Significant accounting policies (Details) - USD ($)	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Significant accounting policies
Net (loss) income	$ (29,122)	$ 472,592
Accretion of carrying value to redemption value	(435,783)	(726,071)
Net loss including accretion of carrying value of redemption value	$ (464,905)	$ (253,479)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details