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

Burns the subnet's current registration cost from the signing coldkey and
assigns the hotkey a UID on that subnet. The burned TAO is recycled, not
staked — it cannot be recovered by deregistering. The cost floats with
registration demand and is only known at execution time, so a configured
spend cap blocks this call until raised. Fails with
`SubNetRegistrationDisabled` while the subnet's `registration_allowed`
toggle is off. On a full subnet, registering evicts the non-immune neuron
with the lowest emission (ties broken by older registration block, then
lower UID), and the new UID can itself be evicted once its immunity
period ends. Use `root_register` instead for the root network
(netuid 0).

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

## Parameters [#parameters]

| Parameter     | Type    | Required | Description                                                    |
| ------------- | ------- | -------- | -------------------------------------------------------------- |
| `netuid`      | integer | yes      | Subnet to register on.                                         |
| `hotkey_ss58` | string  | no       | Hotkey that receives the UID; 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 burned-register \
  --netuid <int> --dry-run
btcli tx burned-register \
  --netuid <int> -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.BurnedRegister(netuid=1)

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("burned_register", {...}, wallet)
```