How to Verify a ChainOfFact Evidence Bundle

ChainOfFact evidence bundles are designed to be verified independently. No account, API access, or trust in ChainOfFact is required.

What You Need

  • The ZIP archive you received
  • Any standard SHA-256 hashing tool

Verification Steps

  1. 1Extract the ZIP archive
  2. 2Locate hashes.json
  3. 3Compute the SHA-256 hash of events.json
  4. 4Compare your result to the value in hashes.json
  5. 5Repeat for chain_state.json

Understanding Results

MATCH — Records are intact and consistent
MISMATCH — Tampering detected
ABSTAIN — Continuity broken or incomplete
UNKNOWN — No evidence recorded

Important Limitations

  • No compliance or safety guarantees are made
  • No interpretation or judgment is provided
  • Absence of data is preserved explicitly

ChainOfFact records facts only. Interpretation is the responsibility of the reviewing party.

Command Line Examples

macOS / Linux:

shasum -a 256 events.json

Windows:

certutil -hashfile events.json SHA256
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