Ключевые слова: background, banking, bit, bitcoin, btc, business, cash, child, coin, commerce, concept, crypto, cryptocurrency, cryptography, currency, digital, economy, electronic, exchange, finance, financial, future, giving, gold, golden, grass, green, hand, holding, internet, man, market, metal, money, net, object, pay, payment, shining, sign, symbol, technology, trade, virtual, web, woman, young,