# sendrawtransaction - Bitcoin

This method submits a raw transaction (serialized, hex-encoded) to the local node and network.

### Parameters

| Parameter  | Type          | Required | Description                                                        |
| ---------- | ------------- | -------- | ------------------------------------------------------------------ |
| hexstring  | string        | Yes      | The hex string of the raw transaction.                             |
| maxfeerate | number/string | No       | Maximum feerate in BTC/kvB to reject transactions (default: 0.10). |

### Request

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

```bash
curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "signmessage",
    "params": ["DLGbK6mCjBT67r8wjJqCg8hkFiBYV5JquH", "Hello, Dogecoin!"],
    "id": "getblock.io"
}'
```

{% endcode %}
{% endtab %}

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

```javascript
import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "signmessage",
    "params": ["DLGbK6mCjBT67r8wjJqCg8hkFiBYV5JquH", "Hello, Dogecoin!"],
    "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="Request" %}
{% code overflow="wrap" %}

```python
import requests
import json

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

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "signmessage",
    "params": ["DLGbK6mCjBT67r8wjJqCg8hkFiBYV5JquH", "Hello, Dogecoin!"],
    "id": "getblock.io"
})

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

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

{% endcode %}
{% endtab %}

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

```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": "signmessage",
    "params": ["DLGbK6mCjBT67r8wjJqCg8hkFiBYV5JquH", "Hello, Dogecoin!"],
            "id": "getblock.io"
        }"#)
        .send()
        .await?;
    
    println!("{}", response.text().await?);
    Ok(())
}
```

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

### Response

```json
{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": "ee652f0b40209bd02468de0c6336854f5efdd79fb865560aef2c46f4fa0b4a07"
}
```

### Response Parameters

| Field  | Type   | Description                         |
| ------ | ------ | ----------------------------------- |
| result | string | The transaction hash (txid) in hex. |

### Use Case

The `sendrawtransaction` method is essential for:

* Broadcasting signed transactions to the network
* Wallet transaction submission
* Payment gateway implementations
* Automated payment systems
* DeFi protocol integrations
* Exchange withdrawal systems

### Error Handling

| Status Code | Error Message                      | Cause                                       |
| ----------- | ---------------------------------- | ------------------------------------------- |
| 403         | Forbidden                          | Missing or invalid ACCESS-TOKEN.            |
| -22         | TX decode failed                   | The transaction hex is malformed.           |
| -25         | Missing inputs                     | Transaction references non-existent inputs. |
| -26         | Insufficient fee                   | Transaction fee is below minimum relay fee. |
| -26         | TX rejected                        | Transaction violates consensus rules.       |
| -27         | Transaction already in block chain | Transaction was already confirmed.          |

### Integration With Web3

The `sendrawtransaction` method helps developers:

* Build wallet broadcast functionality
* Implement payment processing systems
* Create automated trading bots
* Support bulk transaction submission
* Enable real-time payment applications


---

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```
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```

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