Maybe I'm wrong, but this being a chapter 11 case, there is no need to file a proof of claim if you dont disagree with how HF scheduled your claim. You can check how your claim is already scheduled in the link from pmorici above. This is at least what I read online.
Only one point still trouble for me. Im listed in case 14-30866 a child of Case 14-30725 and i m not listed in
https://cases.processgeneral.com/cases/case/5/hashfast-technologies-llc/ Normal ??
Thanks for this answer ! i will look update here !