How this works / Signed record

Problem revision

Gravitational free fall of muonium or positronium

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
bccf2c88a9b29e6f016806157c0b491713cf53991e9748e01d2b04707b53fceb
Content hash
8d8524c91f75f824965c4111700ba075c5820e77137433fee24e22584a03ed81
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
450
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