Digital assets - Schedule of fair value hierarchy (Details) - USD ($) |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Level 1 of fair value hierarchy [member] | ||
| Digital assets - Schedule of fair value hierarchy (Details) [Line Items] | ||
| Digital assets, at fair value | $ 0 | $ 0 |
| Level 2 of fair value hierarchy [member] | ||
| Digital assets - Schedule of fair value hierarchy (Details) [Line Items] | ||
| Digital assets, at fair value | 5,887,655 | 3,815,440 |
| Level 3 of fair value hierarchy [member] | ||
| Digital assets - Schedule of fair value hierarchy (Details) [Line Items] | ||
| Digital assets, at fair value | $ 0 | $ 0 |