> For the complete documentation index, see [llms.txt](https://docs.blockrazor.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.blockrazor.io/tc/streams/node-stream/robinhood-chain/sequencer-feed.md).

# Robinhood Chain Node-required Sequencer Feed

介紹Robinhood Chain Sequencer Feed的benchmark、價格和接入方法

### Benchmark

我們在AWS US East (Ohio)的每一個可用區（use2-az1、use2-az2、use2-az3）通過同一個測試客戶端與Robinhood Chain Sequencer Feed和BlockRazor Sequencer Feed分別建立wss連接，比較從兩者接收區塊的相對延遲。先接收到區塊的Sequencer Feed其相對延遲視為0ms，後接收到區塊的Sequencer Feed其相對延遲等於先後接收區塊的時間戳差值。

获取benchmark测试工具可前往 [GitHub - BlockRazorinc/robinhood-feed-speed](https://github.com/BlockRazorinc/robinhood-feed-speed) 

Benchmark數據如下：

{% tabs %}
{% tab title="use2-az1" %}
快照時間：2026-08-12T10:18:57.825039121Z，测试測試區塊總數：252798

<table><thead><tr><th>Sequencer Feed</th><th width="109.0546875">Win rate</th><th width="101.1484375">P50</th><th width="110.5859375">P90</th><th width="105.84375">P95</th><th width="117.4296875">P99</th></tr></thead><tbody><tr><td>BlockRazor Sequencer Feed</td><td><strong>80.27%</strong></td><td><strong>0.000 ms</strong></td><td><strong>0.000 ms</strong></td><td><strong>2.771 ms</strong></td><td><strong>6.116 ms</strong></td></tr><tr><td>Robinhood Chain Sequencer Feed</td><td><strong>19.73%</strong></td><td><strong>4.640 ms</strong></td><td><strong>9.604 ms</strong></td><td><strong>15.651 ms</strong></td><td><strong>19.749 ms</strong></td></tr></tbody></table>
{% endtab %}

{% tab title="use2-az2" %}
快照時間：2026-08-12T10:18:56.218075456Z，測試區塊總數：252451

<table><thead><tr><th width="157.8203125">Sequencer Feed</th><th width="94.6875">Win rate</th><th width="104.75">P50</th><th width="105.765625">P90</th><th width="107.68359375">P95</th><th>P99</th></tr></thead><tbody><tr><td>BlockRazor Sequencer Feed</td><td><strong>87.01%</strong></td><td><strong>0.000 ms</strong></td><td><strong>0.445 ms</strong></td><td><strong>1.659 ms</strong></td><td><strong>4.831 ms</strong></td></tr><tr><td>Robinhood Chain Sequencer Feed</td><td><strong>12.98%</strong></td><td><strong>5.302 ms</strong></td><td><strong>17.379 ms</strong></td><td><strong>23.194 ms</strong></td><td><strong>70.723 ms</strong></td></tr></tbody></table>
{% endtab %}

{% tab title="use2-az3" %}
快照時間：2026-08-12T10:18:17.587552975Z，測試區塊總數：251670

<table><thead><tr><th>Sequencer Feed</th><th width="103.37109375">Win rate</th><th width="109.68359375">P50</th><th width="106.984375">P90</th><th width="106.8828125">P95</th><th>P99</th></tr></thead><tbody><tr><td>BlockRazor Sequencer Feed</td><td><strong>76.48%</strong></td><td><strong>0.000 ms</strong></td><td><strong>1.640 ms</strong></td><td><strong>2.842 ms</strong></td><td><strong>6.336 ms</strong></td></tr><tr><td>Robinhood Chain Sequencer Feed</td><td><strong>23.52%</strong></td><td><strong>2.742 ms</strong></td><td><strong>11.219 ms</strong></td><td><strong>16.373 ms</strong></td><td><strong>32.839 ms</strong></td></tr></tbody></table>
{% endtab %}
{% endtabs %}

從延遲分布來看，BlockRazor 不僅在大多數區塊上率先到達，而且這種領先優勢具有較高的一致性；相比之下，Robinhood Chain Sequencer Feed 更經常處於落後位置，且延遲波動更為明顯。

綜合而言，BlockRazor Sequencer Feed 在區塊傳輸速度、首達率及延遲穩定性方面均展現出明顯優勢，能為延遲敏感型交易提供更可靠的先發窗口。

### 常見問題

<details>

<summary><strong>Node-required Sequencer Feed 和 Direct Sequencer Feed 有什麼區別</strong></summary>

