How this works / Signed record

Problem revision

Do large earthquakes have a detectable preparation phase?

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
739740f66d0b461437dcfdffa381ecb55a9df0a65865b6c69f6ebd263bb91b73
Content hash
3977f34e90b5e5555b09a8218d23109aca2e42c4b4f701e420812ab8c687f889
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
1,312
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:18:02Z — the Bitcoin date is the one that counts