1.0.0-alpha.34 • Public • Published



    🦑 Smart contracts for Ocean Protocol v4. https://oceanprotocol.com 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.

    📚 Installation

    For quick installation of the contract ABIs:


    npm install @oceanprotocol/contracts


    pip3 install ocean-contracts

    ⚙️ 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



    🏄 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. (Link to NFT blog)

    • An automated Datatoken Staking and Vesting contract helps with the initial DTs distribution and price stability. Goodbye rug pulls! More info on how it works: (Link to SideStaking blog)

    • 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%. More details here: (Link to blog post on Ocean community monetization)


    • Introduce an advanced Fee Structure both for Market and Provider runners. (add link to fee post/docs when available)

    • 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 ocean.py libraries wrap contracts in JavaScript and Python respectively. They each have quickstart guides.

    🦑 Development and Testing

    Run hardhat in a new terminal:

    export ALCHEMY_URL="https://eth-mainnet.alchemyapi.io/v2/XXXXXXXX"
    npm install
    npx hardhat node

    Open a new terminal to run the tests:

    export ALCHEMY_URL="https://eth-mainnet.alchemyapi.io/v2/XXXXXXXX"
    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

    Known issues


    • when (vestingAmount/vestedBlocks) is a Periodic number, there’s a rounding issue of 1 wei. So if a publisher will call it once per day, over a period of 2 years, you may have a rounding error combined of 730 Weis. That is a neglectable amount.

    🏛 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,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.




    npm i @oceanprotocol/contracts

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