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Significant Accounting Policies - Schedule of Unobservable Inputs, Including the Trust’s Assumptions (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Assets    
Investment in bitcoin $ 3,305,394 $ 4,352,648
Level 1 [Member]    
Assets    
Investment in bitcoin 3,305,394 4,352,648
Level 2 [Member]    
Assets    
Investment in bitcoin
Level 3 [Member]    
Assets    
Investment in bitcoin