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Etherscan Api Development Tutorials, Guides & Insights

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Tutorial

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

To follow along with this tutorial, you’ll need:

  • Node.js installed on your machine.
  • A basic understanding of JavaScript.
  • An Etherscan API key (explained below).
  • Familiarity with Ethers.js for blockchain interaction.

Oct 24, 2024
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Tutorial

Understanding and Using the Etherscan API to Query Blockchain Data 

   https://api.etherscan.io/api?module=account&action=tokentx&address=0xYourEthereumAddress&startblock=0&endblock=99999999&sort=asc&apikey=YOUR_API_KEY
   https://api.etherscan.io/api?module=proxy&action=eth_gasPrice&apikey=YOUR_API_KEY

Oct 24, 2024
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Tutorial
javascript nodejs

Tracking Newly Created Tokens on Ethereum

  • Etherscan API: We use the tokentx action from Etherscan's API to fetch token transfer events. The API returns a list of token transactions, including newly created tokens.
  • Filter for New Tokens: We filter transactions where the from address is 0x0000000000000000000000000000000000000000, indicating a token creation event. This address is used as a placeholder for the "zero address" in token contracts.
  • Display Information: We log the name, symbol, and contract address of each newly created token.

Step 4: Monitor for New Tokens

Aug 09, 2024
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