Blockchain Development Tutorials, Guides & Insights

Once you have written the script, run it from your terminal:

node etherscanBalance.js

Now, let's create a script to query the balance of an Ethereum wallet. This script will work with both Infura and public nodes.

const ethers = require('ethers');

// Replace this with your Ethereum wallet's private key or mnemonic phrase
const privateKey = 'YOUR_PRIVATE_KEY_OR_MNEMONIC';

// Replace this with your Infura Project ID
const infuraProvider = new ethers.JsonRpcProvider('https://mainnet.infura.io/v3/YOUR_INFURA_PROJECT_ID');

// Create a wallet instance using your private key and connect it to the Infura provider
const wallet = new ethers.Wallet(privateKey, infuraProvider);

// Function to get the balance of the wallet
async function getWalletBalance() {
    // Get the wallet's balance in wei
    const balanceInWei = await wallet.getBalance();

    // Convert the balance from wei to Ether for readability
    const balanceInEther = ethers.utils.formatEther(balanceInWei);

    // Log the results
    console.log(`Wallet Address: ${wallet.address}`);
    console.log(`Wallet Balance: ${balanceInEther} ETH`);
}

// Execute the function
getWalletBalance();

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Next, you need to compile your contract to ensure there are no errors.

• Run the following command in your terminal:

• Optimization: Gnosis Safe optimized their contract by minimizing storage writes and using efficient data structures like mappings and structs.
• Impact: These optimizations reduced the gas cost for executing multi-signature transactions, making the platform more accessible.

Understanding gas and optimizing its consumption in smart contracts is crucial for developing cost-effective and efficient decentralized applications. By implementing strategies such as minimizing storage writes, using view and pure functions, optimizing loops, and leveraging efficient data structures, you can significantly reduce the gas costs associated with your smart contracts.