Is your feature request related to a problem? Please describe.
Yes,
When the user signs up with username, email and password there are no checks to make sure if the email belongs to the user.

Describe the solution you'd like
We should be able to verify the user's email. this can also be a form of authenticity check

Describe alternatives you've considered
upon sign-up, we'll send user a link on their email which can be used to verify their email and activate OpenRegistry account

Additional context
use sendgrid email api to send email and JWT link for verification within