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OTHER LONG-TERM LIABILITIES (Tables) | 6 Months Ended
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Jun. 30, 2022
OTHER LONG-TERM LIABILITIES |
Schedule of other long-term liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | June 30, 2022 |  | December 31, 2021
Technology Investment Agreement (TIA) |  | $ | 73,870,255 |  | $ | 68,955,664
Stock repurchase |  | ​ | — |  | ​ | 1,040,666
Total | ​ | $ | 73,870,255 | ​ | $ | 69,996,330

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