The emergence of blockchain technologies and cryptocurrencies in recent years has changed the global financial market. Market players have gained access to a fundamentally new tool that allows them to change their investment policy, as well as carry out money transfers and other functions in a convenient and fairly competitive field. In many ways, cryptocurrencies have proven to be more flexible than “traditional” currencies and have provided new opportunities for participants of the market. The volume of trades and transactions on them is constantly growing, an increasing number of them are appearing, and the corresponding infrastructure is developing. At the same time, cryptocurrencies cause certain inconvenience to government institutions, since they often become the object of fraud and the basis for fraud and not entirely legal approaches to business, and, despite the fairly transparent technology for conducting transactions, data about them is not always possible or easy to obtain. By taking away part of the turnover from the banking sector, the cryptocurrency market makes it virtually uncontrollable by government agencies, which causes concern among governments of different countries. It is expressed, in particular, in constant attempts to control the circulation of currencies based on blockchain by central banks. At the same time, commercial banks, on the one hand, are forced to compete in their activities with cryptocurrencies, and on the other hand, they are increasingly using them in their activities due to high demand from individuals and legal entities and the desire to gain competitive advantages.