| Note 2 - Summary of significant accounting policies: Investments in debt securities (Policies) | 3 Months Ended | 
|---|---|
| Mar. 31, 2021 | |
| Policies | |
| Investments in debt securities | Investments in debt securities 
 The Companys investment in debt securities consists of two convertible notes receivable from NeuCourt, Inc., which are recorded at the aggregate principal face amount of $75,000 plus accrued interest of $8,031 and $7,038 at March 31, 2021 and December 31, 2020, respectively, as presented in Note 7. | 
| X | ||||||||||
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- Definition Represents the textual narrative disclosure of Investments in debt securities, during the indicated time period. No definition available. 
 | 
| X | ||||||||||
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- References No definition available. 
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