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Financial assets and liabilities - Summary of Fair Value of Warrants (Parenthetical) (Details)
 6 Months Ended 12 Months Ended
Dec. 31, 2023
USD ($)
Year
$ / shares
shares
Jun. 30, 2023
USD ($)
Year
$ / shares
shares
Disclosure Of Financial Instruments [Line Items]    
Issuance warrants exercised period 7 years  
Warrants    
Disclosure Of Financial Instruments [Line Items]    
Number of warrants granted to purchase american depositary shares (in shares) | shares 2,224,669 2,224,669
Fair value | $ $ 992,233 $ 5,426,212
Warrants | Maximum    
Disclosure Of Financial Instruments [Line Items]    
Exercise price (in australian dollars per share) | $ / shares $ 7.26 $ 7.26
Expected Term | Year 7 7
Warrants | Minimum    
Disclosure Of Financial Instruments [Line Items]    
Exercise price (in australian dollars per share) | $ / shares $ 3.70  
Expected Term | Year 5 6