Covered quality events are recorded in a per-organization, hash-chained audit trail. The verifier checks the hashed content and links of stored audit rows and identifies a mismatch when a check fails. Implemented scope: Attributed human, system and AI events within the supported event inventory Per-organization hash-chain verification Audit-history views and supported exports Verification establishes internal consistency at the time of the check. It does not prove that every possible action was recorded, or establish completeness against a privileged wholesale rewrite or tail deletion without an external anchor. This is tamper-evidence, not a compliance certification. Verification and its limits: https://docs.elevatedsignals.ai/invariant/compliance/audit-trail-tamper-evidence September 11, 2026 — Open a supported affected record directly from its audit event. Deleted, unavailable or unsupported records may not have a link; existing access restrictions still apply. Guide: https://docs.elevatedsignals.ai/invariant/compliance/audit-trail-tamper-evidence