All of the artworks put up for sale have to be created by a living artist. Also, it is not allowed to upload artworks which follow.art believes to be:
offensive, including material that incites racial hatred or promotes discrimination;
obscene or pornographic
materials which infringe, misappropriate or violate a third party’s patent, copyright, trademark, trade secret, moral rights or other intellectual property rights, or rights of publicity or privacy, or result in the violation of any applicable law or regulation.