Art-money are physical objects, which must involve manual creation, as well as artist signature. Read more on the homepage of the International Bank Of Art Money, BIAM Pi-art-money My art-money are printed on cardboard and the surface has been worked on with an object so that there is a physical pattern of grooves on top of the picture. The physical patterns are all abstractions on the greek letter PI, which is also featured as part of each of the digital art-money. That is because, in addition to being Art-money, they are 'pi-art-money' which is something a bit different. Pi-art money does not have a manifest yet as the concept is under development.