Ключевые слова: background, bank, banking, bit, bitcoin, btc, business, cash, circle, close, coin, community, cryptocurrency, cryptography, currency, decentralized, digital, ebusiness, economy, electronic, exchange, financial, gold, golden, international, internet, keyboard, market, metal, miner, mining, money, net, object, pay, payment, penny, protocol, provider, render, shining, shopping, sign, symbol, trade, value, virtual, web,