Commitments and contingencies (Details - Cash flow Information) - USD ($)  | 
3 Months Ended | |
|---|---|---|
Mar. 31, 2023  | 
Mar. 31, 2022  | 
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| Operating cash flow information: | ||
| Cash paid for amounts included in the measurement of lease liabilities | $ 0 | $ 9,475 | 
| X | ||||||||||
- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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| X | ||||||||||
- References No definition available. 
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