How this works / Signed record

Problem revision

Casimir repulsion between solid bodies separated by vacuum

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
30fa20dffec836a2567f2aa27c595f8b7279bc6cc299b2060977e64b885e854a
Content hash
bb39268817b1928b35fdd5fbefb702b43d2e08ae906cc9771ca09f5810aab770
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
382
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:17:53Z — the Bitcoin date is the one that counts