Ключевые слова: background, bank, banking, bankruptcy, bitcoin, bitcoins, black market, broker, business, coin, commerce, computer, concept, crisis, currency, deal, decrease, depression, earning, economic, economic crisis, economy, exchange, finance, financial, financial crisis, financial stress, fraud, inflation, investment, loss, lowering, mining, monetary, money, money pressure, negative, poverty, problems, push, recession, refund, risk, risky, savings, stability, system,