Blockchain Development Tutorials, Guides & Insights

Let’s extend the functionality by querying transaction details for a specific transaction using the Etherscan API.

const axios = require('axios');

// Replace this with your actual Etherscan API key
const apiKey = 'YOUR_ETHERSCAN_API_KEY';

// Replace this with the transaction hash you want to query
const transactionHash = '0xYourTransactionHash';

// Etherscan API URL to fetch transaction details
const url = `https://api.etherscan.io/api?module=proxy&action=eth_getTransactionByHash&txhash=${transactionHash}&apikey=${apiKey}`;

async function getTransactionDetails() {
  try {
    // Make the API request to Etherscan
    const response = await axios.get(url);
    const transactionDetails = response.data.result;

    // Log the transaction details
    console.log('Transaction Details:', transactionDetails);
  } catch (error) {
    console.error('Error fetching transaction details:', error);
  }
}

// Call the function to get the transaction details
getTransactionDetails();

To follow along, you’ll need the following:

• Node.js installed on your machine.
• Basic understanding of JavaScript.
• An Ethereum wallet (with private key or mnemonic phrase).
• (Optional) An Infura account to access the Ethereum network.

Token burns serve several key purposes in the cryptocurrency world:

The "0x000000000000000000000000000000000000dead" address is used as a burn address because it is widely recognized as a destination for token destruction. Since tokens sent to this address are permanently locked and cannot be retrieved, it’s an ideal address for conducting token burns. It is a well-established convention across many blockchain projects.

     touch scripts/deploy.js

• Open deploy.js and add the following code:

• Write your smart contract in Remix IDE, regularly checking the gas estimates.
• Deploy the contract on a test network using Truffle or Hardhat.
• Use Solidity Coverage to generate a gas report and identify optimization opportunities.

Writing gas-efficient smart contracts is a balance between functionality, security, and cost. Here are some best practices to follow: