Ключевые слова: abstract, background, banking, bitcoin, block, block chain, blue, business, cash, chain, cloud, code, commerce, communication, computer, concept, crypto, crypto coins, crypto currency, data, design, digital, display, electronic, exchange, finance, financial, future technology, futuristic, graphic, illustration, information, interface, internet, investment, modern, money, network, peer, research, science, screen, security, sign, tech, technology,