What is the process for retrieving wallet transactions using Alchemy websockets?

I am trying to retrieve all new transactions from a specific wallet using the code provided. However, I am encountering an issue when using the function tx["transaction"]["from"] to filter transactions based on the specified wallet.

I am utilizing Alchemy methods with websockets and have thoroughly reviewed the documentation on how to implement them. There seems to be a missing piece that I am overlooking.

const { Alchemy, Network, AlchemySubscription } = require("alchemy-sdk")
const {ethers, FixedNumber} = require("ethers")
const delay = require('delay')
require("dotenv").config()

const ARBI_WS_KEY = process.env.ARBI_WS_KEY

const settings = {
  apiKey: ARBI_WS_KEY,
  network: Network.ARB_MAINNET,
}

const alchemy = new Alchemy(settings)

// Subscription for Alchemy's minedTransactions API
const add = async () => {
    alchemy.ws.on(
        {
            method: AlchemySubscription.MINED_TRANSACTIONS,
        },
        (tx) => {
            let add0 = String(tx["transaction"]["from"])

            if( add0 == "WALLET"){
                console.log(tx["transaction"]["hash"])
            }
        }
    )
}

The puzzling aspect is that everything functions properly when filtering based on tx["transaction"]["to"], specifying a wallet or contract. But when attempting to use "from" as the filter criterion, no results are returned.

Answer №1

Here is a simple example of retrieving transactions from the blockchain.

The data will need to be sorted accordingly for analysis.

const  WSSURL_ETH= `Infuralink`;
const { ethers } = require("ethers");
var provider = ethers.getDefaultProvider(WSSURL_ETH);
provider.on("block", (blockNumber) => {

    provider.getBlockWithTransactions(blockNumber).then(block => {
        console.log(`Received transactions for block ${blockNumber}`);
        block.transactions.filter(tx => tx.data == '0x').forEach(tx => {
            // process raw transactions
        });
        block.transactions.filter(tx => tx.data != '0x').forEach(tx => {
            // handle token transactions
        });
    });
});

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