According to CoinDesk, Nasdaq has sent a letter to the US SEC's crypto working group, advising regulators to carefully classify digital assets and clarify regulatory "adjudicators". The document was signed by John Zecca, the head of regulatory affairs, proposing four categories: first, financial securities tokens (such as tokens linked to stocks, bonds, ETFs, which should be treated equally with underlying assets), which are subject to SEC supervision; The second is the digital asset investment contract (compliant with the revised Howey test token contract), which is subject to securities rules; Thirdly, digital asset commodities (meeting the definition of commodities in the United States) are under the jurisdiction of the CFTC; The fourth is other digital assets (not classified under the first three categories and not subject to mandatory securities or commodity rules). The SEC and CFTC will collaborate to clarify regulatory boundaries, and new cryptocurrency laws may serve as guidance. Nasdaq also suggests developing cross trading qualification certification for multi type asset processing platforms and emphasizes its credibility in the digital asset field. It calls for strengthening security constraints on companies that comprehensively handle investor activities and aligning with industry practices.