Warrants (Tables)

3 Months Ended

Mar. 31, 2023

Warrants [Abstract]

Schedule of the warrants issued 2020 financing

Appraisal Date	December 31, 2022			December 31, 2022
Market price per share (USD/share)	$	0.99		$	0.99
Exercise price (USD/price)		6.46			6.475
Risk free rate		4.7	%		4.6	%
Dividend yield		0.0	%		0.0	%
Expected term/ Contractual life (years)		0.9 years			1.4 years
Expected volatility		75.6	%		82.7	%

Appraisal Date	March 31, 2023			March 31, 2023
Market price per share (USD/share)	$	0.88		$	0.88
Exercise price (USD/price)		6.46			6.475
Risk free rate		4.8	%		4.5	%
Dividend yield		0.0	%		0.0	%
Expected term/ Contractual life (years)		0.7 years			1.2 years
Expected volatility		53.5	%		70.1	%

	Investor Warrants Series A1			Placement Agent Warrants
Appraisal Date	December 31, 2022			December 31, 2022
Market price per share (USD/share)		0.99			0.99
Exercise price (USD/price)		7.67			9.204
Risk free rate		4.5	%		4.5	%
Dividend yield		0.0	%		0.0	%
Expected term/ Contractual life (years)		1.6 years			1.6 years
Expected volatility		80.4	%		80.4	%

	Investor Warrants Series A1			Placement Agent Warrants
Appraisal Date	March 31, 2023			March 31, 2023
Market price per share (USD/share)		0.88			0.88
Exercise price (USD/price)		7.67			9.204
Risk free rate		4.4	%		4.4	%
Dividend yield		0.0	%		0.0	%
Expected term/ Contractual life (years)		1.4 years			1.4 years
Expected volatility		82.5	%		82.5	%

Schedule of warrants liability measured at fair value on a recurring basis using Level 3 inputs

	December 31, 2022			March 31, 2023
Balance at the beginning of the year/ period	$	5,846,000		$	136,000
Warrants issued to institution investors		-			-
Warrants issued to placement agent		-			-
Warrants redeemed		-			-
Fair value change of the issued warrants included in earnings		(5,710,000	)		(85,000	)
Balance at end of year/ period		136,000			51,000

Schedule of the warrant activity

	Number of Warrants		Average Exercise Price		Weighted Average Remaining Contractual Term in Years
Outstanding at January 1, 2023		9,092,499	$	7.19		1.33
Exercisable at January 1, 2023		9,092,499	$	7.19		1.33
Granted		-		-		-
Exercised / surrendered		-		-		-
Expired		-		-		-
Outstanding at March 31, 2023		9,092,499		7.19		1.08
Exercisable at March 31, 2023		9,092,499		7.19		1.08