Shareholder loans - Subordinated Convertible Notes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Oct. 13, 2023	Aug. 15, 2023
Debt Instruments
Aggregate principal amount	$ 36,426,638
Amount of Feb 2023 and August 2023 notes exchanged				$ 2,690,000
Repayment of notes	800,000
Subordinated Convertible Notes
Debt Instruments
Aggregate principal amount			$ 6,505,000	$ 500,000
Carrying value	3,312,641	$ 0
Interest expense	314,536	0
Repayment of notes	$ 0	$ 0