Ключевые слова: abstract, background, block, blockchain, blue, box, business, byte, chain, color, colored, concept, connected, content, crypto, cryptocurrency, cube, currency, cyber, design, economy, element, exchange, graphic, icon, illustration, information, international, line, link, modern, net, node, online, pay, protection, research, safe, shape, sign, six, symbol, system, technology, trade, verify,