BlackRock and Bitwise have submitted amended S1 forms to the SEC, indicating that they are working to address any concerns raised by the regulator. It is not clear what specific information was requested by the SEC, but analysts had predicted changes following recent meetings. BlackRock's updated filing included 21 notable amendments, covering topics such as security, risks, disclosures, and the structure of the Trust. The SEC is expected to make a decision on approving spot bitcoin ETFs by Jan 10th, with a 90% chance of approval according to Bloomberg analysts.