The SEC recently postponed the approval of five cryptocurrency ETFs, and this decision isn't particularly surprising. The SEC is known for its caution, especially when it comes to volatile assets like altcoins. Their approach has always been careful because, ultimately, they are more concerned that the entire cryptocurrency market is not stable enough and that the regulatory framework has not fully kept up. However, if I were to say which ETF is most likely to be approved, I believe it would be one centered around Solana (SOL). Why? First, Solana's technology has developed rapidly in recent years, with its high throughput and low transaction costs making it stand out in the market, particularly in the decentralized finance (DeFi) and NFT sectors, where it has strong use cases. Secondly, Solana's ecosystem is continuously growing, with an influx of various projects and developers making it seem more 'reliable' than many other altcoins. Compared to some other cryptocurrencies, Solana's stability and innovation may appeal more to the SEC. If the Solana ETF can pass smoothly, it would be a significant breakthrough for the cryptocurrency market, marking the entry of more mainstream and regulated digital assets into traditional investment spheres. As for the SEC's caution, I believe it is precisely to avoid an overheated market and regulatory lag, to protect investors' interests, and to prevent these emerging assets from bringing unforeseen risks to the market. Once this process breaks through, it will be the opening of an investment opportunity. I hope the SEC will expedite the process and provide the market with a clear direction.