Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)
|
Preferred Stock [Member]
Series F Preferred Stock [Member]
|
Preferred Stock [Member]
Series G Preferred Stock [Member]
|
Preferred Stock [Member]
Series H Preferred Stock [Member]
|
Preferred Stock [Member]
Series I preferred stock [Member]
|
Common Stock [Member] |
Common Stock to be Issued [Member] |
Additional Paid-in Capital [Member] |
Retained Earnings [Member] |
Total |
Beginning balance, value at Apr. 30, 2020 |
|
|
|
|
$ 2,903
|
|
$ 41,093,050
|
$ (31,587,952)
|
$ 9,508,001
|
Beginning balance, shares at Apr. 30, 2020 |
|
57
|
|
|
2,903,393
|
|
|
|
|
Net loss |
|
|
|
|
|
|
|
(957,120)
|
(957,120)
|
Stock options granted for services |
|
|
|
|
|
|
51,262
|
|
51,262
|
Conversion of preferred stock into common stock |
|
|
|
|
$ 21
|
|
(21)
|
|
|
Conversion of preferred stock into common stock, shares |
|
(57)
|
|
|
20,357
|
|
|
|
|
Stock-based compensation in connection with restricted common stock award grants and restricted common stock unit grants |
|
|
|
|
$ 2
|
|
20,216
|
|
20,218
|
Stock-based compensation in connection with restricted common stock award grants and restricted common stock unit grants, shares |
|
|
|
|
1,875
|
|
|
|
|
Ending balance, value at Jul. 31, 2020 |
|
|
|
|
$ 2,926
|
|
41,164,507
|
(32,545,072)
|
8,622,361
|
Ending balance, shares at Jul. 31, 2020 |
|
|
|
|
2,925,625
|
|
|
|
|
Beginning balance, value at Apr. 30, 2020 |
|
|
|
|
$ 2,903
|
|
41,093,050
|
(31,587,952)
|
9,508,001
|
Beginning balance, shares at Apr. 30, 2020 |
|
57
|
|
|
2,903,393
|
|
|
|
|
Net loss |
|
|
|
|
|
|
|
|
(9,502,366)
|
Ending balance, value at Jan. 31, 2021 |
|
|
|
|
$ 5,870
|
$ 794
|
71,816,386
|
(41,090,318)
|
30,732,732
|
Ending balance, shares at Jan. 31, 2021 |
|
|
|
|
5,869,751
|
794,136
|
|
|
|
Beginning balance, value at Jul. 31, 2020 |
|
|
|
|
$ 2,926
|
|
41,164,507
|
(32,545,072)
|
8,622,361
|
Beginning balance, shares at Jul. 31, 2020 |
|
|
|
|
2,925,625
|
|
|
|
|
Stock-based compensation in connection with restricted common stock award grants and restricted common stock unit grants |
|
|
|
|
|
|
77,250
|
|
77,250
|
Net loss |
|
|
|
|
|
|
|
(4,844,666)
|
(4,844,666)
|
Issuance of common stock for services |
|
|
|
|
$ 147
|
|
1,442,055
|
|
1,442,202
|
Issuance of common stock for services, shares |
|
|
|
|
147,341
|
|
|
|
|
Stock options granted for services |
|
|
|
|
|
|
137,650
|
|
137,650
|
Issuance of preferred stock for cash |
|
|
|
$ 922
|
|
|
5,529,082
|
|
5,530,004
|
Issuance of preferred stock for cash, shares |
|
|
|
921,666
|
|
|
|
|
|
Issuance of preferred stock and common stock in connection with the Share Exchange Agreement |
|
|
$ 107
|
|
$ 581
|
|
12,640,292
|
|
12,640,980
|
Issuance of preferred stock and common stock in connection with the Share Exchange Agreement, shares |
|
|
106,894
|
|
581,053
|
|
|
|
|
Issuance of common stock for exercise of warrants |
|
|
|
|
$ 10
|
|
69,990
|
|
70,000
|
Issuance of common stock for exercise of warrants, shares |
|
|
|
|
10,000
|
|
|
|
|
Ending balance, value at Oct. 31, 2020 |
|
|
$ 107
|
$ 922
|
$ 3,664
|
|
61,060,826
|
(37,389,738)
|
23,675,781
|
Ending balance, shares at Oct. 31, 2020 |
|
|
106,894
|
921,666
|
3,664,019
|
|
|
|
|
Issuance of common stock for prepaid services |
|
|
|
|
$ 5
|
|
56,245
|
|
56,250
|
Issuance of common stock for prepaid services, shares |
|
|
|
|
5,009
|
|
|
|
|
Net loss |
|
|
|
|
|
|
|
(3,700,580)
|
(3,700,580)
|
Issuance of common stock for services |
|
|
|
|
