Other payables - Device Contract Termination (Details)		12 Months Ended
	Aug. 21, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Other payables (note 12)		$ 5,730,781	$ 629,381
Number of weeks for payment of instalments	44
Device Contract Termination
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Other payables (note 12)	$ 6,600,000	3,750,000
Gain on extinguishment of liabilities	2,030,635
Impairment of ROU assets	5,267,404
Loss on contract termination or settlement	$ 3,236,769	$ 3,236,769	$ 0
Interest rate in the event of default (in %)		6.00%