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Note 2 - Summary of Significant Accounting Policies (Details) - Schedule of Accounts, Notes, Loans and Financing Receivable - USD ($) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Balance at January 1, 2018 | $ 218,976 |
Provision for the year | 13,241 | $ 305,519
Balance at December 31, 2018 | 224,795 | $ 218,976
Common Stock Issued in Warrant Surrender [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Write off | $ (7,422) |

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