How this works / Signed record

Problem revision

Zeroth law for two driven systems in weak contact

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
5653bc57a99ccfc77b9bb532304e6b009f7fc34ee24e56f75372b6b9e18d513d
Content hash
928994687cdbd73327a37e3d4e9e0b88c9c7a0a9ed6cdd1e76e42f0d4a0afeb7
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
2,109
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:18:11Z — the Bitcoin date is the one that counts