Ключевые слова: abstract, app, approach, artificial, background, bitcoin, blockchain, blogging, book, business, button, cellphone, coding, coin, conference, cost, crypto, cryptography, currency, decentralization, desktop, digital, distributed, double, engine, exposure, future, ico, interior, laptop, money, multi, network, no people, paper, phone, search, sketch, smart, social, study, technology, top, touch, trader, transaction, view, web, workplace, world,