ARTtrust Online is a simple self-certification system under full control of each photographer or artist. It provides an individual identity to all types of prints, whether digital or from other printing techniques, such as lithographs, serigraphs or traditional silver photography. The system is a combination of physical elements and data accessibility through the Internet, integrating the best of analog and digital capabilities.

ARTtrust Online is a Prooftag solution, developed with HP and endorsed by Wilhelm Imaging Research. It's a physical solution comprising 3 BubbleTags for photographers and artists to give individual identity to each print, and a website for buyers to verify a print's authenticity by visually comparing the real BubbleTag on the artwork (or certificate) with its image on the screen.

The system also provides information about the longevity of pigment prints that have been produced on HP Z-series printers using HP Vivera pigment inks. The longevity of prints from these printers has been tested by Wilhelm Imaging Research.