consensus: fetch dbft pre-0.2.0 version

Try out updated dBFT interface.

Signed-off-by: Anna Shaleva <shaleva.ann@nspcc.ru>

go.mod

@@ -14,7 +14,7 @@ require (
 	github.com/holiman/uint256 v1.2.4
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51
 	github.com/mr-tron/base58 v1.2.0
-	github.com/nspcc-dev/dbft v0.0.0-20230515113611-25db6ba61d5c
+	github.com/nspcc-dev/dbft v0.1.1-0.20240311071455-88b2f18461e5
 	github.com/nspcc-dev/go-ordered-json v0.0.0-20240301084351-0246b013f8b2
 	github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20231127165613-b35f351f0ba0
 	github.com/nspcc-dev/neofs-sdk-go v1.0.0-rc.11
@@ -55,7 +55,6 @@ require (
 	github.com/nspcc-dev/neofs-api-go/v2 v2.14.0 // indirect
 	github.com/nspcc-dev/neofs-crypto v0.4.0 // indirect
 	github.com/nspcc-dev/tzhash v1.7.0 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
 	github.com/prometheus/client_model v0.5.0 // indirect
 	github.com/prometheus/common v0.48.0 // indirect
 	github.com/prometheus/procfs v0.12.0 // indirect

go.sum

@@ -88,8 +88,8 @@ github.com/mmcloughlin/addchain v0.4.0/go.mod h1:A86O+tHqZLMNO4w6ZZ4FlVQEadcoqky
 github.com/mmcloughlin/profile v0.1.1/go.mod h1:IhHD7q1ooxgwTgjxQYkACGA77oFTDdFVejUS1/tS/qU=
 github.com/mr-tron/base58 v1.2.0 h1:T/HDJBh4ZCPbU39/+c3rRvE0uKBQlU27+QI8LJ4t64o=
 github.com/mr-tron/base58 v1.2.0/go.mod h1:BinMc/sQntlIE1frQmRFPUoPA1Zkr8VRgBdjWI2mNwc=
-github.com/nspcc-dev/dbft v0.0.0-20230515113611-25db6ba61d5c h1:uyK5aLbAhrnZtnvobJLN24gGUrlxIJAAFqiWl+liZuo=
+github.com/nspcc-dev/dbft v0.1.1-0.20240311071455-88b2f18461e5 h1:XK88zeGFqO/43ZTwHbNSisgxuvExYp8DB/TMbjfw1yk=
-github.com/nspcc-dev/dbft v0.0.0-20230515113611-25db6ba61d5c/go.mod h1:kjBC9F8L25GR+kIHy/1KgG/KfcoGnVwIiyovgq1uszk=
+github.com/nspcc-dev/dbft v0.1.1-0.20240311071455-88b2f18461e5/go.mod h1:oFE6paSC/yfFh9mcNU6MheMGOYXK9+sPiRk3YMoz49o=
 github.com/nspcc-dev/go-ordered-json v0.0.0-20240301084351-0246b013f8b2 h1:mD9hU3v+zJcnHAVmHnZKt3I++tvn30gBj2rP2PocZMk=
 github.com/nspcc-dev/go-ordered-json v0.0.0-20240301084351-0246b013f8b2/go.mod h1:U5VfmPNM88P4RORFb6KSUVBdJBDhlqggJZYGXGPxOcc=
 github.com/nspcc-dev/hrw v1.0.9 h1:17VcAuTtrstmFppBjfRiia4K2wA/ukXZhLFS8Y8rz5Y=
@@ -119,7 +119,6 @@ github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1y
 github.com/pierrec/lz4 v2.6.1+incompatible h1:9UY3+iC23yxF0UfGaYrGplQ+79Rg+h/q9FV9ix19jjM=
 github.com/pierrec/lz4 v2.6.1+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi+IEE17M5jbnwPHcY=
 github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
-github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=

pkg/consensus/block.go

@@ -3,8 +3,7 @@ package consensus
 import (
 	"errors"
 
-	"github.com/nspcc-dev/dbft/block"
+	"github.com/nspcc-dev/dbft"
-	"github.com/nspcc-dev/dbft/crypto"
 	"github.com/nspcc-dev/neo-go/pkg/config/netmode"
 	coreb "github.com/nspcc-dev/neo-go/pkg/core/block"
 	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
@@ -20,10 +19,10 @@ type neoBlock struct {
 	signature []byte
 }
 
-var _ block.Block = (*neoBlock)(nil)
+var _ dbft.Block[util.Uint256] = (*neoBlock)(nil)
 
 // Sign implements the block.Block interface.
-func (n *neoBlock) Sign(key crypto.PrivateKey) error {
+func (n *neoBlock) Sign(key dbft.PrivateKey) error {
 	k := key.(*privateKey)
 	sig := k.PrivateKey.SignHashable(uint32(n.network), &n.Block)
 	n.signature = sig
@@ -31,7 +30,7 @@ func (n *neoBlock) Sign(key crypto.PrivateKey) error {
 }
 
 // Verify implements the block.Block interface.
-func (n *neoBlock) Verify(key crypto.PublicKey, sign []byte) error {
+func (n *neoBlock) Verify(key dbft.PublicKey, sign []byte) error {
 	k := key.(*publicKey)
 	if k.PublicKey.VerifyHashable(sign, uint32(n.network), &n.Block) {
 		return nil
@@ -40,8 +39,8 @@ func (n *neoBlock) Verify(key crypto.PublicKey, sign []byte) error {
 }
 
 // Transactions implements the block.Block interface.
-func (n *neoBlock) Transactions() []block.Transaction {
+func (n *neoBlock) Transactions() []dbft.Transaction[util.Uint256] {
-	txes := make([]block.Transaction, len(n.Block.Transactions))
+	txes := make([]dbft.Transaction[util.Uint256], len(n.Block.Transactions))
 	for i, tx := range n.Block.Transactions {
 		txes[i] = tx
 	}
@@ -50,7 +49,7 @@ func (n *neoBlock) Transactions() []block.Transaction {
 }
 
