Ключевые слова: arm, background, bitcoin, blockchain, business, businessman, coding, coin, commercial, computer, conference, crash, crypto, cryptography, currency, data, decentralization, digital, double, engine, exposure, future, hands, holding, ico, ipo, man, memo, money, multi, network, notepad, online, pen, person, purpose, school, single, sketch, startup, stock, strategy, studying, technology, think, training, transaction, web, world, writing,