At present’s blockchain API tutorial will spotlight quite a few API examples and exhibit the best way to fetch important blockchain knowledge. As we transfer ahead, we’ll dive into Moralis’ industry-leading Blockchain API – the last word device for blockchain knowledge. It options quite a few endpoints, permitting you to effortlessly get blocks, transactions, logs, occasions, and way more. To present you a bit of sneak peek, right here’s a blockchain API instance of how one can get the contents of a block with a single name to Moralis’ Blockchain API:
const response = await Moralis.EvmApi.block.getBlock({
“chain”: “0x1”,
“blockNumberOrHash”: “15863321”
});
All it’s important to do is configure the chain and blockNumberOrHash parameters to suit your question earlier than calling the endpoint within the instance above. In return, you’ll get a response containing the block’s timestamp, quantity, hash, log bloom, miner, and way more. That is what it might probably appear to be:
{
“timestamp”: “2021-05-07T11:08:35.000Z”,
“quantity”: 12386788,
“hash”: “0x9b559aef7ea858608c2e554246fe4a24287e7aeeb976848df2b9a2531f4b9171”,
“parent_hash”: “0x011d1fc45839de975cc55d758943f9f1d204f80a90eb631f3bf064b80d53e045”,
“nonce”: “0xedeb2d8fd2b2bdec”,
“sha3_uncles”: “0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347”,
“logs_bloom”: “0xdde5fc46c5d8bcbd58207//…”,
“transactions_root”: “0xe4c7bf3aff7ad07f9e80d57f7189f0252592fee6321c2a9bd9b09b6ce0690d27”,
“state_root”: “0x49e3bfe7b618e27fde8fa08884803a8458b502c6534af69873a3cc926a7c724b”,
“receipts_root”: “0x7cf43d7e837284f036cf92c56973f5e27bdd253ca46168fa195a6b07fa719f23”,
“miner”: “0xea674fdde714fd979de3edf0f56aa9716b898ec8”,
“issue”: “7253857437305950”,
“total_difficulty”: “24325637817906576196890”,
“measurement”: “61271”,
“extra_data”: “0x65746865726d696e652d6575726f70652d7765737433”,
“gas_limit”: “14977947”,
“gas_used”: “14964688”,
“transaction_count”: “252”,
“transactions”: {
//…
}
}
And that’s it; when working with Moralis, getting blockchain knowledge doesn’t must be tougher. Nevertheless, if you need a extra detailed tutorial and discover some extra endpoints, learn on! Additionally, if you wish to observe alongside and make comparable calls your self, don’t overlook to enroll with Moralis. You possibly can create an account totally free and instantly unlock the ability of blockchain knowledge!
Overview
In immediately’s tutorial, we’ll kickstart issues by diving straight into the Moralis Blockchain API. In doing so, we’ll briefly discover what this device does and canopy a few of its key advantages. From there, we’ll discover some distinguished use instances and offer you a sensible instance of how one can leverage the Blockchain API in every case. Lastly, to prime issues off, we’ll soar into an in-depth tutorial displaying you the best way to get the contents of a block by its quantity in three simple steps:
Get a Moralis API KeyWrite a Script Calling the getBlock() EndpointExecute the Code
Additionally, for those who’re severe about constructing blockchain initiatives, contemplate trying out some extra Web3 knowledge instruments Moralis affords. For example, discover the Worth API to discover ways to seamlessly get costs of crypto and combine this knowledge into your initiatives!
Nonetheless, with out additional ado, let’s discover Moralis’ industry-leading Blockchain API!
What’s the Moralis Blockchain API?
The Moralis Blockchain API is an industry-leading interface that permits you to seamlessly unlock the ability of uncooked blockchain knowledge with pace and precision. With solely single traces of code, you may effortlessly get blocks, transactions, logs, occasions, and way more with the Blockchain API. As such, when working with the Moralis, it has by no means been simpler to construct Web3 initiatives!
So, what are the options of the Blockchain API?
Get Block Information: Get information on specific blocks – together with timestamps, gasoline used, miners, transactions, and so on. – throughout a number of blockchain networks. Fetch Transactions and Inner Transactions: Seamlessly entry all historic and real-time transactions of an deal with. Question Logs and Occasions: Use the Blockchain API to question logs and occasions of any sensible contract throughout all main EVM chains. Uncooked and Decoded Information: Get each uncooked and decoded knowledge primarily based on contract ABIs.Labels: Efforlessly interpret transactions with enriched knowledge labeling, together with receiver and sender deal with labels. And extra!
Moreover, the Blockchain API is cross-chain suitable. This implies you may question blockchain knowledge throughout all main networks, together with Ethereum, Polygon, BNB Sensible Chain, Arbitrum, and lots of others!
