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Income Taxes - Federal income tax rate (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Income Taxes    
Expected tax provision (benefit) at U.S. federal statutory rate $ (2,534,797) $ (1,902,004)
State income taxes, net of federal benefit 4,081 1,560
Foreign tax rate differential (494,278) (475,504)
Change in valuation allowance 3,146,272 2,096,141
Prior year deferred tax adjustments   (1,083)
Other (99,938) $ 280,890
Total provision (benefit) for income taxes $ 21,340