diff --git a/product-source/guanghu-knowledge-base/server/domain-access-orchestrator.test.ts b/product-source/guanghu-knowledge-base/server/domain-access-orchestrator.test.ts
index 21d35cd..90afb47 100644
--- a/product-source/guanghu-knowledge-base/server/domain-access-orchestrator.test.ts
+++ b/product-source/guanghu-knowledge-base/server/domain-access-orchestrator.test.ts
@@ -3,16 +3,21 @@ import assert from 'node:assert/strict';
 import { createHash, generateKeyPairSync, sign } from 'node:crypto';
 import { domainManifestSigningBytes } from './domain-access.js';
 import { DomainAccessOrchestrator } from './domain-access-orchestrator.js';
+import { nodeRegistrationClaimSigningBytes } from './node-registration.js';
+import { NodeRegistrationSnapshotLoader } from './node-registration-snapshot.js';
 import { TrustedSignerSnapshotLoader } from './trusted-signer-snapshot.js';
 
 const NOW = 1_786_291_200_000;
 const DOMAIN_ID = 'DOM-FIFTH-0001';
 const NODE_ID = 'LOCAL-001';
 const NODE_TYPE = 'local-terminal' as const;
+const ACCOUNT_ID = 'bingshuo';
 const COMMIT = 'a'.repeat(40);
 const ANCHOR_URL = 'https://guanghulab.com/api/ai/v1/anchor';
-const REGISTRY_URL = `https://guanghulab.com/code/bingshuo/guanghu-ice-heart/raw/commit/${COMMIT}/routing/trusted-domain-manifest-signers.json`;
-const { privateKey, publicKey } = generateKeyPairSync('ed25519');
+const SIGNER_REGISTRY_URL = `https://guanghulab.com/code/bingshuo/guanghu-ice-heart/raw/commit/${COMMIT}/routing/trusted-domain-manifest-signers.json`;
+const NODE_REGISTRY_URL = `https://guanghulab.com/code/bingshuo/guanghu-ice-heart/raw/commit/${COMMIT}/routing/node-registration-endpoints.json`;
+const manifestKeys = generateKeyPairSync('ed25519');
+const registrationKeys = generateKeyPairSync('ed25519');
 
 function anchor() {
   return {
@@ -29,6 +34,11 @@ function anchor() {
         id: 'GH-AIOS-TRUSTED-DOMAIN-MANIFEST-SIGNERS-001',
         version: '1.0.0',
       },
+      node_registration_endpoints: {
+        path: 'routing/node-registration-endpoints.json',
+        id: 'GH-AIOS-NODE-REGISTRATION-ENDPOINTS-001',
+        version: '1.0.0',
+      },
     },
     navigation_source: {
       anchor_id: 'GLW-PUBLIC-NAV-ANCHOR-001',
@@ -39,7 +49,7 @@ function anchor() {
   };
 }
 
-function registry(signers: unknown[] = []) {
+function signerRegistry(signers: unknown[] = []) {
   return {
     registryId: 'GH-AIOS-TRUSTED-DOMAIN-MANIFEST-SIGNERS-001',
     schema: 'gh-aios.trusted-domain-manifest-signers/v1',
@@ -53,23 +63,72 @@ function activeSigner() {
   return {
     algorithm: 'Ed25519',
     domainIds: [DOMAIN_ID],
-    publicKeyPem: publicKey.export({ format: 'pem', type: 'spki' }).toString(),
+    publicKeyPem: manifestKeys.publicKey.export({ format: 'pem', type: 'spki' }).toString(),
     repositoryId: 'REPO-014',
     signerId: 'GH-LIGHTHOUSE-001',
     status: 'ACTIVE',
   };
 }
 
-function loader(readRegistry: () => unknown = () => registry()) {
+function nodeRegistry(version = '1.0.0') {
+  return {
+    endpoints: [{
+      algorithm: 'Ed25519',
+      domainIds: [DOMAIN_ID],
+      endpointId: 'GH-NODE-REG-001',
+      nodeTypes: [NODE_TYPE],
+      publicKeyPem: registrationKeys.publicKey.export({ format: 'pem', type: 'spki' }).toString(),
+      signerId: 'GH-NODE-REG-SIGNER-001',
+      status: 'ACTIVE',
+      url: 'https://guanghulab.com/api/ai/v1/node-registrations/claims',
+    }],
+    registryId: 'GH-AIOS-NODE-REGISTRATION-ENDPOINTS-001',
+    schema: 'gh-aios.node-registration-endpoints/v1',
+    state: 'CURRENT',
+    version,
+  };
+}
+
+function signerLoader(readRegistry: () => unknown = () => signerRegistry()) {
   return new TrustedSignerSnapshotLoader({
     async fetchJson(url) {
       if (url === ANCHOR_URL) return anchor();
-      if (url === REGISTRY_URL) return readRegistry();
+      if (url === SIGNER_REGISTRY_URL) return readRegistry();
       throw new Error('unexpected_url');
     },
   });
 }
 
+function registrationLoader(readRegistry: () => unknown = () => nodeRegistry()) {
+  return new NodeRegistrationSnapshotLoader({
+    async fetchJson(url) {
+      if (url === ANCHOR_URL) return anchor();
+      if (url === NODE_REGISTRY_URL) return readRegistry();
+      throw new Error('unexpected_url');
+    },
+  });
+}
+
+function validRegistrationClaim() {
+  const payload = {
+    accountId: ACCOUNT_ID,
+    claimId: 'NODE-CLAIM-001',
+    domainId: DOMAIN_ID,
+    endpointId: 'GH-NODE-REG-001',
+    expiresAt: NOW + 60_000,
+    issuedAt: NOW - 1_000,
+    nodeId: NODE_ID,
+    nodeKeyFingerprint: 'c'.repeat(64),
+    nodeType: NODE_TYPE,
+    schema: 'gh-aios.node-registration-claim/v1' as const,
+    signerId: 'GH-NODE-REG-SIGNER-001',
+  };
+  return {
+    ...payload,
+    signature: sign(null, nodeRegistrationClaimSigningBytes(payload), registrationKeys.privateKey).toString('base64'),
+  };
+}
+
 function validHandoff() {
   const payload = {
     domainId: DOMAIN_ID,
@@ -93,7 +152,7 @@ function validHandoff() {
     manifest: {
       digest,
       ...payload,
-      signature: sign(null, bytes, privateKey).toString('base64'),
+      signature: sign(null, bytes, manifestKeys.privateKey).toString('base64'),
     },
     sessionCapability: {
       capabilityId: 'CAP-001',
@@ -106,32 +165,37 @@ function validHandoff() {
   };
 }
 
-test('projects public trust health without asking for a handoff before login', async () => {
+const loggedOutIdentity = { async read() { return { accountId: '', accountVerified: false, nodeId: '' }; } };
+const loggedInIdentity = { async read() { return { accountId: ACCOUNT_ID, accountVerified: true, nodeId: NODE_ID }; } };
+const validRegistrationSource = { async read() { return validRegistrationClaim(); } };
+
+test('projects both trust-source states without asking for claims or handoff before login', async () => {
+  let claimReads = 0;
   let handoffReads = 0;
   const orchestrator = new DomainAccessOrchestrator(
-    loader(),
-    { async read() { return { accountVerified: false, nodeId: '', nodeRegistrationVerified: false }; } },
+    signerLoader(),
+    registrationLoader(),
+    loggedOutIdentity,
+    { async read() { claimReads += 1; return null; } },
     { async read() { handoffReads += 1; return null; } },
   );
 
   const status = await orchestrator.domainAccess(DOMAIN_ID, NODE_TYPE, NOW);
 
