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Prepaid expenses and deposits - Schedule of prepaid expenses and deposits (Details) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Prepaid Expenses And Deposits [Abstract]    
Insurance $ 116,649 $ 246,752
Research and development 602,497 0
Other prepaids and deposits 647,275 322,649
Prepaid expenses and deposits $ 1,366,421 $ 569,401