How to Get Blockchain Data

Are you in search of the best approach to get blockchain knowledge? If that’s the case, you might be precisely the place it is advisable be! On this tutorial, we’ll present you methods to question blockchain knowledge with Moralis utilizing the next:

Web3 Knowledge APIs from MoralisThe Moralis Streams API

You may get a fast overview of those utility programming interfaces within the following two subsections as we discover their most outstanding options!

Web3 Knowledge API Options 

The Moralis Web3 Knowledge API is a set of extremely scalable programming interfaces fixing widespread blockchain challenges. By indexing all central elements of blockchain knowledge, Moralis supplies a considerably extra accessible developer expertise, regardless of your knowledge wants. By way of a set of data-focused API endpoints, you may simply get and perceive blockchain knowledge! 

Listed below are 5 normal options of the Web3 Knowledge APIs from Moralis:

Token Knowledge – By the Web3 Knowledge APIs, you may seamlessly entry real-time possession, switch, and worth knowledge. NFT Knowledge – Question real-time NFT metadata, possession knowledge, token costs, and far more. Block Knowledge – Get the blockchain knowledge of any block, together with transactions, occasions, logs, and extra.DeFi Knowledge – Question out-of-the-box liquidity reserve and pair knowledge over a number of blockchain networks effortlessly. Transaction Knowledge – Get person transaction blockchain knowledge with ease. To focus on the accessibility of the Web3 Knowledge APIs, right here is an instance of methods to use the getWalletTransactions endpoint:const response = await Moralis.EvmApi.transaction.getWalletTransactions({
handle,
chain,
});

Moralis Streams API Options 

The Moralis Web3 Streams API permits you to take heed to real-time, on-chain occasions effortlessly. All it is advisable do is ready up your individual stream to funnel blockchain knowledge into your utility’s backend by way of webhooks. Yow will discover 5 outstanding Moralis Streams API options right here:

Hearken to contract or pockets occasions or each with a number of streams. Monitor one or tens of millions of addresses with only a single stream. Hearken to occasions from all contract addresses. Get blockchain occasions knowledge streamed into purposes’ backends in actual time.Totally customise streams utilizing filters to obtain webhooks for specific occasions. 

Right here is an instance of what a stream for monitoring incoming and outgoing transactions of a pockets can appear like:

import Moralis from ‘moralis’;
import { EvmChain } from “@moralisweb3/common-evm-utils”;

Moralis.begin({
apiKey: ‘YOUR_API_KEY’,
});

const stream = {
chains: [EvmChain.ETHEREUM, EvmChain.POLYGON], // checklist of blockchains to observe
description: “monitor Bobs pockets”, // your description
tag: “bob”, // give it a tag
webhookUrl: “https://YOUR_WEBHOOK_URL”, // webhook url to obtain occasions,
includeNativeTxs: true
}

const newStream = await Moralis.Streams.add(stream);
const { id } = newStream.toJSON(); // { id: ‘YOUR_STREAM_ID’, …newStream }

// Now we connect bobs handle to the stream
const handle = “0x68b3f12d6e8d85a8d3dbbc15bba9dc5103b888a4”;

await Moralis.Streams.addAddress({ handle, id });

If you wish to entry the Moralis Streams and Web3 Knowledge APIs, keep in mind to enroll with Moralis now! Creating an account is free, and you’ll instantly leverage the total energy of blockchain expertise to construct smarter and extra effectively! 

Overview 

In at this time’s article, we’ll illustrate methods to get blockchain knowledge utilizing the Moralis Web3 Knowledge APIs and Moralis Streams API. If this sounds thrilling and you might be wanting to get going, you may leap straight into the tutorial part by clicking right here! 

Together with two complete tutorials on methods to get blockchain knowledge, the article additionally takes a deep dive into the intricacies of on-chain knowledge. So, in case you are unfamiliar with what it entails, we suggest beginning within the ”Exploring Blockchain Knowledge” part additional down! 

Keep in mind to enroll with Moralis if you wish to observe alongside on this article. A free account offers rapid entry to the Streams API, Web3 Knowledge APIs, and far more. Create your account now to leverage the total potential of the blockchain business!

How you can Get Blockchain Knowledge 

Within the coming sections, you’ll discover ways to question blockchain knowledge utilizing Moralis in two alternative ways. Let’s check out these in additional element earlier than we kick issues off.

Moralis Web3 Knowledge APIs – To start with, we’ll train you methods to construct an utility for fetching the transaction knowledge of a block primarily based on its quantity. In doing so, you’ll familiarize your self with the Moralis Web3 Knowledge APIs. Moralis Streams API – For the second demo, we illustrate methods to arrange a stream for monitoring native transactions of a particular pockets utilizing the Streams API. 

So, with out additional ado, let’s leap straight into the previous and discover how the Moralis Web3 Knowledge APIs work!

