Is Coinbase getting a 'Wells notice' from the SEC?

Could you elaborate on the rumors that Coinbase, a prominent cryptocurrency exchange, is facing a potential "Wells notice" from the Securities and Exchange Commission (SEC)? What exactly is a Wells notice, and what implications could it have for Coinbase and the broader cryptocurrency market? Is this an indication of increased regulatory scrutiny in the industry, or is it a unique case? What steps is Coinbase taking to address this situation, and what can investors and users expect in the coming weeks and months?