+  assert.equal(claimReads, 0);
   assert.equal(handoffReads, 0);
   assert.equal(status.stage, 'login-required');
   assert.equal(status.runtimeReady, false);
-  assert.equal(status.localWorkspaceAllowed, true);
-  assert.deepEqual(status.trustSource, {
-    status: 'CURRENT',
-    sourceCommit: COMMIT,
-    registryVersion: '1.0.0',
-    signerCount: 0,
-  });
+  assert.equal(status.nodeRegistrationSource.status, 'CURRENT');
+  assert.equal(status.trustSource.status, 'CURRENT');
 });
 
-test('an authenticated node without a verified handoff remains identity-only', async () => {
+test('a signed node registration without a handoff remains identity-only', async () => {
   const orchestrator = new DomainAccessOrchestrator(
-    loader(),
-    { async read() { return { accountVerified: true, nodeId: NODE_ID, nodeRegistrationVerified: true }; } },
+    signerLoader(),
+    registrationLoader(),
+    loggedInIdentity,
+    validRegistrationSource,
     { async read() { return null; } },
   );
 
@@ -139,14 +203,17 @@ test('an authenticated node without a verified handoff remains identity-only', a
 
   assert.equal(status.stage, 'identity-verified');
   assert.equal(status.runtimeReady, false);
+  assert.equal(status.blockers.includes('verified_node_registration_missing'), false);
   assert.ok(status.blockers.includes('verified_domain_manifest_missing'));
 });
 
-test('a code-channel account without node registration never contacts a domain handoff route', async () => {
+test('a code-channel account cannot supply registration and never contacts a handoff route', async () => {
   let handoffReads = 0;
   const orchestrator = new DomainAccessOrchestrator(
-    loader(),
-    { async read() { return { accountVerified: true, nodeId: NODE_ID, nodeRegistrationVerified: false }; } },
+    signerLoader(),
+    registrationLoader(),
+    loggedInIdentity,
+    { async read() { return null; } },
     { async read() { handoffReads += 1; return validHandoff() as never; } },
   );
 
@@ -157,10 +224,12 @@ test('a code-channel account without node registration never contacts a domain h
   assert.ok(status.blockers.includes('verified_node_registration_missing'));
 });
 
-test('a loaded signer snapshot and verified handoff project runtime-ready', async () => {
+test('current registries, signed node claim and verified handoff project runtime-ready', async () => {
   const orchestrator = new DomainAccessOrchestrator(
-    loader(() => registry([activeSigner()])),
-    { async read() { return { accountVerified: true, nodeId: NODE_ID, nodeRegistrationVerified: true }; } },
+    signerLoader(() => signerRegistry([activeSigner()])),
+    registrationLoader(),
+    loggedInIdentity,
+    validRegistrationSource,
     { async read() {
       return {
         handoff: validHandoff(),
@@ -174,33 +243,38 @@ test('a loaded signer snapshot and verified handoff project runtime-ready', asyn
   assert.equal(status.stage, 'runtime-ready');
   assert.equal(status.runtimeReady, true);
   assert.deepEqual(status.blockers, []);
-  assert.equal(status.trustSource.status, 'CURRENT');
 });
 
-test('source and handoff failures are reduced to safe status without raw details', async () => {
+test('source failures are reduced to safe status without raw details', async () => {
+  const unavailableSigner = new TrustedSignerSnapshotLoader({ async fetchJson() { throw new Error('secret signer detail'); } });
+  const unavailableRegistration = new NodeRegistrationSnapshotLoader({ async fetchJson() { throw new Error('secret registration detail'); } });
   const orchestrator = new DomainAccessOrchestrator(
-    new TrustedSignerSnapshotLoader({ async fetchJson() { throw new Error('secret source detail'); } }),
-    { async read() { return { accountVerified: true, nodeId: NODE_ID, nodeRegistrationVerified: true }; } },
+    unavailableSigner,
+    unavailableRegistration,
+    loggedInIdentity,
+    { async read() { throw new Error('secret claim detail'); } },
     { async read() { throw new Error('secret handoff detail'); } },
   );
 
   const status = await orchestrator.domainAccess(DOMAIN_ID, NODE_TYPE, NOW);
 
-  assert.equal(status.stage, 'identity-verified');
+  assert.equal(status.stage, 'login-required');
   assert.equal(status.runtimeReady, false);
+  assert.equal(status.nodeRegistrationSource.status, 'UNAVAILABLE');
   assert.equal(status.trustSource.status, 'UNAVAILABLE');
-  assert.equal(status.trustSource.reason, 'SOURCE_UNAVAILABLE');
   assert.equal(JSON.stringify(status).includes('secret'), false);
 });
 
-test('a last-known-good signer can project access while preserving degraded health', async () => {
-  let currentRegistry: unknown = registry([activeSigner()]);
-  const signerLoader = loader(() => currentRegistry);
-  await signerLoader.refresh();
-  currentRegistry = { ...registry([activeSigner()]), version: 'invalid' };
+test('a degraded signer may preserve handoff verification while node registration must be current', async () => {
+  let currentSignerRegistry: unknown = signerRegistry([activeSigner()]);
+  const currentSignerLoader = signerLoader(() => currentSignerRegistry);
+  await currentSignerLoader.refresh();
+  currentSignerRegistry = { ...signerRegistry([activeSigner()]), version: 'invalid' };
   const orchestrator = new DomainAccessOrchestrator(
-    signerLoader,
-    { async read() { return { accountVerified: true, nodeId: NODE_ID, nodeRegistrationVerified: true }; } },
+    currentSignerLoader,
+    registrationLoader(),
+    loggedInIdentity,
+    validRegistrationSource,
     { async read() {
       return {
         handoff: validHandoff(),
@@ -210,8 +284,30 @@ test('a last-known-good signer can project access while preserving degraded heal
   );
 
   const status = await orchestrator.domainAccess(DOMAIN_ID, NODE_TYPE, NOW);
-
   assert.equal(status.runtimeReady, true);
   assert.equal(status.trustSource.status, 'DEGRADED_LAST_KNOWN_GOOD');
-  assert.equal(status.trustSource.reason, 'REGISTRY_INVALID');
+  assert.equal(status.nodeRegistrationSource.status, 'CURRENT');
+});
+
+test('a degraded node-registration registry cannot authorize a claim', async () => {
+  let currentNodeRegistry: unknown = nodeRegistry();
+  const currentNodeLoader = registrationLoader(() => currentNodeRegistry);
+  await currentNodeLoader.refresh();
+  currentNodeRegistry = nodeRegistry('2.0.0');
+  let claimReads = 0;
+  let handoffReads = 0;
+  const orchestrator = new DomainAccessOrchestrator(
+    signerLoader(() => signerRegistry([activeSigner()])),
+    currentNodeLoader,
+    loggedInIdentity,
+    { async read() { claimReads += 1; return validRegistrationClaim(); } },
+    { async read() { handoffReads += 1; return null; } },
+  );
+
+  const status = await orchestrator.domainAccess(DOMAIN_ID, NODE_TYPE, NOW);
+  assert.equal(status.nodeRegistrationSource.status, 'DEGRADED_LAST_KNOWN_GOOD');
+  assert.equal(status.runtimeReady, false);
+  assert.ok(status.blockers.includes('verified_node_registration_missing'));
+  assert.equal(claimReads, 0);
+  assert.equal(handoffReads, 0);
 });
diff --git a/product-source/guanghu-knowledge-base/server/domain-access-orchestrator.ts b/product-source/guanghu-knowledge-base/server/domain-access-orchestrator.ts
index 9f45d9b..323ab56 100644
--- a/product-source/guanghu-knowledge-base/server/domain-access-orchestrator.ts
+++ b/product-source/guanghu-knowledge-base/server/domain-access-orchestrator.ts
@@ -9,19 +9,41 @@ import {
   TrustedSignerSnapshotLoader,
   type TrustedSignerSnapshotReceipt,
 } from './trusted-signer-snapshot.js';
+import {
+  resolveNodeRegistrationEndpoint,
+  verifyNodeRegistrationClaim,
+} from './node-registration.js';
+import {
+  assertLoadedNodeRegistrationSnapshot,
+  NodeRegistrationSnapshotLoader,
+  type NodeRegistrationSnapshotReceipt,
+} from './node-registration-snapshot.js';
 
 const IDENTIFIER_PATTERN = /^[A-Z0-9][A-Z0-9._:-]{1,159}$/;
 
 export interface DomainIdentityProjection {
+  accountId: string;
   accountVerified: boolean;
   nodeId: string;
-  nodeRegistrationVerified: boolean;
 }
 
 export interface DomainIdentitySource {
   read(domainId: string, nodeType: DomainNodeType): Promise<DomainIdentityProjection>;
 }
 
