# eth\_getBlockByHash - Arbitrum

This method retrieves a full block using its block hash. Optionally includes full transaction objects or just the transaction hashes.

#### Parameters

| Parameter          | Type    | Required | Description                                                                                   |
| ------------------ | ------- | -------- | --------------------------------------------------------------------------------------------- |
| block\_hash        | string  | yes      | The 32-byte block hash to query (0x-prefixed).                                                |
| full\_transactions | boolean | yes      | If **true**, returns full transaction objects. If **false**, returns only transaction hashes. |

#### Request

{% tabs %}
{% tab title="cURL" %}

```bash
curl --location 'https://go.getblock.us/<ACCESS_TOKEN>' \
--header 'Content-Type: application/json' \
--data '{
   "jsonrpc": "2.0",
    "method": "eth_getBlockByHash",
    "params": [
        "0xf5524f0cf99ac6bc5905e95294ebed9007e2d978155f3457118eb7a26d97503a",
        false
    ],
    "id": "getblock.io"
}'
```

{% endtab %}

{% tab title="Axios" %}

```javascript
import axios from 'axios'
let data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "eth_getBlockByHash",
    "params": [
        "0xf5524f0cf99ac6bc5905e95294ebed9007e2d978155f3457118eb7a26d97503a",
        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);
  });

```

{% endtab %}

{% tab title="Request" %}

```python
import requests
import json

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

payload = json.dumps({
   "jsonrpc": "2.0",
    "method": "eth_getBlockByHash",
    "params": [
        "0xf5524f0cf99ac6bc5905e95294ebed9007e2d978155f3457118eb7a26d97503a",
        false
    ],
    "id": "getblock.io"
})
headers = {
  'Content-Type': 'application/json'
}

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

print(response.text)

```

{% endtab %}

{% tab title="Rust" %}

```rs
#[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_getBlockByHash",
    "params": [
        "0xf5524f0cf99ac6bc5905e95294ebed9007e2d978155f3457118eb7a26d97503a",
        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(())
}
```

{% endtab %}
{% endtabs %}

#### Response

```java
{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": {
        "baseFeePerGas": "0x5f5e100",
        "difficulty": "0x1",
        "extraData": "0xe31298ca6df96cb00d355ca9554878c19d39292b6a26eb9fc54b5df482851ef7",
        "gasLimit": "0x4000000000000",
        "gasUsed": "0x229dd8",
        "hash": "0xf5524f0cf99ac6bc5905e95294ebed9007e2d978155f3457118eb7a26d97503a",
        "l1BlockNumber": "0x105e046",
        "logsBloom": "0x00000100000000020000100000000000080000000000000000000000001000001000000000000000000000000101000000000000000000000001010000000000000010000000000000001008000120000100000000001000800100008000000000000000000000000000000000000000021000200000400000000010000000001000000000000000000000000008000000000001000000000008000000000010000000000000000000000000000000000000000000000000000000000000000000008002000048000000000000000000200800000000000010000000000000000000000040000000000000008000000010000000004010400000000000000040",
        "miner": "0xa4b000000000000000000073657175656e636572",
        "mixHash": "0x0000000000012069000000000105e046000000000000000a0000000000000000",
        "nonce": "0x00000000000c7662",
        "number": "0x5206d53",
        "parentHash": "0xb458d44871af788992e51a89661eb28a6539cf9f33c0e9a30d0aab5f2e50e974",
        "receiptsRoot": "0x184ea05480454e4c4fcf6406106a4cb13477af97d45752a126ee84de88695c7c",
        "sendCount": "0x12069",
        "sendRoot": "0xe31298ca6df96cb00d355ca9554878c19d39292b6a26eb9fc54b5df482851ef7",
        "sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
        "size": "0x579",
        "stateRoot": "0xea41be04084dc613cfbf8d1fef75d9a097fad2b222373669e42e2aa173175649",
        "timestamp": "0x644f0242",
        "transactions": [
            "0xaf256a9ce8839489dcaa4f9a2740bcd5865b3db34a15434cce29e6bdcf043bc7",
            "0xfd7e27e19777598be2536bc6e4a5e89cc8a386eca46374333b1fba22641ed255",
            "0x98b2f04b2eb747e685c7db6f97ef2aaca236e146afb310ed039d56ab8599eb0e",
            "0x23c566cf1c2f208a74ef2e585b5bfe7fcffab6445027f06b4207ec43968cf71e",
            "0x9febdfb50d48f1891b6660379dcea3d0060808538a102d589e7ea3b7aa6d787d"
        ],
        "transactionsRoot": "0x22ef4159c9394a555af55a3ae5719bf15c1ff296838dd920f1566eeecb15aa1f",
        "uncles": []
    }
}
```

#### Reponse Parameter Definition

| Field            | Type         | Description                                  |
| ---------------- | ------------ | -------------------------------------------- |
| number           | string (hex) | Block number                                 |
| hash             | string       | Block hash                                   |
| parentHash       | string       | Previous block hash                          |
| nonce            | string       | 64-bit hash used for PoW (Arbitrum always 0) |
| sha3Uncles       | string       | Keccak hash of uncles                        |
| logsBloom        | string       | Bloom filter for logs                        |
| transactionsRoot | string       | Root of transaction trie                     |
| stateRoot        | string       | Root of state trie                           |
| miner            | string       | Validator / proposer address                 |
| difficulty       | string (hex) | Arbitrum always zero                         |
| totalDifficulty  | string (hex) | Always zero                                  |
| size             | string (hex) | Size of the block in bytes                   |
| gasLimit         | string (hex) | Gas limit for the block                      |
| gasUsed          | string (hex) | Gas consumed                                 |
| timestamp        | string (hex) | Unix timestamp                               |
| transactions     | array        | Either full objects or transaction hashes    |
| uncles           | array        | Always empty for Arbitrum                    |

#### Use case

The `eth_getBlockHash` is used to:

* Fetching block details for explorers and dashboards
* Tracking new blocks in real time
* Verifying a transaction’s block inclusion
* Monitoring gas usage per block
* Analyzing contract activity in a specific block
* Auditing validator performance through block metadata

#### 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_getBlockByHash` can help developers:

* Observing full historical block data
* Powering explorers with detailed transaction info
* Displaying block metadata in analytics dashboards
* Reconstructing block timelines for auditing and security tools
* Connecting validator/rollup behavior to specific blocks

{% tabs %}
{% tab title="Ethers.js" %}

```javascript
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_getBlockByHash", [
  "0xf5524f0cf99ac6bc5905e95294ebed9007e2d978155f3457118eb7a26d97503a",
  false,
]);    console.log("The result:", result);
    return result;
  } catch (error) {
    console.error("The error:", error);
    throw error;
  }
}
```

{% endtab %}

{% tab title="Viem" %}

```jsx
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_getBlockByHash',
            params: [ "0xf5524f0cf99ac6bc5905e95294ebed9007e2d978155f3457118eb7a26d97503a",
 false],
        });
        console.log('Result:', result);
        return result;
    } catch (error) {
        console.error('Viem Error:', error);
        throw error;
    }
}

```

{% endtab %}
{% endtabs %}


---

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Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.getblock.io/api-reference/arbitrum-arb/arbitrum_eth_getblockbyhash.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.