Registering a hotkey

Before you can begin mining Tao, you must first register a hotkey to the network by solving the proof of work (POW) or by paying a fee with recycle_register. The Bittensor network is comprised of 4096 Servers, and each time a new hotkey is registered to the network, the lowest ranked miner is kicked off of the network. POW registration will likely require GPUs.

Registering with a GPU

Before you can utilize the CUDA registration, you must first install CUDA-toolkit and cubit. Please note that CUDA registration only supports sm_86 enabled CUDA GPU (30XX series, Axxxx series or higher) Other GPUs may require additional configuration for registration.

Installing CUDA-toolkit

Install CUDA-toolkit 11.3 or higher in accordance with your operating system and version if you have yet to do so. deb(local), deb(network), and runfile(local) should each be sufficient installer types.

Enter the Bittensor directory

cd ~/.bittensor/bittensor

Install cubit

pip install git+

Troubleshooting and testing

Should the previous installation fail, you may install from source or a wheel: cubit installation

You can check if your GPU is being seen through torch:

# python3
import torch

A quick way to test if the GPU registration process is working properly is by choosing the test network, Nobunaga, upon the miner startup described below. Registration to the Nobunaga network should only take a few minutes. Additional configurations may optimize your registration speed. Please see here for a full list of CUDA registration flags.

With your keys created and CUDA registration installed, you can now register your miner.

btcli register --cuda

Alternatively you may register and run your miner with recycle register.

btcli recycle_register

You will be immediately prompted to:

Enter a chain

To immediately gain access to Subtensor - our network blockchain - choose "finney". Finney is useful for quick connections to the network like checking your wallet balance, however it is not reliable for mining. For serious Servers we recommend running an instance of Subtensor locally in order to maximize speed and connection. Should you be running Subtensor locally, choose "local".

To familiarize yourself with the protocol without mining, choose our test network, Nobunaga

Enter a network uid

Enter the subnetwork that you wish to register too.

Enter your wallet

Enter the name of your coldkey and hotkey credentials.

Note: you will need a separate hotkey for each miner you register.