SOL spot ETF was approved as early as mid-March. Cryptocurrency reserves and indexes may become the trend of the times in the Trump era. Since the US election, the Trump administration has shown a cryptocurrency-friendly stance that is completely different from the previous administration. As of press time, Trump stated on multiple social platforms that his digital asset executive order has instructed the presidential working group to advance the strategic reserve of cryptocurrencies, planning to establish a cryptocurrency reserve covering Bitcoin (BTC), Ethereum (ETH), Ripple (XRP), Solana (SOL) and Cardano (ADA). It can be foreseen that the US national cryptocurrency reserve has been steadily advancing and is believed to be officially established soon. How will the regulatory situation under the new US government go? Let's sort out the regulatory and policy attitudes shown by the new US government this year. Since mid-January, since former Chairman of the US Securities and Exchange Commission (SEC) Gary Gensler stepped down on January 20, the regulatory authorities' attitude towards the cryptocurrency business has taken a major turn. In addition, the policy adjustment is not only reflected in the crypto asset task force established on February 4, but also in the recent large-scale withdrawal of lawsuits against leading projects such as Coinbase and Uniswap, as well as the centralized acceptance of spot ETF applications for mainstream tokens such as XRP and SOL. The above series of measures also highly echo the Trump administration's positive attitude in the field of cryptocurrency. Is there any basis for the SOL spot ETF to be approved in mid-March? According to the current regulatory framework, the listing of cryptocurrency spot ETFs requires a double document review process. The applicant must first submit the securities registration document S-1 to the SEC for pre-registration, but the final effectiveness of the document must be based on the approval of the exchange rule adjustment document 19b-4. It is particularly important to clarify that 19b-4, as a core regulatory element, is subject to strict review procedures under Section 19(b) of the Securities Exchange Act - the SEC must announce the preliminary review results within 45 days after acceptance, and make a final decision within 240 days at the latest. Take Grayscale Solana Trust, which was the first to submit the SOL spot ETF 19b-4 form, as an example. The SEC accepted it on February 12. Although the SEC could reject or postpone it within the first 30 days, it could not directly approve it. Therefore, it was officially approved on the 30th day, that is, March 14. The statutory deadline for the preliminary review window will fall on March 29, which may release key regulatory signals. If the application is approved, other SOL spot ETFs (such as Bitwise Solana ETF, etc.) that adopt the same exchange rule adjustment plan may be released at the same time. Market liquidity expectations usually start pricing reactions at this stage. If we refer to the extreme approval case of Bitcoin spot ETF (i.e., it was approved on the 240th day after accepting 19b-4), the latest approval date of SOL spot ETF will be locked on October 10, 2025. However, under the current regulatory environment, we have reason to believe in a more efficient approval process. Crypto reserves and fairer crypto indexes may become the trend of the times. Coinbase CEO Brian Armstrong commented on the "Trump is promoting the cryptocurrency reserve plan" event, saying, "Bitcoin may be the best choice for strategic reserves. It is the simplest, and as the successor to gold, the story is the clearest. If people want more diversity, they can establish a market value-weighted index of crypto assets to maintain its fairness." Currently, the cryptocurrency indexes that have been launched and are running stably in the market include SoSoValue's index token MAG7.ssi. It is worth noting that within an hour of Trump's announcement to promote the national strategic reserve, MAG7.ssi rose by more than 18%. The reason is that the index token MAG7.ssi issued on the Base chain covers the top seven crypto assets in the market, including the five tokens mentioned by Trump this time. SoSoValue analysts said that crypto reserves and fairer crypto indexes may become the trend of the times. Among the seven major component coins covered by the MAG7.ssi index, which has attracted much attention this year, in addition to BTC and ETH, which already have spot ETFs in the market, there are four other component coins whose spot ETFs are steadily advancing in the SEC document approval. As an important opportunity to introduce external liquidity into the crypto market this year, MAG7.ssi is highly linked to the overall progress of the industry, and has extremely high investment value for both left-side and right-side traders. Option: It is worth noting that the compliance paths of special-shaped products are different: Grayscale Investments (Grayscale) uses an innovative model of converting over-the-counter trust funds into on-exchange ETFs. Although it uses S-3 instead of the conventional S-1 registration form, it still needs to meet the exchange rule adjustment requirements of 19b-4. In contrast, Rex Asset Management Company has taken a different approach and tried to achieve "regulatory arbitrage" through the N-1 form. This unconventional reporting strategy may face more complex procedural obstacles.