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Schedule of Investment
$ in Thousands
 12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Schedule of Investment [Line Items]    
Fair Value $ 3,305,323 $ 4,352,288
% of Net Assets 100.00% 100.00%
Investment in bitcoin    
Schedule of Investment [Line Items]    
Quantity of Bitcoin 37,769.3458 46,607.1028
Cost $ 3,479,646 $ 3,077,870
Fair Value $ 3,305,394 $ 4,352,648
% of Net Assets 100.00% 100.01%
Total investments    
Schedule of Investment [Line Items]    
Quantity of Bitcoin 37,769.3458 46,607.1028
Cost $ 3,479,646 $ 3,077,870
Fair Value $ 3,305,394 $ 4,352,648
% of Net Assets 100.00% 100.01%
Liabilities in excess of other assets    
Schedule of Investment [Line Items]    
Fair Value $ (71) $ (360)
% of Net Assets (0.01%)