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Convertible debentures (Details) - USD ($) |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
May 31, 2024 | Dec. 29, 2023 | Oct. 21, 2022 | Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2023
Convertible debentures |  |  |  |  |  |
Aggregate principal amount |  |  |  |  | $ 7,780,000 |
Loss on warrants settlement |  |  |  |  | 1,928,681 |
Issuance cost incurred |  |  |  | $ 0 | 1,560,000 | $ 300,000
Amortization of debentures discount |  |  |  | $ 1,167,996 | 1,125,067 | $ 357,995
Convertible Debt Issued on December 29, 2023 |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |
Aggregate principal amount |  | $ 6,740,000 |  |  |  |
Warrants to purchase ordinary shares |  | 1,070,719 |  |  |  |
Purchase price of warrants |  | $ 6,127,334 |  |  |  |
Debt issuance costs |  | 612,666 |  |  |  |
Loss on warrants settlement |  | 4,399,645 |  |  |  |
Fair value of interest |  | 6,127,334 |  |  |  |
Proceeds from issuance of debt |  | 3,566,476 |  |  |  |
Proceeds from issuance of warrants |  | $ 2,560,858 |  |  |  |
Conversion price (in dollars per share) |  | $ 15 |  |  |  |
Prepayments in cash |  |  |  |  | $ 960,000 |
Number of shares issued upon conversion |  |  |  | 35,921,082 |  |
Maturity date |  | 36 months |  |  |  |
Convertible Debt Issued on October 21, 2022 |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |
Aggregate principal amount |  |  | $ 2,100,000 |  |  |
Interest rate (as a percent) |  |  | 116.00% |  |  |
Purchase price of warrants |  |  | $ 1,974,000 |  |  |
Debt issuance costs |  |  | 256,000 |  |  |
Loss on warrants settlement |  |  | 1,007,799 |  |  |
Fair value of interest |  |  | 1,872,536 |  |  |
Proceeds from issuance of debt |  |  | 1,198,804 |  |  |
Proceeds from issuance of warrants |  |  | $ 645,196 |  |  |
Conversion price (in dollars per share) |  |  | $ 0.33 |  | $ 1.8 |
Weighted average interest rate |  |  | 115.00% |  |  |
Prepayments in cash |  |  |  |  | $ 900,000 |
Remaining principle balance |  |  |  |  | $ 1,200,000 |
Number of shares issued upon conversion |  |  |  |  | 680,183 |
Convertible Debenture and Exchange note issued on May 31, 2024 |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |
Aggregate principal amount | $ 2,000,000 |  |  |  |  |
Interest rate (as a percent) | 10.00% |  |  |  |  |
Number of shares issued upon conversion |  |  |  | 6,677,149 |  |
Maturity date | 24 months |  |  |  |  |
Cancellation of warrants | 500,000 |  |  |  |  |
Cancelled warrants | $ 71,319 |  |  |  |  |
Average price of ordinary share | 95.00% |  |  |  |  |
Ordinary shares | Convertible Debt Issued on December 29, 2023 |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |
Conversion price (in dollars per share) |  | $ 0.7186 |  |  |  |
Weighted average interest rate |  | 20.00% |  |  |  |
Ordinary shares | Convertible Debt Issued on October 21, 2022 |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |
Warrants to purchase ordinary shares |  |  | 5,925,599 |  |  |
Conversion price (in dollars per share) |  |  | $ 0.06 |  |  |
Weighted average interest rate |  |  | 20.00% |  |  |
Minimum | Convertible Debt Issued on December 29, 2023 |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |
Interest rate |  | 13.50% |  |  |  |
Minimum | Convertible Debt Issued on October 21, 2022 |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |
Interest rate |  |  | 12.00% |  |  |
Minimum | Convertible Debenture and Exchange note issued on May 31, 2024 |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |
Conversion price (in dollars per share) | $ 0.76 |  |  |  |  |
Maximum | Convertible Debt Issued on October 21, 2022 |  |  |  |  |  |
Convertible debentures |  |  |  |  |  |
Warrants to purchase ordinary shares |  |  | 5,108,275 |  |  |

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