TECHNICAL CONCEPTS

ERC-721 (Ethereum Request for Comment 721)

Definition

ERC-721 is the technical standard for non-fungible tokens (NFTs) on Ethereum. It defines how to create unique, indivisible tokens that can represent ownership of digital or physical assets.

Example

💡 Example

CryptoKitties and most NFT collections follow the ERC-721 standard to ensure compatibility with wallets and marketplaces.

Risks to Consider

⚠️ Risks
  • Standard limitations
  • Gas costs
  • Compatibility issues

Related Terms

Related Articles

Non-fungible tokens explained with Blastoise and Charizard

“Non-fungibles” — don’t let yourself be fooled by the mushroom-evoking name, fungibility is an old concept that is finding a second wind nowadays. It’s mostly about collectibles and video games for now, but it will soon outgrow these industries. Indeed, the potential of non-fungibles tokens is much more significant than this: from official documents to titles of ownership, their use cases are diverse and numerous. Let’s start by establishing the basics about non-fungible tokens (NFTs from now on) thanks to Pokémon cards before we dive into their potential use cases and the future developments of the underlying technology.
Non-fungible tokens explained with Blastoise and Charizard