Derivative liability - Schedule of fair value of warrants (Details) - USD ($)	1 Months Ended	12 Months Ended
	Oct. 27, 2022	Dec. 31, 2022
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value warrant liability		$ 400,161
Warrant [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Stock price on valuation date	$ 0.28	$ 0.19
Exercise price	$ 0.32	$ 0.32
Expected term	5 years	4 years 9 months 18 days
Discount rate	4.19%	3.73%
Volatility	175.24%	173.44%
Fair value warrant liability	$ 591,590	$ 400,161