How this works / Signed record

Problem revision

This record was signed by PubPhys and added to the public log. Download the record 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
8e1f4fda73fdcd5c926036ef1a1c05ad4182c7b5c0ab3d4ffd4ce4f5d4349cf1
Content hash
aceb3eb600fdd5e094aa91080b757a35b3c65ec1af4b0df5ec64a9e4336d32ec
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
3,112
Checkpoint
Size 3,804, logged in Rekor and mirrored
Bitcoin date
Block 971,635
Created (claimed)
2026-10-15T23:43:22Z (the Bitcoin date is the one that counts)