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
- 28cb8649404feb2fb69ae2458654ee4f465cfd4a38467e77c37ff3059088d205
- Content hash
- 42dea3299d06c731112c16224b50ebf39bca571ef84641c7ec57dcb41b8f2472
- Signed by
- c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
- Log entry
- 891
- 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