v3.25.1
Income taxes (Details)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Income taxes    
U.S. Statutory federal income tax rate (21.00%) (21.00%)
State income taxes 5.00% 5.00%
Change in valuation allowance (26.00%) (26.00%)
Effect income tax rate 0.00% 0.00%