[The three major U.S. stock indexes opened lower, blockchain concept stocks showed mixed performance] At the opening of the U.S. stock market, the Dow Jones Industrial Average fell 0.19%, the S&P 500 Index fell 0.43%, and the Nasdaq Composite Index fell 0.75%. Precious metal prices plunged during the day, and mining stocks generally opened lower. Blockchain concept stocks showed mixed performance, with CRCL (Circle) up about 1.7%; MSTR (Strategy) up about 2%; COIN (Coinbase) up about 1%.