How this works / Signed record

Problem revision

Location of the neutron drip line beyond neon

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
423c65cc48bfc3d473c1f0371596b407b81b9543fd4c21376c5bd93ef7ab7b17
Content hash
b0b845748590001ac970e50231992725d37221064c6e4925c9ae4912dccbc5a7
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
1,768
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:18:07Z — the Bitcoin date is the one that counts