How this works / Signed record

Problem revision

Continuous superradiant laser on a millihertz atomic clock transition

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
ceac71f4e2b28f82e104e7ff689d72afc96077c34ddd20c6acbada84f369fe85
Content hash
24f4126064fa07b8bf4d7bdb6f7696fcea11c0cc77d3a34fe45698a1abc0e4ea
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
388
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:17:53Z — the Bitcoin date is the one that counts