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Significant Accounting Policies - Summary of Trust's Assets Accounted at Fair Value (Details) - Investments in Crypto Assets, at Fair Value - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Assets	$ 3,367,647	$ 3,762,723
Level 1
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Assets	3,367,647	3,762,723
Level 2
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Assets	0	0
Level 3
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Assets	$ 0	$ 0

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