1. Install dependencies:

npm install

2. Create an .env file:

cp template.env .env

3. Add wallet private key to .env file (template.env contains dummy private keys by default).

npm test

Deploy all contracts on networkName:

npm run deploy:{networkName}:all

Deploy a contractName on networkName:

npm run deploy:{networkName}:{contractName}

networkName is one of:

• polygon
• mumbai (Polygon testnet)
• rinkeby (Ethereum testnet)

To redeploy a contract that hasn't changed, delete it's deployment file under deployments/{networkName}/ and run npm run deploy:{networkName}:{contractName} again.

To get a deployed contract's address, ABI, etc, check deployments/{networkName}/{contractName}.json.

1. Sign up for an account at https://etherscan.com and/or https://polygonscan.com
2. Go to https://polygonscan.com/myapikey and/or https://polygonscan.com/myapikey to generate your API keys.
3. Set API_KEY_ETHERSCAN and API_KEY_POLYGONSCAN in the .env file to the API keys generated in step 2.

This will verify all deployed contracts for the specified network. You can check which ones have been deployed from the .json files in the deployments/{networkName}/ folder.

npm run verify:{networkName}

networkName is one of:

• polygon
• mumbai (Polygon testnet)
• rinkeby (Ethereum testnet)

• Create a new branch
• Make your changes in the branch (contracts + corresponding tests)
• Open up a pull request and get confirmation that the changes are good to go
• Deploy any contracts (see Deployment) and commit the generated artifacts. Any other services that rely on these contracts should use these artifacts.
• Get PR approved & merged
• Verify contracts (see Verification)

git clone https://github.com/poanetwork/solidity-flattener.git
cd solidity-flattener
npm install

cp -r contracts solidity-flattener/contracts
cp node_modules/@openzeppelin solidity-flattener/contracts/@openzeppelin

cd solidity-flattener
npm start contract/contract.sol

2. Open Contract on Polygonscan/rinkeby.etherscan.io , click Contract -> Verify and Publish
3. Compiler type: Solidity (single file)
4. Compiler version: 0.8.9
5. License MIT
6. Optimization -> Yes
7. Paste flattened solidity code
8. Get ABI encoded constructor params
   • https://abi.hashex.org/, Put contract ABI there
   • Add constructor params (for empty values add some value and remove it so its empty)
9. Verify and publish