Segment information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Revenue	$ 0	$ 0
Research and development	(47,000)	(47,000)
Net loss	(9,674,000)	(449,000)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	0	0
Research and development	(47,000)	(47,000)
Payroll and related	(676,000)	(26,000)
Share-based compensation	(8,292,000)	(145,000)
Consulting related to intellectual property	(266,000)	(65,000)
Insurance	(19,000)	(19,000)
Operating expenses	(259,000)	(71,000)
Interest expense	(115,000)	(76,000)
Net loss	$ (9,674,000)	$ (449,000)