$BTC Bitcoin against Fiat Currencies (BTC/fiat):

• These pairs allow traders to exchange Bitcoin for traditional government-issued currencies.

Examples: BTC/USD (Bitcoin/US Dollar), BTC/EUR (Bitcoin/Euro), BTC/JPY (Bitcoin/Japanese Yen), BTC/GBP (Bitcoin/British Pound).

• BTC/USD is often considered the most popular crypto-to-fiat pair and can act as a general indicator of the cryptocurrency market's direction