Analyzing the monetary nature of Cryptocurrencies in Economics:Emphasizing on the volatility of selected Cryptocurrencies, Euro-Dollar and Gold

The special features of the cryptocurrency have raised them as the future money of the global economy, while the monetary nature of these cryptocurrency has been questioned. In the economic literature, three main functions of money are considered as: (1) a medium of exchange, (2) a unit of account, and (3) a store of value. In this research, it will first attempt to address the history, nature and types of digital, virtual, and crypto money in the monetary system of the countries, and then, by modeling the exchange rate fluctuation of the selected cryptocurrencies, the Euro-Dollar and Gold with the GARCH family models, their monetary functions will be investigated. At the current time, it appears that the fluctuations of these types of cryptocurrency and the widespread inadequate use of them in micropayments, their monetary functions are seriously skeptical and therefore the use of money does not seem to be correct for them right now. With the advancement of technology and more people's familiarity with the advancement of technology, the depth of the cryptocurrency market could be increased, reducing their fluctuations and increasing the use of micro payments, and as a result, their money functions are expected to become more prominent over time.