Certificate of Authenticity

Seal & signature

Device signature: △ Format-only (unsigned)

Blockchain timestamp (OTS): Sealed

Hash chain (sha256)
e3aac209869d363d975f4dcad3c3147b8299f65df2d0236f83eea87a6243458e

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.