Keep Digital Human

Integrity chain

Every day, we generate a single SHA-256 hash of all that day's registrations, chained to the previous day's digest. If anyone tampered with any historical record, the chain would break from that point forward. This is a public, verifiable audit trail.

How it works

  1. 1.All registration hashes from the day are sorted and concatenated with the previous day's digest.
  2. 2.The combined string is SHA-256 hashed to produce a single digest.
  3. 3.Because each digest includes the previous one, altering any day's records would change every subsequent digest.
  4. 4.Anyone can verify the chain via the public API.

No digests yet

The first daily digest will be generated tomorrow. Check back then to see the chain begin.

Verify independently

Fetch the full digest history from the integrity API at GET /api/v1/integrity. Each record includes the concatenated input that was hashed, so you can recompute every digest yourself and confirm the chain is intact.