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Warrants and derivative liability (Tables)
6 Months Ended
Jun. 30, 2022
Class of Warrant or Right [Line Items]  
Schedule of fair value of the warrants or rights

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June 30, 

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December 31,

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2022

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2021

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Expected volatility

 

97

%

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95

%

Expected dividends

 

None

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None

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Expected term

 

5.00 Years

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5.00 Years

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Risk-free rate

 

3.01

%

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1.26

%

Schedule of reconciliation of liabilities with significant unobservable inputs

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Additional

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Warrants

Balance at December 31, 2021

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$

331

Fair value of Additional Warrant Derivative Liability issued during the period

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—

Change in fair value

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(109)

Derecognition

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(206)

Balance at June 30, 2022

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$

16

Loan agreement  
Class of Warrant or Right [Line Items]  
Schedule of fair value of the warrants or rights

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First Tranche

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Second Tranche

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Term Loan

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Term Loan

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Expected volatility

 

95

%

​

93

%

Expected dividends

 

None

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​

None

​

Expected term

 

5.00 Years

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​

5.00 Years

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Risk-free rate

 

0.81

%

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2.10

%