Advantages of the Moralis Blockchain API
Together with many highly effective options, the Blockchain API additionally offers many advantages. Listed below are 4 distinguished examples:
Scalable: Our Blockchain API is constructed for development. Consequently, as your initiatives see elevated adoption, the interface can have no bother delivering at the same time as your consumer base grows.Actual-Time: The Blockchain API is quick, indexes real-time knowledge, and ensures fast entry to the most recent blockchain information. Exact: Information accuracy is crucial when constructing Web3 initiatives, which is why the Blockchain API all the time affords exact and dependable knowledge. Organized: Blockchain knowledge might be messy, and we imagine in digestible and detailed info. As such, our Blockchain API organizes blocks into transfers, transactions, and logs, providing you with a structured strategy to navigate the crypto panorama.
Now, with an outline of our industry-leading Blockchain API, let’s discover a few of its use instances!
Blockchain API Examples and Use Circumstances
The Moralis Blockchain API has many distinguished use instances, and on this part, we’ll take a look at three examples:
Block Explorers: Block explorers are on-line instruments enabling you to seek for real-time and historic knowledge a couple of blockchain. This normally consists of block knowledge, addresses, transactions, and way more. Some distinguished examples of already current block explorers are Etherscan, PolygonScan, and BscScan.
Since explorers permit you to seek for details about a blockchain, you want seamless entry to this knowledge (e.g., transactions, blocks, logs, and so on.) when constructing one. And the simplest strategy to question this information is to make use of the Moralis Blockchain API.
Web3 Wallets: Web3 wallets are software program permitting you to retailer and handle digital belongings, together with fungible and non-fungible tokens. Some examples of distinguished pockets suppliers embody MetaMask and Rainbow.
A standard function of most Web3 wallets is to show every consumer’s pockets exercise. This provides customers an outline of all their trades, which might be helpful in lots of instances. To show this info, you want entry to transaction information and occasions, which is the place our Blockchain API enters the equation.
Decentralized Software (Dapp) Alerts: When constructing dapps, it may be extremely useful to arrange alert techniques to inform customers of necessary occasions. This could, as an example, be alerts for when crypto whales promote a big portion of their holdings.
To arrange alert techniques like this, you want entry to sensible contract occasions and logs, which you’ll effortlessly get with solely single traces of code when working with our Blockchain API.
Nonetheless, that covers three distinguished use instances. Within the following sections, we’ll broaden on this additional by offering examples of the best way to use the Blockchain API to get the data you want with a number of programming languages!
Block Explorers: JavaScript Blockchain API Instance
As talked about above, you want entry to a number of knowledge when constructing a block explorer. With the Moralis Blockchain API, you will get the data you want in a heartbeat!
All it’s important to do is name the getBlock() endpoint whereas passing alongside two parameters: chain and blockNumberOrHash. Right here’s an instance of what it’d appear to be:
const response = await Moralis.EvmApi.block.getBlock({
“chain”: “0x1”,
“blockNumberOrHash”: “15863321”
});
In return for calling the endpoint above, you’ll get a complete response trying one thing like this:
{
“timestamp”: “2021-05-07T11:08:35.000Z”,
“quantity”: 12386788,
“hash”: “0x9b559aef7ea858608c2e554246fe4a24287e7aeeb976848df2b9a2531f4b9171”,
“parent_hash”: “0x011d1fc45839de975cc55d758943f9f1d204f80a90eb631f3bf064b80d53e045”,
“nonce”: “0xedeb2d8fd2b2bdec”,
“sha3_uncles”: “0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347”,
“logs_bloom”: “0xdde5fc46c5d8bcbd58207//…”,
“transactions_root”: “0xe4c7bf3aff7ad07f9e80d57f7189f0252592fee6321c2a9bd9b09b6ce0690d27”,
“state_root”: “0x49e3bfe7b618e27fde8fa08884803a8458b502c6534af69873a3cc926a7c724b”,
“receipts_root”: “0x7cf43d7e837284f036cf92c56973f5e27bdd253ca46168fa195a6b07fa719f23”,
“miner”: “0xea674fdde714fd979de3edf0f56aa9716b898ec8”,
“issue”: “7253857437305950”,
“total_difficulty”: “24325637817906576196890”,
“measurement”: “61271”,
“extra_data”: “0x65746865726d696e652d6575726f70652d7765737433”,
“gas_limit”: “14977947”,
“gas_used”: “14964688”,
“transaction_count”: “252”,
“transactions”: {
//…
}
}
Notice: We used JavaScript for the instance above. Nevertheless, you may as well use a number of different programming languages, together with Python, TypeScript, and so on. To be taught extra about this, take a look at our official get block by block quantity documentation web page.
