Ключевые слова: agreement, bit, bitcoin, blockchain, business, cash, chain, coin, computer, connection, contour, contract, crypto, cryptocoin, cryptocurrency, currency, design, digital, document, exchange, farm, finance, icon, illustration, investment, isolated, key, line, linear, lock, mining, money, network, outline, pay, payment, plant, private, protect, secure, security, set, sign, stake, symbol, technology, wallet,