Ключевые слова: background, bank, banking, banknote, bill, bit, bitcoin, blockchain, btc, business, cash, coin, commerce, concept, crypto, cryptocurrency, cryptography, currency, cyberspace, digital, dollar, economy, electronic, exchange, finance, financial, gold, golden, icon, international, internet, investment, market, metal, mining, money, network, paper, pattern, pay, payment, shopping, sign, symbol, technology, texture, trade, value, virtual, web,