Derivative liabilities - Summary of derivative liability balance (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Fair Value Change	$ (721,505)	$ (4,338)	$ (503,327)	$ (335,884)
Notes
Beginning Balance			1,410,747
Initial Derivative Liability			1,427,933
Fair Value Change			(139,066)
Reclassified to Additional paid-in capital			(963,767)
Reduction for debt assignment			(206,708)
Ending Balance	1,529,139		1,529,139
Warrants
Beginning Balance			203,023
Initial Derivative Liability			87,717
Fair Value Change			(18,877)
Reclassified to Additional paid-in capital
Reduction for debt assignment
Ending Balance	271,863		271,863
Totals
Beginning Balance			1,613,770
Initial Derivative Liability			1,515,650
Fair Value Change			(157,943)
Reclassified to Additional paid-in capital			(963,767)
Reduction for debt assignment			(206,708)
Ending Balance	$ 1,801,002		$ 1,801,002