 // SetTransactions implements the block.Block interface.
-func (n *neoBlock) SetTransactions(txes []block.Transaction) {
+func (n *neoBlock) SetTransactions(txes []dbft.Transaction[util.Uint256]) {
 	n.Block.Transactions = make([]*transaction.Transaction, len(txes))
 	for i, tx := range txes {
 		n.Block.Transactions[i] = tx.(*transaction.Transaction)

pkg/consensus/block_test.go

@@ -3,7 +3,7 @@ package consensus
 import (
 	"testing"
 
-	"github.com/nspcc-dev/dbft/block"
+	"github.com/nspcc-dev/dbft"
 	"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"
@@ -41,7 +41,7 @@ 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.New([]byte{byte(opcode.PUSH1)}, 1)}
+	txx := []dbft.Transaction[util.Uint256]{transaction.New([]byte{byte(opcode.PUSH1)}, 1)}
 	b.SetTransactions(txx)
 	require.Equal(t, txx, b.Transactions())
 }

pkg/consensus/cache_test.go

@@ -3,7 +3,7 @@ package consensus
 import (
 	"testing"
 
-	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/dbft"
 	"github.com/nspcc-dev/neo-go/internal/random"
 	"github.com/stretchr/testify/require"
 )
@@ -53,7 +53,7 @@ func getDifferentPayloads(t *testing.T, n int) (payloads []Payload) {
 		random.Fill(sign[:])
 
 		payloads[i].SetValidatorIndex(uint16(i))
-		payloads[i].SetType(payload.MessageType(commitType))
+		payloads[i].SetType(dbft.MessageType(commitType))
 		payloads[i].payload = &commit{
 			signature: sign,
 		}

pkg/consensus/change_view.go

@@ -1,7 +1,7 @@
 package consensus
 
 import (
-	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/dbft"
 	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
@@ -9,10 +9,10 @@ import (
 type changeView struct {
 	newViewNumber byte
 	timestamp     uint64
-	reason        payload.ChangeViewReason
+	reason        dbft.ChangeViewReason
 }
 
-var _ payload.ChangeView = (*changeView)(nil)
+var _ dbft.ChangeView = (*changeView)(nil)
 
 // EncodeBinary implements the io.Serializable interface.
 func (c *changeView) EncodeBinary(w *io.BinWriter) {
@@ -23,7 +23,7 @@ func (c *changeView) EncodeBinary(w *io.BinWriter) {
 // DecodeBinary implements the io.Serializable interface.
 func (c *changeView) DecodeBinary(r *io.BinReader) {
 	c.timestamp = r.ReadU64LE()
-	c.reason = payload.ChangeViewReason(r.ReadB())
+	c.reason = dbft.ChangeViewReason(r.ReadB())
 }
 
 // NewViewNumber implements the payload.ChangeView interface.
@@ -39,7 +39,7 @@ func (c changeView) Timestamp() uint64 { return c.timestamp * nsInMs }
 func (c *changeView) SetTimestamp(ts uint64) { c.timestamp = ts / nsInMs }
 
 // Reason implements the payload.ChangeView interface.
-func (c changeView) Reason() payload.ChangeViewReason { return c.reason }
+func (c changeView) Reason() dbft.ChangeViewReason { return c.reason }
 
 // SetReason implements the payload.ChangeView interface.
-func (c *changeView) SetReason(reason payload.ChangeViewReason) { c.reason = reason }
+func (c *changeView) SetReason(reason dbft.ChangeViewReason) { c.reason = reason }

pkg/consensus/commit.go

@@ -1,7 +1,7 @@
 package consensus
 
 import (
-	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/dbft"
 	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
@@ -14,7 +14,7 @@ type commit struct {
 // without a leading byte (0x04, uncompressed).
 const signatureSize = 64
 
-var _ payload.Commit = (*commit)(nil)
+var _ dbft.Commit = (*commit)(nil)
 
 // EncodeBinary implements the io.Serializable interface.
 func (c *commit) EncodeBinary(w *io.BinWriter) {

pkg/consensus/consensus.go

@@ -8,9 +8,6 @@ import (
 	"time"
 
 	"github.com/nspcc-dev/dbft"
-	"github.com/nspcc-dev/dbft/block"
-	"github.com/nspcc-dev/dbft/crypto"
-	"github.com/nspcc-dev/dbft/payload"
 	"github.com/nspcc-dev/neo-go/pkg/config"
 	"github.com/nspcc-dev/neo-go/pkg/config/netmode"
 	coreb "github.com/nspcc-dev/neo-go/pkg/core/block"
@@ -88,7 +85,7 @@ type service struct {
 	log *zap.Logger
 	// txx is a fifo cache which stores miner transactions.
 	txx  *relayCache
-	dbft *dbft.DBFT
+	dbft *dbft.DBFT[util.Uint256]
 	// messages and transactions are channels needed to process
 	// everything in single thread.
 	messages     chan Payload
@@ -181,36 +178,33 @@ func NewService(cfg Config) (Service, error) {
 		}
 	}
 
-	srv.dbft = dbft.New(
+	srv.dbft = dbft.New[util.Uint256](
-		dbft.WithLogger(srv.log),
+		dbft.WithLogger[util.Uint256](srv.log),
-		dbft.WithSecondsPerBlock(cfg.TimePerBlock),
+		dbft.WithSecondsPerBlock[util.Uint256](cfg.TimePerBlock),
-		dbft.WithGetKeyPair(srv.getKeyPair),
+		dbft.WithGetKeyPair[util.Uint256](srv.getKeyPair),
 		dbft.WithRequestTx(cfg.RequestTx),
-		dbft.WithStopTxFlow(cfg.StopTxFlow),
+		dbft.WithStopTxFlow[util.Uint256](cfg.StopTxFlow),
-		dbft.WithGetTx(srv.getTx),
+		dbft.WithGetTx[util.Uint256](srv.getTx),
-		dbft.WithGetVerified(srv.getVerifiedTx),
+		dbft.WithGetVerified[util.Uint256](srv.getVerifiedTx),
-		dbft.WithBroadcast(srv.broadcast),
+		dbft.WithBroadcast[util.Uint256](srv.broadcast),
-		dbft.WithProcessBlock(srv.processBlock),
+		dbft.WithProcessBlock[util.Uint256](srv.processBlock),
-		dbft.WithVerifyBlock(srv.verifyBlock),
+		dbft.WithVerifyBlock[util.Uint256](srv.verifyBlock),
-		dbft.WithGetBlock(srv.getBlock),
+		dbft.WithGetBlock[util.Uint256](srv.getBlock),
-		dbft.WithWatchOnly(func() bool { return false }),
+		dbft.WithWatchOnly[util.Uint256](func() bool { return false }),
-		dbft.WithNewBlockFromContext(srv.newBlockFromContext),
+		dbft.WithNewBlockFromContext[util.Uint256](srv.newBlockFromContext),
-		dbft.WithCurrentHeight(cfg.Chain.BlockHeight),
+		dbft.WithCurrentHeight[util.Uint256](cfg.Chain.BlockHeight),
 		dbft.WithCurrentBlockHash(cfg.Chain.CurrentBlockHash),
-		dbft.WithGetValidators(srv.getValidators),
+		dbft.WithGetValidators[util.Uint256](srv.getValidators),
-		dbft.WithGetConsensusAddress(srv.getConsensusAddress),
 
