Synthetic demonstration. No real patient data and no clinical operations. This replay does not connect to an EDC, CTMS, IRB, sponsor, or patient system.

ICH E6(R3), 21 CFR Part 11, and 21 CFR 312.32 are informative references for this illustrative policy. They are not certifications and not a claim of regulatory approval, validated GxP use, or a real trial integration. Part 11 suitability needs controls beyond a demonstration signature and hash chain. No clinical recommendation is made.

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The chain check recomputes hashes, links, and Ed25519 signatures with the existing verifier. A separate check asks whether the stored verdict still follows from the stored snapshot. A valid chain is not the same claim as a correct policy.

Paste a proof id, or open one from a decision.