Ключевые слова: background, banking, block, blockchain, business, buy, cash, chain, coin, commerce, computer, concept, copy, crypto, cryptocurrency, cryptography, currency, current, decentralized, digital, electronic, exchange, finance, financial, instant, internet, isolated, market, metal, metallic, miner, mining, money, payment, physical, price, processors, safe, safety, silver, space, symbol, virtual, zcash, zec,