Ключевые слова: background, bank, banking, blockchain, business, cash, coin, computers, concept, cryptocurrency, cryptography, currency, digital, ebusiness, ecommerce, economy, electronic, exchange, finance, financial, fume, gold, golden, illustration, internet, isolated, market, metal, mining, monetary, money, net, network, one, pay, payment, reek, reflection, ripple, round, shiny, shopping, silver, single, smoke, symbol, technology, trade, virtual, web,