ERC-721 (NFT Standard)
The Ethereum standard interface for non-fungible tokens that lets wallets and marketplaces handle any unique token, including tokenized domains, alike.
- glossary
ERC-721 is the Ethereum standard for non-fungible tokens (NFTs). It defines a common interface — ownership, transfer, approval — that wallets, marketplaces, and other contracts can rely on. Because tokenized domains are typically implemented as ERC-721 NFTs, they get instant compatibility with the broader NFT ecosystem: OpenSea, Blur, and similar marketplaces can list them; standard wallets like MetaMask, Rabby, and hardware wallets can hold them; NFT-aware lending and rental protocols can plug into them. There is also a related batch standard, ERC-1155, used for fungible/semi-fungible tokens — domains are not usually issued under ERC-1155 because each domain is unique. Reference: EIP-721 specification.
Related keywords
- NFT standard
- Ethereum token standard
- non-fungible token
- tokenized domain standard
- ERC-721
- what is ERC-721
- ERC-721 meaning
- ERC-721 definition
Contributors
Namefi is a collective of engineers, designers, and operators who obsess over building tools that make managing your onchain domain names effortless.
Victor Zhou is a technology founder and standards editor focused on digital identity and trust. He founded Namefi, edits Ethereum Improvement Proposals, and previously led smart-contract architecture work at Google Labs.
His work sits at the intersection of naming, ownership, and the systems people use to establish identity online. That perspective makes him especially interested in the way names move between personal meaning, public recognition, and digital infrastructure.
For Namefi, Victor edits and writes about domains as durable digital identity: how names become ownable onchain assets, how tokenization changes custody and trust, and what naming can learn from the systems people use to establish identity online.