A cryptocurrency is a type of digital currency built on the blockchain system. During cryptocurrency payments, computer code is used to transmit credit from one participant to another. A blockchain transaction that has been cryptographically signed serves as the record of such a transfer. Mastercard enables cryptocurrency credit card payments at various stores. At the same time, Paypal only permits payments to external wallets. Particularly in certain places, cryptocurrency has already made a name for itself as a form of payment.