How this works / Signed record

Problem revision

Suppressing electron-beam shot noise below the random 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
a06d57a97500fbb06bcd199f631f9064f9f7d863240b4d02135b5524eb129551
Content hash
c287eba92bc84f483e52eb4b88c318c115131afa40c9f8e12a56dba6f86d3de3
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
667
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