Entity Addresses, Address Type [Axis] Business Contact [Member] Award Type [Axis] Restricted Stock Units (RSUs) [Member] Unrestricted Stock Units RSU [Member] Fair Value Hierarchy and NAV [Axis] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Investment Type [Axis] On Investment in Bitcoin [Member] Qualitative and Quantitative Information, Transferor's Continuing Involvement, Transferred Financial Assets, by Transfer or Transferee [Axis] Resulting from the Change in Liabilities Denominated In Bitcoin [Member] Related and Nonrelated Parties [Axis] Sponsor [Member] Subsequent Event Type [Axis] Subsequent Event [Member] Entity Addresses [Table] Entity Addresses [Line Items] Document Type Amendment Flag Amendment Description Document Registration Statement Document Annual Report Document Quarterly Report Document Transition Report Document Shell Company Report Document Shell Company Event Date Document Period Start Date Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Current Fiscal Year End Date Entity File Number Entity Registrant Name Entity Central Index Key Entity Primary SIC Number Entity Tax Identification Number Entity Incorporation, State or Country Code Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Three Entity Address, City or Town Entity Address, State or Province Entity Address, Country Entity Address, Postal Zip Code Country Region City Area Code Local Phone Number Extension Written Communications Soliciting Material Pre-commencement Tender Offer Pre-commencement Issuer Tender Offer Title of 12(b) Security No Trading Symbol Flag Trading Symbol Security Exchange Name Title of 12(g) Security Security Reporting Obligation Annual Information Form Audited Annual Financial Statements Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Elected Not To Use the Extended Transition Period Document Accounting Standard Other Reporting Standard Item Number Entity Shell Company Entity Public Float Entity Bankruptcy Proceedings, Reporting Current Entity Common Stock, Shares Outstanding Documents Incorporated by Reference [Text Block] Contact Personnel Name Statement of Financial Position [Abstract] Assets Investment in Bitcoin, at fair value (cost $72,711,093 and $72,751,781, respectively) Cash Other assets Total assets Liabilities Management Fee payable Due to Sponsor Other payable Total liabilities Net assets Net assets Paid-in capital Redemptions Accumulated net investment loss Accumulated net realized gain on investment in Bitcoin Accumulated net change in unrealized appreciation on  investment in Bitcoin Units issued, no par value (unlimited Units authorized) Units outstanding, no par value (unlimited Units authorized) Net asset value per Unit Schedule of Investments [Abstract] Investment in Bitcoin, cost Units, par value Units authorized Schedules Of Investment Investment in Bitcoin, at fair value, Units Investment in Bitcoin, at fair value, Fair Value Investment in Bitcoin, at fair value, Percentage of Net Assets Liabilities, less cash and other assets (in Dollars) Liabilities, less cash and other assets Net assets (in Dollars) Net assets Income Statement [Abstract] Expenses Management Fee Professional fees Custodian fees Other Total expenses Net investment loss Net realized gain and net change in unrealized appreciation (depreciation) on investment in Bitcoin Net realized gain on investment in Bitcoin Net change in unrealized appreciation (depreciation) on investment in Bitcoin Total net realized gain and net change in unrealized appreciation (depreciation) on investment in Bitcoin Net increase (decrease) in net assets resulting from operations Statement of Cash Flows [Abstract] Increase (decrease) in net assets from operations Net investment loss Net increase (decrease) in net assets resulting from operations Decrease in net assets from capital transactions Redemptions Net decrease in net assets resulting from capital transactions Net increase (decrease) in net assets Net assets at the beginning of the period Net assets at the end of the period Change in units issued and outstanding Shares issued at the beginning of the year Shares outstanding at the beginning of the year Redemptions Shares issued at the end of the year Shares outstanding at the end of the year Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization Accounting Policies [Abstract] Summary of Significant Accounting Policies Fair Value Disclosures [Abstract] Fair Value of Bitcoin Income Tax Disclosure [Abstract] Income Taxes Related Party Transactions [Abstract] Related Parties Risks and Uncertainties [Abstract] Risks and Uncertainties Indemnifications Indemnifications Investment Company [Abstract] Financial Highlights Subsequent Events [Abstract] Subsequent Events Basis of Presentation Recently Issued Accounting Pronouncement Use of Estimates Cash Subscriptions and Redemptions of Units Investment Transactions and Revenue Recognition Management Fee Trust Expenses Fair Value Measurements Definition of Net Asset Value Segment Reporting Schedule of Fair Value, Assets Measured on Recurring Basis Schedule of Investment Holdings of Investments Schedule of Investment Company Financial Highlights Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Units sold in offering Number of units sold in offering Units issued Units oustanding Assumed expenses Fair Value, off-Balance-Sheet Risk [Table] Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] Investment in bitcoin, number of bitcoin Investment in bitcoin, per bitcoin fair value Investment in bitcoin, at fair value, units Schedule of Investments [Table] Schedule of Investments [Line Items] Beginning balance, Bitcoin Beginning balance, Fair Value Bitcoin distributed for redemptions, Bitcoin Bitcoin distributed for redemptions, Fair Value Bitcoin distributed for Management Fee, related party, Bitcoin Bitcoin distributed for Management Fee, related party, Fair Value Bitcoin distributed for other fees, Bitcoin Bitcoin distributed for other fees, Fair Value Net realized gain on investment in Bitcoin, Fair Value Net change in unrealized appreciation on investment in Bitcoin, Fair Value Ending balance, Bitcoin Ending balance, Fair Value Realized investment gains (loss) Unrealized gain (loss) on investments Investment owned, unrecognized unrealized appreciation (depreciation), net Related Party Transaction [Table] Related Party Transaction [Line Items] Expense reimbursement Unreimbursed expenses Management fees Management fee payable Related party transaction, description of transaction Net asset value per unit at beginning of year Net realized gain and change in unrealized appreciation on investment Net investment loss Net increase in net assets resulting from operations Net asset value per unit at end of year Total return Ratios to average net asset value, expenses Ratios to average net asset value, net investment loss Subsequent Event [Table] Subsequent Event [Line Items] Fair value of bitcoin Net assets abstract. Accumulated net investment loss Accumulated net realized gain loss on investment in bitcoin Accumulated net change in unrealized appreciation on investment in bitcoin. Redemptions Investment in bitcoin number of bitcoin. Liabilities less cash and other assets. Liabilities less cash and other assets as a percentage Investment assets less investment liabilities percent of net assets Net realized gain and net change in unrealized appreciation depreciation on investment in bitcoin abstract. Change in units issued and outstanding abstract Change in redemptions Decrease In Net Assets From Capital Transactions Abstract Decrease in redemptions Net decrease in net assets resulting from capital transactions Net increase in net assets Subscriptions And Redemptions Of Units [Policy Text Block] Unrestricted Stock Units RSU [Member] Trust Expenses [Policy Text Block] Definition Of Net Asset Value [Policy Text Block] Investment in bitcoin per bitcoin fair value. On Investment in Bitcoin [Member] Investment owned balance contracts distributed custody and index fees fair value Investment owned balance contracts distributed related party fair value Investment owned balance contracts distributed redemptions fair value Investment owned balance contracts distributed custody and index fees Investment owned balance contracts distributed related party. Investment owned balance contracts distributed redemptions Resulting from the Change in Liabilities Denominated In Bitcoin [Member] Sponsor [Member] Indemnifications [Text Block] Fair value of bitcoin Unreimbursed expenses Investment owned unrecognized unrealized appreciation on investment Investment owned unrecognized unrealized appreciation depreciation Assets [Default Label] Liabilities [Default Label] InvestmentAssetsLessInvestmentLiabilitiesPercentOfNetAssets Operating Costs and Expenses Gain (Loss) on Investments Net Income (Loss) Attributable to Parent Increase (Decrease) in Operating Assets Decrease in redemptions Net decrease in net assets resulting from capital transactions Net increase in net assets ChangeInRedemptions Indemnifications [Text Block] Cash and Cash Equivalents, Policy [Policy Text Block] Management and Investment Advisory Fees, Policy [Policy Text Block] Investment Owned, Balance, Contracts Investment Company, Investment Income (Loss), Per Share, Basic