[#131] nns: Declare getAllRecords() as safe

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

.forgejo/workflows/dco.yml

@@ -13,7 +13,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v3
         with:
-          go-version: '1.21'
+          go-version: '1.23'
 
       - name: Run commit format checker
         uses: https://git.frostfs.info/TrueCloudLab/dco-go@v3

.forgejo/workflows/tests.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go_versions: [ '1.21', '1.22' ]
+        go_versions: [ '1.22', '1.23' ]
       fail-fast: false
     steps:
       - uses: actions/checkout@v3

.github/CODEOWNERS

@@ -1 +0,0 @@
-*   @carpawell @fyrchik @cthulhu-rider

CHANGELOG.md

@@ -8,7 +8,17 @@ Changelog for FrostFS Contract
 ### Removed
 ### Updated
 ### Fixed
-### Updating from v0.18.0
+
+## [0.20.0]
+
+### Added
+- Add `ListFullSubjects` method to the frostfsid RPC client (#107)
+- Add `ListChainNames` method to the policy contract (#105)
+- Add `DeleteRecord` method to the nns contract (#114)
+- Emit notification on record changes in nns contract (#109)
+
+### Updated
+- neo-go to v0.106.3
 
 ## [0.18.0] - 2023-09-14 - Academy of Sciences Glacier
 

CODEOWNERS

@@ -0,0 +1,5 @@
+.forgejo/.*           @potyarkin
+Makefile              @potyarkin
+frostfsid/client/.*   @dkirillov
+.*                    @TrueCloudLab/storage-core-developers @TrueCloudLab/storage-core-committers @TrueCloudLab/storage-service-developers @TrueCloudLab/storage-service-committers
+tests/.*              @fyrchik

README.md

@@ -1,5 +1,5 @@
 <p align="center">
-<img src="./.github/logo.svg" width="500px" alt="FrostFS">
+<img src="./.forgejo/logo.svg" width="500px" alt="FrostFS">
 </p>
 <p align="center">
   <a href="https://frostfs.info">FrostFS</a> related smart contracts.

VERSION

@@ -1 +1 @@
-v0.19.1
+v0.20.0

common/version.go

@@ -4,15 +4,15 @@ import "github.com/nspcc-dev/neo-go/pkg/interop/native/std"
 
 const (
 	major = 0
-	minor = 19
-	patch = 1
+	minor = 20
+	patch = 0
 
 	// Versions from which an update should be performed.
 	// These should be used in a group (so prevMinor can be equal to minor if there are
 	// any migration routines.
 	prevMajor = 0
-	prevMinor = 18
-	prevPatch = 0
+	prevMinor = 19
+	prevPatch = 3
 
 	Version = major*1_000_000 + minor*1_000 + patch
 

commonclient/waiter.go

@@ -0,0 +1,84 @@
+package commonclient
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"github.com/nspcc-dev/neo-go/pkg/rpcclient/waiter"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm/vmstate"
+)
+
+const alreadyExistsError = "already exists"
+
+type WaiterOptions struct {
+	// IgnoreAlreadyExistsError controls behavior for "already exists" error:
+	// - If set to true, it indicates that "already exists" error is not a problem, we should
+	//   wait for transaction as usual (this is the behavior of neo-go [waiter.PollingBased]).
+	// - If set to false, it indicates that "already exists" should be reported as an error.
+	IgnoreAlreadyExistsError bool
+
+	// VerifyExecResults controls whether waiter should ensure that transaction successfully
+	// enters blockchain block.
+	VerifyExecResults bool
+}
+
+// Waiter is a decorator on top of the standard [waiter.Waiter].
+// It provides additional behavior (controlled by [WaiterOptions]) on top of the standard
+// functionality of awaiting transactions.
+type Waiter struct {
+	waiter  waiter.Waiter
+	options WaiterOptions
+}
+
+var _ waiter.Waiter = (*Waiter)(nil)
+
+// NewWaiter decorates the specified waiter in a new [Waiter] instance.
+func NewWaiter(waiter waiter.Waiter, options WaiterOptions) *Waiter {
+	return &Waiter{
+		waiter:  waiter,
+		options: options,
+	}
+}
+
+// Wait allows to wait until transaction will be accepted to the chain.
+func (w *Waiter) Wait(h util.Uint256, vub uint32, err error) (*state.AppExecResult, error) {
+	if !w.options.IgnoreAlreadyExistsError && errIsAlreadyExists(err) {
+		return nil, err
+	}
+	result, err := w.waiter.Wait(h, vub, err)
+	return w.examineExecResult(result, err)
+}
+
+// WaitAny waits until at least one of the specified transactions will be accepted
+// to the chain.
+func (w *Waiter) WaitAny(ctx context.Context, vub uint32, hashes ...util.Uint256) (*state.AppExecResult, error) {
+	result, err := w.waiter.WaitAny(ctx, vub, hashes...)
+	return w.examineExecResult(result, err)
+}
+
+func (w *Waiter) examineExecResult(result *state.AppExecResult, err error) (*state.AppExecResult, error) {
+	if !w.options.VerifyExecResults || err != nil {
+		return result, err
+	}
+
+	if result.Execution.VMState != vmstate.Fault {
+		// Transaction didn't fail, so we just return result "as is"
+		return result, nil
+	}
+
+	// Transaction failed, we extract VM exception from it and report as an error
+	if result.FaultException != "" {
+		return result, fmt.Errorf("%s", result.FaultException)
+	}
+	return result, fmt.Errorf("transaction failed, stack=%v", result.Stack)
+}
+
+func errIsAlreadyExists(err error) bool {
+	if err == nil {
+		return false
+	}
+	return strings.Contains(strings.ToLower(err.Error()), alreadyExistsError)
+}

commonclient/waiter_test.go

@@ -0,0 +1,135 @@
+package commonclient
+
+import (
+	"context"
+	"fmt"
+	"testing"
+
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+	"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/vmstate"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+type mockWaiter struct {
+	mock.Mock
+}
+
+func (w *mockWaiter) successfulResult(txHash util.Uint256) *state.AppExecResult {
+	return &state.AppExecResult{
+		Container: txHash,
+		Execution: state.Execution{
+			Trigger:        trigger.Application,
+			VMState:        vmstate.Halt,
+			GasConsumed:    100500,
+			Stack:          nil,
+			Events:         nil,
+			FaultException: "",
+		},
+	}
+}
+
+func (w *mockWaiter) failedResult(txHash util.Uint256, exception string) *state.AppExecResult {
+	return &state.AppExecResult{
+		Container: txHash,
+		Execution: state.Execution{
+			Trigger:        trigger.Application,
+			VMState:        vmstate.Fault,
+			GasConsumed:    100500,
+			Stack:          nil,
+			Events:         nil,
+			FaultException: exception,
+		},
+	}
+}
+
+func (m *mockWaiter) Wait(h util.Uint256, vub uint32, err error) (*state.AppExecResult, error) {
+	args := m.Called(h, vub, err)
+	result := args.Get(0)
+	if result == nil {
+		return nil, args.Error(1)
+	}
+	return result.(*state.AppExecResult), args.Error(1)
+}
+
+func (m *mockWaiter) WaitAny(ctx context.Context, vub uint32, hashes ...util.Uint256) (*state.AppExecResult, error) {
+	args := m.Called(ctx, vub, hashes)
+	result := args.Get(0)
+	if result == nil {
+		return nil, args.Error(1)
+	}
+	return result.(*state.AppExecResult), args.Error(1)
+}
+
+func TestWaiter(t *testing.T) {
+	txHash := util.Uint256{}
+	vub := uint32(100)
+
+	t.Run("ignore already exists error", func(t *testing.T) {
+		sendErr := fmt.Errorf("transaction already exists")
+		mw := &mockWaiter{}
+		mw.On("Wait", txHash, vub, mock.Anything).Return(mw.successfulResult(txHash), nil)
+
+		waiter := NewWaiter(mw, WaiterOptions{IgnoreAlreadyExistsError: true})
+		_, err := waiter.Wait(txHash, vub, sendErr)
+
+		require.NoError(t, err)
+	})
+
+	t.Run("report already exists error", func(t *testing.T) {
+		sendErr := fmt.Errorf("transaction already exists")
+		mw := &mockWaiter{}
+		mw.On("Wait", txHash, vub, mock.Anything).Return(mw.successfulResult(txHash), nil)
+
+		waiter := NewWaiter(mw, WaiterOptions{IgnoreAlreadyExistsError: false})
+		_, err := waiter.Wait(txHash, vub, sendErr)
+
+		require.Error(t, err)
+	})
+
+	t.Run("report wait error when transaction error is ignored", func(t *testing.T) {
+		waitErr := fmt.Errorf("mock error")
+		mw := &mockWaiter{}
+		mw.On("Wait", txHash, vub, nil).Return(nil, waitErr)
+
+		waiter := NewWaiter(mw, WaiterOptions{VerifyExecResults: false})
+		_, err := waiter.Wait(txHash, vub, nil)
+
+		require.ErrorIs(t, err, waitErr)
+	})
+
+	t.Run("report wait error when transaction error is verified", func(t *testing.T) {
+		waitErr := fmt.Errorf("mock error")
+		mw := &mockWaiter{}
+		mw.On("Wait", txHash, vub, nil).Return(nil, waitErr)
+
+		waiter := NewWaiter(mw, WaiterOptions{VerifyExecResults: true})
+		_, err := waiter.Wait(txHash, vub, nil)
+
+		require.ErrorIs(t, err, waitErr)
+	})
+
+	t.Run("ignore error from transaction", func(t *testing.T) {
+		txError := "mock error"
+		mw := &mockWaiter{}
+		mw.On("Wait", txHash, vub, nil).Return(mw.failedResult(txHash, txError), nil)
+
+		waiter := NewWaiter(mw, WaiterOptions{VerifyExecResults: false})
+		_, err := waiter.Wait(txHash, vub, nil)
+
+		require.NoError(t, err)
+	})
+
+	t.Run("examine error from transaction", func(t *testing.T) {
+		txError := "mock error"
+		mw := &mockWaiter{}
+		mw.On("Wait", txHash, vub, nil).Return(mw.failedResult(txHash, txError), nil)
+
+		waiter := NewWaiter(mw, WaiterOptions{VerifyExecResults: true})
+		_, err := waiter.Wait(txHash, vub, nil)
+
+		require.ErrorContains(t, err, txError)
+	})
+}

docs/globally-unique-domain-zone.md

@@ -0,0 +1,160 @@
+# Globally unique domain zone
+
+**Make sure you understand the [basic concepts](../nns/README.md) of `NNS`.**
+
+`Globally Unique Domains Zone` (`GUDZ`) is an extension of `NNS` that ensures unique names across multiple domain zones. When this option is enabled, all newly created domains will automatically receive a corresponding alias in the designated global zone. Deleting a domain will also remove its alias from the global zone.
+
+It's important to note that this feature is not retroactive: domains created before this option is enabled will not receive a global alias. Likewise, if the option is later disabled, domains that already have a `GUDZ` alias will retain their records. To fully disable `GUDZ`, all domains must be recreated with the option turned off.
+
+To enable `GUDZ`, add a `cnametgt=$(global domain)` `TXT` record that specifies the global zone.
+
+**Example:**
+
+Domains:
+- `poland`
+- `sweden`
+- `animals.org`
+
+It is necessary to associate the domain zones `.poland` and `.sweden` into the global zone `.animals`.
+
+![](img/GUDZ.png)
+
+Create domains:
+
+```
+frostfs-adm morph nns register --name="poland" --email="email@email.email"
+frostfs-adm morph nns register --name="sweden" --email="email@email.email"
+frostfs-adm morph nns register --name="org" --email="email@email.email"
+frostfs-adm morph nns register --name="animals.org" --email="email@email.email"
+```
+
+Add the `cnametgt` records:
+
+```
+frostfs-adm morph nns  add-record --name="poland" --data="cnametgt=animals.org" --type="txt" 
+frostfs-adm morph nns  add-record --name="sweden" --data="cnametgt=animals.org" --type="txt" 
+```
+
+Create a domain with mapping to the global zone:
+
+```
+frostfs-adm morph nns register --name="bober.poland" --email="email@email.email"
+```
+
+Add any `TXT` record
+
+```
+frostfs-adm morph nns  add-record --name="bober.poland" --data="CID" --type="txt"
+```
+
+Verify that the created domain has alias in the global zone
+
+```
+frostfs-adm morph nns tokens -v
+
+balance.frostfs
+animals.org
+group.frostfs
+container
+org
+container.frostfs
+proxy.frostfs
+policy.frostfs
+alphabet0.frostfs
+sweden
+frostfsid.frostfs
+bober.animals.org (CNAME: bober.poland)
+netmap.frostfs
+frostfs
+poland
+bober.poland
+```
+
+Create of a conflicting domain
+```
+frostfs-adm morph nns register --name="bober.sweden" --email="email@email.email"
+
+unable to register domain: script failed (FAULT state) due to an error: at instruction 1263 (THROW): unhandled exception: "global domain is already taken: bober.animals.org. Domain: bober.poland
+```
+
+**Disable GUDZ**
+Delete `cnametgt` records
+
+```
+frostfs-adm morph nns delete-records --type=txt --name=poland
+```
+Create `hamster.poland` and `hamster.sweden`
+```
+frostfs-adm morph nns register --name="hamster.poland" --email="email@email.email"
+frostfs-adm morph nns register --name="hamster.sweden" --email="email@email.email"
+```
+`hamster.poland` and `hamster.sweden` does not have alias
+```
+frostfs-adm morph nns tokens -v
+balance.frostfs
+animals.org
+group.frostfs
+container
+org
+container.frostfs
+proxy.frostfs
+policy.frostfs
+alphabet0.frostfs
+sweden
+frostfsid.frostfs
+bober.animals.org (CNAME: bober.poland)
+netmap.frostfs
+frostfs
+poland
+bober.poland
+hamster.poland
+```
+Delete global alias of `bober.poland`
+
+```
+ frostfs-adm morph nns delete-records --name="bober.poland" --type="txt"
+```
+
+
+```
+frostfs-adm morph nns tokens -v
+balance.frostfs
+animals.org
+group.frostfs
+container
+org
+container.frostfs
+proxy.frostfs
+policy.frostfs
+alphabet0.frostfs
+sweden
+frostfsid.frostfs
+netmap.frostfs
+frostfs
+poland
+bober.poland
+hamster.poland
+```
+Delete `bober.poland`
+```
+ frostfs-adm morph nns delete --name="bober.poland"
+```
+
+```
+frostfs-adm morph nns tokens -v
+balance.frostfs
+animals.org
+group.frostfs
+container
+org
+container.frostfs
+proxy.frostfs
+policy.frostfs
+alphabet0.frostfs
+sweden
+frostfsid.frostfs
+netmap.frostfs
+frostfs
+poland
+hamster.poland
+```

docs/img/GUDZ.drawio

@@ -0,0 +1,139 @@
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+        <mxCell id="l_qLPBR5nCWAv8Wbn5Wl-18" value="&lt;span style=&quot;white-space: pre-wrap;&quot; data-src-align=&quot;0:10&quot; class=&quot;EzKURWReUAB5oZgtQNkl&quot;&gt;[ global&lt;/span&gt;&lt;span style=&quot;white-space: pre-wrap;&quot;&gt; &lt;/span&gt;&lt;span style=&quot;white-space: pre-wrap;&quot; data-src-align=&quot;11:8&quot; class=&quot;EzKURWReUAB5oZgtQNkl&quot;&gt;domain&lt;/span&gt;&lt;span style=&quot;white-space: pre-wrap;&quot;&gt; &lt;/span&gt;&lt;span style=&quot;white-space: pre-wrap;&quot; data-src-align=&quot;20:4&quot; class=&quot;EzKURWReUAB5oZgtQNkl&quot;&gt;zone ]&lt;/span&gt;" style="text;html=1;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;" vertex="1" parent="1">
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+          <mxGeometry x="465" y="430" width="70" height="30" as="geometry" />
+        </mxCell>
+        <mxCell id="Z9nLDmrU-mAa8Hye4rHX-1" value=".ns" style="rounded=0;whiteSpace=wrap;html=1;" vertex="1" parent="1">
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+        </mxCell>
+        <mxCell id="Z9nLDmrU-mAa8Hye4rHX-3" value=".sweden" style="rounded=0;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="250" y="-120" width="120" height="60" as="geometry" />
+        </mxCell>
+        <mxCell id="Z9nLDmrU-mAa8Hye4rHX-4" value=".poland" style="rounded=0;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="10" y="-120" width="120" height="60" as="geometry" />
+        </mxCell>
+        <mxCell id="Z9nLDmrU-mAa8Hye4rHX-5" value="" style="endArrow=classic;html=1;rounded=0;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="Z9nLDmrU-mAa8Hye4rHX-1" target="Z9nLDmrU-mAa8Hye4rHX-4">
+          <mxGeometry width="50" height="50" relative="1" as="geometry">
+            <mxPoint x="260" y="80" as="sourcePoint" />
+            <mxPoint x="310" y="30" as="targetPoint" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="Z9nLDmrU-mAa8Hye4rHX-6" value="" style="endArrow=classic;html=1;rounded=0;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="Z9nLDmrU-mAa8Hye4rHX-1" target="Z9nLDmrU-mAa8Hye4rHX-3">
+          <mxGeometry width="50" height="50" relative="1" as="geometry">
+            <mxPoint x="200" y="-170" as="sourcePoint" />
+            <mxPoint x="80" y="-110" as="targetPoint" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="Z9nLDmrU-mAa8Hye4rHX-7" value="bober" style="rounded=0;whiteSpace=wrap;html=1;" vertex="1" parent="1">
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+        </mxCell>
+        <mxCell id="Z9nLDmrU-mAa8Hye4rHX-8" value="" style="endArrow=classic;html=1;rounded=0;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="Z9nLDmrU-mAa8Hye4rHX-4" target="Z9nLDmrU-mAa8Hye4rHX-7">
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+            <mxPoint x="190" y="50" as="sourcePoint" />
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+          </mxGeometry>
+        </mxCell>
+        <mxCell id="Z9nLDmrU-mAa8Hye4rHX-9" value=".&lt;span lang=&quot;en&quot; class=&quot;Y2IQFc&quot;&gt;animals&lt;/span&gt;" style="rounded=0;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="440" y="-120" width="120" height="60" as="geometry" />
+        </mxCell>
+        <mxCell id="Z9nLDmrU-mAa8Hye4rHX-10" value="" style="endArrow=classic;html=1;rounded=0;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1">
+          <mxGeometry width="50" height="50" relative="1" as="geometry">
+            <mxPoint x="499.76" y="-180" as="sourcePoint" />
+            <mxPoint x="499.76" y="-120" as="targetPoint" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="Z9nLDmrU-mAa8Hye4rHX-11" value="" style="endArrow=classic;html=1;rounded=0;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1">
+          <mxGeometry width="50" height="50" relative="1" as="geometry">
+            <mxPoint x="309.71000000000004" y="-60" as="sourcePoint" />
+            <mxPoint x="309.71000000000004" as="targetPoint" />
+          </mxGeometry>
+        </mxCell>
+        <mxCell id="Z9nLDmrU-mAa8Hye4rHX-12" value="bober" style="rounded=0;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="250" width="120" height="60" as="geometry" />
+        </mxCell>
+        <mxCell id="Z9nLDmrU-mAa8Hye4rHX-13" value="&lt;span style=&quot;white-space: pre-wrap;&quot; data-src-align=&quot;0:10&quot; class=&quot;EzKURWReUAB5oZgtQNkl&quot;&gt;[ without global&lt;/span&gt;&lt;span style=&quot;white-space: pre-wrap;&quot;&gt; &lt;/span&gt;&lt;span style=&quot;white-space: pre-wrap;&quot; data-src-align=&quot;11:8&quot; class=&quot;EzKURWReUAB5oZgtQNkl&quot;&gt;domain&lt;/span&gt;&lt;span style=&quot;white-space: pre-wrap;&quot;&gt; &lt;/span&gt;&lt;span style=&quot;white-space: pre-wrap;&quot; data-src-align=&quot;20:4&quot; class=&quot;EzKURWReUAB5oZgtQNkl&quot;&gt;zone ]&lt;/span&gt;" style="text;html=1;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;" vertex="1" parent="1">
+          <mxGeometry x="390" y="-300" width="180" height="30" as="geometry" />
+        </mxCell>
+      </root>
+    </mxGraphModel>
+  </diagram>
+</mxfile>

frostfsid/client/client.go

@@ -23,11 +23,13 @@ import (
 type (
 	Client struct {
 		act      *actor.Actor
+		waiter   waiter.Waiter
 		contract util.Uint160
 	}
 
 	Options struct {
 		ProxyContract util.Uint160
+		Waiter        commonclient.WaiterOptions
 	}
 )
 
@@ -94,6 +96,7 @@ const (
 	createSubjectMethod       = "createSubject"
 	getSubjectMethod          = "getSubject"
 	getSubjectExtendedMethod  = "getSubjectExtended"
+	getSubjectKVMethod        = "getSubjectKV"
 	listSubjectsMethod        = "listSubjects"
 	addSubjectKeyMethod       = "addSubjectKey"
 	removeSubjectKeyMethod    = "removeSubjectKey"
@@ -151,17 +154,21 @@ func New(ra actor.RPCActor, acc *wallet.Account, contract util.Uint160, opt Opti
 	if err != nil {
 		return nil, fmt.Errorf("init actor: %w", err)
 	}
+	wtr := commonclient.NewWaiter(act, opt.Waiter)
 
 	return &Client{
 		act:      act,
+		waiter:   wtr,
 		contract: contract,
 	}, nil
 }
 
-// NewSimple creates a new Client using exising actor.Actor.
+// NewSimple creates a new Client using existing actor.Actor and default waiter options.
 func NewSimple(act *actor.Actor, contract util.Uint160) *Client {
+	wtr := commonclient.NewWaiter(act, commonclient.WaiterOptions{})
 	return &Client{
 		act:      act,
+		waiter:   wtr,
 		contract: contract,
 	}
 }
@@ -260,6 +267,11 @@ func (c Client) GetSubjectExtended(addr util.Uint160) (*SubjectExtended, error)
 	return ParseSubjectExtended(items)
 }
 
