ArtSure.

The Fine Art Trade Guild's scheme for registering digital fine art prints that meet its print standards, used by printers and artists to back a limited-edition or archival claim with something a buyer can check. The Guild lists the requirements: lightfastness of 6 or more on the Blue Wool Scale in all areas of the print, a substrate pH of 7-9, a substrate of at least 250 gsm, and only inks approved by the printer manufacturer, from materials tested in a UKAS laboratory or an international equivalent. It sets no ink count. The mistake is selling prints as archival or museum grade on the strength of the paper box alone. When a customer or a gallery asks for the test data behind the claim, a shop that cannot produce it has to pull the wording from every listing that used it, and refund whoever bought on it.