+export interface NodeRegistrationClaimRequest {
+  accountId: string;
+  domainId: string;
+  endpointId: string;
+  endpointUrl: string;
+  nodeId: string;
+  nodeType: DomainNodeType;
+}
+
+export interface NodeRegistrationClaimSource {
+  read(request: Readonly<NodeRegistrationClaimRequest>): Promise<unknown | null>;
+}
+
 export interface DomainRuntimeHandoffCandidate {
   handoff: unknown;
   signerLookup: {
@@ -40,6 +62,7 @@ export interface DomainAccessProjection {
   localWorkspaceAllowed: true;
   nodeId: string;
   nodeType: DomainNodeType;
+  nodeRegistrationSource: Readonly<NodeRegistrationSnapshotReceipt>;
   runtimeReady: boolean;
   stage: DomainAccessStatus['stage'];
   trustSource: Readonly<TrustedSignerSnapshotReceipt>;
@@ -47,42 +70,77 @@ export interface DomainAccessProjection {
 
 function safeIdentity(input: unknown): DomainIdentityProjection {
   if (typeof input !== 'object' || input === null || Array.isArray(input)) {
-    return { accountVerified: false, nodeId: '', nodeRegistrationVerified: false };
+    return { accountId: '', accountVerified: false, nodeId: '' };
   }
   const candidate = input as Record<string, unknown>;
+  const accountId = typeof candidate.accountId === 'string'
+    && /^[A-Za-z0-9][A-Za-z0-9._-]{0,79}$/.test(candidate.accountId)
+    ? candidate.accountId
+    : '';
   const nodeId = typeof candidate.nodeId === 'string' && IDENTIFIER_PATTERN.test(candidate.nodeId)
     ? candidate.nodeId
     : '';
   return {
-    accountVerified: candidate.accountVerified === true && Boolean(nodeId),
+    accountId,
+    accountVerified: candidate.accountVerified === true && Boolean(accountId) && Boolean(nodeId),
     nodeId,
-    nodeRegistrationVerified: candidate.nodeRegistrationVerified === true && Boolean(nodeId),
   };
 }
 
 export class DomainAccessOrchestrator {
   constructor(
     private readonly signerSnapshots: TrustedSignerSnapshotLoader,
+    private readonly nodeRegistrationSnapshots: NodeRegistrationSnapshotLoader,
     private readonly identities: DomainIdentitySource,
+    private readonly nodeRegistrations: NodeRegistrationClaimSource,
     private readonly handoffs: DomainRuntimeHandoffSource,
   ) {}
 
   async domainAccess(domainId: string, nodeType: DomainNodeType, now = Date.now()): Promise<Readonly<DomainAccessProjection>> {
     if (!IDENTIFIER_PATTERN.test(domainId)) throw new Error('domain_access_domain_invalid');
     if (nodeType !== 'local-terminal' && nodeType !== 'cloud-resident') throw new Error('domain_access_node_type_invalid');
-    const [snapshot, identity] = await Promise.all([
+    const [snapshot, nodeRegistrationSnapshot, identity] = await Promise.all([
       this.signerSnapshots.refresh(),
+      this.nodeRegistrationSnapshots.refresh(),
       this.identities.read(domainId, nodeType).then(safeIdentity, () => safeIdentity(null)),
     ]);
+    let nodeRegistrationVerified = false;
+    if (identity.accountVerified && nodeRegistrationSnapshot.receipt.status === 'CURRENT') {
+      try {
+        const loaded = assertLoadedNodeRegistrationSnapshot(nodeRegistrationSnapshot);
+        const endpoint = loaded.registry && resolveNodeRegistrationEndpoint(loaded.registry, { domainId, nodeType });
+        if (endpoint) {
+          const claim = await this.nodeRegistrations.read(Object.freeze({
+            accountId: identity.accountId,
+            domainId,
+            endpointId: endpoint.endpointId,
+            endpointUrl: endpoint.url,
+            nodeId: identity.nodeId,
+            nodeType,
+          }));
+          if (claim) {
+            verifyNodeRegistrationClaim(claim, {
+              accountId: identity.accountId,
+              domainId,
+              nodeId: identity.nodeId,
+              nodeType,
+            }, endpoint, now);
+            nodeRegistrationVerified = true;
+          }
+        }
+      } catch {
+        nodeRegistrationVerified = false;
+      }
+    }
     const evidence: DomainAccessEvidence = {
       accountVerified: identity.accountVerified,
       domainId,
       nodeId: identity.nodeId,
-      nodeRegistrationVerified: identity.nodeRegistrationVerified,
+      nodeRegistrationVerified,
       nodeType,
     };
 
