How this works / Signed record

Problem revision

How large can a Wigner friend be while violating Local Friendliness?

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
c2dd9e53e0c2c026653209b88cb81d076bb196abdd0fe2c5028e0158f3d690e7
Content hash
c8f4e2065cb9b1ac42621ac79a9018b505f79e75761bf5fb8ca864f55762b91e
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
2,016
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:18:10Z — the Bitcoin date is the one that counts