Ключевые слова: background, bitcoin, blockchain, book, business, coding, coin, conference, copybook, corporate, crypto, cryptography, currency, data, decentralization, digital, double, drawing, engine, exposure, finance, financial, future, ico, index, intelligent, investment, letter, machine, marketing, modern, money, multi, network, notebook, notepad, professional, purpose, sell, sketch, stock, technology, textbook, top, topview, transaction, transform, view, wallpaper, web,