BlackRock, Fidelity, Grayscale, etc. have started advertising on Google

According to the latest report from the Financial Times, some spot Bitcoin ETF issuers, including BlackRock, Fidelity, Grayscale, Invesco, and Bitwise, have started advertising on Google and launched an online advertising "lightning war" to increase their marketing efforts and participate in a cost war. However, Google currently refuses to disclose any spending data on Bitcoin ETF advertising.