Blockchain technology is very highly appreciated by almost all states and such a general interest of states has little to do with cryptocurrency. States are primarily interested in this technology because for the first time it allows with a high degree of security online to store and use large databases of various information. In our world, when most of the information is connected to the Internet, very great opportunities and prospects open up here. Since the main function of states as a whole is in the public management of society, with the help of blockchain technology, such management makes it possible to increase efficiency by tens and hundreds of times.