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
- 1f9c1e76c74b00ae66cb4c91d5f16800d2158e98f8f6d7588444d3cb03a5ba61
- Content hash
- a390a2b80788cbfec2b1904ece4ca22ca22f2b2527fc74c2cf0c06c319820c2b
- Signed by
- c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
- Log entry
- 992
- Checkpoint
- Size 2,123, being published
- Bitcoin date
- Block 969,698
- Created (claimed)
- 2026-10-03T07:17:59Z — the Bitcoin date is the one that counts