Derivative liabilities (Details 2) - $ / shares |
1 Months Ended | 6 Months Ended | 12 Months Ended |
|---|---|---|---|
Aug. 16, 2019 |
Jun. 30, 2025 |
Dec. 31, 2024 |
|
| Quoted market price on valuation date | $ 0.034 | $ 0.032 | $ 0.0152 |
| Effective contractual conversion rates | $ 0.026 | $ 0.02864 | $ 0.01296 |
| Contractual term to maturity | 6 months | 3 months | 3 months |
| Risk-adjusted interest rate | 10.00% | 10.00% | 10.00% |
| Bottom [Member] | |||
| Volatility | 200.36% | 200.36% | |
| Top [Member] | |||
| Volatility | 169.31% |