# Introducing ERC-7160: Multi-Metadata NFTs

By [Marco](https://paragraph.com/@marco-4) · 2023-07-27

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After the success of [Patrick Amadon’](https://twitter.com/patrickamadon)s [Doppelgänger project](https://stacks.transientlabs.xyz/doppelganger), I started thinking about how a similar mechanism could be used on a per-token basis. There were a bunch of use cases that I kept coming up with. I’ve listed some of them below:

*   An NFT with different aspect ratios stored as additional metadata so that the work can be properly displayed at any gallery, regardless of display size.
    
*   An on-chain history of revisions to token metadata.
    
*   Dynamic and evolving metadata.
    
*   and much more.
    

I couldn’t get this idea out of my head, so I started drawing out how it would work in code.

EIP Genesis
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[0xG](https://twitter.com/0x0000G) reached out the the [Transient Labs](https://twitter.com/TransientLabs) Twitter account asking if we would want to collaborate and turn this mechanism into an EIP (Ethereum Improvement Proposal).

Being a co-author on an EIP has always been one of my dreams since entering the space. I was excited when 0xG reached out, as they laid out a good case for how this could be an EIP.

We went back and forth a good amount on what is really needed in the EIP and I think we found a great interface that unlocks new ways for creators to use the blockchain!

ERC-7160
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You can find the full specification [here](https://eips.ethereum.org/EIPS/eip-7160). We are planning on moving this EIP into the Review stage soon, so any feedback would be greatly appreciated!

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*Originally published on [Marco](https://paragraph.com/@marco-4/introducing-erc-7160-multi-metadata-nfts)*