-		dbft.WithNewConsensusPayload(srv.newPayload),
+		dbft.WithNewConsensusPayload[util.Uint256](srv.newPayload),
-		dbft.WithNewPrepareRequest(srv.newPrepareRequest),
+		dbft.WithNewPrepareRequest[util.Uint256](srv.newPrepareRequest),
-		dbft.WithNewPrepareResponse(func() payload.PrepareResponse { return new(prepareResponse) }),
+		dbft.WithNewPrepareResponse[util.Uint256](srv.newPrepareResponse),
-		dbft.WithNewChangeView(func() payload.ChangeView { return new(changeView) }),
+		dbft.WithNewChangeView[util.Uint256](srv.newChangeView),
-		dbft.WithNewCommit(func() payload.Commit { return new(commit) }),
+		dbft.WithNewCommit[util.Uint256](srv.newCommit),
-		dbft.WithNewRecoveryRequest(func() payload.RecoveryRequest { return new(recoveryRequest) }),
+		dbft.WithNewRecoveryRequest[util.Uint256](srv.newRecoveryRequest),
-		dbft.WithNewRecoveryMessage(func() payload.RecoveryMessage {
+		dbft.WithNewRecoveryMessage[util.Uint256](srv.newRecoveryMessage),
-			return &recoveryMessage{stateRootEnabled: srv.ProtocolConfiguration.StateRootInHeader}
+		dbft.WithVerifyPrepareRequest[util.Uint256](srv.verifyRequest),
-		}),
+		dbft.WithVerifyPrepareResponse[util.Uint256](srv.verifyResponse),
-		dbft.WithVerifyPrepareRequest(srv.verifyRequest),
-		dbft.WithVerifyPrepareResponse(func(_ payload.ConsensusPayload) error { return nil }),
 	)
 
 	if srv.dbft == nil {
@@ -221,8 +215,8 @@ func NewService(cfg Config) (Service, error) {
 }
 
 var (
-	_ block.Transaction = (*transaction.Transaction)(nil)
+	_ dbft.Transaction[util.Uint256] = (*transaction.Transaction)(nil)
-	_ block.Block       = (*neoBlock)(nil)
+	_ dbft.Block[util.Uint256]       = (*neoBlock)(nil)
 )
 
 // NewPayload creates a new consensus payload for the provided network.
@@ -238,7 +232,7 @@ func NewPayload(m netmode.Magic, stateRootEnabled bool) *Payload {
 	}
 }
 
-func (s *service) newPayload(c *dbft.Context, t payload.MessageType, msg any) payload.ConsensusPayload {
+func (s *service) newPayload(c *dbft.Context[util.Uint256], t dbft.MessageType, msg any) dbft.ConsensusPayload[util.Uint256] {
 	cp := NewPayload(s.ProtocolConfiguration.Magic, s.ProtocolConfiguration.StateRootInHeader)
 	cp.SetHeight(c.BlockIndex)
 	cp.SetValidatorIndex(uint16(c.MyIndex))
@@ -246,7 +240,7 @@ func (s *service) newPayload(c *dbft.Context, t payload.MessageType, msg any) pa
 	cp.SetType(t)
 	if pr, ok := msg.(*prepareRequest); ok {
 		pr.SetPrevHash(s.dbft.PrevHash)
-		pr.SetVersion(s.dbft.Version)
+		pr.SetVersion(coreb.VersionInitial)
 	}
 	cp.SetPayload(msg)
 
@@ -257,8 +251,12 @@ func (s *service) newPayload(c *dbft.Context, t payload.MessageType, msg any) pa
 	return cp
 }
 
-func (s *service) newPrepareRequest() payload.PrepareRequest {
+func (s *service) newPrepareRequest(ts uint64, nonce uint64, transactionsHashes []util.Uint256) dbft.PrepareRequest[util.Uint256] {
-	r := new(prepareRequest)
+	r := &prepareRequest{
+		timestamp:         ts / nsInMs,
+		nonce:             nonce,
+		transactionHashes: transactionsHashes,
+	}
 	if s.ProtocolConfiguration.StateRootInHeader {
 		r.stateRootEnabled = true
 		if sr, err := s.Chain.GetStateRoot(s.dbft.BlockIndex - 1); err == nil {
@@ -270,6 +268,38 @@ func (s *service) newPrepareRequest() payload.PrepareRequest {
 	return r
 }
 
