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
- 04f218f38bbad6470edf3e2a8df57f1c11a6b3a9455a9b0733cea15aff82f7d3
- Content hash
- b1d5715fb2a63f1cfdb5cb740e56711ea2b197d8ee7ca1c0573be6e70a318dd6
- Signed by
- c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
- Log entry
- 1,899
- Checkpoint
- Size 2,123, being published
- Bitcoin date
- Block 969,698
- Created (claimed)
- 2026-10-03T07:18:08Z — the Bitcoin date is the one that counts