The US Securities and Exchange Commission recently issued its approval for a series of spot Bitcoin trading funds, which opens a new era for investment opportunities, reinforces the growing importance of digital currencies in the markets for a wide range of investors, and enhances the growing position of digital assets in traditional wallets.SEC approval and rule changesThe SEC's approval extends to 19b-4 filings filed by prominent financial entities, including ARK 21Shares, Invesco Galaxy, VanEck, WisdomTree, Fidelity, Valkyrie, BlackRock, Grayscale, Bitwise, Hashdex, and Franklin Templeton.This endorsement represents a critical acknowledgment of rule changes that make it easier for Bitcoin spot ETFs to list and trade on their exchanges. However, not all SEC commissioners were relieved. Here are their most prominent statements that reflect their reactions.The Chairman of the Securities and Exchange Commission, Gary Gensler, affirmed the committee’s commitment to working within a frameworkThe law and respect for judicial interpretations. He also acknowledged the change in circumstances, pointing to a court ruling that reversed the commission's rejection of Grayscale's submission for a proposed spot bitcoin exchange-traded fund.“Circumstances have changed,” Gensler stated, leading to the approval of spot Bitcoin ETPs.Gensler explained that the SEC evaluates rule requests based on their consistency with the Exchange Act and regulations, with an emphasis on investor protection and the public interest. He particularly highlighted that the approval is limited to ETPs that include commodities such as “Bitcoin,” and does not indicate the committee’s willingness to approve digital assets considered securities.