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Organization - Additional Information (Detail)			6 Months Ended	12 Months Ended	18 Months Ended
	Jul. 09, 2024 USD ($) $ / shares shares	Jun. 17, 2024 USD ($) shares	Dec. 31, 2024 USD ($) shares	Dec. 31, 2025 USD ($) shares	Dec. 31, 2025 Creationbasket shares
Organization [Line Items]
Shares issued (in shares) | shares			1,017,000	1,110,000
Stock issued | $			$ 30,317,890	$ 38,909,069
Number of shares issued per Creation Basket | shares					5,000
Minimum number of Creation Baskets that can be purchased | Creationbasket					1
Redemption value | $			$ 10,848,754	$ 34,816,121
Initial Seed Shares
Organization [Line Items]
Shares issued (in shares) | shares		4,000
Stock issued | $		$ 100,000
Share issued price per share | $ / shares	$ 25
Redemption value | $	$ 100,000
Creation Baskets
Organization [Line Items]
Number of creation basket shares | shares	3,000
Creation Baskets | Ethereum
Organization [Line Items]
Number of ethereums, per share | $ / shares	$ 30.042

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