Ключевые слова: abstract, background, bank, banking, bit, bitcoin, blue, bubble, business, cash, coin, collapse, concept, conceptual, crash, crisis, crypto, cryptocurrency, currency, cyberspace, decline, digital, drop, drowning, economy, electronic, eos, exchange, fall, finance, financial, gold, golden, internet, investment, market, mining, monetary, money, nature, payment, price, ripple, risk, sink, sinking, symbol, trade, virtual, water,