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Cost of revenue (Details) - EUR (€) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Cost of revenue (Details) [Line Items] |  |  |
Cost of revenue | 72.00% | 26.00% | 34.00%
Percentage of cost revenue | 10.00% |  |
Trade payables (in Euro) | € 37,853 | € 6,112 | € 7,560
Revenue [Member] |  |  |
Cost of revenue (Details) [Line Items] |  |  |
Percentage of revenue | 88.00% | 56.00% | 88.00%

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