-    if (identity.accountVerified && identity.nodeRegistrationVerified) {
+    if (identity.accountVerified && nodeRegistrationVerified) {
       let candidate: DomainRuntimeHandoffCandidate | null = null;
       try {
         candidate = await this.handoffs.read(domainId, identity.nodeId, nodeType);
@@ -111,6 +169,7 @@ export class DomainAccessOrchestrator {
     return Object.freeze({
       ...status,
       blockers: Object.freeze([...status.blockers]),
+      nodeRegistrationSource: nodeRegistrationSnapshot.receipt,
       trustSource: snapshot.receipt,
     });
   }
diff --git a/product-source/guanghu-knowledge-base/server/node-registration-snapshot.test.ts b/product-source/guanghu-knowledge-base/server/node-registration-snapshot.test.ts
new file mode 100644
index 0000000..1760138
--- /dev/null
+++ b/product-source/guanghu-knowledge-base/server/node-registration-snapshot.test.ts
@@ -0,0 +1,111 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { generateKeyPairSync } from 'node:crypto';
+import {
+  assertLoadedNodeRegistrationSnapshot,
+  NodeRegistrationSnapshotLoader,
+} from './node-registration-snapshot.js';
+
+const COMMIT = 'a'.repeat(40);
+const ANCHOR_URL = 'https://guanghulab.com/api/ai/v1/anchor';
+const REGISTRY_URL = `https://guanghulab.com/code/bingshuo/guanghu-ice-heart/raw/commit/${COMMIT}/routing/node-registration-endpoints.json`;
+const { publicKey } = generateKeyPairSync('ed25519');
+
+function anchor(includeMap = true) {
+  return {
+    schema: 'guanghu.public-navigation-anchor/v1',
+    anchor_id: 'GLW-PUBLIC-NAV-ANCHOR-001',
+    state: 'CURRENT_CANONICAL',
+    repository_id: 'REPO-012',
+    branch: 'main',
+    public_entry: ANCHOR_URL,
+    code_entry: 'https://guanghulab.com/code/bingshuo/guanghu-ice-heart',
+    maps: includeMap ? {
+      node_registration_endpoints: {
+        path: 'routing/node-registration-endpoints.json',
+        id: 'GH-AIOS-NODE-REGISTRATION-ENDPOINTS-001',
+        version: '1.0.0',
+      },
+    } : {},
+    navigation_source: {
+      anchor_id: 'GLW-PUBLIC-NAV-ANCHOR-001',
+      source_commit: COMMIT,
+      source_mode: 'REPO-012_MAIN_GIT_SNAPSHOT',
+      source_degraded: false,
+    },
+  };
+}
+
+function registry(version = '1.0.0') {
+  return {
+    endpoints: [{
+      algorithm: 'Ed25519',
+      domainIds: ['DOM-FIFTH-0001'],
+      endpointId: 'GH-NODE-REG-001',
+      nodeTypes: ['local-terminal'],
+      publicKeyPem: publicKey.export({ format: 'pem', type: 'spki' }).toString(),
+      signerId: 'GH-NODE-REG-SIGNER-001',
+      status: 'ACTIVE',
+      url: 'https://guanghulab.com/api/ai/v1/node-registrations/claims',
+    }],
+    registryId: 'GH-AIOS-NODE-REGISTRATION-ENDPOINTS-001',
+    schema: 'gh-aios.node-registration-endpoints/v1',
+    state: 'CURRENT',
+    version,
+  };
+}
+
+function loader(readAnchor: () => unknown, readRegistry: () => unknown) {
+  return new NodeRegistrationSnapshotLoader({
+    async fetchJson(url) {
+      if (url === ANCHOR_URL) return readAnchor();
+      if (url === REGISTRY_URL) return readRegistry();
+      throw new Error('unexpected_url');
+    },
+  });
+}
+
+test('loads one exact registry from the anchor source commit', async () => {
+  const snapshot = await loader(() => anchor(), () => registry()).refresh();
+  assert.equal(snapshot.receipt.status, 'CURRENT');
+  assert.equal(snapshot.receipt.sourceCommit, COMMIT);
+  assert.equal(snapshot.receipt.endpointCount, 1);
+  assert.equal(assertLoadedNodeRegistrationSnapshot(snapshot), snapshot);
+});
+
+test('the current public anchor without a registration map is explicitly unavailable', async () => {
+  const snapshot = await loader(() => anchor(false), () => registry()).refresh();
+  assert.deepEqual(snapshot.receipt, {
+    endpointCount: 0,
+    reason: 'REGISTRY_UNREGISTERED',
+    registryVersion: null,
+    sourceCommit: null,
+    status: 'UNAVAILABLE',
+  });
+  assert.equal(snapshot.registry, null);
+});
+
+test('source and registry mismatches fail closed', async () => {
+  const unavailable = await loader(() => { throw new Error('offline'); }, () => registry()).refresh();
+  assert.equal(unavailable.receipt.reason, 'SOURCE_UNAVAILABLE');
+  const invalid = await loader(() => anchor(), () => registry('2.0.0')).refresh();
+  assert.equal(invalid.receipt.reason, 'REGISTRY_INVALID');
+});
+
+test('last-known-good state is reported degraded and cannot be mistaken for current', async () => {
+  let currentAnchor: unknown = anchor();
+  const snapshotLoader = loader(() => currentAnchor, () => registry());
+  await snapshotLoader.refresh();
+  currentAnchor = anchor(false);
+  const degraded = await snapshotLoader.refresh();
+  assert.equal(degraded.receipt.status, 'DEGRADED_LAST_KNOWN_GOOD');
+  assert.equal(degraded.receipt.reason, 'REGISTRY_UNREGISTERED');
+  assert.equal(degraded.receipt.sourceCommit, COMMIT);
+});
+
+test('caller-created snapshots are rejected', () => {
+  assert.throws(() => assertLoadedNodeRegistrationSnapshot({
+    receipt: { endpointCount: 0, registryVersion: null, sourceCommit: null, status: 'UNAVAILABLE' },
+    registry: null,
+  }), /snapshot_unregistered/);
+});
diff --git a/product-source/guanghu-knowledge-base/server/node-registration-snapshot.ts b/product-source/guanghu-knowledge-base/server/node-registration-snapshot.ts
new file mode 100644
index 0000000..c00f34d
--- /dev/null
+++ b/product-source/guanghu-knowledge-base/server/node-registration-snapshot.ts
@@ -0,0 +1,169 @@
+import {
+  parseNodeRegistrationEndpointRegistry,
+  type NodeRegistrationEndpointRegistry,
+} from './node-registration.js';
+
+const ANCHOR_URL = 'https://guanghulab.com/api/ai/v1/anchor';
+const CODE_URL = 'https://guanghulab.com/code/bingshuo/guanghu-ice-heart';
+const REGISTRY_ID = 'GH-AIOS-NODE-REGISTRATION-ENDPOINTS-001';
+const REGISTRY_PATH = 'routing/node-registration-endpoints.json';
+const COMMIT_PATTERN = /^[a-f0-9]{40}(?:[a-f0-9]{24})?$/;
+const VERSION_PATTERN = /^(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)$/;
+const registeredSnapshots = new WeakSet<object>();
+
+export interface NodeRegistrationSnapshotTransport {
+  fetchJson(url: string): Promise<unknown>;
+}
+
+export type NodeRegistrationSnapshotReason =
+  | 'ANCHOR_INVALID'
+  | 'REGISTRY_INVALID'
+  | 'REGISTRY_UNREGISTERED'
+  | 'SOURCE_UNAVAILABLE';
+
+export interface NodeRegistrationSnapshotReceipt {
+  endpointCount: number;
+  reason?: NodeRegistrationSnapshotReason;
+  registryVersion: string | null;
+  sourceCommit: string | null;
+  status: 'CURRENT' | 'DEGRADED_LAST_KNOWN_GOOD' | 'UNAVAILABLE';
+}
+
+export interface NodeRegistrationSnapshotResult {
+  receipt: Readonly<NodeRegistrationSnapshotReceipt>;
+  registry: NodeRegistrationEndpointRegistry | null;
+}
+
+interface ParsedAnchor {
+  registryVersion: string;
+  sourceCommit: string;
+}
+
+class SnapshotLoadError extends Error {
+  constructor(readonly reason: NodeRegistrationSnapshotReason) {
+    super(reason);
+  }
+}
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === 'object' && value !== null && !Array.isArray(value);
+}
+
+function parseAnchor(input: unknown): ParsedAnchor {
