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COMMON STOCK, PREFERRED STOCK AND WARRANTS (Tables) | 6 Months Ended
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Jun. 30, 2023
COMMON STOCK, PREFERRED STOCK AND WARRANTS |
Schedule of assumptions used in estimating fair value | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | June 30, | ​ | December 31, |
​ |  | 2023 | ​ | 2022 |
Stock price | ​ | $ | 0.19 | ​ | $ | 0.31 | ​
Warrant term (in years) | ​ |  | 4.11 | ​ |  | 4.61 | ​
Expected volatility | ​ |  | 86.02 | % |  | 80.90 | %
Risk-free interest rate | ​ |  | 4.29 | % |  | 4.04 | %
Dividend rate | ​ |  | 0.00 | % |  | 0.00 | %

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- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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