Stock warrants - Schedule of outstanding stock purchase warrants (Details) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Warrants and Rights Note Disclosure [Abstract]
Number of warrants, Outstanding, Beginning of Period	0	0
Weighted Average Exercise Price, Outstanding, Beginning of Period	$ 0	$ 0
Number of warrants, Assumed in reverse acquisition	5,684,294	5,684,294
Weighted Average Exercise Price, Assumed in reverse acquisition	$ 0.6	$ 0.6
Number of warrants, Issued in connection with convertible debt	2,729,167	2,729,167
Weighted Average Exercise Price, Issued in connection with convertible debt	$ 0.32	$ 0.32
Number of warrants, Exercise	0	0
Weighted Average Exercise Price, Exercise	$ 0	$ 0
Number of warrants, Expired	0	0
Weighted Average Exercise Price, Expired	$ 0	$ 0
Number of warrants, Outstanding, End of Period	8,413,461	0
Weighted Average Exercise Price, Outstanding, End of Period	$ 0.51	$ 0
Weighted Average Remaining Term	4 years 4 months 24 days