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
- da8e137f7871edae9513baf4903ff7a1fd1cdb2aa8809e0b18796577cc5b71a0
- Content hash
- 21fdada7acdb9397249a9a9b55739c1784bf9f9956c17027cda41c3f8aa5dd32
- Signed by
- c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
- Log entry
- 741
- Checkpoint
- Size 2,123, being published
- Bitcoin date
- Block 969,698
- Created (claimed)
- 2026-10-03T07:17:57Z — the Bitcoin date is the one that counts