ERC-721
A standard for non-fungible tokens (NFTs) on Ethereum, representing unique digital assets.
What is ERC-721?
ERC-721 is an Ethereum standard for non-fungible tokens (NFTs), introduced in 2018, where each token is unique and indivisible. Unlike ERC-20 tokens, ERC-721 tokens represent distinct assets, such as digital art, collectibles, or in-game items, with metadata stored on-chain or via IPFS. Key functions include ownerOf and transferFrom, enabling ownership tracking and transfers. Popularized by projects like CryptoPunks and Bored Ape Yacht Club, ERC-721 underpins the NFT market, ensuring interoperability across Ethereum-based platforms.
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