# hotkey-owner (/docs/query/hotkey-owner)

**Category:** Neurons & registration

## Parameters [#parameters]

| Parameter     | Type   | Description                             |
| ------------- | ------ | --------------------------------------- |
| `hotkey_ss58` | string | Hotkey whose owning coldkey to look up. |

## CLI [#cli]

```bash
btcli query hotkey-owner --hotkey <ss58|name> --json
```

## Python [#python]

Namespace method (autocomplete, signature help):

```python
import bittensor as bt

sub = bt.Subtensor()
result = sub.neurons.hotkey_owner(hotkey_ss58="5F...")
```

Or dispatch by name, as an agent would:

```python
result = sub.read("hotkey_owner", hotkey_ss58="5F...")
```

Async is the same surface awaited: `async with bt.Subtensor() as client:`.

## On-chain implementation [#on-chain-implementation]

* Storage [`SubtensorModule.Owner`](/code/pallets/subtensor/src/lib.rs#L1347)

Every file is browsable under [/code](/code) exactly as built into the runtime.