Derivative liabilities - Additional information (Details) - USD ($) |
3 Months Ended | 9 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 19, 2025 |
Aug. 15, 2025 |
Jan. 14, 2025 |
Sep. 16, 2024 |
Dec. 21, 2023 |
Sep. 20, 2023 |
Aug. 02, 2023 |
Jun. 16, 2023 |
Nov. 23, 2020 |
May 31, 2025 |
May 31, 2026 |
May 31, 2025 |
Aug. 31, 2025 |
Dec. 13, 2023 |
|
| Derivative liabilities | ||||||||||||||
| Number of warrants to purchase voting common shares issued | 40,015 | 442 | 68 | 14 | 1 | 2 | 7 | 3 | ||||||
| Warrants term | 5 years | 5 years | 5 years 6 months | 5 years | 5 years | 3 years | 3 years | 3 years | 5 years | |||||
| Exercise price of warrants | $ 150 | $ 1,000 | $ 6,000 | $ 45,000 | $ 567,000 | $ 2,187,000 | $ 2,187,000 | $ 2,187,000 | $ 567,000 | |||||
| Agreed to reduce warrant issued | 12 | |||||||||||||
| Derivative financial liabilities | $ 40,651 | $ 125,227 | ||||||||||||
| Shares issue related costs | $ 0 | $ 440,584 | $ 343,163 | |||||||||||
| Warrant issued | ||||||||||||||
| Derivative liabilities | ||||||||||||||
| Number of warrants to purchase voting common shares issued | 593 | |||||||||||||
| Warrants term | 5 years 6 months | |||||||||||||
| Exercise price of warrants | $ 6,000 | |||||||||||||