Web3 Wallets: Python Blockchain API Instance
When constructing a Web3 pockets, you want seamless entry to a consumer’s transaction historical past so you may show this info. With our Blockchain API, you may seamlessly get this knowledge with a single name to the get_wallet_transactions() endpoint whereas passing alongside two parameters: chain and deal with. Right here’s an instance of what it’d appear to be:
params = {
“chain”: “eth”,
“deal with”: “0x1f9090aaE28b8a3dCeaDf281B0F12828e676c326”
}
consequence = evm_api.transaction.get_wallet_transactions(
api_key=api_key,
params=params,
)
In return for calling the get_wallet_transactions() endpoint, you get an array of all inbound and outbound transactions of the offered deal with. That is what the response can appear to be:
{
“page_size”: 100,
“web page”: 0,
“cursor”: “eyJhbGciOiJIUzI1N//…”,
“consequence”: [
{
“hash”: “0x4742fc54f2f6f1121d472ebc6cad6821f9d79407237c36782641d9873832b825”,
“nonce”: “337201”,
“transaction_index”: “149”,
“from_address”: “0x1f9090aae28b8a3dceadf281b0f12828e676c326”,
“from_address_label”: “rsync-builder”,
“to_address”: “0xde2a1a6dd691e56fc225d13ab51d4e05ea148f2f”,
“to_address_label”: null,
“value”: “38602051712948608”,
“gas”: “21000”,
“gas_price”: “13881451241”,
“input”: “0x”,
“receipt_cumulative_gas_used”: “29986680”,
“receipt_gas_used”: “21000”,
“receipt_contract_address”: null,
“receipt_root”: null,
“receipt_status”: “1”,
“block_timestamp”: “2023-10-31T07:44:23.000Z”,
“block_number”: “18468703”,
“block_hash”: “0x2c00ee96af806132e858edc91406843258d234783c39d30313644b46c2af2315”,
“transfer_index”: [
18468703,
149
]
//…
]
Notice: We used Python for this instance. Nevertheless, you may as well use many different languages, together with JavaScript, TypeScript, and so on. Try the official get transactions of deal with documentation to be taught extra.
Dapp Alerts: TypeScript Blockchain API Instance
When constructing dapps, you usually want a straightforward strategy to arrange alerts so you may notify your finish customers of necessary occasions. To take action, you want entry to occasions and logs of sensible contracts.
So, to get the logs of any contract, all you want is a single API name to the getContractLogs() endpoint whereas passing alongside three parameters: deal with, chain, and subject. That is what a request would possibly appear to be:
const response = await Moralis.EvmApi.occasions.getContractLogs({
“chain”: “0x1”,
“topic0”: “0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef”,
“deal with”: “0xb47e3cd837dDF8e4c57F05d70Ab865de6e193BBB”
});
In return for calling the endpoint above, you’ll get a response containing all logs primarily based in your specs. Right here’s an instance of what it’d appear to be:
{
“page_size”: 100,
“web page”: 1,
“cursor”: “eyJhbGciO//…”,
“consequence”: [
{
“transaction_hash”: “0x4abb0d08b5fea482ce708b880c60757635a38203b55fd064148c3f6301206efa”,
“address”: “0xb47e3cd837ddf8e4c57f05d70ab865de6e193bbb”,
“block_timestamp”: “2023-10-31T07:33:35.000Z”,
“block_number”: “18468649”,
“block_hash”: “0x7fd8e733e3a7c03624b9bdcaa058a6be60089093a1d0976db450fb60dbafc0db”,
“data”: “0x0000000000000000000000000000000000000000000000000000000000000001”,
“topic0”: “0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef”,
“topic1”: “0x000000000000000000000000ff36ff458b51dcd034598c56f65a8491427dc572”,
“topic2”: “0x000000000000000000000000e42abe865a7f83f8662e0d602195ade90a569ff0”,
“topic3”: null,
“transaction_index”: 76,
“log_index”: 73
},
//…
]
Notice: We used TypeScript within the instance above. Nevertheless, you will get logs utilizing different programming languages as nicely, together with JavaScript, Python, and others. To be taught extra, take a look at the official get logs for contract documentation.
That’s it for our three examples. Within the subsequent part, we’ll offer you a extra in-depth tutorial on how one can name the varied endpoints of the Blockchain API!
Step-by-Step Blockchain API Tutorial
On this part, we’ll offer you an in-depth tutorial on how one can get block knowledge by its quantity utilizing the Moralis Blockchain API. Due to the accessibility of this industry-leading Web3 growth device, you will get the data you want in three simple steps:
Get a Moralis API KeyWrite a Script Calling the getBlock() EndpointExecute the Code
Nevertheless, earlier than you may name the getBlock() endpoint, you must take care of a number of stipulations!