+  if (!isRecord(input)
+    || input.schema !== 'guanghu.public-navigation-anchor/v1'
+    || input.anchor_id !== 'GLW-PUBLIC-NAV-ANCHOR-001'
+    || input.state !== 'CURRENT_CANONICAL'
+    || input.repository_id !== 'REPO-012'
+    || input.branch !== 'main'
+    || input.public_entry !== ANCHOR_URL
+    || input.code_entry !== CODE_URL
+    || !isRecord(input.maps)
+    || !isRecord(input.navigation_source)
+    || input.navigation_source.anchor_id !== 'GLW-PUBLIC-NAV-ANCHOR-001'
+    || input.navigation_source.source_mode !== 'REPO-012_MAIN_GIT_SNAPSHOT'
+    || input.navigation_source.source_degraded !== false
+    || typeof input.navigation_source.source_commit !== 'string'
+    || !COMMIT_PATTERN.test(input.navigation_source.source_commit)) {
+    throw new SnapshotLoadError('ANCHOR_INVALID');
+  }
+  if (!isRecord(input.maps.node_registration_endpoints)) {
+    throw new SnapshotLoadError('REGISTRY_UNREGISTERED');
+  }
+  const map = input.maps.node_registration_endpoints;
+  if (map.path !== REGISTRY_PATH
+    || map.id !== REGISTRY_ID
+    || typeof map.version !== 'string'
+    || !VERSION_PATTERN.test(map.version)) {
+    throw new SnapshotLoadError('ANCHOR_INVALID');
+  }
+  return Object.freeze({
+    registryVersion: map.version,
+    sourceCommit: input.navigation_source.source_commit,
+  });
+}
+
+function registryUrl(sourceCommit: string): string {
+  return `${CODE_URL}/raw/commit/${sourceCommit}/${REGISTRY_PATH}`;
+}
+
+function receipt(
+  status: NodeRegistrationSnapshotReceipt['status'],
+  registry: NodeRegistrationEndpointRegistry | null,
+  reason?: NodeRegistrationSnapshotReason,
+): Readonly<NodeRegistrationSnapshotReceipt> {
+  return Object.freeze({
+    endpointCount: registry?.endpoints.length ?? 0,
+    ...(reason ? { reason } : {}),
+    registryVersion: registry?.version ?? null,
+    sourceCommit: registry?.source.sourceCommit ?? null,
+    status,
+  });
+}
+
+function result(
+  registry: NodeRegistrationEndpointRegistry | null,
+  snapshotReceipt: Readonly<NodeRegistrationSnapshotReceipt>,
+): NodeRegistrationSnapshotResult {
+  const loaded = Object.freeze({ receipt: snapshotReceipt, registry });
+  registeredSnapshots.add(loaded);
+  return loaded;
+}
+
+export function assertLoadedNodeRegistrationSnapshot(
+  snapshot: NodeRegistrationSnapshotResult,
+): NodeRegistrationSnapshotResult {
+  if (!registeredSnapshots.has(snapshot)) throw new Error('node_registration_snapshot_unregistered');
+  return snapshot;
+}
+
+export class NodeRegistrationSnapshotLoader {
+  #inFlight: Promise<NodeRegistrationSnapshotResult> | null = null;
+  #lastKnownGood: NodeRegistrationEndpointRegistry | null = null;
+
+  constructor(private readonly transport: NodeRegistrationSnapshotTransport) {}
+
+  refresh(): Promise<NodeRegistrationSnapshotResult> {
+    if (this.#inFlight) return this.#inFlight;
+    this.#inFlight = this.#load().finally(() => {
+      this.#inFlight = null;
+    });
+    return this.#inFlight;
+  }
+
+  async #load(): Promise<NodeRegistrationSnapshotResult> {
+    try {
+      let rawAnchor: unknown;
+      try {
+        rawAnchor = await this.transport.fetchJson(ANCHOR_URL);
+      } catch {
+        throw new SnapshotLoadError('SOURCE_UNAVAILABLE');
+      }
+      const anchor = parseAnchor(rawAnchor);
+      let rawRegistry: unknown;
+      try {
+        rawRegistry = await this.transport.fetchJson(registryUrl(anchor.sourceCommit));
+      } catch {
+        throw new SnapshotLoadError('SOURCE_UNAVAILABLE');
+      }
+      let registry: NodeRegistrationEndpointRegistry;
+      try {
+        registry = parseNodeRegistrationEndpointRegistry(rawRegistry, {
+          repositoryId: 'REPO-012',
+          sourceCommit: anchor.sourceCommit,
+          sourceUrl: registryUrl(anchor.sourceCommit),
+        });
+      } catch {
+        throw new SnapshotLoadError('REGISTRY_INVALID');
+      }
+      if (registry.version !== anchor.registryVersion) throw new SnapshotLoadError('REGISTRY_INVALID');
+      this.#lastKnownGood = registry;
+      return result(registry, receipt('CURRENT', registry));
+    } catch (error) {
+      const reason = error instanceof SnapshotLoadError ? error.reason : 'SOURCE_UNAVAILABLE';
+      return this.#lastKnownGood
+        ? result(this.#lastKnownGood, receipt('DEGRADED_LAST_KNOWN_GOOD', this.#lastKnownGood, reason))
+        : result(null, receipt('UNAVAILABLE', null, reason));
+    }
+  }
+}
diff --git a/product-source/guanghu-knowledge-base/server/node-registration.test.ts b/product-source/guanghu-knowledge-base/server/node-registration.test.ts
new file mode 100644
index 0000000..4e7dcad
--- /dev/null
+++ b/product-source/guanghu-knowledge-base/server/node-registration.test.ts
@@ -0,0 +1,136 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { generateKeyPairSync, sign } from 'node:crypto';
+import {
+  nodeRegistrationClaimSigningBytes,
+  parseNodeRegistrationEndpointRegistry,
+  resolveNodeRegistrationEndpoint,
+  verifyNodeRegistrationClaim,
+} from './node-registration.js';
+
+const NOW = 1_786_291_200_000;
+const COMMIT = 'a'.repeat(40);
+const { privateKey, publicKey } = generateKeyPairSync('ed25519');
+const source = {
+  repositoryId: 'REPO-012' as const,
+  sourceCommit: COMMIT,
+  sourceUrl: `https://guanghulab.com/code/bingshuo/guanghu-ice-heart/raw/commit/${COMMIT}/routing/node-registration-endpoints.json`,
+};
+
+function endpoint(overrides: Record<string, unknown> = {}) {
+  return {
+    algorithm: 'Ed25519',
+    domainIds: ['DOM-FIFTH-0001'],
+    endpointId: 'GH-NODE-REG-001',
+    nodeTypes: ['local-terminal', 'cloud-resident'],
+    publicKeyPem: publicKey.export({ format: 'pem', type: 'spki' }).toString(),
+    signerId: 'GH-NODE-REG-SIGNER-001',
+    status: 'ACTIVE',
+    url: 'https://guanghulab.com/api/ai/v1/node-registrations/claims',
+    ...overrides,
+  };
+}
+
+function registry(endpoints: unknown[] = [endpoint()]) {
+  return parseNodeRegistrationEndpointRegistry({
+    endpoints,
+    registryId: 'GH-AIOS-NODE-REGISTRATION-ENDPOINTS-001',
+    schema: 'gh-aios.node-registration-endpoints/v1',
+    state: 'CURRENT',
+    version: '1.0.0',
+  }, source);
+}
+
+function signedClaim(overrides: Record<string, unknown> = {}) {
+  const payload = {
+    accountId: 'bingshuo',
+    claimId: 'NODE-CLAIM-001',
+    domainId: 'DOM-FIFTH-0001',
+    endpointId: 'GH-NODE-REG-001',
+    expiresAt: NOW + 60_000,
+    issuedAt: NOW - 1_000,
+    nodeId: 'JD-FD-PRIMARY',
+    nodeKeyFingerprint: 'b'.repeat(64),
+    nodeType: 'local-terminal' as const,
+    schema: 'gh-aios.node-registration-claim/v1' as const,
+    signerId: 'GH-NODE-REG-SIGNER-001',
+    ...overrides,
+  };
+  return {
+    ...payload,
+    signature: sign(null, nodeRegistrationClaimSigningBytes(payload as never), privateKey).toString('base64'),
+  };
+}
+
+test('resolves one active endpoint for a domain and node type', () => {
+  const resolved = resolveNodeRegistrationEndpoint(registry(), {
+    domainId: 'DOM-FIFTH-0001',
+    nodeType: 'local-terminal',
+  });
+  assert.equal(resolved?.endpointId, 'GH-NODE-REG-001');
