Blockchain technologies have recently begun to develop very actively in the world market. Every year this technology exceeds all the expectations and forecasts of experts in this field both in terms of the number of needs of specialists and its application in various fields. Blockchain is directly related to information security, cybersecurity, banking, education, stock trading and other areas. A huge growth and breakthrough has also been the development of cryptocurrency, which is constantly increasing in price, as well as in the ways it is used. This article will consider: the essence of the blockchain, its application in popular and developing technologies that are built thanks to blockchain technologies; comparison of different types of tokens and cryptocurrencies; the growing popularity of blockchain in the global market; statistics of vacancies and salaries in this area are given; a comparative table of statistical data on the salaries of developers working with blockchain technologies from ordinary developers.