Ключевые слова: abstract, background, bank, banking, binary, bitcoin, block, block chain, blockchain, blocks, business, cash, chain, code, communication, concept, connection, control, crypto, cryptocurrency, currency, data, digital, ebusiness, economy, electronic, exchange, finance, financial, game, information, internet, investment, market, mining, money, network, networking, security, solution, structure, success, technology, text, virtual, wood, wooden,