Ключевые слова: background, bank, banking, bit, bitcoin, blockchain, btc, business, buy, cart, cash, coin, commerce, crypto, cryptography, currency, design, digital, dollar, ebusiness, ecommerce, economy, electronic, exchange, finance, financial, gold, international, internet, market, mine, miner, mining, money, network, online, pay, payment, sale, shop, stock, store, success, symbol, trade, trolley, value, virtual, web,