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
3e8de1a2c56617a2b054d87fc48f144ecfb79ebcfbf75d27a5f937a90f3bdad0
Content hash
4e288f5b9828bf18fcb9bc50460554cd510f98bac98ce133bf433235f92e2129
Signed by
c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da
Log entry
2,650
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)