Hardhat으로 컨트랙트 배포하기

mkdir stablenet-hardhat && cd stablenet-hardhat
npm init -y
npm install --save-dev hardhat @nomicfoundation/hardhat-toolbox dotenv
npx hardhat init

echo "PRIVATE_KEY=0xYourPrivateKey" > .env
echo ".env" >> .gitignore

require("@nomicfoundation/hardhat-toolbox");
require("dotenv").config();

module.exports = {
  solidity: {
    version: "0.8.20",
    settings: {
      // StableNet은 blob 옵코드를 지원하지 않습니다 — cancun 사용 금지
      evmVersion: "shanghai",
    },
  },
  networks: {
    stablenet_testnet: {
      url: "https://api.test.stablenet.network",
      chainId: 8283,
      accounts: [process.env.PRIVATE_KEY],
    },
  },
};

rm contracts/Lock.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

interface IERC20 {
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint256);
}

/// @title WKRCPayment
/// @notice 승인된 발신자로부터 WKRC 결제를 수락합니다.
contract WKRCPayment {
    /// @dev NativeCoinAdapter (WKRC) — StableNet 고정 시스템 컨트랙트 주소.
    IERC20 public constant WKRC =
        IERC20(0x0000000000000000000000000000000000001000);

    event Payment(address indexed from, address indexed to, uint256 amount);

    /// @notice msg.sender로부터 `amount`의 WKRC를 당겨와 `to`에 전송합니다.
    ///         사전에 WKRC.approve(address(this), amount)를 호출해야 합니다.
    function pay(address to, uint256 amount) external {
        require(WKRC.transferFrom(msg.sender, to, amount), "WKRC transfer failed");
        emit Payment(msg.sender, to, amount);
    }

    function allowanceOf(address owner) external view returns (uint256) {
        return WKRC.allowance(owner, address(this));
    }
}

npx hardhat compile

Compiled 1 Solidity file successfully (evm target: shanghai).

const { ethers } = require("hardhat");

async function main() {
  const [deployer] = await ethers.getSigners();
  console.log("Deploying with:", deployer.address);

  const WKRCPayment = await ethers.getContractFactory("WKRCPayment");

  // StableNet은 모든 트랜잭션에 maxPriorityFeePerGas가 필요합니다
  const contract = await WKRCPayment.deploy({
    maxPriorityFeePerGas: ethers.parseUnits("27600", "gwei"),
    maxFeePerGas: ethers.parseUnits("80000", "gwei"),
  });

  await contract.waitForDeployment();
  console.log("WKRCPayment deployed to:", await contract.getAddress());
}

main().catch((error) => {
  console.error(error);
  process.exitCode = 1;
});

npx hardhat run scripts/deploy.js --network stablenet_testnet

Deploying with: 0xYourWalletAddress
WKRCPayment deployed to: 0xABC...