> ## Documentation Index
> Fetch the complete documentation index at: https://developers.gopher-ai.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Fund Wallet

## Get Tokens

### Testnet

To get tTAO to register your miner on testnet, head to **[Bittensor's Testnet Discord](https://discord.com/channels/799672011265015819/1190048018184011867)** channel and request tTAO! You will need to provide your miner's coldkey.

### Mainnet

You can purchase TAO from many exchanges, including **[Coin Marketcap](https://coinmarketcap.com/currencies/bittensor/#Markets)** and **[Changenow.io](https://changenow.io/?from=eth\&to=tao)**. Copy your wallet's coldkey and send TAO to the address!  Subnet registration is a variable cost, so be sure to factor this into your budget.

### Registration Costs

* 📊 View registration costs and network stats
* 📈 Monitor price fluctuations in real-time
* 💰 Plan your registration budget accordingly

<CardGroup cols={2}>
  <Card title="Subnet 42" href="https://taostats.io/subnets/42/metagraph">
    View registration costs and network stats for Masa's data scraping subnet
  </Card>
</CardGroup>