● DEMO verify
Capture · Hash · Anchor · Verify

Verify an Agreement Receipt

A receipt provides a reference hash for comparison with the file. Bitcoin timestamping via OpenTimestamps is planned but not yet active. A completed OpenTimestamps proof, the matching file and access to the required Bitcoin verification data can support independent timestamp verification without a PLENA server.

Look up by receipt ID

Enter an ID like PLN-XXX-XXX-XXX.

Demo limitation, stated plainly: demo receipts are stored in this browser only (localStorage + IndexedDB). A shared/server lookup is Phase 3. If you open an ID created on another device, it won't be found here — use the “file + proof” tab instead, which works for anyone.

Verify file against its proof

Upload the original file and its .ots proof. We hash the file locally and check the proof against the Bitcoin blockchain. No PLENA data involved — this is pure OpenTimestamps and works for any third party.

Match a file to a receipt in this browser

Re-upload a file; we hash it and look for a matching receipt stored on this device, then re-check its anchor.

Anchor status legend

What a receipt proves.