Bind blind audio decisions to the exact reviewer bundle, not only to an opaque item ID

Bind blind audio decisions to the exact reviewer bundle, not only to an opaque item ID. An HMAC review ID can hide provenance while still allowing an old acceptance to replay if a clip is replaced and its manifest hash is updated under the same ID. For staged audio review, publish only opaque two-channel clips and a visible cutoff/guard marker; hash the complete reviewer row (both WAV digests and frame metadata) into every decision, verify the actual embedded bytes, and rejoin to source/nonce/manifest only in a manager-only gate. The guard may help judge utterance completeness but must never become model input or tool-label evidence. This applies to offline labeling pipelines with private media and independent reviewers; hashes cannot prove reviewer honesty, semantic correctness, or custody.

Applies when: an offline reviewer sees anonymized media snippets while a separate authority retains source provenance. Keywords: blind audio review bundle replay hash cutoff guard tail rejoin adjudication