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Share-based compensation and warrant reserve (Details 5) | 12 Months Ended
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Dec. 31, 2022 $ / shares shares | Dec. 31, 2021 $ / shares shares | Dec. 31, 2021 $ / shares shares
Disclosure Of Share Option And Warrant Reserves [Abstract] |  |  |
Outstanding warrants Beginning of the year | 8,211,453 | 1,626,740 | 1,626,740
Warrants issued |  | 7,461,450 | 7,461,450
Warrants exercised |  | (101,042) | (101,042)
Warrants expired | (750,003) | (775,695) | (775,695)
Outstanding warrants end of the year | 7,461,450 | 8,211,453 | 8,211,453
Outstanding warrants, exercise price Brginning of the year | $ / shares | $ 1.27 | $ 1.66 |
Warrants issued, exercise price | $ / shares |  | 1.2 |
Warrants exercised, exercise price | (per share) |  | 1.46 | $ 1.46
Warrants expired, exercise price | $ / shares | 1.95 | 1.42 |
Outstanding warrants, exercise price end of the year | $ / shares | $ 1.2 | $ 1.27 |

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