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Discontinued operations - Mexico project development (Details) - Discontinued Operations - Mexico Project Development - USD ($) | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Discontinued operations - Mexico project development |  |
Cash | $ 10,992 | $ 127,859
Prepaid expenses and other current assets | 112,633 | 144,626
Total assets of discontinued operations | 123,625 | 272,485
Total liabilities of discontinued operations | $ 271,078 | $ 509,745

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