The OTC Bitcoin market generally operates in the same way the global financial OTC markets do. It acts as an alternative to formal exchanges. Over the Counter Bitcoin purchases allows users to buy large amounts of currency without moving the markets and subsequently, the price of their transaction. Buyers looking to purchase 500 BTC, for instance, can opt to risk significant price slippage on an exchange due to market depth, or go straight to a crypto OTC desk and order 500 BTC instantly at a fixed price.