This is a an app that shows how to integrate with Promise.
Promise uses a simplified version of the Implicit Flow in OpenID Connect.
The Authentication Request is issued by redirecting the user to
https://promiseauthentication.org/a/ruby.promiseauthentication.org?nonce=32e8744d-7388-4061-ac68-1101987006fb
That is what happens when you click the green button. Go ahead.