+func (s *service) newPrepareResponse(preparationHash util.Uint256) dbft.PrepareResponse[util.Uint256] {
+	return &prepareResponse{
+		preparationHash: preparationHash,
+	}
+}
+
+func (s *service) newChangeView(newViewNumber byte, reason dbft.ChangeViewReason, ts uint64) dbft.ChangeView {
+	return &changeView{
+		newViewNumber: newViewNumber,
+		timestamp:     ts / nsInMs,
+		reason:        reason,
+	}
+}
+
+func (s *service) newCommit(signature []byte) dbft.Commit {
+	c := new(commit)
+	copy(c.signature[:], signature)
+	return c
+}
+
+func (s *service) newRecoveryRequest(ts uint64) dbft.RecoveryRequest {
+	return &recoveryRequest{
+		timestamp: ts / nsInMs,
+	}
+}
+
+func (s *service) newRecoveryMessage() dbft.RecoveryMessage[util.Uint256] {
+	return &recoveryMessage{
+		stateRootEnabled: s.ProtocolConfiguration.StateRootInHeader,
+	}
+}
+
 // Name returns service name.
 func (s *service) Name() string {
 	return "consensus"
@@ -315,18 +345,18 @@ events:
 			s.Chain.UnsubscribeFromBlocks(s.blockEvents)
 			break events
 		case <-s.dbft.Timer.C():
-			hv := s.dbft.Timer.HV()
+			h, v := s.dbft.Timer.Height(), s.dbft.Timer.View()
 			s.log.Debug("timer fired",
-				zap.Uint32("height", hv.Height),
+				zap.Uint32("height", h),
-				zap.Uint("view", uint(hv.View)))
+				zap.Uint("view", uint(v)))
-			s.dbft.OnTimeout(hv)
+			s.dbft.OnTimeout(h, v)
 		case msg := <-s.messages:
 			fields := []zap.Field{
 				zap.Uint8("from", msg.message.ValidatorIndex),
 				zap.Stringer("type", msg.Type()),
 			}
 
-			if msg.Type() == payload.RecoveryMessageType {
+			if msg.Type() == dbft.RecoveryMessageType {
 				rec := msg.GetRecoveryMessage().(*recoveryMessage)
 				if rec.preparationHash == nil {
 					req := rec.GetPrepareRequest(&msg, s.dbft.Validators, uint16(s.dbft.PrimaryIndex))
@@ -389,7 +419,7 @@ func (s *service) handleChainBlock(b *coreb.Block) {
 			zap.Uint32("dbft index", s.dbft.BlockIndex),
 			zap.Uint32("chain index", s.Chain.BlockHeight()))
 		s.postBlock(b)
-		s.dbft.InitializeConsensus(0, b.Timestamp*nsInMs)
+		s.dbft.Reset(b.Timestamp * nsInMs)
 	}
 }
 
@@ -404,7 +434,7 @@ func (s *service) validatePayload(p *Payload) bool {
 	return p.Sender == h
 }
 
-func (s *service) getKeyPair(pubs []crypto.PublicKey) (int, crypto.PrivateKey, crypto.PublicKey) {
+func (s *service) getKeyPair(pubs []dbft.PublicKey) (int, dbft.PrivateKey, dbft.PublicKey) {
 	if s.wallet != nil {
 		for i := range pubs {
 			sh := pubs[i].(*publicKey).GetScriptHash()
@@ -466,7 +496,7 @@ func (s *service) OnTransaction(tx *transaction.Transaction) {
 	}
 }
 
-func (s *service) broadcast(p payload.ConsensusPayload) {
+func (s *service) broadcast(p dbft.ConsensusPayload[util.Uint256]) {
 	if err := p.(*Payload).Sign(s.dbft.Priv.(*privateKey)); err != nil {
 		s.log.Warn("can't sign consensus payload", zap.Error(err))
 	}
@@ -475,7 +505,7 @@ func (s *service) broadcast(p payload.ConsensusPayload) {
 	s.Config.Broadcast(ep)
 }
 
-func (s *service) getTx(h util.Uint256) block.Transaction {
+func (s *service) getTx(h util.Uint256) dbft.Transaction[util.Uint256] {
 	if tx := s.txx.Get(h); tx != nil {
 		return tx.(*transaction.Transaction)
 	}
@@ -491,7 +521,7 @@ func (s *service) getTx(h util.Uint256) block.Transaction {
 	return nil
 }
 
-func (s *service) verifyBlock(b block.Block) bool {
+func (s *service) verifyBlock(b dbft.Block[util.Uint256]) bool {
 	coreb := &b.(*neoBlock).Block
 
 	if s.Chain.BlockHeight() >= coreb.Index {
@@ -558,12 +588,12 @@ var (
 	errInvalidTransactionsCount = errors.New("invalid transactions count")
 )
 
-func (s *service) verifyRequest(p payload.ConsensusPayload) error {
+func (s *service) verifyRequest(p dbft.ConsensusPayload[util.Uint256]) error {
 	req := p.GetPrepareRequest().(*prepareRequest)
 	if req.prevHash != s.dbft.PrevHash {
 		return errInvalidPrevHash
 	}
-	if req.version != s.dbft.Version {
+	if req.version != coreb.VersionInitial {
 		return errInvalidVersion
 	}
 	if s.ProtocolConfiguration.StateRootInHeader {
@@ -583,7 +613,11 @@ func (s *service) verifyRequest(p payload.ConsensusPayload) error {
 	return nil
 }
 
-func (s *service) processBlock(b block.Block) {
+func (s *service) verifyResponse(p dbft.ConsensusPayload[util.Uint256]) error {
+	return nil
+}
+
+func (s *service) processBlock(b dbft.Block[util.Uint256]) {
 	bb := &b.(*neoBlock).Block
 	bb.Script = *(s.getBlockWitness(bb))
 
@@ -638,7 +672,7 @@ func (s *service) getBlockWitness(b *coreb.Block) *transaction.Witness {
 	}
 }
 
-func (s *service) getBlock(h util.Uint256) block.Block {
+func (s *service) getBlock(h util.Uint256) dbft.Block[util.Uint256] {
 	b, err := s.Chain.GetBlock(h)
 	if err != nil {
 		return nil
@@ -647,7 +681,7 @@ func (s *service) getBlock(h util.Uint256) block.Block {
 	return &neoBlock{network: s.ProtocolConfiguration.Magic, Block: *b}
 }
 
-func (s *service) getVerifiedTx() []block.Transaction {
+func (s *service) getVerifiedTx() []dbft.Transaction[util.Uint256] {
 	pool := s.Config.Chain.GetMemPool()
 
 	var txx []*transaction.Transaction
@@ -671,7 +705,7 @@ func (s *service) getVerifiedTx() []block.Transaction {
 		txx = s.Config.Chain.ApplyPolicyToTxSet(txx)
 	}
 
