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Etherscan Api Development Tutorials, Guides & Insights

Unlock 3+ expert-curated etherscan api tutorials, real-world code snippets, and modern dev strategies. From fundamentals to advanced topics, boost your etherscan api skills on DeveloperBreeze.

How to Query ERC-20 Token Balances and Transactions Using Ethers.js and Etherscan API

Tutorial October 24, 2024

  • API Key: Replace 'YOUR_ETHERSCAN_API_KEY' with the API key you generated from Etherscan.
  • Wallet Address: Replace '0xYourEthereumAddress' with the wallet address you want to query for token transactions.
  • Token Contract Address: Replace '0xTokenContractAddress' with the contract address of the ERC-20 token you want to track.
node getTokenTransactions.js

Understanding and Using the Etherscan API to Query Blockchain Data

Tutorial October 24, 2024

If everything is set up correctly, you’ll see an output like this:

Wallet Address: 0xYourEthereumAddress
Wallet Balance: 1.234 ETH

Tracking Newly Created Tokens on Ethereum

Tutorial August 09, 2024
javascript nodejs

const Web3 = require('web3');

// Connect to an Ethereum node using Infura
const web3 = new Web3('https://mainnet.infura.io/v3/YOUR_INFURA_PROJECT_ID');

console.log('Connected to Ethereum Mainnet');

Replace YOUR_INFURA_PROJECT_ID with your Infura project ID. You can sign up for a free Infura account and create a project to get the project ID.