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Quarterly Statement of Operations (unaudited) - Schedule of Quarterly Statement of Operations (Unaudited) (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2023
Dec. 31, 2025
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Schedule of Quarterly Statement of Operations (Unaudited) [Abstract]                      
Waiver and Reimbursement   $ (93) $ (93) [1]
Sponsor fee   2,183 2,773 2,444 2,367 2,140 1,509 1,555 721 9,767 5,925 [1]
Net expenses   2,183 2,773 2,444 2,367 2,140 1,509 1,555 628 9,767 5,832 [1]
Net investment loss   (2,183) (2,773) (2,444) (2,367) (2,140) (1,509) (1,555) (628) (9,767) (5,832) [1]
Realized and change in unrealized gain (loss)                      
Net realized gain on investment in bitcoin sold to pay Sponsor fee   168 666 593 497 500 83 327 (85) 1,924 825 [1]
Net realized gain on investment in bitcoin sold for redemptions 116,916 456,495 339,579 321,579 433,421 53,132 135,325 1,234,569 621,878 [1]
Net change in unrealized appreciation (depreciation) on investment in bitcoin (1,264,945) (136,721) 859,932 (907,296) 978,375 (5,609) (543,311) 845,323 (1,449,030) 1,274,778 [1]
Net realized and change in unrealized gain (loss)   (1,147,861) 320,440 1,200,104 (585,220) 1,412,296 47,606 (407,659) 845,238 (212,537) 1,897,481
Net increase (decrease) in net assets resulting from operations   $ (1,150,044) $ 317,667 $ 1,197,660 $ (587,587) $ 1,410,156 $ 46,097 $ (409,214) $ 844,610 $ (222,304) $ 1,891,649 [1]
[1] No comparative statement for 2023 has been provided as 2024 is the first fiscal year of the Trust’s operations