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.

Tutorial

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

  • 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

Oct 24, 2024
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Tutorial

Sending Transactions and Interacting with Smart Contracts Using Infura and Ethers.js

  • Node.js installed on your machine.
  • A basic understanding of JavaScript and blockchain concepts.
  • An Ethereum wallet with some test ETH (using testnets like Goerli or Ropsten is recommended for testing).
  • An Infura Project ID to access the Ethereum network.

If you don't have an Infura account yet, follow these steps:

Oct 24, 2024
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Tutorial

Understanding and Using the Etherscan API to Query Blockchain Data 

https://api.etherscan.io/api?module=proxy&action=eth_getTransactionByHash&txhash=0xYourTransactionHash&apikey=YOUR_ETHERSCAN_API_KEY

You can also query ERC-20 token balances for a given address using the Etherscan API.

Oct 24, 2024
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