Bitstamp Buy Bitcoin Bitstamp is one of the world’s largest Bitcoin exchanges. Any gains made from the sale of digital currency are not subject a holding period. Bank account is usually the cheapest deposit method for buying coins. After depositing funds directly from your bank account not including wire transfers or debit cards , you will be able to immediately buy digital assets using your USD wallet. Your available balance is calculated as your total portfolio balance minus your pending funds. These funds appear within a separate Bitcoin Cash wallet on your Accounts page or in the Coinbase mobile apps.