# getblockhash - Litecoin

This method returns hash of block in best-block-chain at height provided.

### Parameters

| Parameter | Type         | Description       |
| --------- | ------------ | ----------------- |
| height    | number (int) | The height index. |

### Request

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

```bash
curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "getblockhash",
    "params": [2750000],
    "id": "getblock.io"
}'
```

{% endcode %}
{% endtab %}

{% tab title="Axios (JavaScript)" %}
{% code title="axios.js" %}

```javascript
import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "getblockhash",
    "params": [2750000],
    "id": "getblock.io"
});

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

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

{% endcode %}
{% endtab %}

{% tab title="Python (requests)" %}
{% code title="request.py" %}

```python
import requests
import json

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

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "getblockhash",
    "params": [2750000],
    "id": "getblock.io"
})

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

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

{% endcode %}
{% endtab %}

{% tab title="Rust (reqwest)" %}
{% code title="main.rs" %}

```rust
use reqwest::header;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = reqwest::Client::new();
    
    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header(header::CONTENT_TYPE, "application/json")
        .body(r#"{
            "jsonrpc": "2.0",
            "method": "getblockhash",
            "params": [2750000],
            "id": "getblock.io"
        }"#)
        .send()
        .await?;
    
    println!("{}", response.text().await?);
    Ok(())
}
```

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

### Response

```json
{
    "result": "2b27dd39d0d380791408561a3f11c45b191ce11f88940128702861409c902168",
    "error": null,
    "id": "getblock.io"
}
```

### Response Parameters

| Field  | Type   | Description                                                          |
| ------ | ------ | -------------------------------------------------------------------- |
| result | string | The hash of the block at the given height (64 character hex string). |

### Use Case

The `getblockhash` method is essential for:

* Converting block height to hash
* Sequential block scanning
* Historical data retrieval
* Block indexing operations
* Chain traversal by height

### Error Handling

| Status Code | Error Message             | Cause                                |
| ----------- | ------------------------- | ------------------------------------ |
| 403         | Forbidden                 | Missing or invalid ACCESS-TOKEN.     |
| -8          | Block height out of range | Height exceeds current chain height. |

### Integration Notes

The `getblockhash` method helps developers:

* Navigate the blockchain by height
* Build block height indexes
* Retrieve historical blocks
* Implement block scanners
* Create height-based queries


---

# 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/litecoin/getblockhash-litecoin.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.