Ключевые слова: background, bank, banking, banknote, bcc, bit, bitcoin, btc, business, cash, circle, coin, commerce, community, crypto, cryptocurrency, cryptography, currency, decentralized, digital, dollar, ebusiness, economy, electronic, exchange, finance, financial, golden, international, internet, investment, market, metal, miner, mining, money, net, object, pay, payment, protocol, provider, rate, shining, shopping, trade, virtual, web,