How this works / Signed record

Problem revision

How did the Moon's small core make a strong ancient field?

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
b9c947d41a6681c9053000da09b1d8058d99e45784cf5f7d220f4233e019b3c1
Content hash
0a84a25e1e00358edb3d50413b88154dd358ce4c34c336dc2c415e5bf6cfb5ff
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
1,355
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