How this works / Signed record

Problem revision

How young is Mimas's hidden ocean, and how did it form?

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
869dc2bccb85b4ff5704cb15ef13a665b1b1d36d630fd32f2b78b197ef3044d8
Content hash
16ae19f5a312224c0fbb5aa52cd1d51b095fbd008145232780bbfa8e0bde0fed
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
1,345
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