OpenSea

OpenSea is a cryptocurrency Ethereum-focused non-fungible token (NFT) marketplace where anyone can create, sell, and buy NFTs. NFTs are unique and non-fungible digital items stored on the blockchain. During the second half of 2021, roughly ~85% of all non-fungible tokens (NFTs) marketplace transactions were happening on OpenSea. NFT buyers, sellers, and traders increased the volume of OpenSea in 2021 to over $14 billion.