Ключевые слова: banknote, bill, blockchain, business, cash, coin, concept, crypto, crypto currency, cryptocurrency, cryptography, currency, data, device, digital, disk, dollar, drive, economy, electronic, euro, exchange, finance, financial, hard, hdd, investment, lite coin, litecoin, ltc, market, memory, mining, mirror, money, network, paper, payment, platter, reflection, reflective, silver, storage, symbol, technology, transfer, usa, usd, virtual, virtual money,