v3.25.2
Income taxes (Details 1) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Income taxes        
Tax credit (expense) at statutory rate (25%) $ 13,693 $ 30,951 $ 55,063 $ 66,074
Increase in valuation allowance (13,693) (30,951) (55,063) (66,074)
Net deferred income tax asset $ 0 $ 0 $ 0 $ 0