Ключевые слова: abstract, background, bank, banking, binary, bitcoin, block, blockchain, blue, building, business, cash, chain, code, coded, codeifcation, commerce, communication, computer, concept, cryptocurrency, cryptographic, currency, data, digital, economy, electronic, exchange, fiber, finance, financial, future, information, internet, investment, ledger, market, metal, monetary, money, payment, rj 45, safety, security, sharing, technology, transfer, vpn, world,