Ключевые слова: b, background, bank, banking, bit, bitcoin, blockchain, btc, business, cash, chart, coin, concept, crypto, cryptocurrency, cryptography, currency, decentralized, diagram, digital, ecommerce, economic, economy, electronic, exchange, finance, financial, global, gold, golden, graph, growth, internet, investment, market, monetary, money, network, pay, payment, profit, shop, shopping cart, sign, stock, store, symbol, technology, trade, virtual,