Ключевые слова: abstract, background, banking, bitcoin, blockchain, btc, business, chain, coin, coins, compare, concept, crypto, cryptography, currency, dark, dollar, economic, economy, electronic, euro, exchange, finance, financial, global, globe, gold, golden, growth, icon, increase, international, internet, invest, investment, ipo, market, mining, money, panorama, rate, real, rise, share, stock, technology, trade, virtual, web,