Stock-based compensation (Details 1) - $ / shares | 12 Months Ended | |
Dec. 31, 2021 | Dec. 31, 2020 |
Number of Options (in shares) | 50,717,724 | 39,604,515 |
Number of vested options outstanding (in shares) | 18,347,474 | |
Number of unvested options outstanding (in shares) | 32,370,250 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.72 | |
March 14, 2020 [Member] | Options 1 [Member] | | |
Number of Options (in shares) | 3,018,557 | |
Number of vested options outstanding (in shares) | 2,025,807 | |
Number of unvested options outstanding (in shares) | 992,750 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.19 | |
Weighted Avg Remaining Life (Year) | 3 years 2 months 12 days | |
July 9, 2020 [Member] | Options 2 [Member] | | |
Number of Options (in shares) | 175,000 | |
Number of vested options outstanding (in shares) | 87,500 | |
Number of unvested options outstanding (in shares) | 87,500 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.18 | |
Weighted Avg Remaining Life (Year) | 3 years 6 months 7 days | |
August 25, 2020 [Member] | Options 3 [Member] | | |
Number of Options (in shares) | 20,000 | |
Number of unvested options outstanding (in shares) | 20,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.13 | |
Weighted Avg Remaining Life (Year) | 3 years 7 months 24 days | |
September 29, 2020 [Member] | Options 4 [Member] | | |
Number of Options (in shares) | 225,000 | |
Number of vested options outstanding (in shares) | 225,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.11 | |
Weighted Avg Remaining Life (Year) | 3 years 9 months | |
October 1, 2020 [Member] | Options 5 [Member] | | |
Number of Options (in shares) | 266,667 | |
Number of vested options outstanding (in shares) | 116,667 | |
Number of unvested options outstanding (in shares) | 150,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.11 | |
Weighted Avg Remaining Life (Year) | 3 years 9 months | |
October 20, 2020 [Member] | Options 6 [Member] | | |
Number of Options (in shares) | 20,000 | |
Number of vested options outstanding (in shares) | 10,000 | |
Number of unvested options outstanding (in shares) | 10,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.09 | |
Weighted Avg Remaining Life (Year) | 3 years 9 months 21 days | |
December 31, 2020 [Member] | Options 7 [Member] | | |
Number of Options (in shares) | 23,442,500 | |
Number of vested options outstanding (in shares) | 14,682,500 | |
Number of unvested options outstanding (in shares) | 8,760,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.23 | |
Weighted Avg Remaining Life (Year) | 9 years | |
February 26, 2021 [Member] | Options 8 [Member] | | |
Number of Options (in shares) | 60,000,000,000 | |
Number of vested options outstanding (in shares) | 150,000 | |
Number of unvested options outstanding (in shares) | 4,500,000,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 1.87 | |
Weighted Avg Remaining Life (Year) | 9 years 1 month 28 days | |
March 1, 2021 [Member] | Options 9 [Member] | | |
Number of Options (in shares) | 200,000 | |
Number of vested options outstanding (in shares) | 50,000 | |
Number of unvested options outstanding (in shares) | 150,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 2.06 | |
Weighted Avg Remaining Life (Year) | 9 years 2 months 1 day | |
March 8, 2021 [Member] | Options 10 [Member] | | |
Number of Options (in shares) | 200,000 | |
Number of vested options outstanding (in shares) | 50,000 | |
Number of unvested options outstanding (in shares) | 150,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 1.88 | |
Weighted Avg Remaining Life (Year) | 9 years 2 months 8 days | |
March 15, 2021 [Member] | Options 11 [Member] | | |
Number of Options (in shares) | 200,000 | |
Number of vested options outstanding (in shares) | 50,000 | |
Number of unvested options outstanding (in shares) | 150,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 2.49 | |
Weighted Avg Remaining Life (Year) | 9 years 2 months 15 days | |
May 12, 2021 [Member] | Options 12 [Member] | | |
Number of Options (in shares) | 3,600,000 | |
Number of vested options outstanding (in shares) | 850,000 | |
Number of unvested options outstanding (in shares) | 2,750,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.78 | |
Weighted Avg Remaining Life (Year) | 9 years 4 months 9 days | |
May 14, 2021 [Member] | Options 13 [Member] | | |
Number of Options (in shares) | 3,200,000 | |
Number of vested options outstanding (in shares) | 50,000 | |
Number of unvested options outstanding (in shares) | 3,150,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.75 | |
Weighted Avg Remaining Life (Year) | 9 years 4 months 13 days | |
August 11, 2021 [Member] | Options 14 [Member] | | |
Number of Options (in shares) | 1,300,000 | |
Number of unvested options outstanding (in shares) | 1,300,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.57 | |
Weighted Avg Remaining Life (Year) | 9 years 7 months 9 days | |
August 18, 2021 [Member] | Options 15 [Member] | | |
Number of Options (in shares) | 200,000 | |
Number of unvested options outstanding (in shares) | 200,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.50 | |
Weighted Avg Remaining Life (Year) | 9 years 7 months 17 days | |
August 23, 2021 [Member] | Options 16 [Member] | | |
Number of Options (in shares) | 100,000 | |
Number of unvested options outstanding (in shares) | 100,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.50 | |
Weighted Avg Remaining Life (Year) | 9 years 7 months 24 days | |
September 13, 2021 [Member] | Options 17 [Member] | | |
Number of Options (in shares) | 800,000 | |
Number of unvested options outstanding (in shares) | 800,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.57 | |
Weighted Avg Remaining Life (Year) | 9 years 8 months 12 days | |
September 27, 2021 [Member] | Options 18 [Member] | | |
Number of Options (in shares) | 500,000 | |
Number of unvested options outstanding (in shares) | 500,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.54 | |
Weighted Avg Remaining Life (Year) | 9 years 8 months 26 days | |
October 01, 2021 [Member] | Options 19 [Member] | | |
Number of Options (in shares) | 12,650,000 | |
Number of unvested options outstanding (in shares) | 12,650,000 | |
Weighted Avg Exercise Price, Stock options granted (in dollars per share) | $ 0.58 | |
Weighted Avg Remaining Life (Year) | 9 years 9 months | |