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Convertible securities (Tables)
 12 Months Ended
Dec. 31, 2022
Convertible securities  
Schedule of convertible securities
Movement of the balance during the year ended December 31, 2021 was as follow:
 
     $  
At January 1, 2021
      15,346,113  
Proceeds from issuance of convertible securities
      4,980,718  
Changes in fair value recognized in profit or loss
      29,054,669  
Changes in fair value recognized in other reserve due to amendment of terms
      811,819  
Converted to Series D preference shares of PHCL (note 25)
      (50,193,319 ) 
    
 
 
  
At December 31, 2021, January 1, 2022 and December 31, 2022
      —