> For the complete documentation index, see [llms.txt](https://docs.opium.network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.opium.network/for-developers/protocol/eip-2547-composable-multiclass-token.md).

# EIP-2547: Composable Multiclass Token

#### Opium.Team has decided to create Ethereum Improvement Proposal for Opium token standard to receive an official name. Opium token standard is also known as ERC-721o.

If you can give us some feedback and review, we will be really grateful! 

The proposal you can find here <https://github.com/ethereum/EIPs/pull/2547>

#### [Read more about Opium token standard](https://docs.opium.network/introduction-to-opium/opium-token-standard-erc-721o)