Certificate of Authenticity

Seal & signature

Device signature: △ Format-only (unsigned)

Blockchain timestamp (OTS): Sealed

Hash chain (sha256)
cc610a9bf1e69725b6befbfa1e4c1e7bfcccaa06760a3a89aada27c73a72765c

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.