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Note 6 - Financial Highlights - Hashdex Bitcoin Futures ETF (Tables) | 6 Months Ended
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Jun. 30, 2023
Hashdex Bitcoin Futures ETF [Member] |
Notes Tables |
Investment Company, Financial Highlights [Table Text Block] |
|  | Three months ended |  |  | Six months ended |
|  | June 30, 2023 |  |  | June 30, 2023 |
Per Share Operation Performance |  |  |  |  |  |  |  |
Net asset value at beginning of period |  | $ | 36.76 |  |  | $ | 21.40 |
Income (loss) from investment operations: |  |  |  |  |  |  |  |
Investment income |  |  | 0.37 |  |  |  | 0.64 |
Net realized and unrealized gain on cryptocurrency futures contracts |  |  | 1.73 |  |  |  | 16.89 |
Total expenses, net |  |  | (0.08 | ) |  |  | (0.15 | )
Net increase in net asset value |  |  | 2.02 |  |  |  | 17.38 |
Net asset value at end of period |  | $ | 38.78 |  |  | $ | 38.78 |
Total Return |  |  | 5.46 | % |  |  | 81.16 | %
Ratios to Average Net Assets (Annualized) |  |  |  |  |  |  |  |
Total expenses |  |  | 12.67 | % |  |  | 15.87 | %
Total expenses, net |  |  | 0.94 | % |  |  | 0.94 | %
Net investment income |  |  | 3.18 | % |  |  | 3.02 | %

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- Definition Tabular disclosure of financial highlights. Includes, but is not limited to, per share information, income and expense ratios, total return, capital commitment and fee waiver. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 205 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480737/946-205-50-1 + Details
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