Deferred purchase price - Movement (Details) - USD ($) |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2025 |
Dec. 31, 2024 |
|
| Deferred purchase price. | ||
| Opening balance | $ 1,148,013 | $ 1,207,682 |
| Change in fair value | (205,610) | 1,865,274 |
| Issuance of shares | (295,725) | (1,924,943) |
| Ending balance | $ 646,678 | $ 1,148,013 |