Ключевые слова: abstract, background, bit, bitcoin, block chain, blockchain, blue, btc, bull, burning, business, cash, chart, coin, commerce, concept, crypto, crypto currency, cryptography, currency, design, digital, economy, electronic, element, exchange, finance, financial, flame, gold, golden, hard fork, inferno, light, lightning, market, mining, monetary, money, network, p2p, peer, sign, stock market, symbol, technology, trade, virtual,