GMCI has launched the USA Select Index, designed to track the performance of U.S.-based cryptocurrencies, including XRP, SOL, and DOGE. The index aims to provide a comprehensive overview of these digital assets, reflecting their market movements. Since its inception in November, the index has reportedly increased by over 160%, highlighting a notable trend in the performance of these cryptocurrencies. The launch of this index aligns with the growing interest in digital currencies and their potential impact on the financial landscape.