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v3.19.2

Note 8 - Stock Options and Warrants (Details 1) - $ / shares | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Warrants Outstanding |  |  |
Outstanding as of December 31, 2018 | 1,113 |  |
Outstanding as of June 30, 2019 |  | 1,113 |
Exercisable as of June 30, 2019 | 1,813,053 |  |
Weighted Average Exercise Price |  |  |
Exercisable as of June 30, 2019 | $ 0.35 |  |
Warrant |  |  |
Warrants Outstanding |  |  |
Outstanding as of December 31, 2018 | 1,813,053 | 0 | 15,550
Granted | 0 | 1,813,053 | 486,531
Forfeited | 0 | 0 | 0
Exercised | 0 | 0 | (501,901)
Outstanding as of June 30, 2019 | 1,813,053 | 1,813,053 | 0
Exercisable as of June 30, 2019 |  | 1,813,053 | 0
Weighted Average Exercise Price |  |  |
Outstanding as of December 31, 2018 | $ 0.35 | $ 0.00 | $ 135.00
Granted | 0.00 | 2.00 | 15.00
Forfeited | 0.00 | 0.00 | 0.00
Exercised | 0.00 | 0.00 | 15.00
Outstanding as of June 30, 2019 | $ 0.35 | 0.35 | 0.00
Exercisable as of June 30, 2019 |  | $ 2.00 | $ 0.00

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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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