Each Minnaar comes with a digitally-signed Certificate of Authenticity (sometimes referred to as a Token of Authenticity) and it is recorded on the Liquid Blockchain. You can find and verify the corresponding certificate in the description of each Minnaar in the online catalog.
Possession of this certificate serves as evidence of provenance, and supports the authenticity and ownership of the corresponding artwork.
When transferring ownership of a Minnaar, the certificate should always be transferred along with the artwork to assure provenance. Certificates can be received, held, and transferred using a compatible app like Blockstream Green.