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Income tax (Details) - Schedule of deferred tax assets and liabilities - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
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Deferred tax assets |  |
Net operating loss | $ 14,997,873 | $ 12,702,731
Stock options | 7,450,914 | 5,922,550
Federal tax credits | 336,475 | 303,556
Basis difference in intangible and fixed assets | 963,784 | (206,925)
Accrued payroll | 11,203 | 169,242
Capital loss | 350,526 |
Valuation allowance | (24,110,775) | (18,891,154)
Deferred tax assets, net |  |

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