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
- ff41ca193e419a66836cc711a7642fea0cbe071ce55e7243b2bc9770312e93a5
- Content hash
- ef8565da48f72fa53ecc5c041e6d6465f15c50569595528b26596e032afe57e1
- Signed by
- c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
- Log entry
- 773
- 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