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Significant Accounting Policies - Schedule of Changes in Quantity of Bitcoin (Details)
 9 Months Ended 12 Months Ended
Sep. 30, 2025
USD ($)
shares
Dec. 31, 2024
USD ($)
shares
Quantity of Bitcoin [Member]    
Significant Accounting Policies - Schedule of Changes in Quantity of Bitcoin (Details) [Line Items]    
Balance, Shares, beginning of period 13,716.83
Balance, Shares, end of period 17,853.09 13,716.83
Bitcoin purchased, Shares 6,179.64 17,847.12
Bitcoin sold, Shares (2,043.38) (4,130.29)
Net change in unrealized appreciation (depreciation) from investment in bitcoin, Shares (in Shares) | shares
Net realized gain on investment in bitcoin (in Shares) | shares
Fair Value [Member]    
Significant Accounting Policies - Schedule of Changes in Quantity of Bitcoin (Details) [Line Items]    
Balance, beginning of period $ 1,280,450,332
Balance, end of period 2,039,322,369 1,280,450,332
Bitcoin purchased 659,825,469 1,145,131,271
Bitcoin sold (198,105,870) (283,712,958)
Net change in unrealized appreciation (depreciation) from investment in bitcoin 243,902,664 384,606,755
Net realized gain on investment in bitcoin $ 53,249,774 $ 34,425,264