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
- d861da47304e085ce6745af9b19b6e6c4b027d039d0bc52532fdcecf12c1bd79
- Content hash
- f7172303d670dc40e512de58bda406bf8498666132daf42b5be4bbd3f1b07838
- Signed by
- c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
- Log entry
- 1,137
- Checkpoint
- Size 2,123, being published
- Bitcoin date
- Block 969,698
- Created (claimed)
- 2026-10-03T07:18:01Z — the Bitcoin date is the one that counts