How this works / Signed record

Problem revision

Was the Moon-forming impactor isotopically Earth-like?

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
2b5e8c06479e7f3aa9ffc96227dc4df0f9b96b702abc44b8325da0d37af84eae
Content hash
0c22d6d78aba3ebe475db820ced761addbb569bcd7775605705bcda4e63c0330
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
1,305
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