Certificate of Authenticity

Seal & signature

Device signature: △ Format-only (unsigned)

Blockchain timestamp (OTS): Sealed

Hash chain (sha256)
aacd5473893cbb57cb23514040e50b7ae91860386ebd95aeaf6d8f3258f439dd

Scan the QR to verify this certificate online yourself.

This certificate attests that the creation process (strokes, pressure, timing) of the work above was recorded and sealed by the Sigan recorder. A hash chain and device signature detect tampering, and anyone can re-verify authenticity at the address above.