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Summary of significant accounting policies - Fair value measurement of derivative liability (Details) $ / shares in Units, $ in Millions | Oct. 06, 2025 USD ($) $ / shares shares
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Summary of significant accounting policies |
Conditional investment | $ | $ 17.8
Exchange units | shares | 8,215,570
Price per unit | $ 2.17
Number of warrants per unit | 0.75
Warrant year | 10 years
Each warrant to acquire common shares | shares | 1
Weighted average exercise price | $ 0.01

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