$BTC A coin pair, also known as a trading pair, involves two currencies traded against each other. For BTC, popular pairs include BTC/USD, BTC/ETH, and BTC/Altcoins. The BTC/USD pair, also known as the Bitcoin-Dollar pair, is the most widely traded. It represents the value of one Bitcoin in US dollars. Trading BTC pairs allows users to speculate on Bitcoin's price movements, hedge against volatility, or diversify their portfolios. Exchanges like Coinbase, Binance, and Kraken offer various BTC pairs, enabling traders to buy, sell, or swap Bitcoin against other cryptocurrencies or fiat currencies. Trading volumes are usually high.