Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net loss	$ (19,919,768)	$ (25,768,184)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	6,723	7,866
Stockbased compensation	3,686,060	2,161,931
Amortization of right of use lease asset	129,518	108,164
Foreign currency (gain)	(269,140)	(358,201)
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	1,904,566	1,480,655
Accounts payable	(2,142,301)	3,266,274
Accrued expenses and other liabilities	(2,533,713)	2,185,307
Lease liability	(135,934)	(263,750)
Net cash used in operating activities	(19,273,989)	(17,179,938)
Cash flows from investing activities:
Purchases of property and equipment		(10,144)
Net cash used in investing activities		(10,144)
Cash flows from financing activities:
Proceeds from the exercise of stock options		150,949
Net cash provided by financing activities		150,949
Decrease in cash and cash equivalents	(19,273,989)	(17,039,133)
Effect of exchange rate changes on cash	60,148	(188,232)
Cash and cash equivalents-beginning of year	89,017,686	130,088,869
Cash and cash equivalents-end of period	$ 69,803,845	$ 112,861,504