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Investments in Ether - Summary of Transactions and Earnings from Investments in Ether (Details) - USD ($)
 6 Months Ended 12 Months Ended
Dec. 31, 2024
Dec. 31, 2025
Schedule of Investments [Line Items]    
Opening Balance $ 0 $ 23,569,250
Purchases at Cost 30,217,342 38,907,990
Proceeds from Sales to Pay Sponsor Fee (16,462) (65,393)
Proceeds from Ether sold for Redemptions (10,748,206) (34,815,043)
Change in Unrealized Appreciation (Depreciation) 3,722,365 (340,579)
Net Realized Gain (Loss) on Investments in Ether Sold to pay Sponsor Fee (3,977) (11,077)
Net Realized Gain (Loss) on Investments in Ether Sold for Redemptions 398,188 (1,391,403)
Ending Balance $ 23,569,250 $ 25,853,745