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Automated evidence · Independently verifiable

We don’t ingest article bodies—only manifests are stamped. Proofs remain verifiable even if the service pauses.

Stamp a file Verify a proof Documentation

Contact: contact@clockdo.com

How it works

  1. Select a file → browser computes SHA-256
  2. Submit hash → server generates OTS proof
  3. Download .ots → verify independently anytime

Or paste a SHA-256 hash directly. No account needed.