How this works / Signed record

Problem revision

Is there a sharp boundary between airless and atmosphere-bearing planets?

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
0d1541ba7d7489c9807bf72ce3bdd8b8a2383bbc147f3d123f0c9a345b3d375d
Content hash
dcca070542c631ad620db738fc4e9d76c6855836f192325c41b1b4848be7d23a
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
489
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