$BTC If you're looking to pair BTC (Bitcoin), here are some popular options:

1. *BTC/USDT*: Bitcoin to Tether, a stablecoin pegged to the US dollar.

2. *BTC/ETH*: Bitcoin to Ethereum, a popular cryptocurrency pair.

3. *BTC/BUSD*: Bitcoin to Binance USD, another stablecoin pair.

You can find these pairs on various cryptocurrency exchanges like Binance. Let me know if you need more information!