Derivative liability - Movement (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Derivative Liability Details 1
Opening Balance	$ 8,694,272	$ 4,618,080
Derivative liability mark-to-market on convertible debt extinguishment	126,444,276
Derivative liability on revised convertible notes and warrants arising from convertible debt extinguishment	6,349,265
Derivative liability cancelled on debt extinguishment	(144,893,444)
Derivative liability arising from convertible notes		1,477,163
Fair value adjustment to derivative liability	12,792,570	2,599,029
Closing Balance	$ 9,386,939	$ 8,694,272