What Happens If Regulatory Evidence Is Modified?

Original Evidence

Source: FDA MedWatch

Retrieved: 2025-10-10T20:22:58Z

Stored hash (ingested):f8fff8d36edfa0fcf239e1207fc871030c96347d2539e02d1524d9545192824f

Status: ✓ VERIFIED

Download audit bundle →

Tampering Attempt

Action: Raw document modified after ingestion

Verification run: 2025-12-21T18:15:42Z

Computed hash (current):3a7c9e2d1f4b8a6c5e9d7f2a4b6c8e1d3f5a7b9c2e4d6f8a1c3e5b7d9f2a4c6

Expected outcome: Integrity violation

Verification Failure

Status: ✖ HASH MISMATCH (Audit chain compromised)

Integrity check failed.
Stored hash:   f8fff8d36edfa0fcf239e1207fc871030c96347d2539e02d1524d9545192824f
Computed hash: 3a7c9e2d1f4b8a6c5e9d7f2a4b6c8e1d3f5a7b9c2e4d6f8a1c3e5b7d9f2a4c6
Audit chain: compromised

Verify Locally

# Download and verify locally
curl -O https://api.compliancebrief.health/api/updates/1/audit-proof
unzip fda-medwatch-audit-proof-2025-12-19.zip
sha256sum raw-document.html
cat hash.txt

This failure is intentional and required to maintain audit integrity.

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