- 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>