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
- ad88fe5a9c920abbcd2d594e77ae88cfbf1fd8827593455038120a95e1694e5e
- Content hash
- 0e5b7568cda060a2a3eb24753a68a34b1694944a7201ddf1d62d97bbf3270cfb
- Signed by
- c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
- Log entry
- 2,090
- Checkpoint
- Size 2,123, being published
- Bitcoin date
- Block 969,698
- Created (claimed)
- 2026-10-03T07:18:11Z — the Bitcoin date is the one that counts