Ключевые слова: , , , 100, american, background, bank, banking, bill, bills, bit coin, bitcoin, budget, business, cash, computer, cryptocurrency, currency, decentralized, dollar, ecommerce, economy, exchange, finance, financial, fluctuating, global network, hundred, internet, investment, loan, money, paper, rich, risk value, saving, savings, security, success, technology, ugi, us , usa, virtual, virtual money, wealth,