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
- b3689437b9ad67a894f30ebfc1e8eb7243f34b10aa539b045bc34f97bd260ff2
- Content hash
- 793dcfd98f9dc2fbf74cd9cb2604749bd9e50fd6b07944ed155d2515e4fba422
- Signed by
- c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
- Log entry
- 818
- 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