75000 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 75010 - Statement - Statements of Assets and Liabilities link:presentationLink link:calculationLink link:definitionLink 75020 - Statement - Statements of Assets and Liabilities2 link:presentationLink link:calculationLink link:definitionLink 75030 - Statement - Statements of Assets and Liabilities (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 75040 - Statement - Schedules of Investment link:presentationLink link:calculationLink link:definitionLink 75050 - Statement - Statements of Operations link:presentationLink link:calculationLink link:definitionLink 75060 - Statement - Statement of Changes in Net Assets link:presentationLink link:calculationLink link:definitionLink 995455 - Disclosure - Organization link:presentationLink link:calculationLink link:definitionLink 995465 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 995475 - Disclosure - Fair Value of ETC link:presentationLink link:calculationLink link:definitionLink 995485 - Disclosure - Creations and Redemptions of Shares link:presentationLink link:calculationLink link:definitionLink 995495 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 995505 - Disclosure - Related Parties link:presentationLink link:calculationLink link:definitionLink 995515 - Disclosure - Concentration Risk link:presentationLink link:calculationLink link:definitionLink 995525 - Disclosure - Financial Highlights Per Share Performance link:presentationLink link:calculationLink link:definitionLink 995535 - Disclosure - Indemnifications link:presentationLink link:calculationLink link:definitionLink 995545 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 995555 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 995565 - Disclosure - Summary of Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 995575 - Disclosure - Fair Value of ETC (Tables) link:presentationLink link:calculationLink link:definitionLink 995585 - Disclosure - Financial Highlights Per Share Performance (Tables) link:presentationLink link:calculationLink link:definitionLink 995595 - Disclosure - Organization - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995605 - Disclosure - Summary of Significant Accounting Policies - Summary of valuation techniques and observable inputs can vary by investment (Detail) link:presentationLink link:calculationLink link:definitionLink 995615 - Disclosure - Fair Value of ETC - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995625 - Disclosure - Fair Value of ETC - Summary of changes in quantity of ETC and the respective fair value (Detail) link:presentationLink link:calculationLink link:definitionLink 995635 - Disclosure - Creations and Redemptions of Shares - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995645 - Disclosure - Income Taxes - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995655 - Disclosure - Related Parties - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 995665 - Disclosure - Financial Highlights Per Share Performance - Summary of Per Share Data (Detail) link:presentationLink link:calculationLink link:definitionLink 995675 - Disclosure - Subsequent Events - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Summary of Fair Value Estimates Equity [Abstract] Entity Current Reporting Status Entity Current Reporting Status Operating Expenses [Abstract] Expenses: Fair Value, Inputs, Level 2 [Member] Level 2 Investment Company, Financial Highlights [Table Text Block] Summary of per share data Summary of Per Share Data Document Fiscal Period Focus Document Fiscal Period Focus Entity Shell Company Entity Shell Company Segment Reporting, Policy [Policy Text Block] Segment Reporting Net Assets End of period Beginning of period Net assets Common Stock, Shares, Issued Shares issued and outstanding, no par value (unlimited Shares authorized) Statement [Table] Investment Company, Investment Income (Loss) from Operations, Per Share Net decrease in net assets resulting from operations Statement [Line Items] Revenue from Contract with Customer [Policy Text Block] Investment Transactions and Revenue Recognition Entity Filer Category Entity Filer Category Investment Owned, Balance, Contracts Investment Owned, Balance Investment Owned, Balance Investments owned new contributions. Investments Owned New Contributions ETC contributed ETC fair value per share. E T C Fair Value Per Share ETC fair value per share Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Federal income tax rate Subsequent Event [Line Items] Subsequent Event [Line Items] Related Party Related Party [Member] Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Concentration Risk Disclosure [Text Block] Concentration Risk Total return Investment Company, Total Return (Decrease) increase in net assets from operations. Decrease Increase In Net Assets From Operations [Abstract] Decrease in net assets from operations: Entity Small Business Entity Small Business Organization, Consolidation and Presentation of Financial Statements [Abstract] Amendment Flag Amendment Flag Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Address, Address Line One Entity Address, Address Line One Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV Investment Company, Investment Income (Loss) from