Event chain

Each event includes sequence, previousEventHash, eventHash. A consumer can detect missing or reordered events. Events reference canonical state — they do not compute independent tier or lifecycle results.

Event types

evidence.bound, determination.computed, reliance_receipt.issued, reliance_receipt.acknowledged, trust_subscription.created, webhook.attempted, webhook.delivered, webhook.failed. Note: credential.issued and registry.published events do not exist while authority_state=NOT_AUTHORIZED.

Authority state in events

Event payloads carry the authority_state at the time of the event. All current events reflect issuance_authorized=false and authority_state=NOT_AUTHORIZED. Do not infer credential issuance from the presence of a determination event.

Replay

Manual replay (via MCP ack_reliance_receipt or webhook retry) emits a new delivery attempt, not a rewritten historical event. compare_current can detect whether the trust state has changed since a receipt was issued.