Discontinued operations - Mexico project development (Details) - Discontinued Operations - Mexico Project Development - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Discontinued operations - Mexico project development
Cash	$ 19,872	$ 13,776
Prepaid expenses and other current assets	112,082	110,854
Total assets of discontinued operations	131,954	124,630
Total liabilities of discontinued operations	$ 271,067	$ 271,159

Amount classified as assets attributable to disposal group held for sale or disposed of.

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