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Basis of Accounting and Significant Accounting Policies (Details Narrative)
 6 Months Ended 12 Months Ended
Dec. 31, 2023
USD ($)
oz
shares
Dec. 31, 2022
Jun. 30, 2023
USD ($)
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items]      
Percenatge of allocated platinum available for sale 99.84% 99.94%  
Fair value measurements transfers into level $ 0   $ 0
Fair value measurements transfers out of level $ 0   0
Fee paid to sponsor, annualized rate 0.50%    
Minimum block of shares issued redeemed | shares 50,000    
Transaction fee for creations and redemptions $ 500    
Trust unallocated account | oz 192    
Uncertain tax positions taken in tax returns $ 0   0
Income tax examiation, description As of December 31, 2023, the 2023, 2022 and 2021 tax years remain open for examination.    
Sponsor [Member]      
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items]      
Fees payable to sponsor, value $ 15,759   $ 15,441