How this works / Signed record

Problem revision

Patient stopping-power accuracy below one percent

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
a22354c180e8fbc6c1d75512c16d788ed379a8f5cb6bc266153c39ca43612c0f
Content hash
cc3027c809c990565421a6c9b114c7045e47903dd152df458837024556fc5ea6
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
1,694
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:18:06Z — the Bitcoin date is the one that counts