Ключевые слова: background, bank, banking, bills, bitcoin, blockchain, business, capital, coin, coins, competes, concept, course, crisis, crypto, crypto currency, cryptography, currency, cyberspace, digital, economy, electronic, electronically, energy, ethereum, ethereum silver, finance, financial, global, gold, increasing course, inflation, international, isolated, market, metal, mining, money, network, payment, platform, prevention, profit, rate of return, retirement provision, symbol, technology, trade, virtual, wealth,