Ключевые слова: background, bank, banking, blockchain, business, buy, cash, coin, commerce, concept, conceptual, concrete, copy, crypto, cryptocurrency, cryptography, currency, digital, ecommerce, economy, electronic, eth, ethereum, exchange, finance, financial, gold, golden, internet, market, metal, mining, money, net, network, object, pay, payment, shining, sign, space, symbol, trade, virtual, web,