USDC Deployment Scripts

Usage

To deploy the USDC contract, first create a config.json file in the deploy/config folder, based on the config.example.json file.

Then, run the following command to generate the typings:

npm run build

The command above fetches the USDC contracts' source code and compiles them with Truffle, instead of using the existing Hardhat in the project, to avoid the USDC contract bytecode mismatch issue. This is related to the following issue: Hardhat and Truffle with same compiler options compile different bytecode

After that, create a .env file at the root of the project, based on the .env.example file.

Finally, run the following command to deploy the USDC contract on the QTum testnet:

npm run deploy-qtum-testnet

Advanced Deployment Options

After each contract deployment, the deployed addresses of the contract are saved in the .migrate.storage.json file. So, in the case where deployment stops at the third step, for example, just comment out the already completed transactions and run the following command to continue the migration process:

npx hardhat migrate --network qtumTestnet --from 3 --continue

If you run the command above without the --continue option, it will remove all previous records from the .migrate.storage.json file.

Implementation Notes

1. Typings are generated based on the artifacts that are created after the Truffle compilation process of the stablecoin-evm contracts.
2. qtum-ethers-wrapper is used for contract deployment and interaction, so almost all features of the @solarity/hardhat-migrate are not supported.