Conditions
In immediately’s blockchain API instance tutorial, we’ll be utilizing JavaScript. As such, if you wish to observe alongside, ensure you have the next prepared:
Step 1: Get a Moralis API Key
To have the ability to name the Blockchain API and the getBlock() endpoint, you want a Moralis API key. To get an API key, you want a Moralis account. So, for those who haven’t already, click on on the ”Begin for Free” button on the prime proper and arrange your account:
With a Moralis account at hand, head on over to the ”Settings” tab, scroll right down to the ”API Keys” part, and replica your key:
Hold it for now, as you want it within the subsequent part!
Step 2: Write a Script Calling the getBlock() Endpoint
For the second step, begin by establishing a brand new undertaking in your built-in growth surroundings (IDE). From there, open a brand new terminal and run the command beneath within the undertaking’s root folder to put in the Moralis SDK:
npm set up moralis @moralisweb3/common-evm-utils
Subsequent, create a brand new ”index.js” file and add the next code:
const Moralis = require(“moralis”).default;
const { EvmChain } = require(“@moralisweb3/common-evm-utils”);
const runApp = async () => {
await Moralis.begin({
apiKey: “YOUR_API_KEY”,
// …and some other configuration
});
const blockNumberOrHash = “15863321”;
const chain = EvmChain.ETHEREUM;
const response = await Moralis.EvmApi.block.getBlock({
blockNumberOrHash,
chain,
});
console.log(response.toJSON());
};
runApp();
You then want to alter the code barely, and you can begin by changing YOUR_API_KEY with the important thing you copied within the earlier step to initialize Moralis:
Subsequent, configure the blockNumberOrHash and chain constants to suit your question:
We then cross blockNumberOrHash and chain as parameters when calling the getBlock() endpoint:
That’s it; you’re now able to run the code!
Step 3: Execute the Code
For the ultimate step, open a brand new terminal, cd into your undertaking’s root folder, and run the next command:
node index.js
Executing the command above will run the code, and in return, you’ll get a bunch of data associated to the block in query. Some distinguished examples embody a timestamp, log bloom, gasoline used, the miner, an array of transactions, and way more. That is what it’d appear to be:
{
“timestamp”: “2022-10-30T20:39:11.000Z”,
“quantity”: “15863321”,
“hash”: “0x4f5d3bb78f0311301ef282b281d23e178ced236a7ae465820fe6edeba609954a”,
“parent_hash”: “0x27e61d430386d7b4a144bee6e120a57010fbdb3cf963ca37e2d20b5452203621”,
“nonce”: “0x0000000000000000”,
“sha3_uncles”: “0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347”,
“logs_bloom”: “0x11e91824051850625f13 …”,
“transactions_root”: “0x1e0b205c9c48af7dfa3f277c8ec2ba403dc4ab63635a18bbfe532097527fb18e”,
“state_root”: “0xcb1df24273693eb33869961233baac112adbdf51e980e5cf8b8aa7084e8063be”,
“receipts_root”: “0x3a3d89417ad3898d47f66155e0e5fdf3e1efde2a6f389e7b051acf729db28617”,
“miner”: “0x388C818CA8B9251b393131C08a736A67ccB19297”,
“issue”: “0”,
“total_difficulty”: “58750003716598360000000”,
“measurement”: “117595”,
“extra_data”: “0x”,
“gas_limit”: “30000000”,
“gas_used”: “19044124”,
“transaction_count”: “156”,
“base_fee_per_gas”: “8175724594”,
“transactions”: [
{
//…
]
}
Congratulations; that’s it for this blockchain API tutorial. You now know the best way to simply get a block’s contents utilizing its quantity!
Additionally, this was only a easy blockchain API instance, and you’ll observe the identical steps (with minor configurations to the code within the second half) to name some other of our API endpoints.
To discover all current endpoints, take a look at the official Moralis Blockchain API documentation web page!
Abstract: Blockchain API Instance and Tutorial
In immediately’s tutorial, we explored the Moralis Blockchain API, which is an industry-leading device for getting and integrating blockchain knowledge into Web3 initiatives, together with transactions, logs, occasions, and so on. This device boasts many distinguished options and helps all main chains, making Moralis clearly stand out because the premier possibility among the many finest blockchain API suppliers within the enterprise!
Along with exploring the Blockchain API, we additionally confirmed you the best way to use this device to get the content material of a block by its quantity in three simple steps:
Get a Moralis API KeyWrite a Script Calling the getBlock() EndpointExecute the Code
As such, if in case you have adopted alongside this far, you now have the abilities to fetch knowledge, equivalent to blocks, occasions, logs, and way more, with Moralis’ Blockchain API!
In the event you favored this Blockchain API tutorial, contemplate studying extra guides right here on the weblog. For example, discover the intricacies of meta transactions, examine EIP-4844, or discover ways to arrange notifications for NFT gross sales. Additionally, don’t overlook to enroll with Moralis. You possibly can create an account totally free, and also you’ll get fast entry to all industry-leading instruments, together with the Blockchain API!
