Most of the information presented today on blockchain suffers from fragmentary, one-sided or complex terminology. Here is the first systematic presentation of the topic of blockchain in Russian, in which the author explains technologically complex concepts in an understandable language. In addition to the history of the origin and description of the technology, the book discusses the most popular projects implemented on the blockchain, existing and potential applications in various industries, and also the problems of relationships between blockchain projects and states. Finally, the author examines in detail the most popular and popular topics - investments in crypto-assets, associated risks and prospects for the development of blockchain. The book is addressed to a wide range of readers and will be of interest to both technical specialists and audiences far from financial and IT technologies.