# eth\_getBlockByHash - Celo

This method gets information about a block by its hash on the Celo network. This method is useful for retrieving specific block data when the block hash is known.

## Parameters

| Parameter        | Type    | Required | Description                                                                     |
| ---------------- | ------- | -------- | ------------------------------------------------------------------------------- |
| blockHash        | string  | Yes      | 32-byte block hash                                                              |
| fullTransactions | boolean | Yes      | If true, returns full transaction objects; if false, returns transaction hashes |

## Request Example

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

```bash
curl -X POST https://go.getblock.io/<ACCESS-TOKEN>/ \
-H "Content-Type: application/json" \
-d '{
  "jsonrpc": "2.0",
  "id": "getblock.io",
  "method": "eth_getBlockByHash",
  "params": [
    "0x4e3a3754410177e6937ef1f84bba68ea139e8d1a2258c5f85db9f1cd715a1bdd",
    false
  ]
}'
```

{% endtab %}

{% tab title="JavaScript (Axios)" %}

```javascript
const axios = require('axios');

const url = 'https://go.getblock.io/<ACCESS-TOKEN>/';

const payload = {
  jsonrpc: '2.0',
  id: 'getblock.io',
  method: 'eth_getBlockByHash',
  params: [
    '0x4e3a3754410177e6937ef1f84bba68ea139e8d1a2258c5f85db9f1cd715a1bdd',
    false
  ]
};

axios.post(url, payload, {
  headers: { 'Content-Type': 'application/json' }
})
.then(response => console.log(response.data))
.catch(error => console.error(error));
```

{% endtab %}

{% tab title="Python" %}
{% code overflow="wrap" %}

```python
import requests
import json

url = "https://go.getblock.io/<ACCESS-TOKEN>/"

payload = {
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "method": "eth_getBlockByHash",
    "params": [
        "0x4e3a3754410177e6937ef1f84bba68ea139e8d1a2258c5f85db9f1cd715a1bdd",
        False
    ]
}

response = requests.post(url, headers={"Content-Type": "application/json"}, json=payload)
print(response.json())
```

{% endcode %}
{% endtab %}

{% tab title="Untitled" %}

{% endtab %}
{% endtabs %}

## Response Example

```json
{
  "jsonrpc": "2.0",
  "id": "getblock.io",
  "result": {
    "number": "0x1d9f2a8",
    "hash": "0x4e3a3754410177e6937ef1f84bba68ea139e8d1a2258c5f85db9f1cd715a1bdd",
    "parentHash": "0xb903239f8543d04b5dc1ba6579132b143087c68db1b2168786408fcbce568238",
    "timestamp": "0x65a1b2c3",
    "gasLimit": "0x1c9c380",
    "gasUsed": "0x5208",
    "transactions": []
  }
}
```

## Response Definition

| Field        | Type   | Description                   |
| ------------ | ------ | ----------------------------- |
| number       | string | Block number                  |
| hash         | string | Block hash                    |
| parentHash   | string | Parent block hash             |
| timestamp    | string | Block timestamp               |
| gasLimit     | string | Maximum gas allowed           |
| gasUsed      | string | Total gas used                |
| transactions | array  | Transaction hashes or objects |

## Use Cases

* Retrieve specific block data by hash
* Verify block existence
* Build block explorers
* Track block confirmations

## Error Handling

| Error Code  | Description                             |
| ----------- | --------------------------------------- |
| -32602      | Invalid params - malformed block hash   |
| -32603      | Internal error - node processing issues |
| null result | Block not found                         |

## SDK Integration

{% tabs %}
{% tab title="Ethers.js" %}
{% code overflow="wrap" %}

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

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

const block = await provider.getBlock('0x4e3a3754410177e6937ef1f84bba68ea139e8d1a2258c5f85db9f1cd715a1bdd');
console.log(block);
```

{% endcode %}
{% endtab %}

{% tab title="ContractKit" %}
{% code overflow="wrap" %}

```javascript
const { newKit } = require('@celo/contractkit');

const kit = newKit('https://go.getblock.io/<ACCESS-TOKEN>/');

const block = await kit.web3.eth.getBlock('0x4e3a3754410177e6937ef1f84bba68ea139e8d1a2258c5f85db9f1cd715a1bdd');
console.log(block);
```

{% endcode %}
{% endtab %}
{% endtabs %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

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

```
GET https://docs.getblock.io/api-reference/celo/eth_getblockbyhash-celo.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.