eth_getBlockByHash - Robinhood

Example code for the eth_getBlockByHash JSON-RPC method. Complete guide to using the eth_getBlockByHash JSON-RPC method in GetBlock.io Web3 documentation.

Returns block information by hash. Pass true as the second parameter to include full transaction objects; false to receive only transaction hashes. Robinhood Chain blocks may include an additional l1BlockNumber field indicating the L1 block that included the batch containing this L2 block.

Parameters

Parameter	Type	Required	Description
blockHash	DATA (32 bytes)	Yes	Block hash
fullTransactions	boolean	Yes	true for full transaction objects, false for hashes only

Request Example

cURL

curl --location --request POST 'https://shared.us-east-1.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_getBlockByHash",
    "params": [
        "0x8b5c6f1a9e8d7c6b5a4f3e2d1c0b9a8e7f6d5c4b3a2b1f9e8d7c6b5a4f3e2d1c",
        false
    ],
    "id": "getblock.io"
}'

JavaScript (Axios)

import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "eth_getBlockByHash",
    "params": [
        "0x8b5c6f1a9e8d7c6b5a4f3e2d1c0b9a8e7f6d5c4b3a2b1f9e8d7c6b5a4f3e2d1c",
        false
    ],
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://shared.us-east-1.getblock.io/<ACCESS-TOKEN>/',
    headers: {
        'Content-Type': 'application/json'
    },
    data: data
};

axios(config)
    .then(response => console.log(JSON.stringify(response.data, null, 2)))
    .catch(error => console.log(error));

Python (Requests)

import requests
import json

url = "https://shared.us-east-1.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "eth_getBlockByHash",
    "params": [
        "0x8b5c6f1a9e8d7c6b5a4f3e2d1c0b9a8e7f6d5c4b3a2b1f9e8d7c6b5a4f3e2d1c",
        false
    ],
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)

Rust (Reqwest)

use reqwest::Client;
use serde_json::json;

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

    let payload = json!({
        "jsonrpc": "2.0",
        "method": "eth_getBlockByHash",
        "params": [
                "0x8b5c6f1a9e8d7c6b5a4f3e2d1c0b9a8e7f6d5c4b3a2b1f9e8d7c6b5a4f3e2d1c",
                false
        ],
        "id": "getblock.io"
});

    let response = client
        .post("https://shared.us-east-1.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&payload)
        .send()
        .await?;

    let result: serde_json::Value = response.json().await?;
    println!("{:#?}", result);

    Ok(())
}

Response Example

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": {
        "number": "0x124f80",
        "hash": "0x8b5c6f1a9e8d7c6b5a4f3e2d1c0b9a8e7f6d5c4b3a2b1f9e8d7c6b5a4f3e2d1c",
        "parentHash": "0x47edbdc8da5cd1b3127ea8f1ce5da6739fa39e7e6d2eb1c9b50f1c83de0a98b4",
        "timestamp": "0x68f3b85f",
        "miner": "0xa4b000000000000000000073657175656e636572",
        "gasLimit": "0x1c9c380",
        "gasUsed": "0xe4e1c0",
        "baseFeePerGas": "0x5f5e100",
        "l1BlockNumber": "0x1234567",
        "transactions": [
            "0xa8f9b3c7d2e4f6a1b9c8d7e6f5a4b3c2d1e0f9a8b7c6d5e4f3a2b1c0d9e8f7a6"
        ],
        "difficulty": "0x1",
        "totalDifficulty": "0x1",
        "size": "0x42a",
        "nonce": "0x0000000000000000"
    }
}

Response Parameters

Field	Type	Description
result.number	QUANTITY	Block number
result.hash	DATA	Block hash
result.parentHash	DATA	Parent block hash
result.timestamp	QUANTITY	Unix timestamp of block creation
result.miner	DATA	Address that produced the block (sequencer address on Arbitrum Orbit)
result.gasLimit	QUANTITY	Maximum gas allowed in the block
result.gasUsed	QUANTITY	Total gas used by all transactions
result.baseFeePerGas	QUANTITY	EIP-1559 base fee
result.l1BlockNumber	QUANTITY	Arbitrum-specific: L1 block that included the batch containing this L2 block
result.transactions	array	Transaction hashes (or full objects if requested)

Use Cases

• Block-by-block indexing in explorers

• Verifying that a specific block exists and is canonical

• Tracking L1 anchoring via the l1BlockNumber field

Error Handling

Status Code	Error Message	Cause
403	Forbidden	Missing or invalid <ACCESS-TOKEN>
-32602	Invalid params	Request parameters are missing or malformed
-32603	Internal error	Server-side error while processing the request
429	Too Many Requests	Rate limit exceeded for your plan

SDK Integration

ethers.js

import { ethers } from 'ethers';

const provider = new ethers.JsonRpcProvider('https://shared.us-east-1.getblock.io/<ACCESS-TOKEN>/');

// Generic JSON-RPC call (works for any method):
const result = await provider.send('eth_getBlockByHash', ["0x8b5c6f1a9e8d7c6b5a4f3e2d1c0b9a8e7f6d5c4b3a2b1f9e8d7c6b5a4f3e2d1c", false]);
console.log(result);

// Many standard methods have typed wrappers on ethers Provider,
// e.g. provider.getBalance(addr), provider.getBlock(n), provider.getTransaction(hash).

viem

import { createPublicClient, http } from 'viem';

const client = createPublicClient({
    transport: http('https://shared.us-east-1.getblock.io/<ACCESS-TOKEN>/')
});

// Generic JSON-RPC request (works for any method):
const result = await client.request({
    method: 'eth_getBlockByHash',
    params: ["0x8b5c6f1a9e8d7c6b5a4f3e2d1c0b9a8e7f6d5c4b3a2b1f9e8d7c6b5a4f3e2d1c", false]
});
console.log(result);

// Many standard methods have typed wrappers on PublicClient,
// e.g. client.getBalance({ address }), client.getBlock({ blockNumber }).