-	res := make([]block.Transaction, len(txx))
+	res := make([]dbft.Transaction[util.Uint256], len(txx))
 	for i := range txx {
 		res[i] = txx[i]
 	}
@@ -679,7 +713,7 @@ func (s *service) getVerifiedTx() []block.Transaction {
 	return res
 }
 
-func (s *service) getValidators(txes ...block.Transaction) []crypto.PublicKey {
+func (s *service) getValidators(txes ...dbft.Transaction[util.Uint256]) []dbft.PublicKey {
 	var (
 		pKeys []*keys.PublicKey
 		err   error
@@ -699,7 +733,7 @@ func (s *service) getValidators(txes ...block.Transaction) []crypto.PublicKey {
 		s.log.Error("error while trying to get validators", zap.Error(err))
 	}
 
-	pubs := make([]crypto.PublicKey, len(pKeys))
+	pubs := make([]dbft.PublicKey, len(pKeys))
 	for i := range pKeys {
 		pubs[i] = &publicKey{PublicKey: pKeys[i]}
 	}
@@ -707,11 +741,7 @@ func (s *service) getValidators(txes ...block.Transaction) []crypto.PublicKey {
 	return pubs
 }
 
-func (s *service) getConsensusAddress(validators ...crypto.PublicKey) util.Uint160 {
+func convertKeys(validators []dbft.PublicKey) (pubs []*keys.PublicKey) {
-	return util.Uint160{}
-}
-
-func convertKeys(validators []crypto.PublicKey) (pubs []*keys.PublicKey) {
 	pubs = make([]*keys.PublicKey, len(validators))
 	for i, k := range validators {
 		pubs[i] = k.(*publicKey).PublicKey
@@ -720,7 +750,7 @@ func convertKeys(validators []crypto.PublicKey) (pubs []*keys.PublicKey) {
 	return
 }
 
-func (s *service) newBlockFromContext(ctx *dbft.Context) block.Block {
+func (s *service) newBlockFromContext(ctx *dbft.Context[util.Uint256]) dbft.Block[util.Uint256] {
 	block := &neoBlock{network: s.ProtocolConfiguration.Magic}
 
 	block.Block.Timestamp = ctx.Timestamp / nsInMs
@@ -750,9 +780,9 @@ func (s *service) newBlockFromContext(ctx *dbft.Context) block.Block {
 	if err != nil {
 		s.log.Fatal(fmt.Sprintf("failed to create multisignature script: %s", err.Error()))
 	}
-	block.Block.NextConsensus = crypto.Hash160(script)
+	block.Block.NextConsensus = hash.Hash160(script)
 	block.Block.PrevHash = ctx.PrevHash
-	block.Block.Version = ctx.Version
+	block.Block.Version = coreb.VersionInitial
 
 	primaryIndex := byte(ctx.PrimaryIndex)
 	block.Block.PrimaryIndex = primaryIndex

pkg/consensus/consensus_test.go

@@ -4,9 +4,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/nspcc-dev/dbft/block"
+	"github.com/nspcc-dev/dbft"
-	"github.com/nspcc-dev/dbft/payload"
-	"github.com/nspcc-dev/dbft/timer"
 	"github.com/nspcc-dev/neo-go/internal/random"
 	"github.com/nspcc-dev/neo-go/internal/testchain"
 	"github.com/nspcc-dev/neo-go/pkg/config"
@@ -38,7 +36,7 @@ func TestNewService(t *testing.T) {
 	signTx(t, srv.Chain, tx)
 	require.NoError(t, srv.Chain.PoolTx(tx))
 
-	var txx []block.Transaction
+	var txx []dbft.Transaction[util.Uint256]
 	require.NotPanics(t, func() { txx = srv.getVerifiedTx() })
 	require.Len(t, txx, 1)
 	require.Equal(t, tx, txx[0])
@@ -65,10 +63,10 @@ func TestNewWatchingService(t *testing.T) {
 
 func collectBlock(t *testing.T, bc *core.Blockchain, srv *service) {
 	h := bc.BlockHeight()
-	srv.dbft.OnTimeout(timer.HV{Height: srv.dbft.Context.BlockIndex}) // Collect and add block to the chain.
+	srv.dbft.OnTimeout(srv.dbft.Context.BlockIndex, 0) // Collect and add block to the chain.
 	header, err := bc.GetHeader(bc.GetHeaderHash(h + 1))
 	require.NoError(t, err)
-	srv.dbft.InitializeConsensus(0, header.Timestamp*nsInMs) // Init consensus manually at the next height, as we don't run the consensus service.
+	srv.dbft.Reset(header.Timestamp * nsInMs) // Init consensus manually at the next height, as we don't run the consensus service.
 }
 
 func initServiceNextConsensus(t *testing.T, newAcc *wallet.Account, offset uint32) (*service, *wallet.Account) {
@@ -102,7 +100,7 @@ func initServiceNextConsensus(t *testing.T, newAcc *wallet.Account, offset uint3
 	srv.dbft.Start(0)
 	header, err := bc.GetHeader(bc.GetHeaderHash(h + 1))
 	require.NoError(t, err)
-	srv.dbft.InitializeConsensus(0, header.Timestamp*nsInMs) // Init consensus manually at the next height, as we don't run the consensus service.
+	srv.dbft.Reset(header.Timestamp * nsInMs) // Init consensus manually at the next height, as we don't run the consensus service.
 
