eth_getBlockByNumber - Sonic

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

This method returns information about a block by its number. The second parameter controls whether full transaction objects or only transaction hashes are returned.

Parameters

Parameter	Type	Required	Description
blockParameter	string	Yes	Block number in hex, or "latest", "earliest", "pending"
fullTransactions	boolean	Yes	true for full transaction objects, false for hashes only

Request

cURL

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_getBlockByNumber",
    "params": ["0x1e8480", false],
    "id": "getblock.io"
}'

Axios

example.js

const axios = require('axios');

const response = await axios.post('https://go.getblock.io/<ACCESS-TOKEN>/', {
    jsonrpc: '2.0',
    method: 'eth_getBlockByNumber',
    params: ["0x1e8480", false],
    id: 'getblock.io'
}, {
    headers: { 'Content-Type': 'application/json' }
});

console.log(response.data.result);

Request

example.py

import requests

response = requests.post(
    'https://go.getblock.io/<ACCESS-TOKEN>/',
    headers={'Content-Type': 'application/json'},
    json={
        'jsonrpc': '2.0',
        'method': 'eth_getBlockByNumber',
        'params': ["0x1e8480", false],
        'id': 'getblock.io'
    }
)

print(response.json())

Rust

example.rs

use reqwest::Client;
use serde_json::{json, Value};

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

    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&json!({
            "jsonrpc": "2.0",
            "method": "eth_getBlockByNumber",
            "params": ["0x1e8480", false],
            "id": "getblock.io"
        }))
        .send()
        .await?
        .json::<Value>()
        .await?;

    println!("Result: {}", response["result"]);
    Ok(())
}

Response

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": {
        "number": "0x1e8480",
        "hash": "0x8e3f5b2a9c1d4e7f0a6b3c8d5e2f9a1b4c7d0e3f6a9b2c5d8e1f4a7b0c3d6e9f",
        "parentHash": "0x7d2c690aed07954c3862f6600a7e9e63d0474412a9c1d4e7f0a6b3c8d5e2f9a1b",
        "timestamp": "0x66f5a2c0",
        "gasLimit": "0x1c9c380",
        "gasUsed": "0xb3f7a",
        "baseFeePerGas": "0x3b9aca00",
        "miner": "0x0000000000000000000000000000000000000000",
        "size": "0x2a1f",
        "transactions": [
            "0x4a7b0c3d6e9f2a5b8c1d4e7f0a3b6c9d2e5f8a1b4c7d0e3f6a9b2c5d8e1f4a7b"
        ]
    }
}

Response Parameters

Parameter	Type	Description
jsonrpc	string	JSON-RPC protocol version ("2.0")
id	string	Request identifier matching the request
result	object	Block object, or null if the block does not exist

Result Object

Field	Type	Description
number	string	Block number, hex-encoded
hash	string	Block hash
parentHash	string	Hash of the parent block
timestamp	string	Unix timestamp of the block, hex-encoded
gasUsed	string	Total gas used by the block
baseFeePerGas	string	Base fee per gas of the block
transactions	array	Transaction hashes, or full objects when requested

Use Cases

• Block Explorers: Render block metadata and its transaction list

• Chain Indexing: Stream blocks by number into an off-chain store

• Timestamp Mapping: Read a block's timestamp for time-based logic

• Fee Analysis: Read base fee and gas used per block

Error Handling

Error Code	Message	Description
-32602	Invalid params	The block number or hash is malformed or out of range
-32603	Internal error	The node failed to read the block

Web3 Integration

Ethers.js

ethers-example.js

const { ethers } = require('ethers');

const provider = new ethers.JsonRpcProvider('https://go.getblock.io/<ACCESS-TOKEN>/');

const block = await provider.getBlock(2000000);
console.log(block);

Viem

viem-example.js

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

const client = createPublicClient({ chain: sonic, transport: http('https://go.getblock.io/<ACCESS-TOKEN>/') });

const block = await client.getBlock({ blockNumber: 2000000n });
console.log(block);