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
- 550395cea74fb01dfce230e366c9f67c7f9cbc13c2b86a9676013f21bccc2bc2
- Content hash
- 902d12b8760e771597cd1bce0045aef6297615f112f89f70d622a0a7fdd95a36
- Signed by
- c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
- Log entry
- 1,939
- Checkpoint
- Size 2,123, being published
- Bitcoin date
- Block 969,698
- Created (claimed)
- 2026-10-03T07:18:09Z — the Bitcoin date is the one that counts