How this works / Signed record

Problem revision

Blackbody radiation shift of lattice clocks at the 1e-19 level

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
ad2186ee21e8027da2db626cd3c0fcc66f460183bebd5f91ef022b6762ab80ba
Content hash
ca39f1501d48beccbe512232326a102c9f52417b78e8ad2185e2cc84af8815dd
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
442
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:17:54Z — the Bitcoin date is the one that counts