+// GetSubjectKV invokes `getSubjectKV` method of contract.
+func (c Client) GetSubjectKV(addr util.Uint160, name string) (string, error) {
+	return unwrap.UTF8String(c.act.Call(c.contract, getSubjectKVMethod, addr, name))
+}
+
 // ListSubjects gets all subjects.
 func (c Client) ListSubjects() ([]util.Uint160, error) {
 	return UnwrapArrayOfUint160(commonclient.ReadIteratorItems(c.act, iteratorBatchSize, c.contract, listSubjectsMethod))
@@ -601,18 +613,14 @@ func (c Client) ListNonEmptyNamespaces() ([]string, error) {
 	return res, nil
 }
 
-// Wait invokes underlying wait method on actor.Actor.
-// Notice that "already	exists" err value is treated as an error by this routine unlike actor.Waiter.
+// Wait waits until the specified transaction is accepted to the chain.
 func (c Client) Wait(tx util.Uint256, vub uint32, err error) (*state.AppExecResult, error) {
-	if err != nil {
-		return nil, err
-	}
-	return c.act.Wait(tx, vub, err)
+	return c.Waiter().Wait(tx, vub, err)
 }
 
 // Waiter returns underlying waiter.Waiter.
 func (c Client) Waiter() waiter.Waiter {
-	return c.act
+	return c.waiter
 }
 
 // ParseGroupID fetch groupID from stack after creating group method invocation.

frostfsid/config.yml

@@ -7,6 +7,7 @@ safemethods:
   - "getGroupByName"
   - "getNamespace"
   - "getNamespaceExtended"
+  - "getSubjectKV"
   - "getSubject"
   - "getSubjectExtended"
   - "getSubjectByKey"

frostfsid/doc.go

@@ -20,6 +20,7 @@ FrostFSID contract does not produce notifications to process.
  | `G` + [ RIPEMD160 of namespace ] + [ 8 byte group id ] + [ subject address ] | []byte{1}                      | subject that belongs to the group             |
  | `c`                                                                          | Int                            | group id counter                              |
  | `m` + [ RIPEMD160 of namespace ] + [ RIPEMD160 of subject name ]             | Serialized group id int        | group name to group id index                  |
+ | `A` + [ subject address ]                                                    | bool                           | means that the wallet has been used           |
 
 
 */

frostfsid/frostfsid_contract.go

@@ -96,6 +96,7 @@ const (
 	groupSubjectsKeysPrefix      = 'G'
 	groupCounterKey              = 'c'
 	namespaceGroupsNamesPrefix   = 'm'
+	addressPrefix                = 'A'
 )
 
 func _deploy(data any, isUpdate bool) {
@@ -112,6 +113,27 @@ func _deploy(data any, isUpdate bool) {
 		storage.Put(ctx, adminKey, args.admin)
 	}
 
+	if isUpdate {
+		it := storage.Find(ctx, subjectKeysPrefix, storage.ValuesOnly)
+		for iterator.Next(it) {
+			subjectRaw := iterator.Value(it)
+			subject := std.Deserialize(subjectRaw.([]byte)).(Subject)
+			address := addressKey(contract.CreateStandardAccount(subject.PrimaryKey))
+			if storage.Get(ctx, address) != nil {
+				panic("frostfsid contract contains duplicate keys")
+			}
+			storage.Put(ctx, address, true)
+
+			for i := 0; i < len(subject.AdditionalKeys); i++ {
+				address = addressKey(contract.CreateStandardAccount(subject.AdditionalKeys[i]))
+				if storage.Get(ctx, address) != nil {
+					panic("frostfsid contract contains duplicate keys")
+				}
+				storage.Put(ctx, address, true)
+			}
+		}
+	}
+
 	storage.Put(ctx, groupCounterKey, 0)
 	storage.Put(ctx, namespaceKey(""), std.Serialize(Namespace{}))
 
@@ -182,6 +204,11 @@ func CreateSubject(ns string, key interop.PublicKey) {
 		panic("key is occupied")
 	}
 
+	allAddressKey := addressKey(addr)
+	if storage.Get(ctx, allAddressKey) != nil {
+		panic("key is occupied by another additional key")
+	}
+
 	nsKey := namespaceKey(ns)
 	data = storage.Get(ctx, nsKey).([]byte)
 	if data == nil {
@@ -197,6 +224,7 @@ func CreateSubject(ns string, key interop.PublicKey) {
 
 	nsSubjKey := namespaceSubjectKey(ns, addr)
 	storage.Put(ctx, nsSubjKey, []byte{1})
+	storage.Put(ctx, allAddressKey, true)
 
 	runtime.Notify("CreateSubject", interop.Hash160(addr))
 }
@@ -213,6 +241,11 @@ func AddSubjectKey(addr interop.Hash160, key interop.PublicKey) {
 		panic("incorrect public key length")
 	}
 
+	addressKey := addressKey(contract.CreateStandardAccount(key))
+	if storage.Get(ctx, addressKey) != nil {
+		panic("key is occupied")
+	}
+
 	saKey := subjectAdditionalKey(key, addr)
 	data := storage.Get(ctx, saKey).([]byte)
 	if data != nil {
@@ -230,6 +263,7 @@ func AddSubjectKey(addr interop.Hash160, key interop.PublicKey) {
 	subject.AdditionalKeys = append(subject.AdditionalKeys, key)
 
 	storage.Put(ctx, sKey, std.Serialize(subject))
+	storage.Put(ctx, addressKey, true)
 	runtime.Notify("AddSubjectKey", addr, key)
 }
 
@@ -269,6 +303,7 @@ func RemoveSubjectKey(addr interop.Hash160, key interop.PublicKey) {
 	subject.AdditionalKeys = additionalKeys
 
 	storage.Put(ctx, sKey, std.Serialize(subject))
+	storage.Delete(ctx, addressKey(contract.CreateStandardAccount(key)))
 	runtime.Notify("RemoveSubjectKey", addr, key)
 }
 
@@ -362,6 +397,7 @@ func DeleteSubject(addr interop.Hash160) {
 
 	for i := 0; i < len(subj.AdditionalKeys); i++ {
 		storage.Delete(ctx, subjectAdditionalKey(subj.AdditionalKeys[i], addr))
+		storage.Delete(ctx, addressKey(contract.CreateStandardAccount(subj.AdditionalKeys[i])))
 	}
 	storage.Delete(ctx, sKey)
 
@@ -381,7 +417,12 @@ func GetSubject(addr interop.Hash160) Subject {
 	sKey := subjectKeyFromAddr(addr)
 	data := storage.Get(ctx, sKey).([]byte)
 	if data == nil {
-		panic("subject not found")
+		a := getPrimaryAddr(ctx, addr)
+		sKey = subjectKeyFromAddr(a)
+		data = storage.Get(ctx, sKey).([]byte)
+		if data == nil {
+			panic("subject not found")
+		}
 	}
 
 	return std.Deserialize(data).(Subject)
@@ -433,21 +474,25 @@ func GetSubjectByKey(key interop.PublicKey) Subject {
 		return std.Deserialize(data).(Subject)
 	}
 
-	saPrefix := subjectAdditionalPrefix(key)
-	it := storage.Find(ctx, saPrefix, storage.KeysOnly|storage.RemovePrefix)
-	for iterator.Next(it) {
-		addr := iterator.Value(it).([]byte)
-		sKey = subjectKeyFromAddr(addr)
-		data = storage.Get(ctx, sKey).([]byte)
-		if data != nil {
-			return std.Deserialize(data).(Subject)
-		}
-		break
+	addr := getPrimaryAddr(ctx, contract.CreateStandardAccount(key))
+	sKey = subjectKeyFromAddr(addr)
+	data = storage.Get(ctx, sKey).([]byte)
+	if data != nil {
+		return std.Deserialize(data).(Subject)
 	}
 
 	panic("subject not found")
 }
 
+func getPrimaryAddr(ctx storage.Context, addr interop.Hash160) interop.Hash160 {
+	saPrefix := append([]byte{additionalKeysPrefix}, addr...)
+	it := storage.Find(ctx, saPrefix, storage.KeysOnly|storage.RemovePrefix)
+	if iterator.Next(it) {
+		return iterator.Value(it).([]byte)
+	}
+	panic("subject not found")
+}
+
 // GetSubjectByName retrieves the subject with the specified name within the given namespace.
 func GetSubjectByName(ns, name string) Subject {
 	key := GetSubjectKeyByName(ns, name)
@@ -472,6 +517,34 @@ func GetSubjectKeyByName(ns, name string) interop.PublicKey {
 	return subjKey
 }
 
+// GetSubjectKV GetSubjectKey returns the value associated with the key for the subject.
+func GetSubjectKV(addr interop.Hash160, name string) string {
+	if len(addr) != interop.Hash160Len {
+		panic("incorrect address length")
+	}
+
+	ctx := storage.GetReadOnlyContext()
+	sKey := subjectKeyFromAddr(addr)
+	data := storage.Get(ctx, sKey).([]byte)
+	if data == nil {
+		return ""
+	}
+
+	sbj := std.Deserialize(data).(Subject)
+
+	if sbj.KV == nil {
+		return ""
+	}
+
+	for k, v := range sbj.KV {
+		if k == name {
+			return v
+		}
+	}
+
+	return ""
+}
+
 func ListSubjects() iterator.Iterator {
 	ctx := storage.GetReadOnlyContext()
 	return storage.Find(ctx, []byte{subjectKeysPrefix}, storage.KeysOnly|storage.RemovePrefix)
@@ -1001,3 +1074,7 @@ func idToBytes(itemID int) []byte {
 	zeros := make([]byte, 8-ln)
 	return append(b, zeros...)
 }
+
+func addressKey(address []byte) []byte {
+	return append([]byte{addressPrefix}, address...)
+}

go.mod

@@ -1,6 +1,6 @@
 module git.frostfs.info/TrueCloudLab/frostfs-contract
 
-go 1.20
+go 1.22
 
 require (
 	github.com/google/uuid v1.6.0
@@ -36,6 +36,7 @@ require (
 	github.com/prometheus/procfs v0.12.0 // indirect
 	github.com/rogpeppe/go-internal v1.11.0 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
+	github.com/stretchr/objx v0.5.2 // indirect
 	github.com/syndtr/goleveldb v1.0.1-0.20210305035536-64b5b1c73954 // indirect
 	github.com/twmb/murmur3 v1.1.8 // indirect
 	github.com/urfave/cli/v2 v2.27.2 // indirect

