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Convertible promissory notes (Tables) | 12 Months Ended
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Dec. 31, 2019
Convertible promissory notes |
Schedule of components effecting the change in fair value |
|  | Year ended December 31, 2018 |  | Year ended December 31, 2019
Balance at January 1 |  | $ | — |  | $ | 51,922
Issuance |  |  | 29,131 |  |  | —
Change in fair value |  |  | 22,791 |  |  | (14,591)
Conversion to ordinary shares |  |  | — |  |  | (21,562)
Forward contracts |  |  | — |  |  | (15,769)
Balance at December 31 |  | $ | 51,922 |  | $ | —

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- References No definition available. + Details
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