+});
+
+test('rejects credentials, arbitrary origins and ambiguous active scopes', () => {
+  assert.throws(() => registry([endpoint({ url: 'https://user:secret@guanghulab.com/api/ai/v1/node-registrations' })]), /registry_invalid/);
+  assert.throws(() => registry([endpoint({ url: 'https://example.com/api/ai/v1/node-registrations' })]), /registry_invalid/);
+  assert.throws(() => registry([
+    endpoint(),
+    endpoint({ endpointId: 'GH-NODE-REG-002', signerId: 'GH-NODE-REG-SIGNER-002' }),
+  ]), /registry_invalid/);
+});
+
+test('a signed registration binds account, domain, node, type, key and endpoint', () => {
+  const resolved = resolveNodeRegistrationEndpoint(registry(), {
+    domainId: 'DOM-FIFTH-0001',
+    nodeType: 'local-terminal',
+  });
+  assert.ok(resolved);
+  const verified = verifyNodeRegistrationClaim(signedClaim(), {
+    accountId: 'bingshuo',
+    domainId: 'DOM-FIFTH-0001',
+    nodeId: 'JD-FD-PRIMARY',
+    nodeType: 'local-terminal',
+  }, resolved, NOW);
+  assert.equal(verified.nodeKeyFingerprint, 'b'.repeat(64));
+  assert.equal(verified.verifiedAt, NOW);
+});
+
+test('copied booleans, unknown fields, mismatches and expired claims fail closed', () => {
+  const resolved = resolveNodeRegistrationEndpoint(registry(), {
+    domainId: 'DOM-FIFTH-0001',
+    nodeType: 'local-terminal',
+  });
+  assert.ok(resolved);
+  const expected = {
+    accountId: 'bingshuo',
+    domainId: 'DOM-FIFTH-0001',
+    nodeId: 'JD-FD-PRIMARY',
+    nodeType: 'local-terminal' as const,
+  };
+  assert.throws(() => verifyNodeRegistrationClaim({ ...signedClaim(), verified: true }, expected, resolved, NOW), /claim_invalid/);
+  assert.throws(() => verifyNodeRegistrationClaim(signedClaim(), { ...expected, accountId: 'other' }, resolved, NOW), /claim_invalid/);
+  assert.throws(() => verifyNodeRegistrationClaim(signedClaim(), { ...expected, nodeType: 'cloud-resident' }, resolved, NOW), /claim_invalid/);
+  assert.throws(() => verifyNodeRegistrationClaim(signedClaim({ expiresAt: NOW }), expected, resolved, NOW), /claim_invalid/);
+});
+
+test('tampering or signing with another key fails closed', () => {
+  const resolved = resolveNodeRegistrationEndpoint(registry(), {
+    domainId: 'DOM-FIFTH-0001',
+    nodeType: 'local-terminal',
+  });
+  assert.ok(resolved);
+  const expected = {
+    accountId: 'bingshuo',
+    domainId: 'DOM-FIFTH-0001',
+    nodeId: 'JD-FD-PRIMARY',
+    nodeType: 'local-terminal' as const,
+  };
+  assert.throws(() => verifyNodeRegistrationClaim({ ...signedClaim(), nodeKeyFingerprint: 'c'.repeat(64) }, expected, resolved, NOW), /claim_invalid/);
+  const other = generateKeyPairSync('ed25519');
+  const claim = signedClaim();
+  const forged = {
+    ...claim,
+    signature: sign(null, nodeRegistrationClaimSigningBytes(claim), other.privateKey).toString('base64'),
+  };
+  assert.throws(() => verifyNodeRegistrationClaim(forged, expected, resolved, NOW), /claim_invalid/);
+});
diff --git a/product-source/guanghu-knowledge-base/server/node-registration.ts b/product-source/guanghu-knowledge-base/server/node-registration.ts
new file mode 100644
index 0000000..97f5754
--- /dev/null
+++ b/product-source/guanghu-knowledge-base/server/node-registration.ts
@@ -0,0 +1,269 @@
+import { createPublicKey, verify as verifySignature } from 'node:crypto';
+import type { DomainNodeType } from './domain-access.js';
+
+const REGISTRY_SCHEMA = 'gh-aios.node-registration-endpoints/v1' as const;
+const CLAIM_SCHEMA = 'gh-aios.node-registration-claim/v1' as const;
+const IDENTIFIER_PATTERN = /^[A-Z0-9][A-Z0-9._:-]{1,159}$/;
+const ACCOUNT_ID_PATTERN = /^[A-Za-z0-9][A-Za-z0-9._-]{0,79}$/;
+const COMMIT_PATTERN = /^[a-f0-9]{40}(?:[a-f0-9]{24})?$/;
+const VERSION_PATTERN = /^(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)$/;
+const SHA256_PATTERN = /^[a-f0-9]{64}$/;
+const MAX_CLAIM_LIFETIME_MS = 24 * 60 * 60 * 1000;
+const MAX_CLOCK_SKEW_MS = 5 * 60 * 1000;
+const registeredEndpoints = new WeakSet<object>();
+
+export interface NodeRegistrationEndpoint {
+  algorithm: 'Ed25519';
+  domainIds: readonly string[];
+  endpointId: string;
+  nodeTypes: readonly DomainNodeType[];
+  publicKeyPem: string;
+  signerId: string;
+  status: 'ACTIVE' | 'REVOKED';
+  url: string;
+}
+
+export interface NodeRegistrationEndpointRegistrySource {
+  repositoryId: 'REPO-012';
+  sourceCommit: string;
+  sourceUrl: string;
+}
+
+export interface NodeRegistrationEndpointRegistry {
+  endpoints: readonly NodeRegistrationEndpoint[];
+  registryId: 'GH-AIOS-NODE-REGISTRATION-ENDPOINTS-001';
+  schema: typeof REGISTRY_SCHEMA;
+  source: Readonly<NodeRegistrationEndpointRegistrySource>;
+  state: 'CURRENT';
+  version: string;
+}
+
+export interface NodeRegistrationClaimPayload {
+  accountId: string;
+  claimId: string;
+  domainId: string;
+  endpointId: string;
+  expiresAt: number;
+  issuedAt: number;
+  nodeId: string;
+  nodeKeyFingerprint: string;
+  nodeType: DomainNodeType;
+  schema: typeof CLAIM_SCHEMA;
+  signerId: string;
+}
+
+export interface VerifiedNodeRegistration extends NodeRegistrationClaimPayload {
+  signature: string;
+  verifiedAt: number;
+}
+
+export interface NodeRegistrationLookup {
+  domainId: string;
+  nodeType: DomainNodeType;
+}
+
+function invalidRegistry(): never {
+  throw new Error('node_registration_endpoint_registry_invalid');
+}
+
+function invalidClaim(): never {
+  throw new Error('node_registration_claim_invalid');
+}
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === 'object' && value !== null && !Array.isArray(value);
+}
+
+function hasExactKeys(record: Record<string, unknown>, keys: string[]): boolean {
+  const expected = [...keys].sort();
+  const actual = Object.keys(record).sort();
+  return actual.length === expected.length && actual.every((key, index) => key === expected[index]);
+}
+
+function isIdentifier(value: unknown): value is string {
+  return typeof value === 'string' && IDENTIFIER_PATTERN.test(value);
+}
+
+function parsePublicKey(value: unknown): string {
+  if (typeof value !== 'string'
+    || value.length > 4096
+    || value.includes('PRIVATE KEY')
+    || !value.startsWith('-----BEGIN PUBLIC KEY-----\n')
+    || !value.endsWith('-----END PUBLIC KEY-----\n')) invalidRegistry();
+  try {
+    const key = createPublicKey({ format: 'pem', key: value });
+    if (key.asymmetricKeyType !== 'ed25519') invalidRegistry();
+  } catch {
+    invalidRegistry();
+  }
+  return value;
+}
+
+function parseEndpointUrl(value: unknown): string {
+  if (typeof value !== 'string') invalidRegistry();
+  let url: URL;
+  try {
+    url = new URL(value);
+  } catch {
+    invalidRegistry();
+  }
+  if (url.protocol !== 'https:'
+    || url.hostname !== 'guanghulab.com'
+    || url.port
+    || url.username
+    || url.password
+    || url.search
+    || url.hash
+    || !url.pathname.startsWith('/api/ai/v1/')) invalidRegistry();
+  return url.toString();
+}
+
+function parseEndpoint(input: unknown): NodeRegistrationEndpoint {
+  if (!isRecord(input)
+    || !hasExactKeys(input, ['algorithm', 'domainIds', 'endpointId', 'nodeTypes', 'publicKeyPem', 'signerId', 'status', 'url'])