go.sum

@@ -1,4 +1,5 @@
 github.com/antlr/antlr4/runtime/Go/antlr/v4 v4.0.0-20221202181307-76fa05c21b12 h1:npHgfD4Tl2WJS3AJaMUi5ynGDPUBfkg3U3fCzDyXZ+4=
+github.com/antlr/antlr4/runtime/Go/antlr/v4 v4.0.0-20221202181307-76fa05c21b12/go.mod h1:pSwJ0fSY5KhvocuWSx4fz3BA8OrA1bQn+K1Eli3BRwM=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bits-and-blooms/bitset v1.8.0 h1:FD+XqgOZDUxxZ8hzoBFuV9+cGWY9CslN6d5MS5JVb4c=
@@ -6,6 +7,7 @@ github.com/bits-and-blooms/bitset v1.8.0/go.mod h1:7hO7Gc7Pp1vODcmWvKMRA9BNmbv6a
 github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
 github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/chzyer/readline v1.5.1 h1:upd/6fQk4src78LMRzh5vItIt361/o4uq553V8B5sGI=
+github.com/chzyer/readline v1.5.1/go.mod h1:Eh+b79XXUwfKfcPLepksvw2tcLE/Ct21YObkaSkeBlk=
 github.com/consensys/bavard v0.1.13 h1:oLhMLOFGTLdlda/kma4VOJazblc7IM5y5QPd2A/YjhQ=
 github.com/consensys/bavard v0.1.13/go.mod h1:9ItSMtA/dXMAiL7BG6bqW2m3NdSEObYWoH223nGHukI=
 github.com/consensys/gnark-crypto v0.12.2-0.20231013160410-1f65e75b6dfb h1:f0BMgIjhZy4lSRHCXFbQst85f5agZAjtDMixQqBWNpc=
@@ -17,6 +19,7 @@ github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0 h1:8UrgZ3GkP4i/CLijOJx79Yu+etlyjdBU4sfcs2WYQMs=
 github.com/decred/dcrd/dcrec/secp256k1/v4 v4.2.0/go.mod h1:v57UDF4pDQJcEfFUCRop3lJL149eHGSe9Jvczhzjo/0=
 github.com/frankban/quicktest v1.14.5 h1:dfYrrRyLtiqT9GyKXgdh+k4inNeTvmGbuSgZ3lx3GhA=
+github.com/frankban/quicktest v1.14.5/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
@@ -28,12 +31,14 @@ github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:W
 github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
 github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
+github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
 github.com/golang/snappy v0.0.1 h1:Qgr9rKW7uDUkrbSmQeiDsGa8SjGyCOGtuasMWwvp2P4=
 github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/subcommands v1.2.0/go.mod h1:ZjhPrFU+Olkh9WazFPsl27BQ4UPiG37m3yTrtFlrHVk=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
@@ -45,9 +50,13 @@ github.com/holiman/uint256 v1.2.4 h1:jUc4Nk8fm9jZabQuqr2JzednajVmBpC+oiTiXZJEApU
 github.com/holiman/uint256 v1.2.4/go.mod h1:EOMSn4q6Nyt9P6efbI3bueV4e1b3dGlUCXeiRV4ng7E=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 h1:Z9n2FFNUXsshfwJMBgNA0RU6/i7WVaAegv3PtuIHPMs=
+github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51/go.mod h1:CzGEWj7cYgsdH8dAjBGEr58BoE7ScuLd+fwFZ44+/x8=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
+github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/leanovate/gopter v0.2.9 h1:fQjYxZaynp97ozCzfOyOuAGOU4aU/z37zf/tOujFk7c=
+github.com/leanovate/gopter v0.2.9/go.mod h1:U2L/78B+KVFIx2VmW6onHJQzXtFb+p5y3y2Sh+Jxxv8=
 github.com/mmcloughlin/addchain v0.4.0 h1:SobOdjm2xLj1KkXN5/n0xTIWyZA2+s99UCY1iPfkHRY=
 github.com/mmcloughlin/addchain v0.4.0/go.mod h1:A86O+tHqZLMNO4w6ZZ4FlVQEadcoqkyU72HC5wJ4RlU=
 github.com/mmcloughlin/profile v0.1.1/go.mod h1:IhHD7q1ooxgwTgjxQYkACGA77oFTDdFVejUS1/tS/qU=
@@ -58,15 +67,19 @@ github.com/nspcc-dev/dbft v0.2.0/go.mod h1:oFE6paSC/yfFh9mcNU6MheMGOYXK9+sPiRk3Y
 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/v2 v2.0.1 h1:CxYUkBeJvNfMEn2lHhrV6FjY8pZPceSxXUtMVq0BUOU=
+github.com/nspcc-dev/hrw/v2 v2.0.1/go.mod h1:iZAs5hT2q47EGq6AZ0FjaUI6ggntOi7vrY4utfzk5VA=
 github.com/nspcc-dev/neo-go v0.106.3 h1:HEyhgkjQY+HfBzotMJ12xx2VuOUphkngZ4kEkjvXDtE=
 github.com/nspcc-dev/neo-go v0.106.3/go.mod h1:3vEwJ2ld12N7HRGCaH/l/7EwopplC/+8XdIdPDNmD/M=
 github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20240727093519-1a48f1ce43ec h1:vDrbVXF2+2uP0RlkZmem3QYATcXCu9BzzGGCNsNcK7Q=
 github.com/nspcc-dev/neo-go/pkg/interop v0.0.0-20240727093519-1a48f1ce43ec/go.mod h1:/vrbWSHc7YS1KSYhVOyyeucXW/e+1DkVBOgnBEXUCeY=
 github.com/nspcc-dev/neofs-api-go/v2 v2.14.1-0.20240305074711-35bc78d84dc4 h1:arN0Ypn+jawZpu1BND7TGRn44InAVIqKygndsx0y2no=
+github.com/nspcc-dev/neofs-api-go/v2 v2.14.1-0.20240305074711-35bc78d84dc4/go.mod h1:7Tm1NKEoUVVIUlkVwFrPh7GG5+Lmta2m7EGr4oVpBd8=
 github.com/nspcc-dev/neofs-sdk-go v1.0.0-rc.12 h1:mdxtlSU2I4oVZ/7AXTLKyz8uUPbDWikZw4DM8gvrddA=
+github.com/nspcc-dev/neofs-sdk-go v1.0.0-rc.12/go.mod h1:JdsEM1qgNukrWqgOBDChcYp8oY4XUzidcKaxY4hNJvQ=
 github.com/nspcc-dev/rfc6979 v0.2.1 h1:8wWxkamHWFmO790GsewSoKUSJjVnL1fmdRpokU/RgRM=
 github.com/nspcc-dev/rfc6979 v0.2.1/go.mod h1:Tk7h5kyUWkhjyO3zUgFFhy1v2vQv3BvQEntakdtqrWc=
 github.com/nspcc-dev/tzhash v1.7.2 h1:iRXoa9TJqH/DQO7FFcqpq9BdruF9E7/xnFGlIghl5J4=
+github.com/nspcc-dev/tzhash v1.7.2/go.mod h1:oHiH0qwmTsZkeVs7pvCS5cVXUaLhXxSFvnmnZ++ijm4=
 github.com/nxadm/tail v1.4.4 h1:DQuhQpB1tVlglWS2hLQ5OV6B5r8aGxSrPc5Qo6uTN78=
 github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
@@ -92,6 +105,8 @@ github.com/rogpeppe/go-internal v1.11.0 h1:cWPaGQEPrBb5/AsnsZesgZZ9yb1OQ+GOISoDN
 github.com/rogpeppe/go-internal v1.11.0/go.mod h1:ddIwULY96R17DhadqLgMfk9H9tvdUzkipdSkR5nkCZA=
 github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/stretchr/objx v0.5.2 h1:xuMeJ0Sdp5ZMRXx/aWO6RZxdr3beISkG5/G/aIRr3pY=
+github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/syndtr/goleveldb v1.0.1-0.20210305035536-64b5b1c73954 h1:xQdMZ1WLrgkkvOZ/LDQxjVxMLdby7osSh4ZEVa5sIjs=
@@ -105,6 +120,7 @@ github.com/xrash/smetrics v0.0.0-20240312152122-5f08fbb34913/go.mod h1:4aEEwZQut
 go.etcd.io/bbolt v1.3.9 h1:8x7aARPEXiXbHmtUwAIv7eV2fQFHrLLavdiJ3uzJXoI=
 go.etcd.io/bbolt v1.3.9/go.mod h1:zaO32+Ti0PK1ivdPtgMESzuzL2VPoIG1PCQNvOdo/dE=
 go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
+go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
 go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
 go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
 go.uber.org/zap v1.27.0 h1:aJMhYGrd5QSmlpLMr2MftRKl7t8J8PTZPA732ud/XR8=
@@ -114,6 +130,7 @@ golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.21.0 h1:X31++rzVUdKhX5sWmSOFZxx8UW/ldWx55cbf08iNAMA=
 golang.org/x/crypto v0.21.0/go.mod h1:0BP7YvVV9gBbVKyeTG0Gyn+gZm94bibOW5BjDEYAOMs=
 golang.org/x/exp v0.0.0-20240222234643-814bf88cf225 h1:LfspQV/FYTatPTr/3HzIcmiUFH7PGP+OQ6mgDYo3yuQ=
+golang.org/x/exp v0.0.0-20240222234643-814bf88cf225/go.mod h1:CxmFvTBINI24O/j8iY7H1xHzx2i4OsyguNBmN/uPtqc=
 golang.org/x/mod v0.16.0 h1:QX4fJ0Rr5cPQCF7O9lh9Se4pmwfwskqZfq5moyldzic=
 golang.org/x/mod v0.16.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -124,6 +141,7 @@ golang.org/x/net v0.23.0 h1:7EYJ93RZ9vYSZAIb2x3lnuvqO5zneoD6IvWjuhfxjTs=
 golang.org/x/net v0.23.0/go.mod h1:JKghWKKOSdJwpW2GEx0Ja7fmaKnMsbu+MWVZTokSYmg=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
+golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -149,7 +167,9 @@ golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/genproto/googleapis/rpc v0.0.0-20240221002015-b0ce06bbee7c h1:NUsgEN92SQQqzfA+YtqYNqYmB3DMMYLlIwUZAQFVFbo=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240221002015-b0ce06bbee7c/go.mod h1:H4O17MA/PE9BsGx3w+a+W2VOLLD1Qf7oJneAoU6WktY=
 google.golang.org/grpc v1.62.0 h1:HQKZ/fa1bXkX1oFOvSjmZEUL8wLSaZTjCcLAlmZRtdk=
+google.golang.org/grpc v1.62.0/go.mod h1:IWTG0VlJLCh1SkC58F7np9ka9mx/WNkjl4PGJaiq+QE=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -160,12 +180,14 @@ google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGm
 google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 rsc.io/tmplfunc v0.0.3 h1:53XFQh69AfOa8Tw0Jm7t+GV7KZhOi6jzsCzTtKbMvzU=

