Ключевые слова: abstract, background, bank, banking, bit, bitcoin, blockchain, business, buy, cash, coin, coins, commerce, computer, concept, crypto, cryptocurrency, cryptography, currency, design, digital, earth, ebusiness, ecommerce, economy, electronic, exchange, finance, financial, global, gold, international, internet, map, market, money, net, network, pay, payment, sign, symbol, technology, trade, vector, virtual, web, world,