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Cash and cash equivalents (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Cash and cash equivalents |
Schedule of Cash and cash equivalents | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ |  | 2021 |  | 2020
Bank accounts: |  | ​ |  |  | ​ |
United States dollar | ​ | $ | 15,888,445 | ​ | $ | 14,001,264
Cayman Islands dollar | ​ |  | 12,784,358 | ​ |  | 5,650,874
Bahamian dollar | ​ |  | 3,944,208 | ​ |  | 14,863,287
Bermudian dollar | ​ |  | 2,832 | ​ |  | 2,832
​ | ​ |  | 32,619,843 | ​ |  | 34,518,257
​ | ​ | ​ | ​ | ​ | ​ | ​
Short term deposits: | ​ |  |  | ​ |  |
United States dollar | ​ |  | 5,324,258 | ​ |  | 5,796,582
Cayman Islands dollar | ​ |  | 2,413,958 | ​ |  | 2,413,547
Bahamian dollar | ​ |  | — | ​ |  | 1,065,764
​ | ​ |  | 7,738,216 | ​ |  | 9,275,893
Total cash and cash equivalents | ​ | $ | 40,358,059 | ​ | $ | 43,794,150

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