It seems that the world has already accepted the existence of cryptocurrencies not just as a frivolous prank, which is only temporary, but as a phenomenon that should be considered, and therefore, it is necessary to prescribe the rules of the game — regulation.So, for example, at the moment Ukraine is preparing to tax operations with cryptocurrency.Europe is also engaged in the study of the ICO presented on the crypto market and prepares a report in which it will tell about its opinion on how to regulate this industry.The Chairman of ESMA argues that the ICO has a number of similarities with financial instruments and, therefore, it is possible to apply the same regulatory requirements.