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Statement of Changes in Net Assets (Unaudited) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Net increase from operations        
Net investment loss $ (63,571)
Net realized gain from investment in bitcoin 19,703,050 4,496,902 53,249,774 13,532,331
Net change in unrealized appreciation (depreciation) from investments in bitcoin 84,089,218 11,414,566 243,902,664 24,957,145
Net increase in net assets resulting from operations 103,792,268 15,911,468 297,152,438 38,425,905
Capital Share transactions        
Contributions for shares issued 319,598,577 224,740,268 659,825,469 888,110,863
Withdrawals for shares redeemed (63,429,642) (96,022,801) (198,105,870) (167,260,115)
Net increase in capital share transactions 256,168,935 128,717,467 461,719,599 720,850,748
Net increase in net assets 359,961,203 144,628,935 758,872,037 759,276,653
Net assets:        
Beginning of period 1,679,361,166 614,747,718 1,280,450,332 100,000
End of period $ 2,039,322,369 $ 759,376,653 $ 2,039,322,369 $ 759,376,653