The three major U.S. stock indexes opened lower, and blockchain concept stocks fell across the board

According to Golden Finance, the three major U.S. stock indexes opened lower, with the Dow Jones Industrial Average down 0.38%, the Nasdaq down 0.19%, and the S&P 500 down 0.25%. Bitcoin once fell below $67,000 during today's trading session. Blockchain concept stocks fell across the board, with Canaan Technology falling more than 4%, and Marathon Digital and MicroStrategy falling more than 3%.