mkdir teqoin-first-contract
cd teqoin-first-contract
npm init -y
npm install --save-dev hardhat @nomicfoundation/hardhat-toolbox dotenv
npx hardhat init

PRIVATE_KEY=your_private_key_without_quotes

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

module.exports = {
  solidity: '0.8.20',
  networks: {
    teqoin: {
      url: 'https://rpc.teqoin.io',
      chainId: 420377,
      accounts: process.env.PRIVATE_KEY ? [process.env.PRIVATE_KEY] : [],
    },
  },
};

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

contract Counter {
    uint256 public number;

    function increment() external {
        number += 1;
    }
}

npx hardhat compile

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

async function main() {
  const Counter = await ethers.getContractFactory('Counter');
  const counter = await Counter.deploy();

  await counter.waitForDeployment();

  console.log('Counter deployed to:', await counter.getAddress());
}

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

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

cast call YOUR_CONTRACT_ADDRESS "number()(uint256)" --rpc-url https://rpc.teqoin.io