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
- b5ae73bf5627261607918ff50406ee2cbebecf4521a4453a16f62f855d91c4c6
- Content hash
- e8bf74790d274ee2a5b05afa4c47f06f0a4413d94934b1fd72e65e7c4d115be2
- Signed by
- c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
- Log entry
- 881
- Checkpoint
- Size 2,123, being published
- Bitcoin date
- Block 969,698
- Created (claimed)
- 2026-10-03T07:17:58Z — the Bitcoin date is the one that counts