# 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.

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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.
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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`

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

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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.

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```
cat stakepoolid.sig
```

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