$BTC The coin pair $BTC refers to Bitcoin trading against another cryptocurrency or fiat currency on an exchange. It is a key pair in global crypto markets, often used to measure the value of altcoins and facilitate liquidity. For example, in the BTC/ETH pair, traders exchange Bitcoin for Ethereum. As the first and most widely recognized cryptocurrency, Bitcoin ($BTC) serves as a base trading asset on most platforms. Its performance significantly influences the entire crypto market. Traders monitor $BTC pairs for price movements, arbitrage opportunities, and market trends, making them essential tools for investment strategies and technical analysis in cryptocurrency trading.