Ключевые слова: background, bank, banking, bit, bitcoin, blockchain, btc, business, buy, cash, coin, commerce, community, concept, conceptual, crypto, cryptography, currency, digital, dollar, ebusiness, economy, electronic, exchange, finance, financial, gold, golden, hand, holding, international, internet, market, metal, miner, mining, money, net, network, pay, payment, protocol, shining, sign, symbol, trade, value, virtual, web,