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Akshay 2021-08-17 12:11:30 +02:00
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content/concepts/v4-nft.md
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@ -10,6 +10,12 @@ A non-fungible token stored on the blockchain represents a unique asset. NFTs ca
Ocean Protocol defines an [ERC721Factory](https://github.com/oceanprotocol/contracts/blob/v4Hardhat/contracts/ERC721Factory.sol) contract which will allow users to deploy ERC721 contract instances on any of the supported networks. The deployed contract can be associated with Metadata information which describes, also published on-chain. The [Metadata](https://github.com/oceanprotocol/contracts/blob/v4Hardhat/contracts/metadata/Metadata.sol) contract will store the information about the asset, and associated access rights defined through roles. Ocean Protocol defines an [ERC721Factory](https://github.com/oceanprotocol/contracts/blob/v4Hardhat/contracts/ERC721Factory.sol) contract which will allow users to deploy ERC721 contract instances on any of the supported networks. The deployed contract can be associated with Metadata information which describes, also published on-chain. The [Metadata](https://github.com/oceanprotocol/contracts/blob/v4Hardhat/contracts/metadata/Metadata.sol) contract will store the information about the asset, and associated access rights defined through roles.
### Combining ERC721 and ERC20
ERC20 interface represents fungible tokens. ERC721 and ERC20 combined together can be used for sub-licensing. These sub-licenses can be traded on any AMM as the underlying contract is ERC20 compliant.
Ocean Protocol's [ERC721Template](https://github.com/oceanprotocol/contracts/blob/v4Hardhat/contracts/templates/ERC721Template.sol) provides functionality to create comibinations of ERC721 and ERC20 contract pairs, each of this pair can represent a different sub-license.
![Image 1](images/v4-nft-1.png) ![Image 1](images/v4-nft-1.png)
Once the contract is deployed, it will be available on the Ocean Marketplace for trade. Once the contract is deployed, it will be available on the Ocean Marketplace for trade.