The U.S. Securities and Exchange Commission (SEC) has once again postponed the spot ETF proposals for Solana and Dogecoin submitted by Grayscale. At the same time, the SEC has begun soliciting public comments on BlackRock's physical redemption mechanism for its Bitcoin ETF (in-kind redemptions). This move indicates that the regulatory body has not rejected the proposals but is weighing the long-term regulatory framework and technical details. Although the market's reaction has been calm, investors still have confidence in the long-term approval of these ETFs.