Ключевые слова: background, bank, banking, bit, bitcoin, blockchain, btc, business, cash, chain, coin, commerce, concept, conceptual, crypto, cryptocurrency, cryptography, currency, digital, ebusiness, economy, electronic, exchange, finance, financial, future, global, gold, golden, growth, international, internet, investment, market, mining, monetary, money, net, network, object, pay, payment, sign, symbol, trade, virtual, web,