Ключевые слова: background, bank, banking, bill, bit, bitcoin, blockchain, btc, business, buy, cash, coin, commerce, community, crypto, cryptography, currency, digital, dollar, ebusiness, ecommerce, economy, electronic, exchange, finance, financial, gold, golden, growth, international, internet, market, metal, miner, mining, monetary, money, network, pay, payment, purse, shopping, stock, symbol, trade, value, virtual, wallet, web,