OpenSea is a well-known peer-to-peer marketplace for purchasing, selling, and bidding on digital non-fungible tokens (NFTs). Like many of its competitors, OpenSea allows users to buy, sell, and discover various types of digital art, ranging from collectible digital versions of Nike basketball shoes to paintings of famous crypto entrepreneurs such as Vitalik Buterin, and everything in between. The OpenSea marketplace, like most NFT marketplaces, accepts Ethereum’s coin ether as payment for NFTs (ETH).