# eth_getSystemTxsByBlockNumber

> For the complete documentation index, see [llms.txt](/docs/llms.txt).

POST https://hyperliquid-mainnet.g.alchemy.com/v2/{apiKey}

Returns the system transactions for a block identified by number or tag. System transactions originate from HyperCore and are sent from the system address 0x2222222222222222222222222222222222222222.

Reference: https://www.alchemy.com/docs/chains/hyperliquid/hyperliquid-api-endpoints/eth-get-system-txs-by-block-number

## Parameters

| Name | Type | Required | Description |
|------|------|----------|-------------|
| blockNumber | string | Yes | A hex-encoded block number, or a block tag such as "latest", "earliest", or "pending". |

## Result

**transactions** (object[]): An array of system transaction objects for the specified block.

## Code Examples

### cURL

```bash
curl --request POST \
  --url https://hyperliquid-mainnet.g.alchemy.com/v2/docs-demo \
  --header 'Content-Type: application/json' \
  --data '{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_getSystemTxsByBlockNumber",
  "params": [
    "string"
  ]
}'
```

### JavaScript

```javascript
const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    jsonrpc: '2.0',
    id: 1,
    method: 'eth_getSystemTxsByBlockNumber',
    params: ['string']
  })
};

fetch('https://hyperliquid-mainnet.g.alchemy.com/v2/docs-demo', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));
```

### Python

```python
import requests

url = "https://hyperliquid-mainnet.g.alchemy.com/v2/docs-demo"

payload = {
    "jsonrpc": "2.0",
    "id": 1,
    "method": "eth_getSystemTxsByBlockNumber",
    "params": ["string"]
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)
```

### Go

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://hyperliquid-mainnet.g.alchemy.com/v2/docs-demo"

	payload := strings.NewReader("{\n  \"jsonrpc\": \"2.0\",\n  \"id\": 1,\n  \"method\": \"eth_getSystemTxsByBlockNumber\",\n  \"params\": [\n    \"string\"\n  ]\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}
```

### Java

```java
HttpResponse<String> response = Unirest.post("https://hyperliquid-mainnet.g.alchemy.com/v2/docs-demo")
  .header("Content-Type", "application/json")
  .body("{\n  \"jsonrpc\": \"2.0\",\n  \"id\": 1,\n  \"method\": \"eth_getSystemTxsByBlockNumber\",\n  \"params\": [\n    \"string\"\n  ]\n}")
  .asString();
```

### C#

```csharp
using RestSharp;


var options = new RestClientOptions("https://hyperliquid-mainnet.g.alchemy.com/v2/docs-demo");
var client = new RestClient(options);
var request = new RestRequest("");
request.AddJsonBody("{\n  \"jsonrpc\": \"2.0\",\n  \"id\": 1,\n  \"method\": \"eth_getSystemTxsByBlockNumber\",\n  \"params\": [\n    \"string\"\n  ]\n}", false);
var response = await client.PostAsync(request);

Console.WriteLine("{0}", response.Content);

```


## OpenRPC Method Specification

```yaml
name: eth_getSystemTxsByBlockNumber
summary: Get system transactions by block number
description: Returns the system transactions for a block identified by number or tag. System transactions originate from HyperCore and are sent from the system address 0x2222222222222222222222222222222222222222.
params:
  - name: blockNumber
    required: true
    description: A hex-encoded block number, or a block tag such as "latest", "earliest", or "pending".
    schema:
      type: string
result:
  name: transactions
  description: An array of system transaction objects for the specified block.
  schema:
    type: array
    example:
      - type: '0x0'
        chainId: '0x3e7'
        nonce: '0x13dc1'
        gasPrice: '0x0'
        gas: '0x7530'
        to: '0xad920cd7046c3e3c5b562bbf61c60d7a0b5d85cf'
        value: '0x17b9197d69c5f000'
        input: 0x
        r: '0x0'
        s: '0x0'
        v: '0x7f1'
        hash: '0xf3d9ae18ef900e6d9ca67efedf867c35146d4b8c2d74309f95a9f05710a2e2af'
        blockHash: '0x23e7f7021161099d6566d187802a0ebf83d958852c74d629341a4209b615e38b'
        blockNumber: '0x1e8480'
        transactionIndex: '0x0'
        from: '0x2222222222222222222222222222222222222222'
    items:
      type: object
```