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Note 3 - Summary of Significant Accounting Policies - Related Party Transactions (Details) - Related Party [Member] - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	[1]	Jun. 30, 2023	Jun. 30, 2022	[1]
Recognized Related Party Transactions	$ 731,376	$ 871,921		$ 1,322,979	$ 1,417,630
Waived Related Party Transactions	$ 44,857	$ 358,002		$ 68,722	$ 479,081
[1] The Hashdex Bitcoin Futures ETF commenced operations on September 15, 2022.

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Amount of expenses waived.

+ References

No definition available.

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- Definition

Costs of sales and operating expenses for the period incurred from transactions with related parties.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

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