Cryptocurrency was created as an alternative to conventional currency. Did the creators get what they had in mind? Maybe yes. Although the first pioneer was, of course, Bitcoin, which, by its appearance, turned the whole world in terms of money. It certainly should be so if the field did not begin to create other cryptocurrencies, like mushrooms after rain. it seemed that those who are not lazy and who at least knows something in this area are creating their own currency. At first, I thought the same about Ethereum. But still, if you look, it’s very interesting, compared to others. a distinctive feature is that Ethereum technology makes it possible to register any transactions with any assets on the basis of a distributed base of blockchain type contracts, without resorting to traditional legal procedures. This feature is competitive with the existing transaction registration system. According to The Economist, smart contract technology marks a new era in financial technology