Ключевые слова: background, bank, banking, bitcoin symbol, blockchain, business, cash, coin, commerce, community, computer, concept, cryphoghaphy, crypto, crypto currency, cryptographic, cryptography, currency, cyberspace, decentralized, digital, digital currency, digital money, ebusiness, economy, electronic, ethereum, ethereum coin, exchange, finance, financial, gold, international, internet, investment, keyboard, laptop, letters, market, miner, mining, money, pay, payment, shopping, symbol, trade, value, virtual, web,