| Schedule of deferred tax assets |
| | June 30, 2022 | | | June 30, 2021 | | Deferred tax assets: | | | | | | | Net operating loss carry forwards | | $ | 28,888,330 | | | $ | 26,958,015 | | Accrued payroll | | | 806,829 | | | | 806,829 | | Stock compensation | | | 2,943,278 | | | | 2,943,278 | | General business credit | | | 6,068,138 | | | | 5,193,602 | | Other | | | 99,761 | | | | 99,761 | | | | $ | 38,806,336 | | | $ | 36,001,485 | | Valuation allowance | | | (38,806,336 | ) | | | (36,001,485 | ) | Total deferred taxes | | $ | - | | | $ | - | |
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