- Add dht_did field to IdentityRecord (optional, serde-compatible) - Add prefer_dht_did param to identity.issue-credential RPC - When true and dht_did is set, uses did:dht as VC issuer - Credential system already format-agnostic for any DID type Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>