Equity (Tables)

12 Months Ended

Dec. 31, 2018

Equity

Summary of common stock warrants issued

	Number of Warrants			Weighted-average Exercise Price		Weighted-average Remaining Life (Years)		Aggregate Intrinsic Value
Outstanding, December 31, 2016		34,045,467		$	0.30
Granted		25,941,558			0.08
Forfeited or expired		(12,549,437	)		0.26
Outstanding, December 31, 2017		47,437,588			0.19		2.1	$	114,000
Exercisable, December 31, 2017		47,437,588			0.19		2.1	$	114,000
Granted		5,431,944			0.06
Exercised		--			--
Forfeited or expired		(501,645	)		0.29
Outstanding, December 31, 2018		52,367,887			0.18		1.3		-
Exercisable, December 31, 2018		52,367,887		$	0.18		1.3	$	-