Ark Invest founder Cathie Wood recently sent a major signal: the US government is expected to start purchasing Bitcoin in the near future to build a national-level reserve asset. This view comes from one of the most influential leaders of the world's top technology investment firms and reflects a potential trend of Bitcoin shifting from a market asset to a strategic reserve. If the US government indeed initiates such a move, it would mark Bitcoin's recognition at the highest level of asset approval and could have a profound impact on the entire cryptocurrency market. It also indicates that institutional investors and policymakers are re-evaluating the role of digital assets in national economic strategies.