One should agree with the opinion that crypto currency and fiat money will be a powerful combination in the future. In fact, they completely satisfy the demand of people for carrying out transactions and payments on-line and off-line, because they have their own strengths and weaknesses. In addition, at this stage, important will be the legal regulation of the market of crypto-currencies. After all, depending on this regulation and legalization, the crypto currency will be used, along with fiat money in everyday life.