# C283 author review

Question: Which of the eight existing state combinations have both legs divisible by529?

Conclusion: Within the eight retained state configurations, only(s,f,r)=(1,0,1) yields both legs divisible by529; it occurs at all six positions.

The exact results were inspected against the source register and independently expressed domain identities in the checker. The second run verifies deterministic reproduction, not independent scientific review. No new agent review is claimed.

Limits:

- Uniqueness is confined to the eight admitted state choices and six positions.
- No probability or independent-necessity claim follows.
- Regular profile change is a composite operation, not regular Cainan460.

The report and checkpoint are authored interpretations. The verifier authenticates the supplied inputs and calculations; it does not prove historical intentionality. Original dependencies and all standing controls remain unchanged.