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docs/developers/datanft-and-datatoken/templates.md

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Templates

TemplateIds

Each data NFT or a datatoken is cloned from pre-defined template contracts. The templateId parameter refers to the template from which a data NFT or datatoken is created. The templateId can be set while creating data NFT/datatoken. The templateId is stored in the code of the smart contract and can be retrived using getId() function. Currently, Ocean protocol supports 1 template type for data NFT and 2 template variants for datatokens, namely: regular template and enterprise template. Each template supports the same interfaces but differs in the underlying implementation and can have additional features.

The only data NFT template currently available has templateId 1 and the source code is available here.

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 datatoken. Internally, the smart contract handles 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.

NOTE: Ocean Protocol might support additional variations of data NFT/datatoken by adding new templates.