$ 8
|
|
1,590
|
|
1,598
|
Issuance of common stock for services, shares |
|
|
|
|
7,688
|
|
|
|
|
Stock options granted for services |
|
|
|
|
|
|
2,925
|
|
2,925
|
Conversion of preferred stock into common stock |
|
|
$ (107)
|
$ (922)
|
$ 1,991
|
|
(962)
|
|
|
Conversion of preferred stock into common stock, shares |
|
|
(106,894)
|
(921,666)
|
1,990,606
|
|
|
|
|
Stock-based compensation in connection with restricted common stock award grants and restricted common stock unit grants |
|
|
|
|
|
|
1,145,595
|
|
1,145,595
|
Issuance of common stock for exercise of warrants |
|
|
|
|
$ 202
|
|
1,179,794
|
|
1,179,996
|
Issuance of common stock for exercise of warrants, shares |
|
|
|
|
202,429
|
|
|
|
|
Common stock to be issued for cash |
|
|
|
|
|
$ 794
|
8,370,373
|
|
8,371,167
|
Common stock to be issued for cash, shares |
|
|
|
|
|
794,136
|
|
|
|
Ending balance, value at Jan. 31, 2021 |
|
|
|
|
$ 5,870
|
$ 794
|
71,816,386
|
(41,090,318)
|
30,732,732
|
Ending balance, shares at Jan. 31, 2021 |
|
|
|
|
5,869,751
|
794,136
|
|
|
|
Beginning balance, value at Apr. 30, 2021 |
|
|
|
|
$ 7,065
|
|
74,467,686
|
(43,975,046)
|
30,499,705
|
Beginning balance, shares at Apr. 30, 2021 |
|
|
|
|
7,065,621
|
|
|
|
|
Issuance of common stock for prepaid services |
|
|
|
|
$ 25
|
|
258,475
|
|
258,500
|
Issuance of common stock for prepaid services, shares |
|
|
|
|
25,000
|
|
|
|
|
Stock-based compensation in connection with restricted common stock award grants and restricted common stock unit grants |
|
|
|
|
|
|
232,443
|
|
232,443
|
Net loss |
|
|
|
|
|
|
|
(3,549,715)
|
(3,549,715)
|
Ending balance, value at Jul. 31, 2021 |
|
|
|
|
$ 7,090
|
|
74,958,604
|
(47,524,761)
|
27,440,933
|
Ending balance, shares at Jul. 31, 2021 |
|
|
|
|
7,090,621
|
|
|
|
|
Beginning balance, value at Apr. 30, 2021 |
|
|
|
|
$ 7,065
|
|
74,467,686
|
(43,975,046)
|
30,499,705
|
Beginning balance, shares at Apr. 30, 2021 |
|
|
|
|
7,065,621
|
|
|
|
|
Net loss |
|
|
|
|
|
|
|
|
(12,178,285)
|
Ending balance, value at Jan. 31, 2022 |
|
|
|
|
$ 7,097
|
|
76,156,708
|
(56,153,331)
|
20,010,474
|
Ending balance, shares at Jan. 31, 2022 |
|
|
|
|
7,096,723
|
|
|
|
|
Beginning balance, value at Jul. 31, 2021 |
|
|
|
|
$ 7,090
|
|
74,958,604
|
(47,524,761)
|
27,440,933
|
Beginning balance, shares at Jul. 31, 2021 |
|
|
|
|
7,090,621
|
|
|
|
|
Stock-based compensation in connection with restricted common stock award grants and restricted common stock unit grants |
|
|
|
|
|
|
184,531
|
|
184,531
|
Net loss |
|
|
|
|
|
|
|
(4,293,310)
|
(4,293,310)
|
Issuance of common stock for services |
|
|
|
|
$ 6
|
|
47,494
|
|
47,500
|
Issuance of common stock for services, shares |
|
|
|
|
5,647
|
|
|
|
|
Issuance of common stock for accrued services |
|
|
|
|
$ 1
|
|
4,999
|
|
5,000
|
Issuance of common stock for accrued services, shares |
|
|
|
|
455
|
|
|
|
|
Ending balance, value at Oct. 31, 2021 |
|
|
|
|
$ 7,097
|
|
75,195,628
|
(51,818,071)
|
23,384,654
|
Ending balance, shares at Oct. 31, 2021 |
|
|
|
|
7,096,723
|
|
|
|
|
Stock-based compensation in connection with restricted common stock award grants and restricted common stock unit grants |
|
|
|
|
|
|
785,007
|
|
785,007
|
Net loss |
|
|
|
|
|
|
|
(4,335,260)
|
(4,335,260)
|
Stock options granted for services |
|
|
|
|
|
|
176,073
|
|
176,073
|
Ending balance, value at Jan. 31, 2022 |
|
|
|
|
$ 7,097
|
|
$ 76,156,708
|
$ (56,153,331)
|
$ 20,010,474
|
Ending balance, shares at Jan. 31, 2022 |
|
|
|
|
7,096,723
|
|
|
|
|