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core-concepts/datanft-and-datatoken.md
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@ -44,7 +44,7 @@ The image above describes how ERC721 data NFTs and ERC20 datatokens relate.
We have implemented data NFTs using the [ERC721 standard](https://erc721.org/). Ocean Protocol defines the [ERC721Factory](https://github.com/oceanprotocol/contracts/blob/v4main/contracts/ERC721Factory.sol) contract, allowing **Base IP holders** to create their ERC721 contract instances on any supported networks. The deployed contract stores Metadata, ownership, sub-license information, permissions. The contract creator can also create and mint ERC20 token instances for sub-licensing the **Base IP**.
ERC721 tokens are non-fungible, thus cannot be used for automatic price discovery like ERC20 tokens. ERC721 and ERC20 combined together can be used for sub-licensing. Ocean Protocol's [ERC721Template](https://github.com/oceanprotocol/contracts/blob/v4main/contracts/templates/ERC721Template.sol) solves this problem by using ERC721 for tokenizing the **Base IP** and tokenizing sub-licenses by using ERC20. Thus, sub-licenses can be traded on any AMM as the underlying contract is ERC20 compliant.
ERC721 tokens are non-fungible, thus cannot be used for automatic price discovery like ERC20 tokens. ERC721 and ERC20 combined together can be used for sub-licensing. Ocean Protocol's [ERC721Template](https://github.com/oceanprotocol/contracts/blob/v4main/contracts/templates/ERC721Template.sol) solves this problem by using ERC721 for tokenizing the **Base IP** and tokenizing sub-licenses by using ERC20.
Our implementation has been built on top of the battle-tested [OpenZeppelin contract library](https://docs.openzeppelin.com/contracts/4.x/erc721). However, there are a bunch of interesting parts of our implementation that go a bit beyond an out-of-the-box NFT.