nns/README.md

@@ -0,0 +1,75 @@
+# NNS 
+NNS - Neo Name Service is a service that allows manage a domain name as a digital asset (NFT). It has an interface similar to `DNS` but has significant differences in its internal structure.
+
+## Entities:
+
+- Domain
+- Record
+- Owner
+- Committee
+
+### Domain
+
+Domain is string that satisfies the following requirements:
+- Length from 2 to 255 characters.
+- Root domain must start with a letter.
+- All other fragments must start and end with a letter or digit.
+
+Domain has owner, a registration period, and may optionally have records.
+
+A fee established by the committee is charged upon domain registration. After registration, the owner can manage this asset (add/delete records, transfer ownership to another owner) until the end of the domain registration period.
+
+### Record
+
+A record is a pair of values `<type, string>`.
+
+Supported record types:
+
+| Type  | Description                               |
+|-------|-------------------------------------------|
+| A     | Represents address record type            |
+| AAA   | Represents IPv6 address record type       |
+| TXT   | Represents text record type               |
+| CNAME | Represents canonical name record type     |
+| SOA   | Represents start of authority record type |
+
+### Owner
+
+An owner is a wallet that has the right to manage this NFT (domain).
+
+### Committee
+
+The committee makes new tokens (domains), sets, and charges a fee for issuance.
+
+## Globally Unique Domain Zone
+
+For more information, see [here](../docs/globally-unique-domain-zone.md).
+
+## NNS and Frostfsid
+
+You can register a TLD domain without a committee signature using Frostfsid. To do this, create a new wallet
+```
+neo-go wallet init -w newwallet/wallet.json
+```
+
+Get wallet address:
+```
+neo-go wallet dump-keys -w newwallet/wallet.json
+[subject-address]
+[subject-key]
+```
+
+Create a subject in `FrostfsID`:
+```
+frostfs-adm morph frostfsid create-subject --subject-key="[subject-key]"
+```
+
+Grant permissions to the wallet:
+```
+frostfs-adm morph nns give-privilege --subject-address="[subject-address]"
+```
+
+Register domain:
+```
+neo-go contract invokefunction [NNS-hash] register   "subdomain.domain"  hash160:[subject-address]   "email@frostfs.info"   10000   1000   1000   1000 -- [subject-address]:Global
+```

nns/config.yml

@@ -2,6 +2,7 @@ name: "NameService"
 supportedstandards: ["NEP-11"]
 safemethods: ["balanceOf", "decimals", "symbol", "totalSupply", "tokensOf", "ownerOf",
               "tokens", "properties", "roots", "getPrice", "isAvailable", "getRecords",
+              "getAllRecords",
               "resolve", "version"]
 events:
   - name: RegisterDomain
@@ -14,6 +15,12 @@ events:
         type: String
       - name: type
         type: Integer
+  - name: DeleteRecord
+    parameters:
+      - name: name
+        type: String
+      - name: type
+        type: Integer
   - name: DeleteRecords
     parameters:
       - name: name

nns/frostfsid.go

@@ -0,0 +1,39 @@
+package nns
+
+import (
+	"github.com/nspcc-dev/neo-go/pkg/interop"
+	"github.com/nspcc-dev/neo-go/pkg/interop/contract"
+	"github.com/nspcc-dev/neo-go/pkg/interop/native/management"
+	"github.com/nspcc-dev/neo-go/pkg/interop/native/std"
+	"github.com/nspcc-dev/neo-go/pkg/interop/storage"
+)
+
+const FrostfsIDNNSName = "frostfsid.frostfs"
+
+const (
+	FrostfsIDNNSTLDPermissionKey    = "nns-allow-register-tld"
+	FrostfsIDTLDRegistrationAllowed = "allow"
+)
+
+func checkFrostfsID(ctx storage.Context, addr interop.Hash160) bool {
+	if len(addr) == 0 {
+		return false
+	}
+
+	frostfsIDAddress := getRecordsByType(ctx, []byte(tokenIDFromName(FrostfsIDNNSName)), FrostfsIDNNSName, TXT)
+	if len(frostfsIDAddress) < 2 {
+		return false
+	}
+
+	decodedBytes := std.Base58Decode([]byte(frostfsIDAddress[1]))
+
+	if len(decodedBytes) < 21 || management.GetContract(decodedBytes[1:21]) == nil {
+		return false
+	}
+
+	if res := contract.Call(decodedBytes[1:21], "getSubjectKV", contract.ReadOnly, addr, FrostfsIDNNSTLDPermissionKey).(string); res == FrostfsIDTLDRegistrationAllowed {
+		return true
+	}
+
+	return false
+}

nns/nns_contract.go

@@ -41,9 +41,14 @@ const (
 	// prefixRecord contains map from (token key + hash160(token name) + record type)
 	// to record.
 	prefixRecord byte = 0x22
-	//prefixGlobalDomain contains a flag indicating that this domain was created using GlobalDomain.
-	//This is necessary to distinguish it from regular CNAME records.
+	// prefixGlobalDomain contains a flag indicating that this domain was created using GlobalDomain.
+	// This is necessary to distinguish it from regular CNAME records.
 	prefixGlobalDomain byte = 0x23
+	// prefixCountSubDomains contains information about the number of domains in the zone.
+	// If it is nil, it will definitely be calculated on the first removal.
+	prefixCountSubDomains byte = 0x24
+	// prefixAutoCreated contains a flag indicating whether the TLD domain was created automatically.
+	prefixAutoCreated = 0x25
 )
 
 // Values constraints.
@@ -74,7 +79,7 @@ const (
 
 const (
 	// Cnametgt is a special TXT record ensuring all created subdomains point to the global domain - the value of this variable.
-	//It is guaranteed that two domains cannot point to the same global domain.
+	// It is guaranteed that two domains cannot point to the same global domain.
 	Cnametgt = "cnametgt"
 )
 
@@ -234,13 +239,10 @@ func IsAvailable(name string) bool {
 	ctx := storage.GetReadOnlyContext()
 	l := len(fragments)
 	if storage.Get(ctx, append([]byte{prefixRoot}, []byte(fragments[l-1])...)) == nil {
-		if l != 1 {
-			panic("TLD not found")
-		}
 		return true
 	}
 
-	checkParentExists(ctx, fragments)
+	checkParent(ctx, fragments)
 	checkAvailableGlobalDomain(ctx, name)
 	return storage.Get(ctx, append([]byte{prefixName}, getTokenKey([]byte(name))...)) == nil
 }
@@ -304,33 +306,27 @@ func extractCnametgt(ctx storage.Context, name, domain string) string {
 	return fragments[0] + "." + globalDomain
 }
 
-// checkParentExists panics if any domain from fragments doesn't exist or is expired.
-func checkParentExists(ctx storage.Context, fragments []string) {
-	if dom := parentExpired(ctx, fragments); dom != "" {
-		panic("domain does not exist or is expired: " + dom)
-	}
-}
-
-// parentExpired returns domain from fragments that doesn't exist or is expired.
-// first denotes the deepest subdomain to check.
-func parentExpired(ctx storage.Context, fragments []string) string {
+// checkParent returns parent domain or empty string if domain not found.
+func checkParent(ctx storage.Context, fragments []string) string {
 	now := int64(runtime.GetTime())
 	last := len(fragments) - 1
 	name := fragments[last]
+	parent := ""
 	for i := last; i > 0; i-- {
 		if i != last {
 			name = fragments[i] + "." + name
 		}
 		nsBytes := storage.Get(ctx, append([]byte{prefixName}, getTokenKey([]byte(name))...))
 		if nsBytes == nil {
-			return name
+			continue
 		}
 		ns := std.Deserialize(nsBytes.([]byte)).(NameState)
 		if now >= ns.Expiration {
-			return name
+			panic("domain expired: " + name)
 		}
+		parent = name
 	}
-	return ""
+	return parent
 }
 
 // Register registers a new domain with the specified owner and name if it's available.
@@ -342,24 +338,31 @@ func Register(name string, owner interop.Hash160, email string, refresh, retry,
 // Register registers a new domain with the specified owner and name if it's available.
 func register(ctx storage.Context, name string, owner interop.Hash160, email string, refresh, retry, expire, ttl int) bool {
 	fragments := splitAndCheck(name)
-	l := len(fragments)
-	tldKey := append([]byte{prefixRoot}, []byte(fragments[l-1])...)
+	countZone := len(fragments)
+	rootZone := []byte(fragments[countZone-1])
+	tldKey := append([]byte{prefixRoot}, rootZone...)
 
 	tldBytes := storage.Get(ctx, tldKey)
-	if l == 1 {
-		checkCommittee()
+	if countZone == 1 {
+		checkCommitteeAndFrostfsID(ctx, owner)
 		if tldBytes != nil {
 			panic("TLD already exists")
 		}
 		storage.Put(ctx, tldKey, 0)
 	} else {
-		if tldBytes == nil {
-			panic("TLD not found")
-		}
-		checkParentExists(ctx, fragments)
+		parent := checkParent(ctx, fragments)
+		if parent == "" {
+			parent = fragments[len(fragments)-1]
 
-		parentKey := getTokenKey([]byte(name[len(fragments[0])+1:]))
+			storage.Put(ctx, append([]byte{prefixAutoCreated}, rootZone...), true)
+			register(ctx, parent, owner, email, refresh, retry, expire, ttl)
+		}
+
+		parentKey := getTokenKey([]byte(parent))
 		nsBytes := storage.Get(ctx, append([]byte{prefixName}, parentKey...))
+		if nsBytes == nil {
+			panic("parent does not exist:" + parent)
+		}
 		ns := std.Deserialize(nsBytes.([]byte)).(NameState)
 		ns.checkAdmin()
 
@@ -403,6 +406,7 @@ func register(ctx storage.Context, name string, owner interop.Hash160, email str
 	}
 	checkAvailableGlobalDomain(ctx, name)
 
+	updateSubdDomainCounter(ctx, rootZone, countZone)
 	putNameStateWithKey(ctx, tokenKey, ns)
 	putSoaRecord(ctx, name, email, refresh, retry, expire, ttl)
 	updateBalance(ctx, []byte(name), owner, +1)
@@ -527,20 +531,100 @@ func deleteRecords(ctx storage.Context, name string, typ RecordType) {
 	runtime.Notify("DeleteRecords", name, typ)
 }
 
+// DeleteRecord delete a record of the specified type by data in the provided domain.
+// Returns false if the record was not found.
+func DeleteRecord(name string, typ RecordType, data string) bool {
+	tokenID := []byte(tokenIDFromName(name))
+	if !checkBaseRecords(typ, data) {
+		panic("invalid record data")
+	}
+	ctx := storage.GetContext()
+	ns := getNameState(ctx, tokenID)
+	ns.checkAdmin()
+	return deleteRecord(ctx, tokenID, name, typ, data)
+}
+
+func deleteRecord(ctx storage.Context, tokenId []byte, name string, typ RecordType, data string) bool {
+	recordsKey := getRecordsKeyByType(tokenId, name, typ)
+
+	var previousKey any
+	it := storage.Find(ctx, recordsKey, storage.KeysOnly)
+	for iterator.Next(it) {
+		key := iterator.Value(it).([]byte)
+		ss := storage.Get(ctx, key).([]byte)
+
+		ns := std.Deserialize(ss).(RecordState)
+		if ns.Name == name && ns.Type == typ && ns.Data == data {
+			previousKey = key
+			continue
+		}
+
+		if previousKey != nil {
+			data := storage.Get(ctx, key)
+			storage.Put(ctx, previousKey, data)
+			previousKey = key
+		}
+	}
+
+	if previousKey == nil {
+		return false
+	}
+
+	storage.Delete(ctx, previousKey)
+	runtime.Notify("DeleteRecord", name, typ)
+	return true
+}
+
 // DeleteDomain deletes the domain with the given name.
 func DeleteDomain(name string) {
 	ctx := storage.GetContext()
 	deleteDomain(ctx, name)
 }
 
