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Loans payable (Details - Interest expense) - USD ($)
3 Months Ended 6 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Obligation with Joint and Several Liability Arrangement [Line Items]        
Interest expense $ 70,306 $ 140,210 $ 132,143 $ 271,426
Accrued Interest [Member]        
Obligation with Joint and Several Liability Arrangement [Line Items]        
Interest expense 61,793 66,025 113,507 109,170
Credit Utilization Fees [Member]        
Obligation with Joint and Several Liability Arrangement [Line Items]        
Interest expense 8,513 14,583 18,636 36,350
Amortization Of Debt Discount [Member]        
Obligation with Joint and Several Liability Arrangement [Line Items]        
Interest expense $ 0 $ 59,602 $ 0 $ 125,906