Results for “NFT vs ERC-721”

NFT

An NFT (non-fungible token) is a token on a blockchain that is unique: each one has its own ID and cannot be swapped one-for-one with another. It is often linked to digital art, a collectible or a membership, and the blockchain records who holds it.

What it means for you. Buying an NFT buys the token, not automatically the copyright in the work it points to; creators can keep those rights. The image is often stored off the blockchain behind a link, and each NFT needs its own buyer, so one can be hard to sell at any price.

Sources: ethereum.org: Non-fungible tokens, EIP-721: Non-Fungible Token Standard, US Copyright Office and USPTO: Non-Fungible Tokens and Intellectual Property · checked 4 October 2026

ERC-721

ERC-721 is the Ethereum standard for non-fungible tokens, where each token is one of a kind. Every token has its own ID number inside its contract, and the standard defines how to look up its owner, transfer it, and point to a description of what it represents.

What it means for you. The token usually points to its image or file through a link (the tokenURI) rather than holding it; if that link goes offline, the picture can vanish while you still own the token. The setApprovalForAll function hands one address control of every token you hold from that contract, so granting it to the wrong address can cost you all of them.

Source: EIP-721: Non-Fungible Token Standard · checked 4 October 2026