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Note 9 - Convertible Notes Payable at Fair Value (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Convertible Debt [Table Text Block] |
|  | 2024 KEUR |  |  | 2023 KEUR |
Face value $27,656 convertible notes due December 7, 2023 (in default) |  |  | 24,035 |  |  |  | 25,629 |
|  | 2024 |  |  | 2023 |
Indexed common shares |  |  | 18,537,485 |  |  |  | 12,441,365 |
Fair value per share |  | $ | 1.24 |  |  | $ | 1.86 |
Total Fair Value of Convertible Notes |  | EUR24,035 |  |  | EUR25,629 |
Schedule of Debt [Table Text Block] |
December 31, 2024 | Issue Date |  | Principal KUSD |  |  | Accrued Interest KUSD |
Tranch-1 @4% (12% - default rate) | December 7, 2022 |  |  | 11,100 |  |  |  | 2,370 |
Tranch-2 @4% (12% - default rate) | December 8, 2022 |  |  | 8,150 |  |  |  | 1,657 |
Tranch-3 @4% (12% - default rate) | December 20, 2022 |  |  | 750 |  |  |  | 153 |
Tranch-4 @12% (18% - default rate) | February 5, 2024 |  |  | 4,318 |  |  |  | 470 |
Tranch-5 @12% (18% - default rate) | August 30, 2024 |  |  | 3,338 |  |  |  | 136 |
Total |  |  | 27,656 |  |  |  | 4,785 |
December 31, 2023 | Issue Date |  | Principal KUSD |  |  | Accrued Interest KUSD |
Tranch-1 @4% (12% - default rate) | December 7, 2022 |  |  | 11,100 |  |  |  | 1,034 |
Tranch-2 @4% (12% - default rate) | December 8, 2022 |  |  | 8,150 |  |  |  | 676 |
Tranch-3 @4% (12% - default rate) | December 20, 2022 |  |  | 750 |  |  |  | 62 |
Total |  |  | 20,000 |  |  |  | 1,772 |
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] |
Assumption |  | December 31, 2024 |  |  | December 31, 2023 |
Closing price of underlying common equity |  | $ | 4.18 |  |  | $ | 5.92 |
Exercise price |  | $ | 1.75 |  |  | $ | 1.64 |
Volatility of underlying common equity |  |  | 150 | % |  |  | 150 | %
Remaining term (in years) |  | 1 |  |  | 1 |
Risk Free treasury rates |  |  | 4.18 | % |  |  | 4.20 | %
Foreign exchange rate at year end USD/EUR |  |  | 1.0389 |  |  |  | 1.105 |

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