# root-register (/docs/tx/root-register)

Joins the hotkey to the root network, the TAO staking pool (netuid 0 has
no miners and no alpha; validators register here to receive root stake).
Placement is stake-based rather than burn-based: root slots are limited, so
joining a full root network evicts the member with the least stake, and a
hotkey without enough stake behind it will not hold a seat. Root
registrations are also capped per block (`max_registrations_per_block`)
and per interval (three times `target_registrations_per_interval`);
hitting either cap fails until the window passes. Use
`burned_register` for ordinary subnets.

| Signer    | Pallet          | Wraps                           |
| --------- | --------------- | ------------------------------- |
| `coldkey` | SubtensorModule | `SubtensorModule.root_register` |

## Parameters [#parameters]

| Parameter     | Type   | Required | Description                                                              |
| ------------- | ------ | -------- | ------------------------------------------------------------------------ |
| `hotkey_ss58` | string | no       | Hotkey to register on the root network; defaults to the wallet's hotkey. |

Address parameters (`--hotkey`, `--coldkey`, `--dest`, ...) accept a raw ss58
address, an address-book or proxy-book name, or a local wallet/hotkey name.

## CLI [#cli]

Preview with `--dry-run` (shows fee, effects, and policy result without
submitting), then submit:

```bash
btcli tx root-register --dry-run
btcli tx root-register -w my_coldkey
```

## Python [#python]

```python
import bittensor as sub
from bittensor.wallet import Wallet

wallet = Wallet(name="my_coldkey", hotkey="my_hotkey")
intent = sub.RootRegister()

async with sub.Client("finney") as client:
    plan = await client.plan(intent, wallet)   # fee, effects, policy — no submission
    result = await client.execute(intent, wallet)
    if not result.success:
        print(result.error.code, result.error.remediation)
```

Or build it by op name, as an agent would:

```python
await client.execute_tool("root_register", {...}, wallet)
```