According to the Daily Planet, Grayscale recently submitted a new registration document to the US SEC, planning to expand its GBTC advertising campaign for retail investors. The text of the advertisement stated that GBTC is the industry's largest Bitcoin investment tool, allowing investors to gain Bitcoin exposure in a familiar investment structure and benefit from its potential. It is reported that the SEC recently met with Grayscale to discuss the potential ETF conversion of GBTC. Previously, the Court of Appeals for the District of Columbia Circuit urged the SEC to reconsider Grayscale's application to convert its flagship GBTC fund into a spot Bitcoin ETF. Google is about to update its crypto advertising policy, which is expected to take effect in the same month that the US approves the spot Bitcoin ETF. Although it is not clear whether the ETF meets Google's definition of "cryptocurrency trust", the policy update will allow Google-certified advertisers to promote these products, provided that they meet the company's requirements.