Proof’s Grails III is the third iteration of its mystery NFT compilation series. In February 2022, Grails I dropped, with work from entrepreneur Gary Vaynerchuk, CryptoPunks and Meebits creator Larva Labs and generative artist Tyler Hobbs. The next edition, Grails II, was released in August and featured works from Art Blocks founder Erick Calderon, Pussy Riot co-founder Nadya Tolokonnikova and generative artist Refik Anadol.