Get Blockchain Knowledge with the Web3 Knowledge API

To kickstart this tutorial, we’ll present you methods to get blockchain knowledge utilizing one in all Web3 Knowledge APIs. Extra particularly, you’ll study to create an easy utility permitting you to question blockchain knowledge concerning transactions of a block primarily based on its hash. Yow will discover a print display beneath of what the app seems like: 

As you may see, you solely want so as to add a block quantity, choose a series, and hit the ”Submit” button. In return, you obtain info comparable to a timestamp, the transaction’s ”from” handle, the gasoline worth on the time, the transaction hash, and so forth.:

Creating the Software

Begin by organising a brand new NodeJS venture. From there, go to the GitHub repository down beneath and clone the venture to your native machine:

Get Blockchain Block Knowledge Repository – https://github.com/MoralisWeb3/youtube-tutorials/tree/important/get-content-of-a-block

If you find yourself executed copying the venture to your native listing, it is advisable make a couple of configurations. First, create a brand new file known as ”.env” within the venture’s backend folder. On this file, add a brand new surroundings variable known as MORALIS_API_KEY. It ought to look one thing like this: 

MORALIS_API_KEY = ”replace_me”

You need to exchange replace_me with your individual Moralis API key. So, when you have not already, now could be the time to enroll with Moralis. With an account at hand, you should log in, navigate to the ”Web3 APIs” tab, copy your key, and enter the API key into your code: 

That’s it; you must now have the ability to begin the applying by opening a brand new terminal and executing the next command: 

npm run dev

Doing so begins your app on localhost 3000, and now you can constantly get blockchain knowledge utilizing the getBlock endpoint. For a extra detailed breakdown of the code and the way the getBlock endpoint works, take a look at the next video from the Moralis YouTube channel:

Hearken to Blockchain Knowledge with the Moralis Streams API

On this part, we’ll briefly illustrate how the Moralis Streams API works by displaying you methods to arrange your very personal stream for monitoring the native transactions of a pockets. The walkthrough is split into three steps, and we’ll begin by displaying you methods to create a server!

Step 1: Create a Server

To start with, the very first thing it is advisable do is ready up a server. This server shall be used to obtain webhooks containing the requested blockchain knowledge. As such, go forward and create a NodeJS Categorical utility and add the next contents: 

const categorical = require(“categorical”);
const app = categorical();
const port = 3000;

app.use(categorical.json());

app.put up(“/webhook”, async (req, res) => {

const {physique} = req;

attempt {
console.log(physique);
} catch (e) {
console.log(e);
return res.standing(400).json();
}

return res.standing(200).json();
});

app.pay attention(port, () => {
console.log(‘Listening to streams’)
});

As you may see, the server includes a ”/webhook” endpoint, to which Moralis can put up the streams. What’s extra, the code additionally parses and console logs the physique that Moralis sends. After getting applied the code, you may launch your server with the next terminal enter:

npm run begin

Step 2: Set Up a Webhook URL

For the second step, it is advisable use ngrok to create a tunnel to your port 3000, as that is the place your server is working. You are able to do so by opening a brand new terminal and working the next command:

ngrok http 3000

Executing the command above supplies the next response containing your webhook URL: 

Step 3: Create Your Web3 Stream

Lastly, create one other NodeJS file known as “index.js” and use the next code:

const Moralis = require(“moralis”).default;
const { EvmChain } = require(“@moralisweb3/common-evm-utils”);
require(“dotenv”).config();

Moralis.begin({
apiKey: course of.env.MORALIS_KEY,
});

async operate streams(){

const choices = {
chains: [EvmChain.MUMBAI],
description: “Hearken to Transfers”,
includeConractLogs: false,
includeNativeTxs: true,
webhookURL: “YOUR_WEBHOOK_URL”
}

const newStream = await Moralis.Streams.add(choices)

const {id} = newStream.toJSON();

const handle = “YOUR_WALLET_ADDRESS”;

await Moralis.Streams.addAddress({handle, id})

}

streams()

Within the snippet above, we first add a couple of imports, together with Moralis, EVM utils, and dotenv. Subsequent, we name the Moralis.begin() operate, passing an API key as a parameter to initialize Moralis. Since displaying the API key immediately within the code is a safety danger, it is advisable arrange a ”.env” file with an surroundings variable:

MORALIS_KEY = “replace_me”

Right here, it is advisable exchange replace_me with your individual Moralis API key. To get the important thing, enroll with Moralis, then log in, and navigate to the Web3 APIs tab:

From there, we outline a few choices. This consists of the community you need to take heed to, a stream description, a tag, your webhook URL, and so forth. Subsequent, we create a brand new Moralis stream utilizing the Moralis.Streams.add() operate whereas passing the choices object as an argument. From there, we get the stream ID and add an handle variable. Lastly, we use the Moralis SDK so as to add the handle. 

Keep in mind that you should exchange YOUR_WEBHOOK_URL and YOUR_WALLET_ADDRESS with your individual values.

