Ключевые слова: background, banking, bit, bitcoin, blockchain, blue, business, cash, chart, coin, coins, concept, crypto, cryptocurrencies, cryptocurrency, cryptography, currency, dash, ebusiness, electronic, ethereum, exchange, finance, financial, five, gold, golden, group, growth, internet, many, market, metal, mining, monetary, money, online, pay, payment, ripple, sign, stack, symbol, technology, trade, virtual, wallet, wallpaper, web, yellow,