There are no logs - the company is bankrupt and records are not available. Best I have is a screenshot showing my account total when they went bankrupt. I had GSUD converted to BTC with not input from me as a function of the bankruptcy. In this case there is no way to track the transactions even through Koinly etc hence there is no evidence of any kind of cost basis. The mere fact I'm receiving celsius-related funds is the best proof I have that I'm just recovering my own money (i.e. this is not a gain).
Practically, I'm not sure that mailing a physical copy 1099 (as turbotax demands) will do anything clarify any of this for the IRS, when I myself have spent days try to figure out the situation. A few hundred thousand people are dealing with this same situation.
