Significant Accounting Policies - Summary of Trust's Assets Accounted at Fair Value (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|---|
| Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] | |||
| Investments in Crypto Assets, at fair value | $ 2,549,527 | $ 3,367,647 | $ 3,762,723 |
| Investments in Crypto Assets, at Fair Value | |||
| Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] | |||
| Assets | 2,549,527 | 3,367,647 | |
| Level 1 | Investments in Crypto Assets, at Fair Value | |||
| Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] | |||
| Assets | 2,549,527 | 3,367,647 | |
| Level 2 | Investments in Crypto Assets, at Fair Value | |||
| Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] | |||
| Assets | 0 | 0 | |
| Level 3 | Investments in Crypto Assets, at Fair Value | |||
| Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] | |||
| Assets | $ 0 | $ 0 |
| X | ||||||||||
- Definition Fair value portion of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Fair value of investment in security owned. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|