Significant accounting policies (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Significant Accounting Policies
Net income	$ 203,618	$ 2,112,351
Accretion of carrying value to redemption value	(1,859,992)	(3,971,545)
Net loss including accretion of carrying value of redemption value	$ (1,656,374)	$ (1,859,194)