$BTC

"Trading pairs" are assets exchangeable on an exchange. Understanding them is crucial for buying certain cryptocurrencies and advanced arbitrage. Many cryptocurrencies can only be bought with other cryptos, making pair knowledge essential to expand holdings beyond common coins.

Bitcoin (BTC) is a highly versatile and widely offered base currency on most exchanges. Its integration makes it a primary asset in many pairs, and it's essential for accessing lesser-known cryptos. Arbitrage opportunities with BTC pairs arise when correlation across exchanges is low, though this is an advanced strategy.