The following documents and materials are recognized as valid evidence of copyright ownership:
- In-progress studio images or videos of the artwork
- Consignment paperwork from a gallery
- Invoice or bill of sale for the physical artwork
- Gallery inventory or exhibition checklist paperwork listing the physical piece
- Press clippings related to the artwork
- Art database listings
- Auction listings
- Museum, foundation, or institutional listings, as well as academic articles
- Documentation of commercial collaborations involving the artwork
- Will & testament, certificate of death, or a letter from a lawyer
- Contract of copyright ownership transfer or purchase
- Installation images of an art fair booth, including the artwork, the artist's name displayed in vinyl type as a booth heading, and the gallery's name and details on the booth's sign in the top left or right corner of the wall
- Confirmations from Seminal Sales Teams who personally visited the artist (e.g., studio visit, gallery opening, exhibition tour, art fair booth, etc.)