+    || input.algorithm !== 'Ed25519'
+    || !isIdentifier(input.endpointId)
+    || !isIdentifier(input.signerId)
+    || (input.status !== 'ACTIVE' && input.status !== 'REVOKED')
+    || !Array.isArray(input.domainIds)
+    || input.domainIds.length === 0
+    || input.domainIds.some(domainId => !isIdentifier(domainId))
+    || new Set(input.domainIds).size !== input.domainIds.length
+    || !Array.isArray(input.nodeTypes)
+    || input.nodeTypes.length === 0
+    || input.nodeTypes.some(nodeType => nodeType !== 'local-terminal' && nodeType !== 'cloud-resident')
+    || new Set(input.nodeTypes).size !== input.nodeTypes.length) invalidRegistry();
+  const endpoint = Object.freeze({
+    algorithm: 'Ed25519' as const,
+    domainIds: Object.freeze([...input.domainIds] as string[]),
+    endpointId: input.endpointId,
+    nodeTypes: Object.freeze([...input.nodeTypes] as DomainNodeType[]),
+    publicKeyPem: parsePublicKey(input.publicKeyPem),
+    signerId: input.signerId,
+    status: input.status,
+    url: parseEndpointUrl(input.url),
+  });
+  registeredEndpoints.add(endpoint);
+  return endpoint;
+}
+
+function parseSource(source: NodeRegistrationEndpointRegistrySource): Readonly<NodeRegistrationEndpointRegistrySource> {
+  if (!isRecord(source)
+    || !hasExactKeys(source, ['repositoryId', 'sourceCommit', 'sourceUrl'])
+    || source.repositoryId !== 'REPO-012'
+    || typeof source.sourceCommit !== 'string'
+    || !COMMIT_PATTERN.test(source.sourceCommit)) invalidRegistry();
+  const expected = `https://guanghulab.com/code/bingshuo/guanghu-ice-heart/raw/commit/${source.sourceCommit}/routing/node-registration-endpoints.json`;
+  if (source.sourceUrl !== expected) invalidRegistry();
+  return Object.freeze({ ...source });
+}
+
+export function parseNodeRegistrationEndpointRegistry(
+  input: unknown,
+  source: NodeRegistrationEndpointRegistrySource,
+): NodeRegistrationEndpointRegistry {
+  if (!isRecord(input)
+    || !hasExactKeys(input, ['endpoints', 'registryId', 'schema', 'state', 'version'])
+    || input.registryId !== 'GH-AIOS-NODE-REGISTRATION-ENDPOINTS-001'
+    || input.schema !== REGISTRY_SCHEMA
+    || input.state !== 'CURRENT'
+    || typeof input.version !== 'string'
+    || !VERSION_PATTERN.test(input.version)
+    || !Array.isArray(input.endpoints)) invalidRegistry();
+  const endpoints = input.endpoints.map(parseEndpoint);
+  if (new Set(endpoints.map(endpoint => endpoint.endpointId)).size !== endpoints.length) invalidRegistry();
+  const activeScopes = new Set<string>();
+  for (const endpoint of endpoints.filter(candidate => candidate.status === 'ACTIVE')) {
+    for (const domainId of endpoint.domainIds) {
+      for (const nodeType of endpoint.nodeTypes) {
+        const scope = `${domainId}\0${nodeType}`;
+        if (activeScopes.has(scope)) invalidRegistry();
+        activeScopes.add(scope);
+      }
+    }
+  }
+  return Object.freeze({
+    endpoints: Object.freeze(endpoints),
+    registryId: input.registryId,
+    schema: input.schema,
+    source: parseSource(source),
+    state: input.state,
+    version: input.version,
+  });
+}
+
+export function resolveNodeRegistrationEndpoint(
+  registry: NodeRegistrationEndpointRegistry,
+  lookup: NodeRegistrationLookup,
+): NodeRegistrationEndpoint | null {
+  const endpoint = registry.endpoints.find(candidate => candidate.status === 'ACTIVE'
+    && candidate.domainIds.includes(lookup.domainId)
+    && candidate.nodeTypes.includes(lookup.nodeType));
+  if (!endpoint) return null;
+  if (!registeredEndpoints.has(endpoint)) throw new Error('node_registration_endpoint_unregistered');
+  return endpoint;
+}
+
+export function nodeRegistrationClaimSigningBytes(payload: NodeRegistrationClaimPayload): Buffer {
+  return Buffer.from(JSON.stringify({
+    accountId: payload.accountId,
+    claimId: payload.claimId,
+    domainId: payload.domainId,
+    endpointId: payload.endpointId,
+    expiresAt: payload.expiresAt,
+    issuedAt: payload.issuedAt,
+    nodeId: payload.nodeId,
+    nodeKeyFingerprint: payload.nodeKeyFingerprint,
+    nodeType: payload.nodeType,
+    schema: payload.schema,
+    signerId: payload.signerId,
+  }), 'utf8');
+}
+
+export function verifyNodeRegistrationClaim(
+  input: unknown,
+  expected: Readonly<{ accountId: string; domainId: string; nodeId: string; nodeType: DomainNodeType }>,
+  endpoint: NodeRegistrationEndpoint,
+  now = Date.now(),
+): Readonly<VerifiedNodeRegistration> {
+  if (!registeredEndpoints.has(endpoint) || endpoint.status !== 'ACTIVE') invalidClaim();
+  if (!isRecord(input)
+    || !hasExactKeys(input, ['accountId', 'claimId', 'domainId', 'endpointId', 'expiresAt', 'issuedAt', 'nodeId', 'nodeKeyFingerprint', 'nodeType', 'schema', 'signature', 'signerId'])) invalidClaim();
+  if (input.schema !== CLAIM_SCHEMA
+    || typeof input.accountId !== 'string'
+    || !ACCOUNT_ID_PATTERN.test(input.accountId)
+    || input.accountId !== expected.accountId
+    || !isIdentifier(input.claimId)
+    || input.domainId !== expected.domainId
+    || input.nodeId !== expected.nodeId
+    || input.nodeType !== expected.nodeType
+    || input.endpointId !== endpoint.endpointId
+    || input.signerId !== endpoint.signerId
+    || !endpoint.domainIds.includes(expected.domainId)
+    || !endpoint.nodeTypes.includes(expected.nodeType)
+    || typeof input.nodeKeyFingerprint !== 'string'
+    || !SHA256_PATTERN.test(input.nodeKeyFingerprint)
+    || typeof input.issuedAt !== 'number'
+    || !Number.isSafeInteger(input.issuedAt)
+    || typeof input.expiresAt !== 'number'
+    || !Number.isSafeInteger(input.expiresAt)
+    || input.issuedAt > now + MAX_CLOCK_SKEW_MS
+    || input.expiresAt <= now
+    || input.expiresAt <= input.issuedAt
+    || input.expiresAt - input.issuedAt > MAX_CLAIM_LIFETIME_MS
+    || typeof input.signature !== 'string') invalidClaim();
+  const payload = input as unknown as NodeRegistrationClaimPayload;
+  let signature: Buffer;
+  try {
+    signature = Buffer.from(input.signature, 'base64');
+    if (signature.length !== 64 || signature.toString('base64') !== input.signature) invalidClaim();
+    if (!verifySignature(null, nodeRegistrationClaimSigningBytes(payload), endpoint.publicKeyPem, signature)) invalidClaim();
+  } catch {
+    invalidClaim();
+  }
+  return Object.freeze({
+    ...payload,
+    signature: input.signature,
+    verifiedAt: now,
+  });
+}
diff --git a/product-source/hololake-desktop/electron/main.ts b/product-source/hololake-desktop/electron/main.ts
index f88cfba..22216ce 100644
--- a/product-source/hololake-desktop/electron/main.ts
+++ b/product-source/hololake-desktop/electron/main.ts
@@ -20,6 +20,7 @@ import fs from 'fs';
 import { importKnowledgeFolder } from './folder-import.js';
 import { DomainAccessOrchestrator } from '../../guanghu-knowledge-base/server/domain-access-orchestrator.js';
 import { TrustedSignerSnapshotLoader } from '../../guanghu-knowledge-base/server/trusted-signer-snapshot.js';
+import { NodeRegistrationSnapshotLoader } from '../../guanghu-knowledge-base/server/node-registration-snapshot.js';
 
