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developers/contracts/datanft-and-datatoken.md
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<figure><img src="../../.gitbook/assets/architecture/DataNFT&Datatokens.png" alt=""><figcaption><p>Data NFTs and Datatokens</p></figcaption></figure>
In summary: A [**data NFT**](data-nfts.md) serves as a **representation of the copyright** or exclusive license for a data asset on the blockchain, known as the "\[**base IP**]\(../../discover/glossary.md#base ip)". **Datatokens**, on the other hand, function as a crucial mechanism for **decentralized access** to data assets.
In summary: A [**data NFT**](data-nfts.md) serves as a **representation of the copyright** or exclusive license for a data asset on the blockchain, known as the "[**base IP**](../../discover/glossary.md)". **Datatokens**, on the other hand, function as a crucial mechanism for **decentralized access** to data assets.
For a specific data NFT, multiple ERC20 datatoken contracts can exist. Here's the main concept: Owning 1.0 datatokens grants you the ability to **consume** the corresponding dataset. Essentially, it acts as a **sub-license** from the \[base IP]\(../../discover/glossary.md#base ip), allowing you to utilize the dataset according to the specified license terms (when provided by the publisher). License terms can be established with a "good default" or by the Data NFT owner.
For a specific data NFT, multiple ERC20 datatoken contracts can exist. Here's the main concept: Owning 1.0 datatokens grants you the ability to **consume** the corresponding dataset. Essentially, it acts as a **sub-license** from the [base IP](../../discover/glossary.md), allowing you to utilize the dataset according to the specified license terms (when provided by the publisher). License terms can be established with a "good default" or by the Data NFT owner.
The choice to employ the ERC20 fungible token standard for datatokens is logical, as licenses themselves are fungible. This standard ensures compatibility and interoperability of datatokens with ERC20-based wallets, decentralized exchanges (DEXes), decentralized autonomous organizations (DAOs), and other relevant platforms. Datatokens can be transferred, acquired through marketplaces or exchanges, distributed via airdrops, and more.
You can \[publish]\(../../discover/glossary.md#to publish) a data NFT initially with no ERC20 datatoken contracts. This means you simply aren’t ready to grant access to your data asset yet (sub-license it). Then, you can publish one or more ERC20 datatoken contracts against the data NFT. One datatoken contract might grant consume rights for **1 day**, another for **1 week**, etc. Each different datatoken contract is for **different** license terms.
You can [publish](../../discover/glossary.md) a data NFT initially with no ERC20 datatoken contracts. This means you simply aren’t ready to grant access to your data asset yet (sub-license it). Then, you can publish one or more ERC20 datatoken contracts against the data NFT. One datatoken contract might grant consume rights for **1 day**, another for **1 week**, etc. Each different datatoken contract is for **different** license terms.
For a more comprehensive exploration of intellectual property and its practical connections with ERC721 and ERC20, you can read the blog post written by [Trent McConaghy](http://www.trent.st/), co-founder of Ocean Protocol. It delves into the subject matter in detail and provides valuable insights.

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developers/contracts/datatokens.md
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### Understanding Datatokens and Licenses
Each datatoken represents a [**sub-license**](../../discover/glossary.md#sub-licensee) from the base intellectual property (IP) owner, enabling users to access and consume the associated dataset. The license terms can be set by the data NFT owner or default to a predefined "good default" license. The fungible nature of ERC20 tokens aligns perfectly with the fungibility of licenses, facilitating seamless exchangeability and interoperability between different datatokens.
Each datatoken represents a [**sub-license**](../../discover/glossary.md) from the base intellectual property (IP) owner, enabling users to access and consume the associated dataset. The license terms can be set by the data NFT owner or default to a predefined "good default" license. The fungible nature of ERC20 tokens aligns perfectly with the fungibility of licenses, facilitating seamless exchangeability and interoperability between different datatokens.
By adopting the ERC20 standard for datatokens, Ocean Protocol ensures compatibility and interoperability with a wide array of ERC20-based wallets, [decentralized exchanges (DEXes)](https://blog.oceanprotocol.com/ocean-datatokens-will-be-tradeable-on-decentrs-dex-41715a166a1f), decentralized autonomous organizations (DAOs), and other blockchain-based platforms. This standardized approach enables users to effortlessly transfer, purchase, exchange, or receive datatokens through various means such as marketplaces, exchanges, or airdrops.