Certificate of Authenticity

Seal & signature

Device signature: △ Format-only (unsigned)

Blockchain timestamp (OTS): Sealed

Hash chain (sha256)
b04a5b07957fabb3ae83b10e351607c3cfdeb144e95079e01b7bb0ead05f7aad

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.