- What we keep
- Keyed subject references, public proofs, credential status, agent activity and trust state, re-attestation schedules, and encrypted values needed for pending issuance, cached proofs, proxy values or protected sessions. Issued credential claim values are not stored as a full issued credential.
- Storage form
- Keyed HMAC-SHA-256 under a server-held pepper
- Encrypted values that an authorized operation can read again
- Public keys, signatures and non-secret cryptographic records
- Structured metadata, counts and operational records
- Retention
- Use is bounded by the artifact’s expiry and revocation state. Physical retention varies by artifact and removal path; encrypted pending values and historical proof metadata do not all share the event-log expiry.