$BTC A BTC pair refers to a trading pair on a cryptocurrency exchange where Bitcoin (BTC) is used as the base or quote currency. In a BTC pair, you trade another cryptocurrency (like ETH, XRP, or LTC) against BTC. For example, in the ETH/BTC pair, you're buying or selling Ethereum using Bitcoin. BTC pairs are essential in crypto markets as Bitcoin is widely accepted and highly liquid. These pairs help determine the relative value of altcoins in BTC rather than fiat currencies. Traders use BTC pairs for arbitrage, portfolio balancing, and to hedge positions within the broader cryptocurrency ecosystem.