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
- fe405e659622af0fd760266b0bba32cbb911ab4934378f48f513f70cce7200c8
- Content hash
- f430295b7583201d99b1cf1e43db2c3c1e347c221b04a9f734658563b97c2f15
- Signed by
- c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
- Log entry
- 852
- 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