Fetching contract deployment transactions with the Chainstack Covalent SDK

const { ChainstackApi } = require('chainstack-covalent-sdk');
const { Web3 } = require('web3');

const web3 = new Web3('CHAINSTACK_ENDPOINT');

const chainstackApi = new ChainstackApi('CHAINSTACK_API_KEY');

const fetchContractDeploymentTransactionsParams = {
  chainName: "chain-network", // ex: base-mainnet
  walletAddress: "0x03d4C4b1B115c068Ef864De2e21E724a758892A2"
};

async function getContractDeploymentDetails(txHash) {
  const txReceipt = await web3.eth.getTransactionReceipt(txHash);
  return txReceipt.contractAddress;
}

async function main() {
  const contractDeploymentTransactions = await chainstackApi.fetchContractDeploymentTransactions(fetchContractDeploymentTransactionsParams);
  for (const transaction of contractDeploymentTransactions) {
    const address = await getContractDeploymentDetails(transaction.tx_hash);
    console.log(`Transaction hash: ${transaction.tx_hash}`);
    console.log(`Contract address: ${address}`);
  }
}

main();

Details for transaction 0x3d7f70bcaeb73ad4ed169f243611fcaebc2a28e083b2889380f17079759e4c11:
Contract Address: 0x7c0f776193acf24fde9d6a78d1918e4b032811b6
Details for transaction 0x8e46b1c1bee7faf0ed02518de2cc19571d042bddb065f58de3dabcc64428d21e:
Contract Address: 0xbb65c9f00af359b04cac6ff5729f1f0fb531bf08
...

const { ChainstackApi } = require('chainstack-covalent-sdk');
const { Web3 } = require('web3');

const web3 = new Web3('CHAINSTACK_ENDPOINT');

const chainstackApi = new ChainstackApi('CHAINSTACK_API_KEY');

const fetchContractDeploymentTransactionsParams = {
  chainName: "chain-network", // ex: base-mainnet
  walletAddress: "0x03d4C4b1B115c068Ef864De2e21E724a758892A2"
};

async function getContractDeploymentDetails(txHash) {
  const txReceipt = await web3.eth.getTransactionReceipt(txHash);
  return txReceipt.contractAddress;
}

async function main() {
  const contractDeploymentTransactions = await chainstackApi.fetchContractDeploymentTransactions(fetchContractDeploymentTransactionsParams);
  for (const transaction of contractDeploymentTransactions) {
    const address = await getContractDeploymentDetails(transaction.tx_hash);
    console.log(`Transaction hash: ${transaction.tx_hash}`);
    console.log(`Contract address: ${address}`);
  }
}

main();

Details for transaction 0x3d7f70bcaeb73ad4ed169f243611fcaebc2a28e083b2889380f17079759e4c11:
Contract Address: 0x7c0f776193acf24fde9d6a78d1918e4b032811b6
Details for transaction 0x8e46b1c1bee7faf0ed02518de2cc19571d042bddb065f58de3dabcc64428d21e:
Contract Address: 0xbb65c9f00af359b04cac6ff5729f1f0fb531bf08
...

Overview

Environment setup

Install node.js in case it’s not yet installed.Create a new directory for your project, then install the web3.js library: npm install web3Additionally, install the Chainstack Covalent SDK: npm install chainstack-covalent-sdk

JavaScript

const { ChainstackApi } = require('chainstack-covalent-sdk');
const { Web3 } = require('web3');

Get your Chainstack API key and endpoint

You’ll need both an endpoint for the blockchain you’d like to query, as well as a Chainstack platform API key for authentication within the Chainstack Covalent SDK.

Retrieve your API key by navigating to your Chainstack account settings, then API keys. Generate a new key, and place that in the ChainstackApi constructor.

Remember you will need to purchase the Chainstack-Covalent integration from the Chainstack Marketplace.

Head over to the Chainstack console and deploy a node for your query chain. Copy the corresponding HTTPS endpoint and paste it into web3.

JavaScript

const web3 = new Web3('CHAINSTACK_ENDPOINT');

const chainstackApi = new ChainstackApi('CHAINSTACK_API_KEY');

Initializing the parameters

To begin, you’ll need to create a variable that holds the parameters of our SDK method call. In this case, you’ll need to define chainName and walletAddress.chainName should be formatted as ‘chain-network’, with chain referring to the name of the blockchain in question, and network referring to the mainnet, testnet, etc. For example, ‘eth-sepolia’, or ‘base-mainnet’walletAddress should be defined as a string containing the address of the wallet you’d like to query the contract deployments of.

JavaScript

const fetchContractDeploymentTransactionsParams = {
  chainName: "chain-network", // ex: base-mainnet
  walletAddress: "0x03d4C4b1B115c068Ef864De2e21E724a758892A2"
};

Creating the handler function

Now, with your parameters defined, we’ll need to create the response handler function to retrieve additional information, such as the address of the deployed contract.This function will leverage the RPC node previously defined to run a getTransactionReceipt request on the provided transaction hash.

JavaScript

async function getContractDeploymentDetails(txHash) {
  const txReceipt = await web3.eth.getTransactionReceipt(txHash);
  return txReceipt.contractAddress;
}

Calling the method and printing the response

Now we’ll need to define the main() function. This function will contain the fetchContractDeploymentTransactions call to the Chainstack Covalent SDK. Within this call, we’ll pass in the parameters defined earlier.This will result in a response containing a list of relevant transactions, in which we’ll then parse through in the for loop. For each transaction, we’ll run it through the handler, getContractDeploymentDetails, then print out the hash & contract address.

JavaScript

async function main() {
  const contractDeploymentTransactions = await chainstackApi.fetchContractDeploymentTransactions(fetchContractDeploymentTransactionsParams);
  for (const transaction of contractDeploymentTransactions) {
    const address = await getContractDeploymentDetails(transaction.tx_hash);
    console.log(`Transaction hash: ${transaction.tx_hash}`);
    console.log(`Contract address: ${address}`);
  }
}

main();

Understanding the response

const { ChainstackApi } = require('chainstack-covalent-sdk');
const { Web3 } = require('web3');

const web3 = new Web3('CHAINSTACK_ENDPOINT');

const chainstackApi = new ChainstackApi('CHAINSTACK_API_KEY');

const fetchContractDeploymentTransactionsParams = {
  chainName: "chain-network", // ex: base-mainnet
  walletAddress: "0x03d4C4b1B115c068Ef864De2e21E724a758892A2"
};

async function getContractDeploymentDetails(txHash) {
  const txReceipt = await web3.eth.getTransactionReceipt(txHash);
  return txReceipt.contractAddress;
}

async function main() {
  const contractDeploymentTransactions = await chainstackApi.fetchContractDeploymentTransactions(fetchContractDeploymentTransactionsParams);
  for (const transaction of contractDeploymentTransactions) {
    const address = await getContractDeploymentDetails(transaction.tx_hash);
    console.log(`Transaction hash: ${transaction.tx_hash}`);
    console.log(`Contract address: ${address}`);
  }
}

main();

Details for transaction 0x3d7f70bcaeb73ad4ed169f243611fcaebc2a28e083b2889380f17079759e4c11:
Contract Address: 0x7c0f776193acf24fde9d6a78d1918e4b032811b6
Details for transaction 0x8e46b1c1bee7faf0ed02518de2cc19571d042bddb065f58de3dabcc64428d21e:
Contract Address: 0xbb65c9f00af359b04cac6ff5729f1f0fb531bf08
...

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