# ERC-721

ERC-721 is a standard for representing the ownership of different unique tokens, also known as “non-fungible tokens”. Tokens made to the ERC-721 standard are indivisible, distinguishable, and can represent a collection of assets. An ERC-721 token can also have different value than another token from the same smart contract.

## The standard of unique tokens

ERC-721 tokens are mostly used for collectables and as a way to tokenize unique items and assets in digital games. The standard provides basic functionality to transfer and track the ownership of NFTs.

## Related

- [What we support](/what-we-support) · [Contracts Data](/products/contracts) · [Developer portal](https://developers.cryptoapis.io/)