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Financial Highlights - Summary of Financial Highlights (Details) - $ / shares
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Investment Company, Financial Highlights [Abstract]    
Principal Market NAV per-share, beginning of period $ 50.85 $ 25
Investment Income (Loss) from Operation:    
Net investment loss [1] (0.11) (0.06)
Net realized and change in unrealized on investment in bitcoin (3.17) 25.91
Net change in net assets from operations (3.28) 25.85
Principal Market NAV per-share, end of period $ 47.57 $ 50.85
Total return, at net asset value [2] (6.45%) 103.40%
Ratios to average net assets    
Net investment loss (0.20%) (0.16%) [3],[4]
Gross expenses 0.20% 0.20% [3],[4]
Net expenses 0.20% 0.16% [3],[4]
[1] Calculated using average Shares outstanding.
[2] Total return is calculated based on the change in Principal Market NAV during the reporting period. An individual shareholder’s total return and ratios may vary from the above total return and ratios based on the timing of share transactions from the Trust.
[3] Annualized.
[4] For the six-month period starting on January 11, 2024, the day the Trust began accruing expenses, the Sponsor waived the entire Sponsor Fee on the first $1 billion of Trust assets through July 10, 2024.