<table><thead><tr><th width="108.69921875">對比項</th><th width="261.37109375">Node-required Sequencer Feed</th><th>Direct Sequencer Feed</th></tr></thead><tbody><tr><td>接入方式</td><td>需要通過節點接收</td><td>普通客戶端可直接接入，無需運行節點</td></tr><tr><td>區塊傳輸</td><td>按区块高度顺序传输，不跳块</td><td>優先提供最新區塊，網絡擁塞時允許跳過中間區塊</td></tr><tr><td>節點狀態依賴</td><td>依赖节点低延遲同步状态</td><td>不依赖本地节点保持完整、连续的状态同步</td></tr><tr><td>部署成本</td><td>需要部署、維護和監控節點</td><td>接入簡單，運維成本較低</td></tr><tr><td>適合場景</td><td>套利、訂單流項目、量化交易</td><td>狙擊、跟單</td></tr></tbody></table>

</details>

### 價格

價格為$80 / stream / 日和$800 / stream / 月。 <a href="https://blockrazor.io/#/login?redirect=pricing&#x26;purchaseMode=personalized&#x26;chain=robinhood&#x26;serviceId=robinhood_feed_stream&#x26;billing=day" class="button primary small">訂閱</a>

### 端點

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

<table><thead><tr><th width="152.515625">地区</th><th>端点</th></tr></thead><tbody><tr><td>俄亥俄</td><td>ws://us.robinhood-feeder.blockrazor.io/ws/{authToken}</td></tr></tbody></table>
{% endtab %}

{% tab title="wss" %}

<table><thead><tr><th width="152.515625">地区</th><th>端点</th></tr></thead><tbody><tr><td>俄亥俄</td><td>wss://us.robinhood-feeder.blockrazor.io/ws/{authToken}</td></tr><tr><td>東京</td><td>wss://jp.robinhood-feeder.blockrazor.io/ws/{authToken}</td></tr></tbody></table>
{% endtab %}
{% endtabs %}

### 使用步驟

{% stepper %}
{% step %} <a href="https://blockrazor.io/#/login?redirect=pricing&#x26;purchaseMode=personalized&#x26;chain=robinhood&#x26;serviceId=robinhood_feed_stream&#x26;billing=day" class="button primary small">訂閱</a> **BlockRazor Sequencer Feed**
{% endstep %}

{% step %}
**在portal獲取auth，將其作為URI拼接於ws url**

ws\://us.robinhood-feeder.blockrazor.io/ws/{authToken}
{% endstep %}

{% step %}
**停止正在運行的 Robinhood Chain 節點**

具體命令取決於當前使用的部署方式，例如 Docker、Docker Compose 或 systemd。停止前建議確認節點數據目錄已正確掛載，避免重新啟動後丟失已有同步數據。
{% endstep %}

{% step %}
**替換Feed URL**

在節點啟動命令中找到以下配置：

```bash
--node.feed.input.url=wss://feed.mainnet.chain.robinhood.com
```

添加 BlockRazor Sequencer Feed：

```bash
--node.feed.input.url=wss://feed.mainnet.chain.robinhood.com
--node.feed.input.url=ws://us.robinhood-feeder.blockrazor.io/ws/{authToken}
```

完整的主網啟動示例如下：

```bash
DATA_DIR="$HOME/rh/robinhood-nitro-data"

docker run --rm -it \
  -v "$DATA_DIR":/home/nitro/.arbitrum \
  -v "$HOME/rh/config":/home/nitro/config \
  -p 8547:8547 \
  -p 8548:8548 \
  offchainlabs/nitro-node:v3.11.2-3599aca \
    --chain.info-files=/home/nitro/config/robinhood-chain-info.json \
    --parent-chain.connection.url=<L1_EXECUTION_RPC_URL> \
    --parent-chain.blob-client.beacon-url=<L1_BEACON_URL> \
    --init.genesis-json-file=/home/nitro/config/robinhood-genesis.json \
    --node.feed.input.url=ws://<BLOCKRAZOR_FEED_URL> \
    --http.addr=0.0.0.0 \
    --http.port=8547 \
    --http.api=net,web3,eth
```

{% endstep %}

{% step %}
**重新啟動節點**

保存配置後重新啟動節點，節點將通過 BlockRazor Sequencer Feed 接收 Robinhood Sequencer 數據。

查看節點日志，確認：

* BlockRazor Feed 連接成功
* 沒有持續重連、超時或 WebSocket 錯誤
* 節點持續接收最新 Sequencer 數據
* 節點高度正常跟進 Robinhood Chain
  {% endstep %}

{% step %}
**驗證節點狀態**

檢查同步狀態：

```bash
curl -d '{"id":0,"jsonrpc":"2.0","method":"eth_syncing","params":[]}' \
  -H "Content-Type: application/json" \
  http://localhost:8547
```

完全同步後，`eth_syncing` 應返回：

```bash
false
```

{% endstep %}
{% endstepper %}


---

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