What is an ERC-721?

ERC-721 is a standard for creating non-fungible tokens (NFTs) on the Ethereum blockchain. Unlike fungible tokens, each ERC-721 token is unique and represents an individual asset, whether it be a piece of art, a collectible, or a digital item. The ERC-721 standard defines the necessary functions and interfaces for managing unique assets, including ownership tracking, transfers, and metadata storage. This standard has become the foundation of the NFT ecosystem, driving the growth of digital collectibles, gaming assets, and virtual goods.