$BTC

Here are some popular coin pairs with BTC:

- *Common Trading Pairs:*

- *BTC/USD*: Bitcoin against the US Dollar, ideal for speculating on Bitcoin's price movements relative to the dollar.

- *BTC/ETH*: Bitcoin against Ethereum, allowing traders to speculate on the relative performance of ETH compared to BTC.

- *LTC/BTC*: Litecoin against Bitcoin, another popular crypto-to-crypto pair.

- *BTC/USDT*: Bitcoin paired with Tether, a stablecoin pegged to the US Dollar, providing stability.

- *Other Pairs:*

- *ETH/BTC*: Ethereum traded for Bitcoin, useful for traders who want to move between these two major cryptocurrencies.

- *BNB/USDT*: Binance Coin paired with Tether, another popular stablecoin pair.

- *BTC/BCH*: Bitcoin against Bitcoin Cash, a cryptocurrency forked from Bitcoin.

These pairs are commonly found on most cryptocurrency exchanges and allow traders to compare costs between different cryptocurrencies.