 // ─── 配置 ───
 
@@ -324,22 +325,45 @@ const trustedSignerSnapshots = new TrustedSignerSnapshotLoader({
   },
 });
 
+const nodeRegistrationSnapshots = new NodeRegistrationSnapshotLoader({
+  async fetchJson(url: string): Promise<unknown> {
+    const response = await fetch(url, {
+      headers: { Accept: 'application/json' },
+      signal: AbortSignal.timeout(5000),
+    });
+    if (!response.ok) throw new Error(`node_registration_source_http_${response.status}`);
+    return response.json();
+  },
+});
+
 const domainAccessOrchestrator = new DomainAccessOrchestrator(
   trustedSignerSnapshots,
+  nodeRegistrationSnapshots,
   {
     async read() {
       const stored = applyStoredServerAuth();
-      if (!stored) return { accountVerified: false, nodeId: '', nodeRegistrationVerified: false };
+      if (!stored) return { accountId: '', accountVerified: false, nodeId: '' };
       try {
-        const { response } = await forgejoRequest(stored.nodeId, '/api/v1/user', {}, { token: stored.token });
-        // Forgejo proves only the account part. A dedicated node-registration
-        // verifier must independently supply nodeRegistrationVerified.
-        return { accountVerified: response.ok, nodeId: stored.nodeId, nodeRegistrationVerified: false };
+        const { response, data } = await forgejoRequest(stored.nodeId, '/api/v1/user', {}, { token: stored.token });
+        // Forgejo proves only the account part. It cannot submit a node-registration
+        // boolean; a separately anchored signed claim is required below.
+        return {
+          accountId: response.ok && typeof data?.login === 'string' ? data.login : '',
+          accountVerified: response.ok,
+          nodeId: stored.nodeId,
+        };
       } catch {
-        return { accountVerified: false, nodeId: stored.nodeId, nodeRegistrationVerified: false };
+        return { accountId: '', accountVerified: false, nodeId: stored.nodeId };
       }
     },
   },
+  {
+    async read() {
+      // Current REPO-012 does not yet register a node-registration endpoint.
+      // Keep this transport absent until that public registry and service exist.
+      return null;
+    },
+  },
   {
     async read() {
       // 当前灯塔尚未发布签名运行体交接端点。保持关闭，不从账号身份推导运行体权限。
diff --git a/product-source/hololake-platform/architecture/HOLOLAKE-NODE-REGISTRATION-CONTRACT-20260810.md b/product-source/hololake-platform/architecture/HOLOLAKE-NODE-REGISTRATION-CONTRACT-20260810.md
new file mode 100644
index 0000000..e14bd4b
--- /dev/null
+++ b/product-source/hololake-platform/architecture/HOLOLAKE-NODE-REGISTRATION-CONTRACT-20260810.md
@@ -0,0 +1,46 @@
+# HoloLake 节点登记与验证来源契约 · 2026-08-10
+
+> 阶段：`DEV-20260809-007 / NODE-REGISTRATION-CONTRACT-001`
+>
+> 上游：`HLP-CURRENT-ARCH-001` 第 5 节“节点与登录协议”
+>
+> 状态：`IMPLEMENTATION_STAGE_ACCEPTANCE_BASELINE`
+
+## 验收标准
+
+1. 账号验证源只能返回账号身份与用户选择的节点编号，不能直接声明节点已经登记。
+2. HoloLake 只读取 REPO-012 当前公共锚点同一提交声明的
+   `GH-AIOS-NODE-REGISTRATION-ENDPOINTS-001`；任意本地配置、账号响应或未登记 URL 都不能成为
+   节点登记权威。
+3. 节点登记声明使用 Ed25519 签名，并精确绑定账号、域、节点编号、节点类型、节点公钥
+   SHA-256 指纹、登记端点、签发者、签发时间与过期时间。
+4. 注册表缺失、来源降级、端点撤销、端点范围不匹配、声明过期、未知字段、签名错误或任一
+   绑定字段不匹配时，`nodeRegistrationVerified` 必须保持 `false`，且不得请求域运行体交接。
+5. 当前 REPO-012 锚点尚未登记此端点注册表，因此当前生产判断必须是
+   `NODE_REGISTRATION_NOT_EXISTS_0`；本阶段代码完成不得冒充生产登记服务、节点密钥证明、
+   域会话或在线运行已经存在。
+
+## 注册表契约
+
+注册表固定路径为 `routing/node-registration-endpoints.json`，由公共锚点的
+`maps.node_registration_endpoints` 指向。每个端点声明：
+
+- `endpointId`、`signerId`、`Ed25519 publicKeyPem`；
+- HTTPS `guanghulab.com/api/ai/v1/...` 端点；
+- 允许的 `domainIds` 与 `local-terminal / cloud-resident` 节点类型；
+- `ACTIVE / REVOKED` 状态。
+
+同一域与节点类型不得存在两个活跃端点，避免客户端自行猜测权威。
+
+## 登记声明契约
+
+`gh-aios.node-registration-claim/v1` 只表达灯塔登记服务已经验证的账号—节点—公钥绑定。
+声明最长有效 24 小时，必须周期刷新。它不代替后续登录挑战中的实时节点私钥持有证明，也不
+代替域成员权限、短期会话能力、签名域清单和在线连接回执。
+
+## 当前现实边界
+
+- 当前公共锚点没有 `maps.node_registration_endpoints`；
+- 当前桌面没有可调用的登记声明端点；
+- 当前没有生产节点登记签发公钥、登记声明或节点密钥挑战回执；
+- 因而 Forgejo 账号验证以后仍停留在“需要节点登记”，这是正确的失败关闭结果。
diff --git a/product-source/hololake-platform/architecture/README.md b/product-source/hololake-platform/architecture/README.md
index c04839e..f4f6066 100644
--- a/product-source/hololake-platform/architecture/README.md
+++ b/product-source/hololake-platform/architecture/README.md
@@ -8,6 +8,7 @@
 - [`HOLOLAKE-INTENT-REASONING-MAP-20260809.md`](HOLOLAKE-INTENT-REASONING-MAP-20260809.md)：当前产品意图、纠正、思维推理与因果链。
 - [`HOLOLAKE-SYSTEM-ARCHITECTURE-20260809.md`](HOLOLAKE-SYSTEM-ARCHITECTURE-20260809.md)：`HLP-CURRENT-ARCH-001` 当前完整系统蓝图，覆盖 GH-AIOS 灯塔、五域独立入口、光湖本源域、节点登录与光湖桥。
 - [`HOLOLAKE-DESKTOP-0.8.0-CURRENT-CAPABILITY-GAP-20260809.md`](HOLOLAKE-DESKTOP-0.8.0-CURRENT-CAPABILITY-GAP-20260809.md)：桌面 0.8.0 已观察能力与最终规划的逐项差距；同时登记线上产品源码仍为 0.4.6 的分叉事实。
+- [`HOLOLAKE-NODE-REGISTRATION-CONTRACT-20260810.md`](HOLOLAKE-NODE-REGISTRATION-CONTRACT-20260810.md)：账号验证与节点登记分离后的签名声明、端点注册表、失败关闭和当前生产缺口验收基线。
 - [`HOLOLAKE-LANGUAGE-PERSONA-OS.md`](HOLOLAKE-LANGUAGE-PERSONA-OS.md)：HoloLake 作为 AI 语言人格驱动操作系统的当前正式产品定位、操作系统映射、原生应用边界与实现缺口。
 - [`HOLOLAKE-INTENT-REASONING-MAP-20260807.md`](HOLOLAKE-INTENT-REASONING-MAP-20260807.md)：2026-08-07 历史意图层，继续保存形成过程；不再作为当前默认入口。