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Contract Deployment

Truffle: Deploy ERC20 Contract
Step 1. Enter smart-contract-example/truffle folder
$ cd cronos-smart-contract-example/truffle
Step 2. Run npm install inside the folder
$ npm install
Step 3. Make a copy of .env.example to .env
$ cp .env.example .env
Step 4. Modify .env and fill ONE of the field
MNEMONIC=goose easy ivory ...
PRIVATE_KEY=XXXXXXX
Step 5. Review Migration Script at migrations/2_deploy_cronos_token.js
  const CronosToken = artifacts.require("CronosToken");
  
  module.exports = function (deployer) {
      deployer.deploy(CronosToken, "Cronos Token", "CRT", "1000000000000000000000000");
  };
Step 6. Endpoints setting
By default, the script will be using your local host "127.0.0.1" - If you are not running a localhost, you may leverage the public endpoint https://evm-t3.cronos.org/ by making changes to networks in truffle-config.js, for example:
  networks: {
    development: {
      provider: new HDWalletProvider(getHDWallet(), "http://127.0.0.1:8545"), // TODO
      network_id: "*",       // Any network (default: none)
    },
    testnet: {
      provider: new HDWalletProvider(getHDWallet(), "https://evm-t3.cronos.org/"), // TODO
      network_id: "*",
      skipDryRun: true
    },
  },
Step 7. Deploy Contract
npm run deploy-contract-cronos
Step 8. Obtain Contract address from console and input to Metamask
Correct balance will be shown on Metamask page
Hardhat: Deploy ERC20 Contract
Step 1. Enter smart-contract-example/hardhat folder
$ cd smart-contract-example/hardhat
Step 2. Run npm install inside the folder
$ npm install
Step 3. Make a copy of .env.example to .env
$ cp .env.example .env
Step 4. Modify .env and fill ONE of the field
MNEMONIC=goose easy ivory ...
PRIVATE_KEY=XXXXXXX
Step 5. Review Migration Script at scripts/deploy-cronos-token.js
  async function main() {
      const CronosToken = await hre.ethers.getContractFactory("CronosToken");
      const cronosToken = await CronosToken.deploy("Cronos Token", "CRT", "1000000000000000000000000");
  
      await cronosToken.deployed();
  
      console.log("CronosToken deployed to:", cronosToken.address);
  }
Step 6. Endpoints setting
By default, the script will be using your local host "127.0.0.1" - If you are not running a localhost, you may leverage the public endpoint https://evm-t3.cronos.org/ by making changes to networks in hardhat.config.js, for example:
  networks: {
    development: {
      url: "http://localhost:8545",
      accounts: getHDWallet(),
     },
    testnet: {
      url: "https://evm-t3.cronos.org/",
      accounts: getHDWallet(),
    },
  },
Step 7. Deploy Contract
npm run deploy-contract-cronos
Step 8. Obtain Contract address from console and input to Metamask
Correct balance will be shown on Metamask page
CronosToken deployed to: 0x5F803c894a0A16B46fe5982fB5D89eb334eAF68