Ключевые слова: bitcoin, blockchain, btc, business, coin, concept, crypto, cryptocurrency, cryptography, currency, decentralized, design, digital, education, electronic, exchange, financial, gaming, halving, high, idea, international, investor, letter, market, metaphor, money, name, open source, payment, platform, public, risk, safety, scrabble, security, stock, system, technology, text, tile, trade, transaction, value, virtual, wallet, wooden, word,