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Financial Highlights - Schedule of Financial Highlights (Details) - $ / shares
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Schedule Of Financial Highlights Abstract        
Net asset value per share, beginning of period [1] $ 30.33 $ 17.52 $ 26.4 $ 12.5
From investment operations:        
Net investment loss [1],[2] 0 0 [3] 0 0 [3]
Net realized gain and change in unrealized appreciation/depreciation from investments in bitcoin [1],[4] 1.98 0.39 5.91 5.41
Total increase resulting from operations [1] 1.98 0.39 [2] 5.91 5.41
Net asset value per share, end of period [1] $ 32.31 $ 17.91 $ 32.31 $ 17.91
Total return [1],[5] 6.53% 2.26% 22.39% 43.28%
Expenses before fee waiver [1],[6] 0.20% 0.20% 0.20% 0.20%
Expenses after fee waiver [1],[6] 0.00% 0.00% 0.00% 0.02%
Net investment loss [1],[6] 0.00% 0.00% 0.00% (0.02%)
[1] On February 14, 2025 the Trust effected a 4 for 1 share split. Per share data prior to that date has been adjusted to reflect the share split.
[2] Net investment loss per share has been calculated based upon an average of daily shares outstanding.
[3] Amount rounds to less than $0.005.
[4] The amount shown for a share outstanding throughout the year may not agree with the change in the aggregate gains and losses for the period because of the timing of sales and repurchases of the Trust’s shares in relation to fluctuating market values for the Trust.
[5] Returns are not annualized and inc lude adjustments required by GAAP. Returns for financial statements purposes may differ from net asset values and performance reported elsewhere by the Trust.
[6] Annualized.