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
- a90bd6663cbf5abec97f0432452da3a9d0dca08f8e38ba51896680250bc2c1c8
- Content hash
- 64b839639727305e1f4e176806f763aee9a510633635f29935b67e96d789e918
- Signed by
- c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
- Log entry
- 884
- Checkpoint
- Size 2,123, being published
- Bitcoin date
- Waiting for Bitcoin (usually a few hours)
- Created (claimed)
- 2026-10-03T07:17:58Z — the Bitcoin date is the one that counts