Note 3 - Summary of Significant Accounting Policies - Hashdex Bitcoin Futures ETF (Details Textual)	4 Months Ended	12 Months Ended
	Dec. 31, 2022 USD ($) shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total		$ 0	$ 0	$ 0	$ 0
Money Market Funds, at Carrying Value	$ 188,640,417	$ 188,640,417	$ 32,968,833	$ 61,121,678
Hashdex Bitcoin Futures ETF [Member]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total	$ 0
Authorized Purchaser, Minimum Level of Creation Baskets, Shares (in shares) | shares	10,000	10,000
Authorized Purchaser, Redemption Baskets, Minimum Blocks of Shares (in shares) | shares	10,000	10,000
Minimum Level of Shares Per Redemption Basket (in shares) | shares	50,000	50,000
Minimum Number of RedemptionBaskets	5	5
Money Market Funds, at Carrying Value	$ 701,969	$ 701,969
Hashdex Bitcoin Futures ETF [Member] | Teucrium Trading, LLC [Member]
Management Fee, Percentage of Average Daily Net Assets	0.94%	0.94%