Curio Cards is an early art project on the Ethereum blockchain, which became popular after renewed interests in non-fungible tokens (NFTs) in 2021. The project was created in 2017 to introduce digital art collecting to Ethereum, generate awareness of crypto and support artists through it. The full set of Curio Cards consists of 30 cards, with artwork by seven different artists, as well as the misprint card "17b". After being identified as the first art NFTs on Ethereum, a complete collection of Curio Cards was sold for ETH393 ($1,267,320) at the Christie's Post-War to Present auction in October 2021.