DeveloperBreeze

Blockchain Development Programming Tutorials, Guides & Best Practices

Explore 30+ expertly crafted blockchain development tutorials, components, and code examples. Stay productive and build faster with proven implementation strategies and design patterns from 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

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Etherscan vs Infura: Choosing the Right API for Your Blockchain Application

Tutorial October 24, 2024

  • Etherscan: Use to fetch transaction history and display it in your dApp.
  • Infura: Use to allow users to send transactions or interact with smart contracts.

Etherscan and Infura serve different purposes in the Ethereum ecosystem. Etherscan is perfect for applications that need to query blockchain data, while Infura is essential for real-time interaction with the blockchain. By understanding the strengths of each, you can choose the best service for your project, or even combine them to build powerful Ethereum applications.

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