New users typically receive 10000 tokens.
However, if you sign up using a referral link (e.g., jaehwa.f.choi@gmail.com),
you'll receive 15000 tokens instead.
To claim the bonus, visit the registration site using the following link format:
https://ai.cafalab.com/u?RID=referral_email_or_CAFA_ID
For example: https://ai.cafalab.com/u?RID=jaehwa.f.choi@gmail.com.