v3.26.3
Summary of significant accounting policies (Details - Assumptions) - Non Public Warrants [Member]
9 Months Ended
Sep. 30, 2026
Measurement Input, Expected Term [Member]  
Business Combination [Line Items]  
Assumptions used 1.00
Measurement Input, Share Price [Member]  
Business Combination [Line Items]  
Assumptions used 4.56
Measurement Input, Exercise Price [Member]  
Business Combination [Line Items]  
Assumptions used 6.00
Measurement Input, Risk Free Interest Rate [Member]  
Business Combination [Line Items]  
Assumptions used 4.54%
Measurement Input, Price Volatility [Member]  
Business Combination [Line Items]  
Assumptions used 102.76%