$BTC Here are some popular cryptocurrency pairs with Bitcoin (BTC):

1. BTC/USDT (Bitcoin to Tether)

2. BTC/ETH (Bitcoin to Ethereum)

3. BTC/LTC (Bitcoin to Litecoin)

4. BTC/BNB (Bitcoin to Binance Coin)

5. BTC/SOL (Bitcoin to Solana)

You can find real-time prices and trading information for these pairs on platforms like:

1. Binance

2. Coinbase

3. Kraken

4. CoinMarketCap

5. CoinGecko

Some specific coin pairs with Bitcoin include:

1. AAVE/BTC (Aave to Bitcoin)

2. ALCX/BTC (Alchemix to Bitcoin)

3. ALGO/BTC (Algorand to Bitcoin)

Would you like more information on a specific pair or exchange?