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Significant Accounting Policies - Summary of Trust's Assets Accounted at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Jul. 21, 2024
Assets
Investment in ether, at fair value	$ 173,794	$ 404,529	$ 0
Level 1
Assets
Investment in ether, at fair value	173,794	404,529
Level 2
Assets
Investment in ether, at fair value	0	0
Level 3
Assets
Investment in ether, at fair value	$ 0	$ 0

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Fair value of investment in security owned.

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