DEMO APP — NOT HEYLOGRAM

Acme Notes

A pretend third-party app. It has no wallet code — it just trusts Heylogram for identity.

Sign in to continue. No account, no password.

HOW A SITE ADDS THIS
1. Button → redirect:
   https://web3.jjvoi.com/login
     ?app=YourApp&nonce=RANDOM
     &redirect=YOUR_RETURN_URL

2. On return, POST to:
   https://web3.jjvoi.com/api/auth/verify
   { message, signature, address }

3. Check ok + your nonce →
   you get { address, name }.