How this works / Signed record

Problem revision

Predicting run-up distance to detonation in smooth and obstructed tubes

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
294e179ab5b7c3df6837dd8fe170966939be4498207aed19e818a90ecf49ad27
Content hash
625beda1f0748f0c0fe4611e00c1a4471cad500ba5c8a784e4b5de39272ffc14
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
1,448
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:18:04Z — the Bitcoin date is the one that counts