Bitcoin and the banking system perform completely different tasks and functions. Therefore, bitcoin has no chance to replace the banking system as a whole. Bitcoin is primarily a means of payment, that is, money and, in addition, it is now largely used as a repository of value. In addition to these functions, banks perform many different other functions. First of all, in any state, banks define the credit and financial policy, they credit certain sectors of the economy, help the state fulfill the plans for the country's economic development. Bitcoin of these functions can not perform. Moreover, due to its high volatility, it is capable of completely imbalancing the economy of any strong state.