That’s it! That’s how straightforward it’s to question blockchain knowledge when working with the Moralis Streams API! Nevertheless, if you need a extra complete code breakdown, take a look at the video beneath. On this video, one in all our gifted software program engineers walks you thru the steps above in much more element:

Exploring Blockchain Knowledge

In case you are unfamiliar with the idea of ”blockchain knowledge”, that is in all probability an excellent start line. Within the coming sections, we’ll discover the intricacies of blockchain knowledge and the place this info is saved. So, let’s start and reply the ”what’s blockchain knowledge?” query.

What’s Blockchain Knowledge?

Blockchain knowledge, which can be known as ”on-chain knowledge”, refers back to the publicly accessible info related to transactions which have occurred on a blockchain community. Briefly, it’s all the information from the blocks making up a whole blockchain. What’s extra, with the transparency of those networks, the data is publicly accessible. Consequently, which means that anybody can question blockchain knowledge in the event that they want it! 

The blockchain’s transaction knowledge is constantly recorded when transactions are validated. This document is mostly immutable, which means it’s tough to change the data as soon as it’s validated. Furthermore, this ensures the accuracy and safety of this “digital ledger”, which can be why this knowledge is effective when creating Web3 platforms. Some totally different knowledge sorts can, as an illustration, be pockets addresses, miner charges, switch quantities, sensible contract code, and far more. 

To summarize, on-chain knowledge is publicly accessible info concerning blocks, transactions, and sensible contracts on a blockchain community. That mentioned, the place and the way is that this info truly saved? 

The place is Blockchain Knowledge Saved?

Blockchain knowledge is, in fact, saved on a blockchain community. To make this extra comprehensible, allow us to briefly break down the idea of a blockchain. In essence, a blockchain is a kind of distributed and decentralized ledger that shops, synchronizes, and publicly shares transactions and different blockchain knowledge. 

This knowledge is saved in blocks linked collectively utilizing cryptography and compromise a blockchain, therefore the title. Every block typically consists of two important components: a block header and a block physique. So, let’s break down every of those, beginning with the previous: 

Block Header – The block header shops metadata. This consists of every thing from the block quantity to a timestamp. Block Physique – This half accommodates the block’s transaction knowledge. 

With a greater understanding of how blockchain knowledge is saved, allow us to take the next part to discover the best approach to entry this info! 

Best Strategy to Get Blockchain Knowledge

From a standard perspective, it has been comparatively difficult to question blockchain knowledge. Happily, that is not the case because the Web3 house has advanced, and infrastructure suppliers comparable to Moralis have emerged to facilitate a extra seamless developer expertise. Actually, with the Moralis Web3 Streams API and Web3 Knowledge API, it has by no means been simpler to question blockchain knowledge! 

With the Streams API, you may seamlessly arrange streams to funnel blockchain knowledge immediately into the backend of your Web3 tasks. Additionally, you not want to fret about sustaining and connecting to buggy RPC nodes, constructing pointless abstractions, losing time organising complicated knowledge pipelines, and so forth. As a substitute, you may seamlessly create your individual Web3 streams utilizing the Moralis Streams API to obtain webhooks every time an asset is traded, somebody partakes in a tokens sale, a battle begins in a online game, or some other sensible contract occasions hearth primarily based on filters specified by you. 

Together with organising streams to obtain webhooks primarily based on sensible contract occasions, you may also use the Web3 Knowledge API to seamlessly question blockchain knowledge. Moralis indexes all core elements of on-chain knowledge and supplies easy entry by data-focused API endpoints. As such, it doesn’t matter what Web3 venture you might be constructing; the Web3 Knowledge APIs assist all the information you want. This consists of transactions, NFTs, balances, blocks, and far more! 

Should you discover this attention-grabbing, take a look at the Ethereum worth API and the Binance NFT API.

So, if you wish to get into Web3 improvement, enroll with Moralis proper now to realize rapid entry to all of Moralis’ distinctive options, all totally free! 

Abstract – How you can Get Blockchain Knowledge

In case you have adopted alongside this far, you’ve gotten familiarized your self with the Moralis Streams API and Web3 Knowledge APIs. As such, now you can arrange your individual Web3 stream and use the varied endpoints from Moralis to question blockchain knowledge! 

Should you discovered this text useful, contemplate testing extra content material on the Web3 weblog. For instance, take a look at our NFT sensible contract instance, learn extra about the most effective Ethereum improvement instruments and scaling options for Ethereum, or discover ways to construct a decentralized cryptocurrency alternate. Additionally, make sure that to take a look at our gwei to ETH converter!

Within the aforementioned tutorials, you’ll get to work with wonderful Web3 Knowledge APIs from Moralis, enabling you to leverage the ability of blockchain. So, if you wish to construct Web3 tasks your self, keep in mind to enroll with Moralis!