Segment information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment information
Professional service fee in connection with the business combination	$ (35,000)	$ (10,000)
Other formation and operating costs	(118,298)	(137,659)
Total formation and operating costs	(153,298)	(147,659)
Interest earned on investment held in trust account	224,752	881,123
Net income	$ 71,454	$ 733,464