Prior to mining TAO, miners must attain a UID slot within one of Bittensor's sub-networks via a competition called registration. At the time of writing, there are 1024 uids available on subnetwork 1 and 4096 on subnetwork 3.
1uids 2 netuid 1: [ 0, 1, 2, ... 1022, 1023 ] 3 netuid 3: [ 0, 1, 2, ... 4094, 4095 ]
There are two methods of competing for registrations:
Proof-of-Work registration
1btcli register --netuid SELECTED_NETUID --wallet.name YOUR_COLDKEY --wallet.hotkey YOUR_HOTKEY
TAO Recycle registration
1btcli recycle_register --netuid SELECTED_NETUID --wallet.name YOUR_COLDKEY --wallet.hotkey YOUR_HOTKEY
Once the registration cost has been paid, the miner enters the network by replacing an older underperforming miner and can now mine themselves from that slot.
Proof-of-Work (POW) registrations require miners to solve a SHA256 hashing problem before winning a UID. This route is recommmended for miners contributing raw compute power to Bittensor or don't have a previous token supply.
1btcli register 2 --netuid SUBNETWORK_NETUID_TARGET 3 --wallet.name YOUR_COLDKEY_NAME 4 --wallet.hotkey YOUR_HOTKEY_NAME
Coldkeys
The POW registration does not requires only your coldkeypub.txt and hotkey. It is also possible to sign the registration extrinsic payload by a separate key.
It is highly recommended that you use a Nvidia GPU to register for a faster hash rate. To use your GPU during the hashing problem you must install Cubit.
1python3 -m pip install bittensor[cubit]
Once installed you can specify which GPU you are running your registration over or --all of them.
1btcli register 2 --cuda 3 --all
Recycle registrations allow a miner to recycle TAO back into the inflation mechanism (to be passed through the incentive mechanism at a later date) in exchange for a UID on a subnetwork. Recycle registrations cost TAO to execute but takes less time to activate than POW registration. They are recommended for miners seeking to attain slots quickly and who already have a small amount of TAO at their disposal.
1btcli recycle_register 2 --netuid SELECTED_NETUID 3 --wallet.name YOUR_COLDKEY 4 --wallet.hotkey YOUR_HOTKEY
POW and the recycle registration cost are mutually adaptive, updating their costs on an adjustment interval so that the number of registrations over that interval remain constant, i.e. 3 registrations per 100 blocks. Below is pseudo code for the update conditions.
1if regs > target and recycle_regs > pow_regs: 2 burn_cost *= ( n_burn_regs + target_regs ) / (2 * target_regs) 3 4elif regs > target and recycle_regs <= pow_regs: 5 pow_difficulty *= ( n_pow_regs + target_regs ) / (2 * target_regs) 6 7elif regs <= target and recycle_regs > pow_regs: 8 burn_difficulty *= ( n_burn_regs + target_regs ) / (2 * target_regs) 9 10elif regs <= target and recycle_regs <= pow_regs: 11 pow_difficulty *= ( n_pow_regs + target_regs ) / (2 * target_regs)
To view the current subnetwork difficulty on each subnet run btcli list_subnets
1btcli list_subnets 2NETUID NEURONS MAX_N DIFFICULTY TEMPO CON_REQ EMISSION BURN(τ) 31 691 1.02 K 198.08 T 99 None 28.44% τ4.75710 43 4096 4.10 K 320.81 T 99 None 71.56% τ1.00000 5 DIFFICULTY: Current proof of work difficulty 6 BURN: Current cost to register a key via recycle registration.
Once a slot has been attained you can view the performance of you registered wallet you can run btcli overview --netuid.
| Parameter | Value | Description |
|---|---|---|
| COLDKEY | my_coldkey | The name of the coldkey associated with the won slot. |
| HOTKEY | my_first_hotkey | The name of the hotkey associated with the won slot. |
| UID | 5 | The index of the uid out of available uids. |
| ACTIVE | True | Whether or not the uid is considered active. |
| STAKE(τ) | 71.296 | The amount of stake on this miner. |
| RANK | 0.0629 | This miner's absolute ranking according to validators on the network. |
| TRUST | 0.2629 | This miner's trust as a proportion of validators on the network. |
| CONSENSUS | 0.89 | This miner's aggregate consensus score. |
| INCENTIVE | 0.029 | This miner's incentive, TAO emission attained via mining. |
| DIVIDENDS | 0.001 | This miner's dividends, TAO emission attained via validating. |
| EMISSION | 29_340_153 | This miner's total emission in RAO ( 10^-9 TAO ) per block. |
| VTRUST | 0.96936 | This validators trust score as a validator. |
| VPERMIT | * | Whether this miner is considered active for validating on this subnetwork. |
| UPDATED | 43 | Blocks since this miner set weights on the chain. |
| AXON | 131.186.56.85:8091 | The entrypoint advertised by this miner on bittensor blockchain. |
| HOTKEY_SS58 | 5F4tQyWr... | The raw ss58 encoded address of the miner's hotkey. |