Ключевые слова: agreement, axe, background, bit, bitcoin, black, blockchain, business, button, coin, color, colorful, computer, concept, contract, contracts, crypto, cryptocoin, cryptocurrency, currency, design, digital, document, electronic, exchange, farm, finance, graphic, icon, illustration, industry, internet, isolated, mine, miner, mining, money, neon, network, pick, pickax, set, sign, symbol, technology, tool, virtual, web,