dc8ab5..ecd26e3e1 100644
--- a/pkg/smartcontract/context/context_test.go
+++ b/pkg/smartcontract/context/context_test.go
@@ -12,6 +12,7 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/nspcc-dev/neo-go/pkg/vm"
+	"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
 	"github.com/nspcc-dev/neo-go/pkg/wallet"
 	"github.com/stretchr/testify/require"
 )
@@ -164,17 +165,7 @@ func newParam(typ smartcontract.ParamType, name string) wallet.ContractParam {
 }
 
 func getContractTx() *transaction.Transaction {
-	tx := transaction.NewContractTX()
-	tx.AddInput(&transaction.Input{
-		PrevHash:  util.Uint256{1, 2, 3, 4},
-		PrevIndex: 5,
-	})
-	tx.AddOutput(&transaction.Output{
-		AssetID:    util.Uint256{7, 8, 9},
-		Amount:     10,
-		ScriptHash: util.Uint160{11, 12},
-	})
-	tx.Data = new(transaction.ContractTX)
+	tx := transaction.New([]byte{byte(opcode.PUSH1)}, 0)
 	tx.Attributes = make([]transaction.Attribute, 0)
 	tx.Scripts = make([]transaction.Witness, 0)
 	tx.Hash()
diff --git a/pkg/smartcontract/parameter.go b/pkg/smartcontract/parameter.go
index 5dad09926..54eb394a5 100644
--- a/pkg/smartcontract/parameter.go
+++ b/pkg/smartcontract/parameter.go
@@ -85,7 +85,7 @@ func (p *Parameter) MarshalJSON() ([]byte, error) {
 	case MapType:
 		ppair := p.Value.([]ParameterPair)
 		resultRawValue, resultErr = json.Marshal(ppair)
-	case InteropInterfaceType:
+	case InteropInterfaceType, AnyType:
 		resultRawValue = []byte("null")
 	default:
 		resultErr = errors.Errorf("Marshaller for type %s not implemented", p.Type)
@@ -168,7 +168,7 @@ func (p *Parameter) UnmarshalJSON(data []byte) (err error) {
 			return
 		}
 		p.Value = h
-	case InteropInterfaceType:
+	case InteropInterfaceType, AnyType:
 		// stub, ignore value, it can only be null
 		p.Value = nil
 	default:
diff --git a/pkg/vm/context.go b/pkg/vm/context.go
index 08c439ac4..1cecbc4f9 100644
--- a/pkg/vm/context.go
+++ b/pkg/vm/context.go
@@ -77,12 +77,6 @@ func (c *Context) Next() (opcode.Opcode, []byte, error) {
 
 	var numtoread int
 	switch instr {
-	case opcode.OLDPUSH1:
-		// OLDPUSH1 is used during transition to NEO3 in verification scripts.
-		// FIXME remove #927
-		if len(c.prog) == 1 {
-			return opcode.PUSH1, nil, nil
-		}
 	case opcode.PUSHDATA1:
 		if c.nextip >= len(c.prog) {
 			err = errNoInstParam
diff --git a/pkg/vm/json_test.go b/pkg/vm/json_test.go
index 4c35e5641..00eb106a2 100644
--- a/pkg/vm/json_test.go
+++ b/pkg/vm/json_test.go
@@ -135,12 +135,8 @@ func testFile(t *testing.T, filename string) {
 	require.NoErrorf(t, json.Unmarshal(data, ut), "file: %s", filename)
 
 	t.Run(ut.Category+":"+ut.Name, func(t *testing.T) {
-		isRot := strings.HasSuffix(filename, "ROT.json")
 		for i := range ut.Tests {
 			test := ut.Tests[i]
-			if isRot && test.Name == "Without push" {
-				return // FIXME #927 single ROT is interpreted as PUSH1
-			}
 			t.Run(ut.Tests[i].Name, func(t *testing.T) {
 				prog := []byte(test.Script)
 				vm := load(prog)
diff --git a/pkg/vm/opcode/opcode.go b/pkg/vm/opcode/opcode.go
index b8d56666e..76149a798 100644
--- a/pkg/vm/opcode/opcode.go
+++ b/pkg/vm/opcode/opcode.go
@@ -1,6 +1,6 @@
 package opcode
 
-//go:generate stringer -type=Opcode
+//go:generate stringer -type=Opcode -linecomment
 
 // Opcode represents a single operation code for the NEO virtual machine.
 type Opcode byte
@@ -87,7 +87,6 @@ const (
 	TUCK     Opcode = 0x4E
 	SWAP     Opcode = 0x50
 	ROT      Opcode = 0x51
-	OLDPUSH1 Opcode = 0x51 // FIXME remove #927
 	ROLL     Opcode = 0x52
 	REVERSE3 Opcode = 0x53
 	REVERSE4 Opcode = 0x54
diff --git a/pkg/vm/opcode/opcode_string.go b/pkg/vm/opcode/opcode_string.go
index d5ab10d51..6b44af438 100644
--- a/pkg/vm/opcode/opcode_string.go
+++ b/pkg/vm/opcode/opcode_string.go
@@ -1,4 +1,4 @@
-// Code generated by "stringer -type Opcode -linecomment"; DO NOT EDIT.
+// Code generated by "stringer -type=Opcode -linecomment"; DO NOT EDIT.
 
 package opcode
 
@@ -77,7 +77,6 @@ func _() {
 	_ = x[TUCK-78]
 	_ = x[SWAP-80]
 	_ = x[ROT-81]
-	_ = x[OLDPUSH1-81]
 	_ = x[ROLL-82]
 	_ = x[REVERSE3-83]
 	_ = x[REVERSE4-84]