Operations, Per Share [Abstract] Net increase (decrease) in net assets from investment operations: Net decrease in net assets from investment operations: Investment Type [Axis] Investment Type Common share equivalent of ETC. Common Share Equivalent Of E T C Share represented as ETC Document Type Document Type Schedule Of Changes In Net Assets [Abstract] Schedule Of Changes In Net Assets Number of Authorized Shares Not Disclosed Number of authorized shares not disclosed. Number of authorized shares not disclosed Common units issued, minimum basket. Common Units Issued Minimum Basket Common Units Issued, Minimum Basket Common units issued, minimum basket Subsidiary, Ownership Percentage, Parent Percentage of minority interest owned Net increase in Shares Stock Issued During Period, Shares, Period Increase (Decrease) Stock Issued During Period, Shares, Period Increase (Decrease), Total Entity Central Index Key Entity Central Index Key Sponsor's Parent [Member]. Sponsor Parent [Member] Sponsor's Parent Subsequent Event Type [Domain] Subsequent Event Type Operating Costs and Expenses Sponsor's Fees incurred Operating Costs and Expenses, Total Liabilities [Abstract] Liabilities: Realized Investment Gains (Losses) Realized Investment Gains (Losses), Total Net realized gain on investment in Ethereum Classic Net realized gain on investment in ETC Ownership [Domain] Ownership Current Fiscal Year End Date Current Fiscal Year End Date Document Quarterly Report Document Quarterly Report Sponsor [Member]. Sponsor [Member] Sponsor Entity Address, State or Province Entity Address, State or Province Investment Company, Investment Income (Loss) Ratio Net investment loss Increase Decrease In Net Assets. Increase Decrease In Net Assets Total decrease in net assets from operations and capital share transactions Concentration Risk [Abstract] Investment owned balance contracts net realized (loss) gain. Investment owned balance contracts net realized (loss) gain Net realized gain on investment in ETC Coinbase Inc. [Member]. Coinbase Inc [Member] Coinbase Inc Subsequent Event [Member] Subsequent Event Indemnifications Disclosure [Abstract]. Indemnifications Disclosure [Abstract] Indemnifications Disclosure [Text Block]. Indemnifications Disclosure [Text Block] Indemnifications Related Party Transaction [Axis] Additional trust expenses paid by sponsor. Additional Trust Expenses Paid By Sponsor Additional trust expenses paid by sponsor Sponsor Fees Sponsor's Fee, related party Investment owned, balance, contracts distributed. Investment Owned Balance Contracts Distributed ETC distributed for Sponsor's Fee, related party Minimum [Member] Minimum Fair Value, Inputs, Level 3 [Member] Level 3 Investment Company, Gain (Loss) on Investment, Per Share Net realized and unrealized gain (loss) Net realized and unrealized loss Unrealized Gain (Loss) on Investments, Total Net change in unrealized appreciation (depreciation) on investment in ETC Net change in unrealized appreciation/depreciation on investment in ETC Net change in unrealized appreciation/depreciation on investment in ETC Related Party Transactions [Abstract] Common Stock, Other Shares, Outstanding Shares issued and outstanding, no par value (unlimited Shares authorized) Shares, Outstanding Shares outstanding at end of period Shares outstanding at beginning of period Investment owned, balance, shares held by custodian. Investment Owned Balance Shares Held By Custodian Investment owned balance shares held by custodian Subsequent Events [Text Block] Subsequent Events Related Party Transactions Disclosure [Text Block] Related Parties Common Stock Value Shares Authorized Common Stock Value, Shares Authorized. Common Stock Value, Shares Authorized Entity Address, Address Line Two Entity Address, Address Line Two Fair Value of ETC Fair Value Disclosures [Text Block] Investment in ETC Investment Owned, Fair Value Investment Owned, Fair Value Investment in ETC, at fair value (cost $82,445 and $82,955 as of March 31, 2026 and December 31, 2025, respectively) Fair Value Net Realized And Unrealized Gain Loss Net Realized And Unrealized Gain Loss [Abstract] Net realized and unrealized loss from: Investment in Ethereum Classic. Investment In Ethereum Classic [Member] Investment in ETC Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Schedule of Investments [Line Items] Schedule Of Investments [Line Items] Related and Nonrelated Parties [Axis] Related Party Entity Address, City or Town Entity Address, City or Town Investment [Member] Investment. Total Investment Investment Owned, Cost Cost Investment in ETC, at fair value (cost $82,445 and $82,955 as of March 31, 2026 and December 31, 2025, respectively) Statistical Measurement [Domain] Statistical Measurement Document Period End Date Document Period End Date Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV Statement of Financial Position [Abstract] Related Party Transaction, Rate Related party sponsor fee percentage Percentage of managers fee. Percentage Of Managers Fee Percentage of manager's fee Liabilities Total liabilities Securities Act File Number Entity File Number Quantity of Ethereum Classic. Quantity Of Ethereum Classic Quantity of ETC Cover [Abstract] Investments [Domain] Investments