Ключевые слова: abstract, agreement, analysis, background, bank, bitcoin, block, blockchain, business, chain, coin, communication, concept, contract, contracts, currency, data, development, digital, document, electronic, ethereum, finance, financial, growth, human, illustration, information, insurance, internet, management, modern, money, office, professional, resources, risk, security, skyscraper, smart, statistics, success, teamwork, technology, trade, two persons, web,