Ключевые слова: abstract, background, banknote, bill, bitcoin, blockchain, business, buy, cash, coding, coin, compensation, conference, credit, crime, crypto, cryptography, currency, debt, decentralization, devaluation, digital, dollars, double, drawing, engine, exposure, fair, future, give, hand, hype, ico, illegal, lucky, man, money, multi, network, pay, payment, purpose, recession, rich, savings, technology, trader, transaction, usd, web,