eth_getBlockByNumber - Arbitrum

Example code for the eth_getBlockByNumber JSON RPC method. Сomplete guide on how to use eth_getBlockByNumber JSON RPC in GetBlock Web3 documentation.

This method retrieves a full block by its block number. Supports returning either full transaction objects or only transaction hashes.

Parameters

Parameter

Type

Required

Description

block_number

string

yes

Block number as a hex string (for example "0x10fb78") or special tags: "latest", "earliest", "pending".

full_transactions

boolean

yes

If true, returns full transaction objects. If false, returns only transaction hashes.

Request

curl --location 'https://go.getblock.us/<ACCESS_TOKEN>' \
--header 'Content-Type: application/json' \
--data '{
   "jsonrpc": "2.0",
    "method": "eth_getBlockByNumber",
    "params": [
        "latest",
        false
    ],
    "id": "getblock.io"
}'

import axios from 'axios'
let data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "eth_getBlockByNumber",
    "params": [
        "latest",
        false
    ],
    "id": "getblock.io"
};

let config = {
  method: "post",
  maxBodyLength: Infinity,
  url: "https://go.getblock.us/<ACCESS_TOKEN>",
  headers: {
    "Content-Type": "application/json",
  },
  data: data,
};

axios
  .request(config)
  .then((response) => {
    console.log(JSON.stringify(response.data));
  })
  .catch((error) => {
    console.log(error);
  });

import requests
import json

url = "https://go.getblock.us/<ACESS_TOKEN>"

payload = json.dumps({
   "jsonrpc": "2.0",
    "method": "eth_getBlockByNumber",
    "params": [
        "latest",
        false
    ],
    "id": "getblock.io"
})
headers = {
  'Content-Type': 'application/json'
}

response = requests.request("POST", url, headers=headers, data=payload)

print(response.text)

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = reqwest::Client::builder()
        .build()?;

    let mut headers = reqwest::header::HeaderMap::new();
    headers.insert("Content-Type", "application/json".parse()?);

    let data = r#"{
   "jsonrpc": "2.0",
    "method": "eth_getBlockByNumber",
    "params": [
        "latest",
        false
    ],
    "id": "getblock.io"
}"#;

    let json: serde_json::Value = serde_json::from_str(&data)?;

    let request = client.request(reqwest::Method::POST, "https://go.getblock.us/<ACCESS_TOKEN>")
        .headers(headers)
        .json(&json);

    let response = request.send().await?;
    let body = response.text().await?;

    println!("{}", body);

