How this works / Signed record

Problem revision

Lowest mean transverse energy obtainable from a photocathode

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
cc1e984224de9035164a5150971df22d94799361735220ea88d7c9ff6331bd35
Content hash
6a087fce13f08a776ecb1fc4ccb966e47611ce060e9e9ed7346c92edf83521b6
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
683
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:17:56Z — the Bitcoin date is the one that counts