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Schedule of information about Trust's assets and liabilities measured at fair value (Details) - USD ($)
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total Investments $ 429,823,599 $ 505,489,906    
Bitcoin [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Bitcoin 429,823,599 505,489,906 $ 480,384,508 $ 826,306,338
Fair Value, Inputs, Level 1 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total Investments 429,823,599 505,489,906    
Fair Value, Inputs, Level 1 [Member] | Bitcoin [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Bitcoin 429,823,599 505,489,906    
Fair Value, Inputs, Level 2 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total Investments    
Fair Value, Inputs, Level 2 [Member] | Bitcoin [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Bitcoin    
Fair Value, Inputs, Level 3 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Total Investments    
Fair Value, Inputs, Level 3 [Member] | Bitcoin [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Bitcoin