# eth\_sendRawTransaction

### Introduction

The Fast Mode leverages BlockRazor's global high-performance network to achieve the lowest latency for transaction inclusion, making it suitable for users who have extreme requirements for transaction inclusion speed. 

Compared to [Send RawTx](/transaction-submission/fast/bsc/fast-tx.md), transactions in the Fast Mode will not be broadcasting via the mempool, ensuring both speed and privacy. The transaction submission method for Fast Mode is compatible with `eth_sendRawTransaction`.

{% hint style="info" %}
Fast Mode is not tied to the subscription plan, but each transaction sent in Fast Mode must include a tip sent to the address `0x9D70AC39166ca154307a93fa6b595CF7962fe8e5`. The minimum tip amount is the greater of 0.000025 BNB or Transaction Fee \* 5%.
{% endhint %}

### Endpoint

{% tabs %}
{% tab title="General" %}
<http://bsc-fast.blockrazor.io>
{% endtab %}

{% tab title="Geographic" %}

<table><thead><tr><th width="146.0703125">Region</th><th>Domain</th></tr></thead><tbody><tr><td>Frankfurt</td><td>http://frankfurt.bsc-fast.blockrazor.io</td></tr><tr><td>Japan</td><td>http://japan.bsc-fast.blockrazor.io</td></tr><tr><td>Virginia</td><td>http://virginia.bsc-fast.blockrazor.io</td></tr></tbody></table>
{% endtab %}
{% endtabs %}

### Rate Limit

Fast Mode is not tied to the subscription plan, the rate limit default to 10 TPS for all users. Please contact us if you require an increase in your TPS limit.

### Request

```json
curl http://bsc-fast.blockrazor.io \
  -X POST \
  -H "Authorization: Bearer <auth>" \
  -H "Content-Type: application/json" \
  --data '
    {
    "jsonrpc": "2.0",
    "method": "eth_sendRawTransaction",
    "params": [
      "Signed Transaction"
    ],
    "id": 1
  }
  '
```

### Response

**Normal**

```json
{
 "jsonrpc":"2.0",
 "id":"1",
 "result":"0xa06b……f7e8ec"
}‍
```

**Abnormal**

```json
{
  "jsonrpc":"2.0",
  "id":"1",
  "error":{
    "code":-32000,
    "message":"Tip verification failed"
    }
}
```

### Keep Alive <a href="#keep-alive" id="keep-alive"></a>

Please send a POST request to the health check endpoint to keep the connection alive. We recommend sending a request every 10 seconds. Below is a request example:

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

```json
curl -X POST 'http://bsc-fast.blockrazor.io/health' \
-H "Content-Type: application/json" \
-d ""
```

{% endtab %}
{% endtabs %}


---

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