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Changes in the derivative liability (Details) - USD ($) | 12 Months Ended
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Apr. 30, 2022 | Apr. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |
Balance, beginning of period | $ 2,812,767 |
Additions |  | 5,710,288
Eliminated upon conversion of notes/exercise of warrants | (163,141) | (5,390,415)
Changes in fair value | (1,042,129) | 2,492,894
Balance, end of period | $ 1,607,497 | $ 2,812,767

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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