# register-leased-network (/docs/tx/register-leased-network)

Creates a subnet paid for by a crowdloan rather than a single coldkey: the
crowdloan's funds cover the network registration cost (leftover cap is
refunded to contributors pro-rata, with any rounding remainder going to
the beneficiary), contributors earn `emissions_share` percent of the
subnet owner's emission cut (not of total subnet emissions) as dividends,
and the beneficiary operates the subnet through a scoped proxy. Must be
dispatched in a crowdloan context — it fails as a standalone call. The
cost is not cheaply boundable up front, so a configured spend cap blocks
this until raised. With an `end_block` the beneficiary can later take
full ownership via `terminate_lease`; without one the lease is
perpetual and ownership never transfers.

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

## Parameters [#parameters]

| Parameter         | Type    | Required | Description                                                                                       |
| ----------------- | ------- | -------- | ------------------------------------------------------------------------------------------------- |
| `emissions_share` | integer | yes      | Percent (0-100) of the subnet owner's emission cut paid to crowdloan contributors as dividends.   |
| `end_block`       | integer | no       | Block at which the lease ends and the beneficiary may take ownership; omit for a perpetual lease. |

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 register-leased-network \
  --emissions-share <int> --dry-run
btcli tx register-leased-network \
  --emissions-share <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.RegisterLeasedNetwork(emissions_share=0)

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