How this works / Signed record
Problem revision
This record was signed by PubPhys and added to the public log. Download the proof and check it with the open verifier: it recomputes every fingerprint, checks the PubPhys signature against the published key, finds the entry in the log and checks the Bitcoin date, without relying on this site.
- Record hash
- c39d1fa357256229047797db573128a352f17cf2cb0dd4f45c9c1f9884d657e7
- Content hash
- f28f683f2ed88c5d76c1e8078c07018f06014e39915d8b0c6be69989dc78dfe4
- Signed by
- c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
- Log entry
- 1,418
- Checkpoint
- Size 2,123, being published
- Bitcoin date
- Block 969,698
- Created (claimed)
- 2026-10-03T07:18:03Z — the Bitcoin date is the one that counts