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Warrants - Schedule of Outstanding and Exercisable Warrants (Details) - USD ($) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Number of Outstanding Shares, Warrants forfeited |  | 435,000 |
Warrant [Member] |  |  |
Number of Outstanding Shares, Warrants Outstanding Beginning | 2,880,141 | 2,738,096 | 2,647,446
Number of Outstanding Shares, Warrants granted |  | 577,045 | 115,650
Number of Outstanding Shares, Warrants forfeited |  | (435,000) |
Number of Outstanding Shares, Warrants exercised | (16,666) |  | (25,000)
Number of Outstanding Shares, Warrants Outstanding Ending | 2,863,475 | 2,880,141 | 2,738,096
Weighted Average Exercise Price, Outstanding Beginning | $ 0.08 | $ 0.24 | $ 0.24
Weighted Average Exercise Price, Warrants granted |  | 0.02 | 0.18
Weighted Average Exercise Price, Warrants forfeited |  |  |
Weighted Average Exercise Price, Warrants exercised | 0.01 |  | 0.01
Weighted Average Exercise Price, Outstanding Ending | $ 0.08 | $ 0.08 | $ 0.24
Weighted Average Remaining Contractual Life Warrants Outstanding, Beginning | 3 years 8 months 26 days | 3 years 3 months 11 days | 4 years 2 months 27 days
Weighted Average Remaining Contractual Life Warrants Outstanding, granted | 0 years | 7 years 1 month 9 days | 5 years
Weighted Average Remaining Contractual Life Warrants Outstanding Ending | 3 years 29 days | 3 years 8 months 26 days | 3 years 3 months 11 days
Aggregate Intrinsic Value Outstanding Beginning | $ 782,385 | $ 937,567 | $ 930,751
Aggregate Intrinsic Value Outstanding Ending | $ 1,448,356 | $ 782,385 | $ 937,567

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- Definition Weighted average remaining contractual term for non-option equity awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Weighted average remaining contractual term for vested portions of non-option equity outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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