# BTQ Node CLI Wallet - Slave Keys

## BTQ Node CLI Wallet - Slave Keys

The BTQ wallet is an XMSS Merkle tree constructed using the private key to generate leaves. Each "leaf" can also generate a tree of OTS Slave keys that can be used to sign transactions. This allows further expansion of a BTQ wallet, extending the number of transactions you can process before needing to regenerate a new wallet.

To create a `slaves.json` file, you will need a BTQ `wallet.json` file and a working installation of BTQ. See the guide for creating a BTQ CLI Wallet.

Currently, the only way to generate a `slaves.json` file is by using the command line utility `btq`. This can be installed by following the BTQ Node Guide. You will need shell access and be logged into the computer running `btq`.

### **Create a `slaves.json`**

To generate a `slaves.json` file, you need to be connected to an active and synced node. This can be a local node or any of the peers shown in your node's peer list. You also need a wallet to use for the slaves file.

Assuming you have a synced node running on the local computer and a `wallet.json` file in the local directory, you can simply enter:

```bash
btq slave_tx_generate
```

You will be asked a few questions. You can generate a maximum of 100 slaves with a single master OTS key, which is used to sign the `slaves.json` file onto the network, validating the keys.

Example prompts:

```plaintext
Src []: 0              # Which address to use in the wallet file. 0 is the first address.
Master []:             # Master Address
Number of slaves [0]:  # Number of slaves * OTS_key_height (e.g., for tree height 10, this * 1024)
Access type [0]:       # Enter 0 to allow transactions, 1 for secure mining only
Fee [0.0]:             # Fee to pay to broadcast this across the network.
```

### **Number of Slaves**

| **Tree Height** | **Available Keys** | **With `slaves.json`** |
| --------------- | ------------------ | ---------------------- |
| 8               | 256                | 6,553,600              |
| 10              | 1,024              | 104,857,600            |
| 12              | 4,096              | 1,677,721,600          |
| 14              | 16,384             | 26,843,545,600         |
| 16              | 65,536             | 429,496,729,600        |
| 18              | 262,144            | 6.871947674×10¹²       |

This guide ensures you can effectively manage and expand your BTQ CLI wallet using Slave keys.