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Fair Value of Bitcoin - Additional Information (Details) | Mar. 31, 2025 Bitcoin $ / shares | Dec. 31, 2024 Bitcoin
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Investment owned balance shares held by custodian | Bitcoin | 40,595.02889855 | 38,012.91129948
Bitcoin fair value per share | $ / shares | $ 82,443.85 |

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- Definition Bitcoin fair value per share + References No definition available. + Details
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Namespace Prefix: | btc_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

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- Definition Investment owned, balance, shares held by custodian. + References No definition available. + Details
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Namespace Prefix: | btc_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

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- 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. + References No definition available. + Details
Name: | us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration