Bitwise and Hashdex have launched advertisements for their Spot Bitcoin ETFs, signaling confidence in potential SEC approval. Bitwise's ad features actor Jonathan Goldsmith, while Hashdex's ad uses a dump truck to differentiate crypto from other assets. The SEC's decision window is from Jan. 5 to Jan. 10, 2024. Samson Mow of JAN3 emphasized the importance of marketing for ETF issuers to grow assets and customer base. Speculation about future ads from BlackRock with Novak Djokovic and a Fidelity Super Bowl ad with Michael Saylor was also mentioned. Crypto analyst Kashif Raza noted the intense competition among Bitcoin Spot ETFs.