// Initialize Infura provider
const provider = new ethers.providers.JsonRpcProvider(
  "https://mainnet.infura.io/v3/YOUR_API_KEY"
);

// Get the latest block
const block = await provider.getBlock("latest");
console.log("Block number:", block.number);

// Get ETH balance
const balance = await provider.getBalance(address);
console.log("Balance:", ethers.utils.formatEther(balance));

// Send a transaction
const tx = await wallet.sendTransaction({
  to: receiver,
  value: ethers.utils.parseEther("0.1")
});