How this works / Signed record

Problem revision

What criterion decides when rising magma shatters into ash?

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
680cc40f99f62c5ee111c7eb02d01031b41e2d72ffe48b62f9d535cbca1306dd
Content hash
26ae2890a14ea42651dfb910b3dc4d01fed855873d999ffd9cc1c6e56982e548
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
1,386
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:18:03Z — the Bitcoin date is the one that counts