How this works / Signed record

Problem revision

Classical verification of quantum computation without cryptographic assumptions

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
d72bc17d25756facd28ff8c32adb86821dfb4aab5ec780493b5d12ea7e8b2011
Content hash
bdd14d512d6bb4314e87ac2d87abd1218b9e9078d0703d992351049bdd291a46
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
2,064
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