Fintech companies now utilize cryptocurrency wallets, and there is a discernible affinity between cryptocurrency and fiat currencies. A person or registered entity holding cryptocurrency does not need to possess it in its physical form; it is inherently digital. Yet, throughout the world, many financial authorities also hold part of their currency electronically. It has been estimated that today as much as 90% of money in the world exists in bank databases as cryptocurrency. The development of the payment sphere gives rise to digital currencies, be it a cryptocurrency or an existing control fiat currency, available anytime by the majority of Internet users.