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v3.23.1

Warrants - Changes in warrant liability (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Warrants |  |  |
Balance, beginning of period | $ 261,569 | $ 374,694 |
Balance, end of period | 262,909 | 261,569 | $ 374,694
Level 3 |  |  |
Warrants |  |  |
Balance, beginning of period | 261,569 | 374,694 | 287,750
Additional warrants issued |  | 0 |
Change in fair value | 1,340 | (113,125) | 86,944
Balance, end of period | $ 262,909 | $ 261,569 | $ 374,694

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- Definition The fair value of shares that would be issued, determined under the conditions specified in the contract if the settlement were to occur at the reporting date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=109262807&loc=d3e22047-110879 + Details
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