    Ok(())
}

Response

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": {
        "baseFeePerGas": "0x7cf30f8",
        "difficulty": "0x1",
        "extraData": "0x539464419cc7e1235fba3837a56b348ecb8ae3a3ed2f1c8839012038bbb59e32",
        "gasLimit": "0x4000000000000",
        "gasUsed": "0x1560d7",
        "hash": "0x1d77c0b85c1d0a75c19c94dc05868c936dc6d6b537c1846613e97110c90b3f48",
        "l1BlockNumber": "0x16dd9f1",
        "logsBloom": "0x000100c2000c0008800000044000200000000000000000180000010401000800000408020108000800800000000000000100400108082210006000000028000000000001000200080014040800002004000000040280000008004020000020412000000c0002040000001824000000000000040000000000004000100008000a0020800080004010000001000000000800000000000001000080000000000000020000200001000000000020800000000000080000000000000000080000001000402002000000200000000000010008040082001000882042200200008000080210040000200000000020000000200000000000080040000000000000400400",
        "miner": "0xa4b000000000000000000073657175656e636572",
        "mixHash": "0x0000000000025f6000000000016dd9f100000000000000280000000000000000",
        "nonce": "0x0000000000221739",
        "number": "0x185eef3d",
        "parentHash": "0x9c39e9f3fbc4b716cc974f5bec6766c95d23caf0dd89c97da33bc39656643437",
        "receiptsRoot": "0xb51b31ab3fccbb7423ae394c8d5e2039b55476d9df233e8031bf1c7d5620e489",
        "sendCount": "0x25f60",
        "sendRoot": "0x539464419cc7e1235fba3837a56b348ecb8ae3a3ed2f1c8839012038bbb59e32",
        "sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
        "size": "0xed9",
        "stateRoot": "0x764448b4dcde129e0630c8f010e8a7c6ebcc446ec4cb2c2bea87d8f3ff8d86d8",
        "timestamp": "0x69384f78",
        "transactions": [
            "0xd31a43fdc91c3aaa6b00537d8788b06b28833ea14d237488ac35d5993ed8634c",
            "0xdf1df3a844340e0ae82485f78754818d8d628ac7236b6bcdbe3946c219301a45",
            "0x4c02aa4e537ff54dbfda1b3ef528bd611cfe88225d071fda4fa57a12801a2c88",
            "0x5c4f37fdf581342bb1e0eed9522feb69e988b5270945ce6128d55914b0a76c8f",
            "0x795fdc0ab98a9ec4f651779dfc055677f7a35596dda5292ab966b4c35c935231",
            "0x93e9d4fd77c2a9f34f80b328cbbe0613d943d376277a3758c0023c9e349becaf",
            "0xe05ee8bbc3a0db68529271b76ddcca2e5ac3c52263d57268293c09606d1bcaa6",
            "0x5f9fe747df5850d935f769be1a3e91102cd5ab73750b14b82f7e0afbba7cb30f",
            "0x7ee97b9dfa06eeec0bfac8bdcfb320888092a735174b5b7b15f0d066b6b85ecf",
            "0x8357a5f4721cec2e7d27caa0c0ae909e4db26f0e001888651f6213430e3489fe",
            "0xbc740ac9a94989b232c9445e475eb1cc94c3ed858a869ce0c43029cb9ed9d836",
            "0x89203f417d97ae57eaa1f73f1e08a11a9ffd73936744233555152d37d38cdb6e"
        ],
        "transactionsRoot": "0xacd0886f4df73a6d36dcbe36a854a162d25d2e2b81d6362b174d01582aeae562",
        "uncles": []
    }
}

Reponse Parameter Definition

Field

Type

Description

number

string (hex)

Block number

hash

string

Block hash

parentHash

string

Previous block hash

nonce

string

Always 0 on Arbitrum

sha3Uncles

string

Keccak hash of uncles

logsBloom

string

Bloom filter for logs

transactionsRoot

string

Root of transactions trie

stateRoot

string

Root of state trie

miner

string

Address that proposed the block

difficulty

string

Always zero on Arbitrum

totalDifficulty

string

Always zero

size

string

Block size in bytes

gasLimit

string

Block gas limit

gasUsed

string

Total gas consumed

timestamp

string

Unix timestamp

transactions

array

List of transaction hashes or objects

uncles

array

Always empty

Use case

The eth_getBlockByNumber is used to:

Real-time monitoring of blockchain activity
Fetching the latest block information for dashboards
Analyzing block-level gas usage and activity patterns
Validating the inclusion of transactions within a specific block
Supporting DeFi applications that depend on accurate state timing
Powering NFT explorers and block visualizers

Error handling

Status Code

Error Message

Cause

403

Forbidden

Missing or invalid ACCESS_TOKEN.

-32602

Invalid argument

The block hash isn't accurate or incomplete or full_transaction boolean is missing

Integration with Web3

The eth_getBlockByNumber can help developers:

Stream blocks in real time for analytics
Power live dashboards with block updates
Confirm block finality before executing contracts
Inspect transaction activity between specific blocks
Support trustless frontends that monitor chain state

import { ethers } from "ethers";
const RPC_URL = "https://go.getblock.us/<ACCESS_TOKEN>";
const provider = new ethers.JsonRpcProvider(RPC_URL);
async function Call() {
  try {
     const result = await provider.send("eth_getBlockByNumber", ["latest", false],);    console.log("The result:", result);
    return result;
  } catch (error) {
    console.error("The error:", error);
    throw error;
  }
}

import { createPublicClient, http } from 'viem';
import { arbitrum } from 'viem/chains';

// Create Viem client with GetBlock
const client = createPublicClient({
  chain: arbitrum,
  transport: http('https://go.getblock.us/<ACCESS_TOKEN>'),
});

// Using the method through Viem
async function Call() {
    try {
        // Method-specific Viem implementation
        const result = await client.request({
            method: 'eth_getBlockByNumber',
            params: ["latest", false],
        });
        console.log('Result:', result);
        return result;
    } catch (error) {
        console.error('Viem Error:', error);
        throw error;
    }
}

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