Ключевые слова: abstract, assess, background, bitcoin, blockchain, brain, business, cell, cellphone, closeup, coding, coin, conference, crypto, cryptography, currency, data, decentralization, digital, distributed, double, drawing, engine, exchange, exposure, fill in, future, growth, ico, interactive, lifestyle, man, money, multi, network, notebook, pay, phone, purpose, safety, sell, smart, smartphone, tablet, technology, transaction, web, website, work, world,