How this works / Signed record

Problem revision

Minimum coil complexity for a given quasisymmetry quality

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
79b028108bc0f27f6435934cbc1b4edf7dac65b5bac67b7a6de27ee2cda7874d
Content hash
de4879244786cbe321207aae5430b61be366520c32106c4e25f3362d5e34db16
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
1,869
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:18:08Z — the Bitcoin date is the one that counts