In the high-stakes world of art, authentication and provenance aren’t mere formalities but pillars used to guide value and ...

They’ll get to keep the prints, but will apparently have to send back the certificates of authenticity that came ... when the singer-artist was still hand-signing. In its Sunday statement ...

The information is as unalterable on the blockchain as its certificate of authenticity, and part of a smart contract between artists, dealers and collectors. (Arcual can handle transactions of up ...

This work was hand signed by the artist on the opening of the retrospective from ... This work is also accompanied by a signed Certificate of Authenticity from The publisher of The Mail on Sunday, who ...

Maurizio Cattelan is one of the defining artists of our generation and ... The buyer will receive a certificate of authenticity, which includes instructions, as well as one banana and a roll ...