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Example Implementations

A hardhat repo that is a collection of Solidity contract examples that integrate with or demonstrate the use of Toucan's contracts and infrastructure. Some of these may be used in production and we'll provide links to their prod repos below.

OffsetHelper

The OffsetHelper contract implements helper functions that simplify the carbon offsetting (retirement) process. It's production version (with actualized related documentation) which is actively maintained can be found here. You can still use the version found in this repo as an example for inspiration purposes.

Development

Preqrequisites

  1. Install the required packages: 
    yarn
  2. Copy .env.example to .env and modify values of the required environment variables:
    1. POLYGON_URL/MUMBAI_URL to specify custom RPC endpoints for Polygon Mainnet, respectively, the Mumbai Testnet.
    2. PRIVATE_KEY and POLYGONSCAN_KEY in order to deploy contract and publish source code on polygonscan.

Commands

Use the following commands to compile, test and deploy the contracts:

yarn compile
yarn test      # test using a polygon fork
yarn coverage  # test using a polygon fork with coverage report
yarn deploy

Documentation can be auto-generated from the contract's natspec in ./docs/ using

yarn doc

Deploy the contract locally with:

yarn hardhat --network hardhat deployOffsetHelper --verify false