Investment owned balance contracts net change in unrealized (depreciation) appreciation. Investment owned balance contracts net change in unrealized (depreciation) appreciation Net change in unrealized appreciation/depreciation on investment in ETC Number of Incidental Rights distributed Number Of Incidental Rights Distributed In Payment Of Sponsors Fee Number of incidental rights distributed in payment of sponsors fee. Subsequent Event [Table] Subsequent Event [Table] Schedule of Investments [Table] Schedule Of Investments [Table] New Accounting Pronouncements, Policy [Policy Text Block] Recently Issued Accounting Pronouncements Ownership [Axis] Ownership Ethereum classic fair value per share. Ethereum Classic Fair Value Per Share Ethereum classic Fair Value Per Share Investment, Type [Extensible Enumeration] Investment Holdings, Schedule of Investments [Table Text Block] Investment Holdings, Schedule of Investments Document Transition Report Document Transition Report Change in shares outstanding. Change In Shares Outstanding [Abstract] Change in Shares outstanding: Schedule of Investments [Abstract] Statement of Cash Flows [Abstract] Stock Issued During Period, Value, New Issues Shares issued Equity [Text Block] Creations and Redemptions of Shares Net decrease in net assets resulting from operations Investment Owned, Balance, Contracts New Contributions. Investment Owned Balance Contracts New Contributions ETC contributed Non Sponsor Paid Expenses [Member] Non Sponsor Paid Expenses [Member] Non Sponsor Paid Expenses Assets [Abstract] Assets: Document Fiscal Year Focus Document Fiscal Year Focus Net Assets [Abstract] Net assets: Net Assets consists of: Net assets. Fair Value Measurement, Policy [Policy Text Block] Fair Value Measurement Fair Value Disclosures [Abstract] Number of Incidental Rights held Number Of Incidental Rights Held Number of incidental rights held. Investment Owned, Net Assets, Percentage % of Net Assets Investment Income, Net Net investment loss Net investment loss Related and Nonrelated Parties [Domain] Related Party Income Tax Disclosure [Text Block] Income Taxes Income Tax Disclosure [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Trading Symbol Related Party Transaction [Table] Schedule Of Related Party Transactions By Related Party [Table] Subsequent Event Type [Axis] Subsequent Event Type Investment Company, Financial Highlights [Abstract] Entity Ex Transition Period Entity Ex Transition Period Accrued and unpaid Sponsor's Fees Sponsor's Fee payable, related party Accounts Payable Accounts Payable, Total Investment Company, Financial Highlights [Text Block] Financial Highlights Per Share Performance Value of shares purchased. Value Of Shares Purchased Value of shares purchased Investment Company, Investment Income (Loss), Per Share, Basic Net investment loss Investment Income, Net [Abstract] Investment income: Maximum [Member] Maximum Statistical Measurement [Axis] Statistical Measurement Related Party Transaction, Amounts of Transaction Related party maximum transaction in a fiscal year Investment Company, Financial Ratios [Abstract] Ratios to average net assets: Investment Company, Expense Ratio, after Fee Waiver and Incentive Fee Deduction Expenses Related Party Transaction [Line Items] Related Party Transaction [Line Items] Entity Registrant Name Entity Registrant Name Common Stock, Shares Held in Employee Trust, Shares Shares of the Trust, held by related parties Subsequent Events [Abstract] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Stockholders' Equity, Period Increase (Decrease) Net increase in net assets resulting from capital share transactions Subsequent event, date Subsequent Event, Date Gain (Loss) on Investments Net realized and unrealized loss on investment Net Asset Value Per Share Principal Market NAV, end of period Principal Market NAV per Share Principal Market NAV, beginning of period Assets Total assets Income Statement [Abstract] DCG. D C G [Member] D C G Fair Value of Financial Instruments, Policy [Policy Text Block] Principal Market and Fair Value Determination Stock Issued During Period, Shares, New Issues Shares issued Title of 12(g) Security Title of 12(g) Security City Area Code City Area Code Investment Income. Investment Income Investment income Investment Company, Financial Highlights [Roll Forward] Per Share Data: Fair Value, Inputs, Level 1 [Member] Level 1 Investments owned distributions. Investments Owned Distributions ETC distributed for Sponsor's Fee, related party Entity Interactive Data Current Entity Interactive Data Current Entity Tax Identification Number Entity Tax Identification Number Initial term of custodian agreement. Initial Term Of Custodian Agreement Initial term of custodian agreement Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Organization Increase in Net Assets From Capital Share Transactions. Increase In Net Assets From Capital Share Transactions [Abstract] Increase in net assets from capital share transactions: Local Phone Number Local Phone Number Related Party Transaction [Domain] Accounting Policies [Abstract] Common stock, shares authorized, unlimited Common Stock, Shares Authorized, Unlimited [Fixed List] Entity Emerging Growth Company Entity Emerging Growth Company