Example, two big American museums are Met (NYC) and MFA (Boston). Right now 4,900 items on sale for Exp; of these, 204 items are from Met, and 111 from MFA. But while Met grants OA (https://www.metmuseum.org/... MFA needs 'fair use' and explicit prohibits commercial use (https://www.metmuseum.org/... so if we decide to be commercial, we should remove items with tokens minted from MFA images (2%), - but we can safely use those from Met (4%).