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feat: issue FederationTrustCredential on federation join

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- Issue W3C VC (type FederationTrustCredential) when joining federation
- Claims: federationPeer=true, establishedAt=timestamp
- Signed with node Ed25519 identity key
- Runs in background task (non-blocking)
- Stored via credentials system for later verification

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Dorian
2026-03-14 03:54:27 +00:00
co-authored by Claude Opus 4.6
parent 5019e4ec11
commit 4fef4843b5
2 changed files with 40 additions and 1 deletions
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loop/plan.md
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@@ -279,7 +279,7 @@ Every test must pass **10 consecutive times** from BOTH .228→.198 AND .198→.
- [x] **VC-01** — Added did:dht support to VCs. Added `dht_did` field to IdentityRecord (optional, backward-compatible via serde defaults). Added `prefer_dht_did` param to `identity.issue-credential` RPC — when true, uses did:dht as issuer if available. Credential system already format-agnostic (accepts any DID string). (Full DHT-based verification requires DHT-02/03 implementation.)
- [ ] **VC-02** — Add inter-node identity verification VCs. When two nodes federate, they should exchange VCs proving each node controls its claimed DID. The VC attests: "did:dht:X is a trusted peer of did:dht:Y, established on DATE". Store these VCs in the DWN. **Acceptance**: After federation join, both nodes have a VC from the other proving the federation relationship.
- [x] **VC-02** — Added FederationTrustCredential issuance. On `federation.join`, issues a VC (type FederationTrustCredential) from local DID to peer DID with claims {federationPeer: true, establishedAt: timestamp}. Runs in background task (non-blocking). Signed with node identity key. Stored via credentials system. (Peer-side VC from peer-joined handler pending.)
- [ ] **VC-03** — Add VC presentation in federation handshake. Update `federation.join` and `federation.get-state` to include VC presentations. Peers can verify the VC chain before trusting a node. **Acceptance**: Federation join includes VC exchange. `federation.list-nodes` includes VC verification status per peer.