Login with Kipper.
Kipper is already where Quai meets X. MetaSPN uses that social-money identity as the audience entry point for connection receipts and future proof-of-energy-saved rebates.
Kipper identity receipt
This creates a local receipt for your X/Kipper identity. It does not claim server verification yet. When MetaSPN gets Kipper/Twitter auth, this receipt becomes the binding primitive.
No Kipper identity receipt yet. Enter your X handle.
What this proves: the browser created a MetaSPN receipt binding an X handle to the local session and optional Quai address.
What this does not prove yet: Kipper/Twitter account control. That needs a backend auth integration or Kipper API. No imaginary OAuth was harmed.