How do I access my Year-End Tax papers from BlockFi now that the platform has been shut down!?

Ok so I received a notice from the IRS today that requires information from 2022 end of year forms regarding Blockfi, and of course, this happens 30 days after the platform shuts down. I had no indication that I would need these documents until literally today. I see no way to access them! This is a large problem for me for obvious reasons. The IRS doesn't have access to how much of the funds pulled out of the account were gains, which means I am now responsible for taxes on the entire amount, which is a terrifying thing. The letter came today and I just spoke with a person at the IRS and he said to simply gather my "Year-end tax documents" and that should clear it up, but it seems like there is no way to gather these papers anymore!