+func countSubdomains(name string) int {
+	countSubDomains := 0
+	it := Tokens()
+	for iterator.Next(it) {
+		domain := iterator.Value(it)
+		if std.MemorySearch([]byte(domain.(string)), []byte(name)) > 0 {
+			countSubDomains = countSubDomains + 1
+		}
+	}
+	return countSubDomains
+}
+
 func deleteDomain(ctx storage.Context, name string) {
-	nameKey := append([]byte{prefixName}, getTokenKey([]byte(name))...)
-	tldBytes := storage.Get(ctx, nameKey)
-	if tldBytes == nil {
-		return
+	fragments := splitAndCheck(name)
+	parent := []byte(fragments[len(fragments)-1])
+	countSubDomainsKey := append([]byte{prefixCountSubDomains}, parent...)
+	autoCreatedPrefix := append([]byte{prefixAutoCreated}, parent...)
+
+	nsKey := append([]byte{prefixName}, getTokenKey([]byte(name))...)
+	nsRaw := storage.Get(ctx, nsKey)
+	if nsRaw == nil {
+		panic("domain not found")
 	}
 
-	globalDomainRaw := storage.Get(ctx, append([]byte{prefixGlobalDomain}, getTokenKey([]byte(name))...))
+	ns := std.Deserialize(nsRaw.([]byte)).(NameState)
+	ns.checkAdmin()
+
+	countSubDomain := 0
+	countSubDomainRaw := storage.Get(ctx, countSubDomainsKey)
+	if countSubDomainRaw != nil {
+		countSubDomain = common.FromFixedWidth64(countSubDomainRaw.([]byte))
+	} else {
+		countSubDomain = countSubdomains(fragments[len(fragments)-1])
+	}
+
+	if countSubDomain > 1 && len(fragments) == 1 {
+		panic("can't delete TLD domain that has subdomains")
+	}
+
+	countSubDomain = countSubDomain - 1
+	storage.Put(ctx, countSubDomainsKey, common.ToFixedWidth64(countSubDomain))
+
+	globalNSKey := append([]byte{prefixGlobalDomain}, getTokenKey([]byte(name))...)
+	globalDomainRaw := storage.Get(ctx, globalNSKey)
 	globalDomain := globalDomainRaw.(string)
 	if globalDomainRaw != nil && globalDomain != "" {
 		deleteDomain(ctx, globalDomain)
@@ -550,7 +634,19 @@ func deleteDomain(ctx storage.Context, name string) {
 	deleteRecords(ctx, name, TXT)
 	deleteRecords(ctx, name, A)
 	deleteRecords(ctx, name, AAAA)
-	storage.Delete(ctx, nameKey)
+	storage.Delete(ctx, nsKey)
+	storage.Delete(ctx, append([]byte{prefixRoot}, []byte(name)...))
+
+	isAutoCreated := storage.Get(ctx, autoCreatedPrefix)
+	if countSubDomain == 1 && isAutoCreated != nil && isAutoCreated.(bool) {
+		deleteDomain(ctx, fragments[len(fragments)-1])
+	}
+
+	if len(fragments) == 1 {
+		storage.Delete(ctx, countSubDomainsKey)
+		storage.Delete(ctx, autoCreatedPrefix)
+	}
+
 	runtime.Notify("DeleteDomain", name)
 }
 
@@ -624,7 +720,7 @@ func getNameState(ctx storage.Context, tokenID []byte) NameState {
 	tokenKey := getTokenKey(tokenID)
 	ns := getNameStateWithKey(ctx, tokenKey)
 	fragments := std.StringSplit(string(tokenID), ".")
-	checkParentExists(ctx, fragments)
+	checkParent(ctx, fragments)
 	return ns
 }
 
@@ -828,6 +924,14 @@ func isValid(address interop.Hash160) bool {
 	return address != nil && len(address) == interop.Hash160Len
 }
 
+// checkCommitteeAndFrostfsID panics if the script container is not signed by the committee.
+// or if the owner does not have permission in FrostfsID.
+func checkCommitteeAndFrostfsID(ctx storage.Context, owner interop.Hash160) {
+	if !checkFrostfsID(ctx, owner) {
+		checkCommittee()
+	}
+}
+
 // checkCommittee panics if the script container is not signed by the committee.
 func checkCommittee() {
 	committee := neo.GetCommittee()
@@ -1070,3 +1174,16 @@ func getAllRecords(ctx storage.Context, name string) iterator.Iterator {
 	recordsKey := getRecordsKey(tokenID, name)
 	return storage.Find(ctx, recordsKey, storage.ValuesOnly|storage.DeserializeValues)
 }
+
+func updateSubdDomainCounter(ctx storage.Context, rootZone []byte, countZone int) {
+	countSubDomain := 0
+	delInfoRaw := storage.Get(ctx, append([]byte{prefixCountSubDomains}, rootZone...))
+	if delInfoRaw != nil {
+		countSubDomain = common.FromFixedWidth64(delInfoRaw.([]byte))
+	}
+
+	if delInfoRaw != nil || countZone == 1 {
+		countSubDomain = countSubDomain + 1
+		storage.Put(ctx, append([]byte{prefixCountSubDomains}, rootZone...), common.ToFixedWidth64(countSubDomain))
+	}
+}

rpcclient/frostfsid/client.go

@@ -222,6 +222,11 @@ func (c *ContractReader) GetSubjectExtended(addr util.Uint160) ([]stackitem.Item
 	return unwrap.Array(c.invoker.Call(c.hash, "getSubjectExtended", addr))
 }
 
+// GetSubjectKV invokes `getSubjectKV` method of contract.
+func (c *ContractReader) GetSubjectKV(addr util.Uint160, name string) (string, error) {
+	return unwrap.UTF8String(c.invoker.Call(c.hash, "getSubjectKV", addr, name))
+}
+
 // GetSubjectKeyByName invokes `getSubjectKeyByName` method of contract.
 func (c *ContractReader) GetSubjectKeyByName(ns string, name string) (*keys.PublicKey, error) {
 	return unwrap.PublicKey(c.invoker.Call(c.hash, "getSubjectKeyByName", ns, name))

rpcclient/nns/client.go

@@ -29,6 +29,12 @@ type AddRecordEvent struct {
 	Type *big.Int
 }
 
+// DeleteRecordEvent represents "DeleteRecord" event emitted by the contract.
+type DeleteRecordEvent struct {
+	Name string
+	Type *big.Int
+}
+
 // DeleteRecordsEvent represents "DeleteRecords" event emitted by the contract.
 type DeleteRecordsEvent struct {
 	Name string
@@ -85,6 +91,20 @@ func New(actor Actor, hash util.Uint160) *Contract {
 	return &Contract{ContractReader{nep11ndt.NonDivisibleReader, actor, hash}, nep11ndt.BaseWriter, actor, hash}
 }
 
+// GetAllRecords invokes `getAllRecords` method of contract.
+func (c *ContractReader) GetAllRecords(name string) (uuid.UUID, result.Iterator, error) {
+	return unwrap.SessionIterator(c.invoker.Call(c.hash, "getAllRecords", name))
+}
+
+// GetAllRecordsExpanded is similar to GetAllRecords (uses the same contract
+// method), but can be useful if the server used doesn't support sessions and
+// doesn't expand iterators. It creates a script that will get the specified
+// number of result items from the iterator right in the VM and return them to
+// you. It's only limited by VM stack and GAS available for RPC invocations.
+func (c *ContractReader) GetAllRecordsExpanded(name string, _numOfIteratorItems int) ([]stackitem.Item, error) {
+	return unwrap.Array(c.invoker.CallAndExpandIterator(c.hash, "getAllRecords", _numOfIteratorItems, name))
+}
+
 // GetPrice invokes `getPrice` method of contract.
 func (c *ContractReader) GetPrice() (*big.Int, error) {
 	return unwrap.BigInt(c.invoker.Call(c.hash, "getPrice"))
@@ -168,6 +188,44 @@ func (c *Contract) DeleteDomainUnsigned(name string) (*transaction.Transaction,
 	return c.actor.MakeUnsignedCall(c.hash, "deleteDomain", nil, name)
 }
 
+func (c *Contract) scriptForDeleteRecord(name string, typ *big.Int, data string) ([]byte, error) {
+	return smartcontract.CreateCallWithAssertScript(c.hash, "deleteRecord", name, typ, data)
+}
+
+// DeleteRecord creates a transaction invoking `deleteRecord` method of the contract.
+// This transaction is signed and immediately sent to the network.
+// The values returned are its hash, ValidUntilBlock value and error if any.
+func (c *Contract) DeleteRecord(name string, typ *big.Int, data string) (util.Uint256, uint32, error) {
+	script, err := c.scriptForDeleteRecord(name, typ, data)
+	if err != nil {
+		return util.Uint256{}, 0, err
+	}
+	return c.actor.SendRun(script)
+}
+
+// DeleteRecordTransaction creates a transaction invoking `deleteRecord` method of the contract.
+// This transaction is signed, but not sent to the network, instead it's
+// returned to the caller.
+func (c *Contract) DeleteRecordTransaction(name string, typ *big.Int, data string) (*transaction.Transaction, error) {
+	script, err := c.scriptForDeleteRecord(name, typ, data)
+	if err != nil {
+		return nil, err
+	}
+	return c.actor.MakeRun(script)
+}
+
+// DeleteRecordUnsigned creates a transaction invoking `deleteRecord` method of the contract.
+// This transaction is not signed, it's simply returned to the caller.
+// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
+// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
+func (c *Contract) DeleteRecordUnsigned(name string, typ *big.Int, data string) (*transaction.Transaction, error) {
+	script, err := c.scriptForDeleteRecord(name, typ, data)
+	if err != nil {
+		return nil, err
+	}
+	return c.actor.MakeUnsignedRun(script, nil)
+}
+
 // DeleteRecords creates a transaction invoking `deleteRecords` method of the contract.
 // This transaction is signed and immediately sent to the network.
 // The values returned are its hash, ValidUntilBlock value and error if any.
@@ -190,28 +248,6 @@ func (c *Contract) DeleteRecordsUnsigned(name string, typ *big.Int) (*transactio
 	return c.actor.MakeUnsignedCall(c.hash, "deleteRecords", nil, name, typ)
 }
 
-// GetAllRecords creates a transaction invoking `getAllRecords` method of the contract.
-// This transaction is signed and immediately sent to the network.
-// The values returned are its hash, ValidUntilBlock value and error if any.
-func (c *Contract) GetAllRecords(name string) (util.Uint256, uint32, error) {
-	return c.actor.SendCall(c.hash, "getAllRecords", name)
-}
-
-// GetAllRecordsTransaction creates a transaction invoking `getAllRecords` method of the contract.
-// This transaction is signed, but not sent to the network, instead it's
-// returned to the caller.
-func (c *Contract) GetAllRecordsTransaction(name string) (*transaction.Transaction, error) {
-	return c.actor.MakeCall(c.hash, "getAllRecords", name)
-}
-
-// GetAllRecordsUnsigned creates a transaction invoking `getAllRecords` method of the contract.
-// This transaction is not signed, it's simply returned to the caller.
-// Any fields of it that do not affect fees can be changed (ValidUntilBlock,
-// Nonce), fee values (NetworkFee, SystemFee) can be increased as well.
-func (c *Contract) GetAllRecordsUnsigned(name string) (*transaction.Transaction, error) {
-	return c.actor.MakeUnsignedCall(c.hash, "getAllRecords", nil, name)
-}
-
 func (c *Contract) scriptForRegister(name string, owner util.Uint160, email string, refresh *big.Int, retry *big.Int, expire *big.Int, ttl *big.Int) ([]byte, error) {
 	return smartcontract.CreateCallWithAssertScript(c.hash, "register", name, owner, email, refresh, retry, expire, ttl)
 }
@@ -510,6 +546,73 @@ func (e *AddRecordEvent) FromStackItem(item *stackitem.Array) error {
 	return nil
 }
 
