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
078d5083c13f2e39348c2f3c68c274474f7a3911a5897c0966460dddcbc94d47
Content hash
75067f38507a850a92778854dac2288f9772b1f4b6ab2b433199f57295ddfcb3
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
3,362
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)