Income taxes (Details - Effective rate) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Federal statutory rates	$ (991,000)	$ (1,034,596)
State income taxes	(313,000)	(435,516)
Foreign income taxes	(46,000)	(129,904)
Permanent differences		(86)
Valuation allowance against net deferred tax assets	1,350,000	1,600,102
Effective rate	$ 0	$ 0