How many artist are supporting that project and where I can look at their names?
I think you have overlooked this information on the project site.
https://art-pro.ioThe list of 16 participants, but it is likely that now there are more. As I understand it, the project team continued to search for new members all this time.
Ok, 16 artists thats cool, but it is marketplace, the team need to increase buyers quantity.