Annual report pursuant to Section 13 and 15(d)

Summary of significant accounting policies (Details)

v3.19.2
Summary of significant accounting policies (Details) - shares
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Common stock equivalents, total 7,721,460 4,377,508
Convertible Notes [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Common stock equivalents, total 4,960,800 2,290,077
Options [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Common stock equivalents, total 2,127,317 1,338,859
Warrants [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Common stock equivalents, total 633,343 748,572