Significant accounting policies (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Significant Accounting Policies
Net loss	$ 2,112,351	$ 2,911,033
Subsequent accretion of carrying value to redemption value	(3,971,545)	(3,651,188)
Net loss including accretion of carrying value to redemption value	$ (1,859,194)	$ (740,155)