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erc-721

What does erc-721 mean?

The token standard on Ethereum defining non-fungible tokens, where each token is unique and individually owned; the backbone of most NFTs.

"It's a standard ERC-721, so any marketplace supports it."

Origin

Ethereum Request for Comments #721, the canonical NFT standard.

Frequently asked questions

What is ERC-721?
It's the Ethereum token standard for non-fungible tokens, where each token is unique and individually owned — the foundation of most NFTs.
What's the difference between ERC-721 and ERC-20?
ERC-721 tokens are non-fungible and each one is unique, while ERC-20 tokens are fungible and interchangeable like regular currency.
Why does ERC-721 matter for NFT marketplaces?
Because it's a widely adopted standard, any marketplace that supports ERC-721 can display and trade an NFT built to it.
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Slang definitions: FreeDict original editorial.