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Investment in equity securities (Tables)
 12 Months Ended
Dec. 31, 2024
Investment in equity securities [Abstract]  
Investment in Equity Securities
A summary of the movement in listed equity securities for the years ended December 31, 2023 and 2024 is presented in the table below:

   
Equity securities
  
Balance December 31, 2022
   $ —  
Equity securities acquired
     72,211,450  
Proceeds from sale of equity securities
    (258,999 )
Gain on sale of equity securities
     2,636  
Unrealized gain on equity securities revalued at fair value at end of the period
     5,134,013  
Balance December 31, 2023
  
$
77,089,100
  
Equity securities acquired
    
59,903,362
  
Proceeds from sale of equity securities
    
(52,940,067
)
Net loss on sale of equity securities
    
(99,238
)
Realized foreign exchange loss
     (169,881 )
Unrealized loss on equity securities revalued at fair value at end of the period
    
(14,639,422
)
Unrealized foreign exchange loss
     (24,844 )
Balance December 31, 2024
  
$
69,119,010