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
- 0d2afc9de390ac8507e02168918d96af763e31c1aeab1ae3dd1f518d15cd0fbb
- Content hash
- b19526a196b8f84aa4fcdf744391122f244df2f897ec6d6ae2e8ae6c9c0ccd19
- Signed by
- c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
- Log entry
- 789
- Checkpoint
- Size 2,123, being published
- Bitcoin date
- Waiting for Bitcoin (usually a few hours)
- Created (claimed)
- 2026-10-03T07:17:57Z — the Bitcoin date is the one that counts