Cash and cash equivalents - summary of cash and cash equivalent (Details) - USD ($)	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash and cash equivalents.
Cash at banks	$ 4,414,456	$ 4,958,983
Total	$ 4,414,456	$ 4,958,983	$ 2,922,755

The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

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