+// DeleteRecordEventsFromApplicationLog retrieves a set of all emitted events
+// with "DeleteRecord" name from the provided [result.ApplicationLog].
+func DeleteRecordEventsFromApplicationLog(log *result.ApplicationLog) ([]*DeleteRecordEvent, error) {
+	if log == nil {
+		return nil, errors.New("nil application log")
+	}
+
+	var res []*DeleteRecordEvent
+	for i, ex := range log.Executions {
+		for j, e := range ex.Events {
+			if e.Name != "DeleteRecord" {
+				continue
+			}
+			event := new(DeleteRecordEvent)
+			err := event.FromStackItem(e.Item)
+			if err != nil {
+				return nil, fmt.Errorf("failed to deserialize DeleteRecordEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
+			}
+			res = append(res, event)
+		}
+	}
+
+	return res, nil
+}
+
+// FromStackItem converts provided [stackitem.Array] to DeleteRecordEvent or
+// returns an error if it's not possible to do to so.
+func (e *DeleteRecordEvent) FromStackItem(item *stackitem.Array) error {
+	if item == nil {
+		return errors.New("nil item")
+	}
+	arr, ok := item.Value().([]stackitem.Item)
+	if !ok {
+		return errors.New("not an array")
+	}
+	if len(arr) != 2 {
+		return errors.New("wrong number of structure elements")
+	}
+
+	var (
+		index = -1
+		err   error
+	)
+	index++
+	e.Name, err = func(item stackitem.Item) (string, error) {
+		b, err := item.TryBytes()
+		if err != nil {
+			return "", err
+		}
+		if !utf8.Valid(b) {
+			return "", errors.New("not a UTF-8 string")
+		}
+		return string(b), nil
+	}(arr[index])
+	if err != nil {
+		return fmt.Errorf("field Name: %w", err)
+	}
+
+	index++
+	e.Type, err = arr[index].TryInteger()
+	if err != nil {
+		return fmt.Errorf("field Type: %w", err)
+	}
+
+	return nil
+}
+
 // DeleteRecordsEventsFromApplicationLog retrieves a set of all emitted events
 // with "DeleteRecords" name from the provided [result.ApplicationLog].
 func DeleteRecordsEventsFromApplicationLog(log *result.ApplicationLog) ([]*DeleteRecordsEvent, error) {

tests/frostfsid_test.go

@@ -238,6 +238,13 @@ func TestFrostFSID_SubjectManagement(t *testing.T) {
 			subj = parseSubject(t, s)
 			require.True(t, subjKey.PublicKey().Equal(&subj.PrimaryKey), "keys must be the same")
 
+			t.Run("with GetSubject", func(t *testing.T) {
+				s, err = anonInvoker.TestInvoke(t, getSubjectMethod, subjKey.PublicKey().GetScriptHash())
+				require.NoError(t, err)
+				subj = parseSubject(t, s)
+				require.True(t, subjKey.PublicKey().Equal(&subj.PrimaryKey), "keys must be the same")
+			})
+
 			t.Run("remove subject key", func(t *testing.T) {
 				anonInvoker.InvokeFail(t, notWitnessedError, removeSubjectKeyMethod, subjKeyAddr, subjNewKey.PublicKey().Bytes())
 				invoker.Invoke(t, stackitem.Null{}, removeSubjectKeyMethod, subjKeyAddr, subjNewKey.PublicKey().Bytes())
@@ -604,6 +611,44 @@ func TestFrostFSID_GroupManagement(t *testing.T) {
 	})
 }
 
+func TestAdditionalKeyFromPrimarySubject(t *testing.T) {
+	f := newFrostFSIDInvoker(t)
+	invoker := f.OwnerInvoker()
+
+	subjAPrimaryKey, err := keys.NewPrivateKey()
+	require.NoError(t, err)
+	subjAKeyAddr := subjAPrimaryKey.PublicKey().GetScriptHash()
+
+	subjBPrimaryKey, err := keys.NewPrivateKey()
+	require.NoError(t, err)
+	subjBKeyAddr := subjBPrimaryKey.PublicKey().GetScriptHash()
+
+	subjCPrimaryKey, err := keys.NewPrivateKey()
+	require.NoError(t, err)
+
+	subjDPrimaryKey, err := keys.NewPrivateKey()
+	require.NoError(t, err)
+
+	invoker.Invoke(t, stackitem.Null{}, createSubjectMethod, defaultNamespace, subjAPrimaryKey.PublicKey().Bytes())
+
+	invoker.Invoke(t, stackitem.Null{}, createSubjectMethod, defaultNamespace, subjBPrimaryKey.PublicKey().Bytes())
+
+	invoker.InvokeFail(t, "key is occupied", addSubjectKeyMethod, subjBKeyAddr, subjAPrimaryKey.PublicKey().Bytes())
+
+	invoker.Invoke(t, stackitem.Null{}, addSubjectKeyMethod, subjAKeyAddr, subjCPrimaryKey.PublicKey().Bytes())
+	invoker.InvokeFail(t, "key is occupied", addSubjectKeyMethod, subjBKeyAddr, subjCPrimaryKey.PublicKey().Bytes())
+
+	invoker.Invoke(t, stackitem.Null{}, addSubjectKeyMethod, subjAKeyAddr, subjDPrimaryKey.PublicKey().Bytes())
+
+	invoker.InvokeFail(t, "key is occupied", addSubjectKeyMethod, subjBKeyAddr, subjDPrimaryKey.PublicKey().Bytes())
+	invoker.Invoke(t, stackitem.Null{}, removeSubjectKeyMethod, subjAKeyAddr, subjDPrimaryKey.PublicKey().Bytes())
+	invoker.Invoke(t, stackitem.Null{}, addSubjectKeyMethod, subjBKeyAddr, subjDPrimaryKey.PublicKey().Bytes())
+
+	invoker.InvokeFail(t, "key is occupied", addSubjectKeyMethod, subjAKeyAddr, subjDPrimaryKey.PublicKey().Bytes())
+	invoker.Invoke(t, stackitem.Null{}, deleteSubjectMethod, subjBKeyAddr)
+	invoker.Invoke(t, stackitem.Null{}, addSubjectKeyMethod, subjAKeyAddr, subjDPrimaryKey.PublicKey().Bytes())
+}
+
 func checkPublicKeyResult(t *testing.T, s *vm.Stack, err error, key *keys.PrivateKey) {
 	if key == nil {
 		require.ErrorContains(t, err, "not found")

tests/nns_test.go

@@ -12,10 +12,12 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/core/interop/storage"
 	"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/neotest"
 	"github.com/nspcc-dev/neo-go/pkg/rpcclient/gas"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
+	"github.com/nspcc-dev/neo-go/pkg/wallet"
 	"github.com/stretchr/testify/require"
 )
 
@@ -23,8 +25,7 @@ const nnsPath = "../nns"
 
 const msPerYear = 365 * 24 * time.Hour / time.Millisecond
 
-func newNNSInvoker(t *testing.T, addRoot bool) *neotest.ContractInvoker {
-	e := newExecutor(t)
+func deployNNS(t *testing.T, e *neotest.Executor, addRoot bool) *neotest.ContractInvoker {
 	ctr := neotest.CompileFile(t, e.CommitteeHash, nnsPath, path.Join(nnsPath, "config.yml"))
 	e.DeployContract(t, ctr, nil)
 
@@ -39,6 +40,28 @@ func newNNSInvoker(t *testing.T, addRoot bool) *neotest.ContractInvoker {
 	return c
 }
 
+func newNNSInvoker(t *testing.T, addRoot bool) *neotest.ContractInvoker {
+	e := newExecutor(t)
+	return deployNNS(t, e, addRoot)
+}
+
+func newNNSInvokerWithFrostfsID(t *testing.T, addRoot bool) (*neotest.ContractInvoker, *neotest.ContractInvoker) {
+	e := newExecutor(t)
+	c := deployNNS(t, e, addRoot)
+
+	frostfdID := deployFrostFSIDContract(t, e, e.CommitteeHash)
+	c.Invoke(t, true, "register",
+		nns.FrostfsIDNNSName, c.CommitteeHash,
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+
+	c.Invoke(t, stackitem.Null{}, "addRecord",
+		nns.FrostfsIDNNSName, int64(nns.TXT), frostfdID.StringLE())
+
+	c.Invoke(t, stackitem.Null{}, "addRecord",
+		nns.FrostfsIDNNSName, int64(nns.TXT), address.Uint160ToString(frostfdID))
+	return e.NewInvoker(c.Hash), e.CommitteeInvoker(frostfdID)
+}
+
 func TestNNSGeneric(t *testing.T) {
 	c := newNNSInvoker(t, false)
 
@@ -100,6 +123,18 @@ func TestNNSRegister(t *testing.T) {
 		"com", accTop.ScriptHash(),
 		"myemail@frostfs.info", refresh, retry, expire, ttl)
 
+	c1.Invoke(t, true, "register",
+		"aa.bb.zz", accTop.ScriptHash(),
+		"myemail@frostfs.info", refresh, retry, expire, ttl)
+
+	c1.InvokeFail(t, "TLD already exists", "register",
+		"zz", accTop.ScriptHash(),
+		"myemail@frostfs.info", refresh, retry, expire, ttl)
+
+	c1.Invoke(t, true, "register",
+		"xx.bb.zz", accTop.ScriptHash(),
+		"myemail@frostfs.info", refresh, retry, expire, ttl)
+
 	acc := c.NewAccount(t)
 	c2 := c.WithSigners(c.Committee, acc)
 	c2.InvokeFail(t, "not witnessed by admin", "register",
@@ -142,8 +177,10 @@ func TestNNSRegister(t *testing.T) {
 
 	cAcc := c.WithSigners(acc)
 
-	expected = stackitem.NewArray([]stackitem.Item{stackitem.NewByteArray([]byte("testdomain.com")),
-		stackitem.NewBigInteger(big.NewInt(int64(nns.TXT)))})
+	expected = stackitem.NewArray([]stackitem.Item{
+		stackitem.NewByteArray([]byte("testdomain.com")),
+		stackitem.NewBigInteger(big.NewInt(int64(nns.TXT))),
+	})
 	tx = cAcc.Invoke(t, stackitem.Null{}, "addRecord",
 		"testdomain.com", int64(nns.TXT), "first TXT record")
 	c.CheckTxNotificationEvent(t, tx, 0, state.NotificationEvent{ScriptHash: c.Hash, Name: "AddRecord", Item: expected})
@@ -159,8 +196,10 @@ func TestNNSRegister(t *testing.T) {
 	})
 	c.Invoke(t, expected, "getRecords", "testdomain.com", int64(nns.TXT))
 
