Auth0 account registration strategy

Hey, Auth0 community!

I’m a newbie in Auth0 and I really need your help.
I’m creating a service and want to use Auth0 as an account management service.
My use case is creating accounts using auth0 and login through the auth0, then I want to obtain JWT and validate it on my own backend.
And use JWT created by auth0 to authorize accounts on my backend.

How I can implement this? I read a lot of articles. but I have got an error Screenshot 2020-03-12 at 11.47.55|559x500

And an error in the browser console

ERROR Error: Uncaught (in promise): Error: Unauthorized

Hi @workspace.main,

welcome to the community.

Depending on the technology stack you’re using, you should check out the Quickstarts. They provide ready-to-go sample apps that show you how to do it.

(By the way: better to paste source code in there and code-format it, rather than a screenshot that’s external.)