Schedule of deferred revenue (Details) - USD ($) |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
|
| Accounting Policies [Abstract] | ||
| Beginning balance | $ 22,139 | $ 29,120 |
| Add: net increase in current period of deferred revenue | 41,200 | 22,139 |
| Less: revenue recognized from beginning deferred revenue | (22,139) | (29,120) |
| Ending balance | $ 41,200 | $ 22,139 |