How this works / Signed record

Problem revision

Traceable three-dimensional dose measurement

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
ba4dc4f571ca924610e6af69089ceb8dde0b8bd8783de83fe87ef608d9903c01
Content hash
3c920e521b5c65b1bd26a0598d6f942405cbd948ba6d855d36483b3cc510b3f5
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
1,676
Checkpoint
Size 2,123, being published
Bitcoin date
Block 969,698
Created (claimed)
2026-10-03T07:18:06Z — the Bitcoin date is the one that counts