 	// Register new candidate.
 	b.Reset()
@@ -214,10 +212,10 @@ func TestService_GetVerified(t *testing.T) {
 		p := new(Payload)
 		// One PrepareRequest and three ChangeViews.
 		if i == 1 {
-			p.SetType(payload.PrepareRequestType)
+			p.SetType(dbft.PrepareRequestType)
 			p.SetPayload(&prepareRequest{prevHash: srv.Chain.CurrentBlockHash(), transactionHashes: hashes})
 		} else {
-			p.SetType(payload.ChangeViewType)
+			p.SetType(dbft.ChangeViewType)
 			p.SetPayload(&changeView{newViewNumber: 1, timestamp: uint64(time.Now().UnixNano() / nsInMs)})
 		}
 		p.SetHeight(1)

pkg/consensus/payload.go

@@ -3,7 +3,7 @@ package consensus
 import (
 	"fmt"
 
-	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/dbft"
 	"github.com/nspcc-dev/neo-go/pkg/config/netmode"
 	"github.com/nspcc-dev/neo-go/pkg/io"
 	npayload "github.com/nspcc-dev/neo-go/pkg/network/payload"
@@ -55,12 +55,12 @@ func (p *Payload) SetViewNumber(view byte) {
 }
 
 // Type implements the payload.ConsensusPayload interface.
-func (p Payload) Type() payload.MessageType {
+func (p Payload) Type() dbft.MessageType {
-	return payload.MessageType(p.message.Type)
+	return dbft.MessageType(p.message.Type)
 }
 
 // SetType implements the payload.ConsensusPayload interface.
-func (p *Payload) SetType(t payload.MessageType) {
+func (p *Payload) SetType(t dbft.MessageType) {
 	p.message.Type = messageType(t)
 }
 
@@ -75,29 +75,29 @@ func (p *Payload) SetPayload(pl any) {
 }
 
 // GetChangeView implements the payload.ConsensusPayload interface.
-func (p Payload) GetChangeView() payload.ChangeView { return p.payload.(payload.ChangeView) }
+func (p Payload) GetChangeView() dbft.ChangeView { return p.payload.(dbft.ChangeView) }
 
 // GetPrepareRequest implements the payload.ConsensusPayload interface.
-func (p Payload) GetPrepareRequest() payload.PrepareRequest {
+func (p Payload) GetPrepareRequest() dbft.PrepareRequest[util.Uint256] {
-	return p.payload.(payload.PrepareRequest)
+	return p.payload.(dbft.PrepareRequest[util.Uint256])
 }
 
 // GetPrepareResponse implements the payload.ConsensusPayload interface.
-func (p Payload) GetPrepareResponse() payload.PrepareResponse {
+func (p Payload) GetPrepareResponse() dbft.PrepareResponse[util.Uint256] {
-	return p.payload.(payload.PrepareResponse)
+	return p.payload.(dbft.PrepareResponse[util.Uint256])
 }
 
 // GetCommit implements the payload.ConsensusPayload interface.
-func (p Payload) GetCommit() payload.Commit { return p.payload.(payload.Commit) }
+func (p Payload) GetCommit() dbft.Commit { return p.payload.(dbft.Commit) }
 
 // GetRecoveryRequest implements the payload.ConsensusPayload interface.
-func (p Payload) GetRecoveryRequest() payload.RecoveryRequest {
+func (p Payload) GetRecoveryRequest() dbft.RecoveryRequest {
-	return p.payload.(payload.RecoveryRequest)
+	return p.payload.(dbft.RecoveryRequest)
 }
 
 // GetRecoveryMessage implements the payload.ConsensusPayload interface.
-func (p Payload) GetRecoveryMessage() payload.RecoveryMessage {
+func (p Payload) GetRecoveryMessage() dbft.RecoveryMessage[util.Uint256] {
-	return p.payload.(payload.RecoveryMessage)
+	return p.payload.(dbft.RecoveryMessage[util.Uint256])
 }
 
 // ValidatorIndex implements the payload.ConsensusPayload interface.

pkg/consensus/payload_test.go

@@ -6,7 +6,7 @@ import (
 	"math/rand"
 	"testing"
 
-	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/dbft"
 	"github.com/nspcc-dev/neo-go/internal/random"
 	"github.com/nspcc-dev/neo-go/internal/testserdes"
 	"github.com/nspcc-dev/neo-go/pkg/config/netmode"
@@ -47,8 +47,8 @@ func TestConsensusPayload_Setters(t *testing.T) {
 	p.SetViewNumber(2)
 	assert.EqualValues(t, 2, p.ViewNumber())
 
-	p.SetType(payload.PrepareRequestType)
+	p.SetType(dbft.PrepareRequestType)
-	assert.Equal(t, payload.PrepareRequestType, p.Type())
+	assert.Equal(t, dbft.PrepareRequestType, p.Type())
 
 	pl := randomMessage(t, prepareRequestType)
 	p.SetPayload(pl)
@@ -290,7 +290,7 @@ func TestPayload_DecodeFromPrivnet(t *testing.T) {
 	p := NewPayload(netmode.PrivNet, false)
 	p.DecodeBinary(buf)
 	require.NoError(t, buf.Err)
-	require.Equal(t, payload.CommitType, p.Type())
+	require.Equal(t, dbft.CommitType, p.Type())
 	require.Equal(t, uint32(2), p.Height())
 	require.Equal(t, uint16(3), p.ValidatorIndex())
 	require.Equal(t, byte(0), p.ViewNumber())

pkg/consensus/prepare_request.go

@@ -1,7 +1,7 @@
 package consensus
 
 import (
-	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/dbft"
 	"github.com/nspcc-dev/neo-go/pkg/core/block"
 	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/nspcc-dev/neo-go/pkg/util"
@@ -18,7 +18,7 @@ type prepareRequest struct {
 	stateRoot         util.Uint256
 }
 
-var _ payload.PrepareRequest = (*prepareRequest)(nil)
+var _ dbft.PrepareRequest[util.Uint256] = (*prepareRequest)(nil)
 
 // EncodeBinary implements the io.Serializable interface.
 func (p *prepareRequest) EncodeBinary(w *io.BinWriter) {

pkg/consensus/prepare_response.go

@@ -1,7 +1,7 @@
 package consensus
 
 import (
-	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/dbft"
 	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 )
@@ -11,7 +11,7 @@ type prepareResponse struct {
 	preparationHash util.Uint256
 }
 
-var _ payload.PrepareResponse = (*prepareResponse)(nil)
+var _ dbft.PrepareResponse[util.Uint256] = (*prepareResponse)(nil)
 
 // EncodeBinary implements the io.Serializable interface.
 func (p *prepareResponse) EncodeBinary(w *io.BinWriter) {
@@ -25,6 +25,3 @@ func (p *prepareResponse) DecodeBinary(r *io.BinReader) {
 
