| Linking domain | Status | Title | Country/Lang | Category | AI files | Contact | AI-protection |
|---|---|---|---|---|---|---|---|
| collatz-lab.org ↗ | 200 | Collatz / Syracuse Conditional Cycles — Lean 4 Formal Proof | en | science | robotsllmsaihumans | emailphone | none |
1 linking domains point to ccchallenge.org from their homepage — each shown with its tech stack, contacts and AI policy.
Homepage outbound links from our live crawl (not a full backlink index).