Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2019

Stockholders' Equity Note [Abstract]

Summary of warrant activity

The following is a summary of warrant activity from December 31, 2018 to September 30, 2019:

					Weighted
			Weighted		Average
			Average		Remaining		Aggregate
	Warrants		Exercise		Contractual		Intrinsic
	Outstanding		Price		Life		Value
Outstanding, December 31, 2018		419,167	$	61.00		3.48	$	—
Granted		25,355,000		0.97
Forfeited		—
Exercised		—
Outstanding, September 30, 2019		25,774,167	$	1.31		3.24	$	60,640,000
Exercisable, September 30, 2019		25,770,167	$	1.31		3.24	$	60,640,000

Summary of exercise price for warrant outstanding

The exercise price for warrant outstanding and exercisable at September 30, 2019:

Outstanding			Exercisable
Number of		Exercise	Number of		Exercise
Warrants		Price	Warrants		Price
22,000,000	$	0.50	22,000,000	$	0.50
3,000,000		1.85	3,000,000		1.85
500,000		2.70	500,000		2.70
20,000		31.90	20,000		31.90
100,000		50.00	100,000		50.00
75,000		75.00	75,000		75.00
50,000		100.00	50,000		100.00
6,667		200.00	6,667		200.00
10,000		235.00	10,000		235.00
7,500		250.00	7,500		250.00
5,000		280.00	1,000		280.00
25,774,167			25,770,167

Schedule of Assumptions

The fair value of the warrants listed above was determined using the Black-Scholes option pricing model with the following assumptions:

	September 30,	December 31,
	2019	2018
Risk-free interest rate	1.55% to 2.49%	2.65%
Expected life of the options	3.1 to 5 years	5 years
Expected volatility	185% - 200%	210%
Expected dividend yield	0%	0%