The first purpose of this article is to show that non-fungible tokens (NFTs), i.e. cryptographic tokens created by the uploading of an artwork on, for instance, the decentralised Ethereum blockchain that uses native cryptocurrency, accept verification tools for authenticity, provenance, scarcity and preservation. The paper turns to the opposition between autographic and allographic systems developed by Goodman (Languages of Art: An Approach to a Theory of Symbols, The Bobbs-Merrill Company Inc, Indianapolis, 1968). Then, attention is focused on the reception practices, when the transfer of a certificate of ownership of the digital artwork entails specific ways of collecting art. Finally, the question of the work of art is addressed. The art criteria are redefined, in the light of art movements of the twentieth century.