-	expected = stackitem.NewArray([]stackitem.Item{stackitem.NewByteArray([]byte("testdomain.com")),
-		stackitem.NewBigInteger(big.NewInt(int64(nns.TXT)))})
+	expected = stackitem.NewArray([]stackitem.Item{
+		stackitem.NewByteArray([]byte("testdomain.com")),
+		stackitem.NewBigInteger(big.NewInt(int64(nns.TXT))),
+	})
 	tx = cAcc.Invoke(t, stackitem.Null{}, "setRecord",
 		"testdomain.com", int64(nns.TXT), int64(0), "replaced first")
 	c.CheckTxNotificationEvent(t, tx, 0, state.NotificationEvent{ScriptHash: c.Hash, Name: "AddRecord", Item: expected})
@@ -172,15 +211,60 @@ func TestNNSRegister(t *testing.T) {
 	c.Invoke(t, expected, "getRecords", "testdomain.com", int64(nns.TXT))
 
 	tx = cAcc.Invoke(t, stackitem.Null{}, "deleteRecords", "testdomain.com", int64(nns.TXT))
-	expected = stackitem.NewArray([]stackitem.Item{stackitem.NewByteArray([]byte("testdomain.com")),
-		stackitem.NewBigInteger(big.NewInt(int64(nns.TXT)))})
+	expected = stackitem.NewArray([]stackitem.Item{
+		stackitem.NewByteArray([]byte("testdomain.com")),
+		stackitem.NewBigInteger(big.NewInt(int64(nns.TXT))),
+	})
 	c.CheckTxNotificationEvent(t, tx, 0, state.NotificationEvent{ScriptHash: c.Hash, Name: "DeleteRecords", Item: expected})
 
 	c.Invoke(t, stackitem.Null{}, "getRecords", "testdomain.com", int64(nns.TXT))
 
+	cAcc.Invoke(t, stackitem.Null{}, "addRecord",
+		"testdomain.com", int64(nns.TXT), "rec1")
+
+	cAcc.Invoke(t, stackitem.Null{}, "addRecord",
+		"testdomain.com", int64(nns.TXT), "rec2")
+
+	cAcc.Invoke(t, stackitem.Null{}, "addRecord",
+		"testdomain.com", int64(nns.TXT), "rec3")
+
+	cAcc.Invoke(t, stackitem.Null{}, "addRecord",
+		"testdomain.com", int64(nns.TXT), "rec4")
+
+	cAcc.Invoke(t, false, "deleteRecord",
+		"testdomain.com", int64(nns.TXT), "rec9999")
+
+	cAcc.Invoke(t, true, "deleteRecord",
+		"testdomain.com", int64(nns.TXT), "rec1")
+
+	expected = stackitem.NewArray([]stackitem.Item{
+		stackitem.NewByteArray([]byte("rec2")),
+		stackitem.NewByteArray([]byte("rec3")),
+		stackitem.NewByteArray([]byte("rec4")),
+	})
+	c.Invoke(t, expected, "getRecords", "testdomain.com", int64(nns.TXT))
+
+	cAcc.Invoke(t, true, "deleteRecord",
+		"testdomain.com", int64(nns.TXT), "rec4")
+
+	cAcc.Invoke(t, true, "deleteRecord",
+		"testdomain.com", int64(nns.TXT), "rec2")
+
+	expected = stackitem.NewArray([]stackitem.Item{
+		stackitem.NewByteArray([]byte("rec3")),
+	})
+	c.Invoke(t, expected, "getRecords", "testdomain.com", int64(nns.TXT))
+
+	cAcc.Invoke(t, true, "deleteRecord",
+		"testdomain.com", int64(nns.TXT), "rec3")
+
+	c.Invoke(t, stackitem.Null{}, "getRecords", "testdomain.com", int64(nns.TXT))
+
 	tx = cAcc.Invoke(t, stackitem.Null{}, "deleteDomain", "testdomain.com")
-	expected = stackitem.NewArray([]stackitem.Item{stackitem.NewByteArray([]byte("testdomain.com")),
-		stackitem.NewBigInteger(big.NewInt(int64(nns.CNAME)))})
+	expected = stackitem.NewArray([]stackitem.Item{
+		stackitem.NewByteArray([]byte("testdomain.com")),
+		stackitem.NewBigInteger(big.NewInt(int64(nns.CNAME))),
+	})
 	c.CheckTxNotificationEvent(t, tx, 0, state.NotificationEvent{ScriptHash: c.Hash, Name: "DeleteRecords", Item: expected})
 
 	expected = stackitem.NewArray([]stackitem.Item{stackitem.NewByteArray([]byte("testdomain.com"))})
@@ -189,6 +273,69 @@ func TestNNSRegister(t *testing.T) {
 	c.InvokeFail(t, "token not found", "getRecords", "testdomain.com", int64(nns.SOA))
 }
 
+func TestDeleteDomain(t *testing.T) {
+	c := newNNSInvoker(t, false)
+
+	acc1 := c.NewAccount(t)
+	c1 := c.WithSigners(c.Committee, acc1)
+
+	acc2 := c.NewAccount(t)
+	c2 := c.WithSigners(c.Committee, acc2)
+	c1.Invoke(t, true, "register",
+		"com", acc1.ScriptHash(),
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+
+	c1.Invoke(t, true, "register",
+		"testdomain.com", acc1.ScriptHash(),
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+
+	c1.Invoke(t, true, "register",
+		"domik.testdomain.com", acc1.ScriptHash(),
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+
+	c1.InvokeFail(t, "domain not found", "deleteDomain", "ru")
+	c1.InvokeFail(t, "can't delete TLD domain that has subdomains", "deleteDomain", "com")
+	c1.Invoke(t, stackitem.Null{}, "deleteDomain", "testdomain.com")
+
+	c1.Invoke(t, true, "register",
+		"aa.bb.zz", acc1.ScriptHash(),
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+
+	c1.InvokeFail(t, "TLD already exists", "register",
+		"zz", acc1.ScriptHash(),
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+
+	c1.Invoke(t, stackitem.Null{}, "deleteDomain", "aa.bb.zz")
+
+	c1.Invoke(t, true, "register",
+		"zz", acc1.ScriptHash(),
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+
+	c1.Invoke(t, true, "register",
+		"cn", acc1.ScriptHash(),
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+
+	c2.InvokeFail(t, "not witnessed by admin", "deleteDomain", "cn")
+
+	c1.Invoke(t, stackitem.Null{}, "deleteDomain", "cn")
+
+	c2.Invoke(t, true, "register",
+		"cn", acc2.ScriptHash(),
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+
+	c1.Invoke(t, true, "register",
+		"gu.bububu.bubu.bu", c.CommitteeHash,
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+
+	c1.Invoke(t, true, "register",
+		"buu.gu.bububu.bubu.bu", c.CommitteeHash,
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+
+	c1.Invoke(t, true, "register",
+		"bubu.bu", c.CommitteeHash,
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+}
+
 func TestGlobalDomain(t *testing.T) {
 	c := newNNSInvoker(t, false)
 
@@ -232,6 +379,7 @@ func TestGlobalDomain(t *testing.T) {
 
 	c.InvokeFail(t, "global domain is already taken", "isAvailable", "dom.testdomain.com")
 }
+
 func TestTLDRecord(t *testing.T) {
 	c := newNNSInvoker(t, true)
 	c.Invoke(t, stackitem.Null{}, "addRecord",
@@ -256,11 +404,6 @@ func TestNNSRegisterMulti(t *testing.T) {
 	cBoth.Invoke(t, true, "register", args...)
 
 	c1 := c.WithSigners(acc)
-	t.Run("parent domain is missing", func(t *testing.T) {
-		msg := "domain does not exist or is expired: fs.neo.com"
-		args[0] = "testnet.fs.neo.com"
-		c1.InvokeFail(t, msg, "register", args...)
-	})
 
 	args[0] = "fs.neo.com"
 	c1.Invoke(t, true, "register", args...)
@@ -416,11 +559,44 @@ func TestNNSSetAdmin(t *testing.T) {
 		"testdomain.com", int64(nns.TXT), "will be added")
 }
 
+func TestNNS_Frostfsid(t *testing.T) {
+	nnsInv, f := newNNSInvokerWithFrostfsID(t, false)
+
+	acc, err := wallet.NewAccount()
+	require.NoError(t, err)
+	nnsUserInv := nnsInv.NewInvoker(nnsInv.Hash, newSigner(t, nnsInv, acc))
+
+	nnsUserInv.InvokeFail(t, "not witnessed by committee", "register",
+		"ddd", acc.ScriptHash(),
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+
+	nnsUserInv.InvokeFail(t, "not witnessed by committee", "register",
+		"testdomain.kz", acc.ScriptHash(),
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+
+	f.Invoke(t, stackitem.Null{}, createSubjectMethod, "", acc.PrivateKey().PublicKey().Bytes())
+
+	nnsUserInv.InvokeFail(t, "not witnessed by committee", "register",
+		"testdomain.kz", acc.ScriptHash(),
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+
+	f.Invoke(t, stackitem.Null{}, setSubjectKVMethod, acc.ScriptHash(), nns.FrostfsIDNNSTLDPermissionKey, nns.FrostfsIDTLDRegistrationAllowed)
+
+	nnsUserInv.Invoke(t, true, "register",
+		"testdomain.kz", acc.ScriptHash(),
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+
+	f.Invoke(t, stackitem.Null{}, deleteSubjectKVMethod, acc.ScriptHash(), nns.FrostfsIDNNSTLDPermissionKey)
+
+	nnsUserInv.InvokeFail(t, "not witnessed by committee", "register",
+		"testdomain.uz", acc.ScriptHash(),
+		"myemail@frostfs.info", defaultRefresh, defaultRetry, defaultExpire, defaultTTL)
+}
+
 func TestNNSIsAvailable(t *testing.T) {
 	c := newNNSInvoker(t, false)
 
 	c.Invoke(t, true, "isAvailable", "com")
-	c.InvokeFail(t, "TLD not found", "isAvailable", "domain.com")
 
 	refresh, retry, expire, ttl := int64(101), int64(102), int64(103), int64(104)
 	c.Invoke(t, true, "register",
@@ -433,7 +609,6 @@ func TestNNSIsAvailable(t *testing.T) {
 	acc := c.NewAccount(t)
 	c1 := c.WithSigners(c.Committee, acc)
 
-	c1.InvokeFail(t, "domain does not exist or is expired: domain.com", "isAvailable", "dom.domain.com")
 	c1.Invoke(t, true, "register",
 		"domain.com", acc.ScriptHash(),
 		"myemail@frostfs.info", refresh, retry, expire, ttl)
@@ -445,7 +620,6 @@ func TestNNSIsAvailable(t *testing.T) {
 	c.Invoke(t, false, "isAvailable", "domain.com")
 
 	c.Invoke(t, true, "isAvailable", "dom.domain.com")
-	c.InvokeFail(t, "domain does not exist or is expired: dom.domain.com", "isAvailable", "dom.dom.domain.com")
 
 	c1.Invoke(t, true, "register",
 		"dom.domain.com", acc.ScriptHash(),