Fair value measurement (Details - ILIAD and Streeterville Capital) - Finite Lived Intangible Assets Impairment Charge - Streeterville Convertible Bond [Member]	12 Months Ended
	Dec. 31, 2021
Measurement Input, Expected Term [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement	0.84-1.00
Measurement Input, Risk Free Interest Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement	0.07%-0.12%
Measurement Input, Price Volatility [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement	111.94%-119.90%
Measurement Input, Expected Dividend Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement	0