ethersjs_ethereum_mainnet_block_number_and_wallet_balance.ts

1import { ethers } from "ethers";
2
3// 1. Setup: Connect to the Ethereum Network
4// Using the default provider (connects to multiple backends like Cloudflare, Etherscan, etc.)
5const provider = ethers.getDefaultProvider();
6
7async function main() {
8    // 2. Read from the blockchain
9    const blockNumber = await provider.getBlockNumber();
10    console.log("Current Block Number:", blockNumber);
11
12    // 3. Get the balance of an account (Vitalik Buterin's ENS address used as an example)
13    const balance = await provider.getBalance("vitalik.eth");
14    
15    // 4. Format the balance from Wei to Ether
16    console.log("Balance of vitalik.eth:", ethers.formatEther(balance), "ETH");
17}
18
19main().catch((error) => {
20    console.error("Error:", error);
21});