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| Discover all about the extensible & flexible smart contract templates. |
Datatoken Templates
Each data NFT or datatoken within Ocean Protocol is generated from pre-defined template contracts. The templateId parameter specifies the template used for creating a data NFT or datatoken, which can be set during the creation process. The templateId is stored within the smart contract code and can be accessed using the getId() function.
it("#getId - should return templateId", async () => {
const templateId = 1;
assert((await erc20Token.getId()) == templateId);
});
Currently, Ocean Protocol supports 1 template type for data NFTs and 2 template variants for datatokens: the regular template and the enterprise template. While these templates share the same interfaces, they differ in their underlying implementation and may offer additional features.
The details regarding currently supported datatoken templates are as follows:
Regular template
The regular template allows users to buy/sell/hold datatokens. The datatokens can be minted by the address having a MINTER role, making the supply of datatoken variable. This template is assigned templateId 1 and the source code is available here.
Enterprise template
The enterprise template has additional functions apart from methods in the ERC20 interface. This additional feature allows access to the service by paying in the basetoken instead of the datatoken. Internally, the smart contract handles the conversion of basetoken to datatoken, initiating an order to access the service, and minting/burning the datatoken. The total supply of the datatoken effectively remains 0 in the case of the enterprise template. This template is assigned templateId 2 and the source code is available here.
To identify the template used for a specific asset within the Ocean Protocol, you can easily retrieve this information using any network explorer. Here are the steps to follow:
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Visit the network explorer where the asset was published.
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Search for the datatoken address
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Once you have located the datatoken address, click on the contract tab to access more details.
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Within the contract details, we can identify and determine the template used for the asset.
Let's identify together the template of this asset published in the Ocean Market:
{% @arcade/embed flowId="wxBPSc42eSYUiawSY8rC" url="https://app.arcade.software/share/wxBPSc42eSYUiawSY8rC" %}
{% hint style="info" %} Ocean Protocol might support additional variations of data NFT/datatoken by adding new templates. {% endhint %}