Record an AI decision to the audit ledger. Stores model version, hashed inputs, structured output, and human-review flag. The record is immutably sealed in S3 Object Lock for 7 years and queryable for the lifetime of the decision. Use this immediately after any AI decision that may need to be audited later — credit, hiring, fraud, customer routing, content moderation.

Verify a recorded AI decision has not been altered since it was written. The ledger fetches the queryable copy (DynamoDB) and the immutable copy (S3 Object Lock COMPLIANCE mode) independently and compares them. Returns integrity_verified=true if they match. Use this to satisfy a regulator request or to prove an audit trail to a compliance team.

List recorded AI decisions for the calling tenant within a time window. Returns newest first. The read key scopes the result to the caller's tenant — cross-tenant reads require an admin read key. Use this for compliance review, audit prep, or agent self-inspection of recent activity.