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Income tax expense/(credit) - Reconciliation of effective tax rate (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of income tax credit
Loss before taxation	$ (183,306,283)	$ (170,284,098)	$ (3,901,443)
Notional tax on loss before taxation, calculated at the applicable rate	(18,117,948)	(6,622,976)	(697,772)
Tax effect of non-deductible expenses	25,595,035	11,587,117	1,111,877
Tax effect of non-taxable income	(168,565)	(1,008,915)	(76,874)
Tax effect of temporary difference not recognized			73,833
Tax effect on utilization of previously unrecognized tax losses		(579,657)	(692,350)
Tax effect of tax losses not recognized	101,854		298,651
Tax effect of previously unrecognized temporary differences recognized in current year	(263,272)	360,922	(1,957,229)
Others		(3,747)	2,306
Tax expense/(credit)	$ 7,147,104	$ 3,732,744	$ (1,937,558)

X

- Definition

The amount of profit (loss) for a period before deducting tax expense. [Refer: Profit (loss)]

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The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax. [Refer: Current tax expense (income); Deferred tax expense (income)]

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The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that the entity does not separately disclose in the same statement or note. [Refer: Accounting profit; Applicable tax rate]

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The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to expenses not deductible in determining taxable profit (tax loss). [Refer: Accounting profit]

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