 // PreparationHash implements the payload.PrepareResponse interface.
 func (p *prepareResponse) PreparationHash() util.Uint256 { return p.preparationHash }
-
-// SetPreparationHash implements the payload.PrepareResponse interface.
-func (p *prepareResponse) SetPreparationHash(h util.Uint256) { p.preparationHash = h }

pkg/consensus/prepare_response_test.go

@@ -8,8 +8,9 @@ import (
 )
 
 func TestPrepareResponse_Setters(t *testing.T) {
-	var p prepareResponse
+	var p = prepareResponse{
+		preparationHash: util.Uint256{1, 2, 3},
+	}
 
-	p.SetPreparationHash(util.Uint256{1, 2, 3})
 	require.Equal(t, util.Uint256{1, 2, 3}, p.PreparationHash())
 }

pkg/consensus/recovery_message.go

@@ -3,8 +3,7 @@ package consensus
 import (
 	"errors"
 
-	"github.com/nspcc-dev/dbft/crypto"
+	"github.com/nspcc-dev/dbft"
-	"github.com/nspcc-dev/dbft/payload"
 	"github.com/nspcc-dev/neo-go/pkg/io"
 	npayload "github.com/nspcc-dev/neo-go/pkg/network/payload"
 	"github.com/nspcc-dev/neo-go/pkg/util"
@@ -41,7 +40,7 @@ type (
 	}
 )
 
-var _ payload.RecoveryMessage = (*recoveryMessage)(nil)
+var _ dbft.RecoveryMessage[util.Uint256] = (*recoveryMessage)(nil)
 
 // DecodeBinary implements the io.Serializable interface.
 func (m *recoveryMessage) DecodeBinary(r *io.BinReader) {
@@ -139,11 +138,11 @@ func (p *preparationCompact) EncodeBinary(w *io.BinWriter) {
 }
 
 // AddPayload implements the payload.RecoveryMessage interface.
-func (m *recoveryMessage) AddPayload(p payload.ConsensusPayload) {
+func (m *recoveryMessage) AddPayload(p dbft.ConsensusPayload[util.Uint256]) {
 	validator := uint8(p.ValidatorIndex())
 
 	switch p.Type() {
-	case payload.PrepareRequestType:
+	case dbft.PrepareRequestType:
 		m.prepareRequest = &message{
 			Type:             prepareRequestType,
 			ViewNumber:       p.ViewNumber(),
@@ -156,24 +155,24 @@ func (m *recoveryMessage) AddPayload(p payload.ConsensusPayload) {
 			ValidatorIndex:   validator,
 			InvocationScript: p.(*Payload).Witness.InvocationScript,
 		})
-	case payload.PrepareResponseType:
+	case dbft.PrepareResponseType:
 		m.preparationPayloads = append(m.preparationPayloads, &preparationCompact{
 			ValidatorIndex:   validator,
 			InvocationScript: p.(*Payload).Witness.InvocationScript,
 		})
 
 		if m.preparationHash == nil {
-			h := p.GetPrepareResponse().PreparationHash()
+			h := p.GetPrepareResponse().(*prepareResponse).preparationHash
 			m.preparationHash = &h
 		}
-	case payload.ChangeViewType:
+	case dbft.ChangeViewType:
 		m.changeViewPayloads = append(m.changeViewPayloads, &changeViewCompact{
 			ValidatorIndex:     validator,
 			OriginalViewNumber: p.ViewNumber(),
-			Timestamp:          p.GetChangeView().Timestamp() / nsInMs,
+			Timestamp:          p.GetChangeView().(*changeView).timestamp,
 			InvocationScript:   p.(*Payload).Witness.InvocationScript,
 		})
-	case payload.CommitType:
+	case dbft.CommitType:
 		m.commitPayloads = append(m.commitPayloads, &commitCompact{
 			ValidatorIndex:   validator,
 			ViewNumber:       p.ViewNumber(),
@@ -184,7 +183,7 @@ func (m *recoveryMessage) AddPayload(p payload.ConsensusPayload) {
 }
 
 // GetPrepareRequest implements the payload.RecoveryMessage interface.
-func (m *recoveryMessage) GetPrepareRequest(p payload.ConsensusPayload, validators []crypto.PublicKey, primary uint16) payload.ConsensusPayload {
+func (m *recoveryMessage) GetPrepareRequest(p dbft.ConsensusPayload[util.Uint256], validators []dbft.PublicKey, primary uint16) dbft.ConsensusPayload[util.Uint256] {
 	if m.prepareRequest == nil {
 		return nil
 	}
@@ -211,12 +210,12 @@ func (m *recoveryMessage) GetPrepareRequest(p payload.ConsensusPayload, validato
 }
 
 // GetPrepareResponses implements the payload.RecoveryMessage interface.
-func (m *recoveryMessage) GetPrepareResponses(p payload.ConsensusPayload, validators []crypto.PublicKey) []payload.ConsensusPayload {
+func (m *recoveryMessage) GetPrepareResponses(p dbft.ConsensusPayload[util.Uint256], validators []dbft.PublicKey) []dbft.ConsensusPayload[util.Uint256] {
 	if m.preparationHash == nil {
 		return nil
 	}
 
-	ps := make([]payload.ConsensusPayload, len(m.preparationPayloads))
+	ps := make([]dbft.ConsensusPayload[util.Uint256], len(m.preparationPayloads))
 
 	for i, resp := range m.preparationPayloads {
 		r := fromPayload(prepareResponseType, p.(*Payload), &prepareResponse{
@@ -234,8 +233,8 @@ func (m *recoveryMessage) GetPrepareResponses(p payload.ConsensusPayload, valida
 }
 
