# Verifying an ITN Stake Pool

In order to defend against spoofing and hijacking of reputable stake pools, a owner can verify their ticker by proving ownership of an ITN stake pool.

{% hint style="info" %}
Incentivized Testnet phase of Cardano’s Shelley era ran from late November 2019 to late June 2020. If you participated, you can verify your ticker.
{% endhint %}

Make sure the ITN's `jcli` binaries are present in `$NODE_HOME`. Use `jcli` to sign your stake pool id with your `itn_owner.skey`

{% tabs %}
{% tab title="air-gapped offline machine" %}

```bash
./jcli key sign --secret-key itn_owner.skey stakepoolid.txt --output stakepoolid.sig
```

{% endtab %}
{% endtabs %}

Visit [pooltool.io](https://pooltool.io) and enter your owner public key and pool id witness data in the metadata section.

Find your pool id witness with the following command.

{% tabs %}
{% tab title="air-gapped offline machine" %}

```
cat stakepoolid.sig
```

{% endtab %}
{% endtabs %}

Find your owner public key in the file you generated on ITN. This data might be stored in a file ending in `.pub`

Finally, [update your stake pool information](/spanish/coins/overview-ada/guide-how-to-build-a-haskell-stakepool-node/part-iv-administration/updating-stake-pool-information.md) with the PoolTool-generated **`metadata-url`** and **`metadata-hash`**. Notice the metadata has an "extended" field that proves your ticker ownership since ITN.


---

# 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://www.coincashew.com/spanish/coins/overview-ada/guide-how-to-build-a-haskell-stakepool-node/part-v-tips/verifying-an-itn-stake-pool.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.