By invitation only
Provenance for
physical art
Keystone is a registry for physical artworks. A registered work can carry a Keystone NFC tag that is authenticated with a tap of a phone, and each change of ownership recorded through Keystone comes with a signed certificate that can be verified online.
Request accessRegistry access is through the Keystone app, by invitation.
Authentication
NFC chip verification using AES-128 cryptography
Provenance
Ownership changes recorded from registration onwards
Certificates
A signed certificate for each recorded transfer, verifiable online