 // GetChangeViews implements the payload.RecoveryMessage interface.
-func (m *recoveryMessage) GetChangeViews(p payload.ConsensusPayload, validators []crypto.PublicKey) []payload.ConsensusPayload {
+func (m *recoveryMessage) GetChangeViews(p dbft.ConsensusPayload[util.Uint256], validators []dbft.PublicKey) []dbft.ConsensusPayload[util.Uint256] {
-	ps := make([]payload.ConsensusPayload, len(m.changeViewPayloads))
+	ps := make([]dbft.ConsensusPayload[util.Uint256], len(m.changeViewPayloads))
 
 	for i, cv := range m.changeViewPayloads {
 		c := fromPayload(changeViewType, p.(*Payload), &changeView{
@@ -255,8 +254,8 @@ func (m *recoveryMessage) GetChangeViews(p payload.ConsensusPayload, validators
 }
 
 // GetCommits implements the payload.RecoveryMessage interface.
-func (m *recoveryMessage) GetCommits(p payload.ConsensusPayload, validators []crypto.PublicKey) []payload.ConsensusPayload {
+func (m *recoveryMessage) GetCommits(p dbft.ConsensusPayload[util.Uint256], validators []dbft.PublicKey) []dbft.ConsensusPayload[util.Uint256] {
-	ps := make([]payload.ConsensusPayload, len(m.commitPayloads))
+	ps := make([]dbft.ConsensusPayload[util.Uint256], len(m.commitPayloads))
 
 	for i, c := range m.commitPayloads {
 		cc := fromPayload(commitType, p.(*Payload), &commit{signature: c.Signature})
@@ -281,7 +280,7 @@ func (m *recoveryMessage) SetPreparationHash(h *util.Uint256) {
 	m.preparationHash = h
 }
 
-func getVerificationScript(i uint8, validators []crypto.PublicKey) []byte {
+func getVerificationScript(i uint8, validators []dbft.PublicKey) []byte {
 	if int(i) >= len(validators) {
 		return nil
 	}

pkg/consensus/recovery_message_test.go

@@ -3,8 +3,7 @@ package consensus
 import (
 	"testing"
 
-	"github.com/nspcc-dev/dbft/crypto"
+	"github.com/nspcc-dev/dbft"
-	"github.com/nspcc-dev/dbft/payload"
 	"github.com/nspcc-dev/neo-go/internal/testchain"
 	"github.com/nspcc-dev/neo-go/pkg/config/netmode"
 	"github.com/nspcc-dev/neo-go/pkg/util"
@@ -23,7 +22,7 @@ func TestRecoveryMessageSetters(t *testing.T) {
 func testRecoveryMessageSetters(t *testing.T, enableStateRoot bool) {
 	srv := newTestServiceWithState(t, enableStateRoot)
 	privs := make([]*privateKey, testchain.Size())
-	pubs := make([]crypto.PublicKey, testchain.Size())
+	pubs := make([]dbft.PublicKey, testchain.Size())
 	for i := 0; i < testchain.Size(); i++ {
 		privs[i], pubs[i] = getTestValidator(i)
 	}
@@ -32,7 +31,7 @@ func testRecoveryMessageSetters(t *testing.T, enableStateRoot bool) {
 
 	r := &recoveryMessage{stateRootEnabled: enableStateRoot}
 	p := NewPayload(netmode.UnitTestNet, enableStateRoot)
-	p.SetType(payload.RecoveryMessageType)
+	p.SetType(dbft.RecoveryMessageType)
 	p.SetHeight(msgHeight)
 	p.SetPayload(r)
 	// sign payload to have verification script
@@ -44,7 +43,7 @@ func testRecoveryMessageSetters(t *testing.T, enableStateRoot bool) {
 		stateRootEnabled:  enableStateRoot,
 	}
 	p1 := NewPayload(netmode.UnitTestNet, enableStateRoot)
-	p1.SetType(payload.PrepareRequestType)
+	p1.SetType(dbft.PrepareRequestType)
 	p1.SetHeight(msgHeight)
 	p1.SetPayload(req)
 	p1.SetValidatorIndex(0)
@@ -53,7 +52,7 @@ func testRecoveryMessageSetters(t *testing.T, enableStateRoot bool) {
 
 	t.Run("prepare response is added", func(t *testing.T) {
 		p2 := NewPayload(netmode.UnitTestNet, enableStateRoot)
-		p2.SetType(payload.PrepareResponseType)
+		p2.SetType(dbft.PrepareResponseType)
 		p2.SetHeight(msgHeight)
 		p2.SetPayload(&prepareResponse{
 			preparationHash: p1.Hash(),
@@ -91,7 +90,7 @@ func testRecoveryMessageSetters(t *testing.T, enableStateRoot bool) {
 
 	t.Run("change view is added", func(t *testing.T) {
 		p3 := NewPayload(netmode.UnitTestNet, enableStateRoot)
-		p3.SetType(payload.ChangeViewType)
+		p3.SetType(dbft.ChangeViewType)
 		p3.SetHeight(msgHeight)
 		p3.SetPayload(&changeView{
 			newViewNumber: 1,
@@ -115,7 +114,7 @@ func testRecoveryMessageSetters(t *testing.T, enableStateRoot bool) {
 
 	t.Run("commit is added", func(t *testing.T) {
 		p4 := NewPayload(netmode.UnitTestNet, enableStateRoot)
-		p4.SetType(payload.CommitType)
+		p4.SetType(dbft.CommitType)
 		p4.SetHeight(msgHeight)
 		p4.SetPayload(randomMessage(t, commitType))
 		p4.SetValidatorIndex(3)

pkg/consensus/recovery_request.go

@@ -1,7 +1,7 @@
 package consensus
 
 import (
-	"github.com/nspcc-dev/dbft/payload"
+	"github.com/nspcc-dev/dbft"
 	"github.com/nspcc-dev/neo-go/pkg/io"
 )
 
@@ -10,7 +10,7 @@ type recoveryRequest struct {
 	timestamp uint64
 }
 
-var _ payload.RecoveryRequest = (*recoveryRequest)(nil)
+var _ dbft.RecoveryRequest = (*recoveryRequest)(nil)
 
 // DecodeBinary implements the io.Serializable interface.
 func (m *recoveryRequest) DecodeBinary(r *io.BinReader) {

pkg/core/block/header.go

@@ -13,6 +13,9 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
+// VersionInitial is the default Neo block version.
+const VersionInitial uint32 = 0
+
 // Header holds the base info of a block.
 type Header struct {
 	// Version of the block.