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πŸ¦‘ Smart contracts for Ocean Protocol v4. Ocean v4 is part of the Ocean Protocol toolset.

This is in beta state and you can expect running into problems. If you run into them, please open up a new issue.

πŸ“š Installation

For quick installation of the contract ABIs:


npm install @oceanprotocol/contracts


pip3 install ocean-contracts

βš™οΈ Usage

By default, Python does not support importing json files directly, so it is recommended to use json-sempai package in order to automatically importing ABIs/json artifacts.

pip3 install json-sempai
# install the ocean-contracts package.
from jsonsempai import magic
from artifacts import address



πŸ„ Quickstart


  • Base IP is now represented by an NFT, from which a datapublisher can create multiple ERC20s representing different type of access for the same dataset.

  • An automated Datatoken Staking helps with the initial DTs distribution and price stability. Goodbye rug pulls!

  • Help Ocean Community Monetize: there's a swap fee for the Ocean Community, if Ocean or allied tokens are the basetoken in a pool, Ocean Community will receive 0.1% swap fee, otherwhise it will be 0.2%.


  • Introduce an advanced Fee Structure both for Market and Provider runners.

  • Roles Administration: there are now multiple roles for a more flexible administation both at NFT and ERC20 levels

  • Key-value store in the NFT contract : NFT contract can be used to store custom key-value pairs (ERC725Y standard)

  • Multiple NFT template support: the Factory can deploy different types of NFT templates

  • Multiple datatoken template support: the Factory can deploy different types of Datatoken templates

Publisher Flow

Interaction flow from DataPublisher point of view.

Go to publisher flow

Roles Diagram

How roles are handled in the v4.

Go to roles diagram

Functions you will need

Selection of most common functions.

Go to functions

Bundle functions

Helper functions which can perform multiple steps in 1 call.

Go to helpers

If you have any difficulties with the quickstarts, or if you have further questions about how to use the contracts please reach out to us on Discord.

If you notice any bugs or issues with this repo please open an issue on github. -->

The ocean.js and libraries wrap contracts in JavaScript and Python respectively. They each have quickstart guides.

πŸ¦‘ Development and Testing

Run hardhat in a new terminal:

export ALCHEMY_URL=""
npm install
npx hardhat node

Open a new terminal to run the tests:

export ALCHEMY_URL=""

npm run test:full
# same thing, but with coverage reporting
npm run test:full:cover

Unit Tests

You can execute just unit tests with:

npm run test:unit

Flow Tests

You can execute just flow tests with:

npm run test:flow

πŸ› License

Copyright ((C)) 2022 Ocean Protocol Foundation

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
See the License for the specific language governing permissions and
limitations under the License.