Surely some of you know what the Ethereum blockchain (from English Ethereum) is, others, on the contrary, do not even have the slightest idea about it. One way or another, both the first and second heard something about this platform. Recently, many articles have been devoted to this topic in various major magazines, but for those people who have heard little about Ethereum, all articles on this topic seem to be something mystical and completely incomprehensible. Then what is this platform? I...