spec: HINT chip - #917
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August 10, 2026 15:07
Kimi Code ReviewAutomated review by Kimi (Moonshot AI) |
Codex Code ReviewNo issues found in the PR changes. The new constraint specification also passes the repository’s structural validation. |
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Description:
Specifies the hint
ECALLimplemented in #876, asECALLnumber-31.The chip constrains where the hinted value lands and that it is 32 bytes, but never the value itself — a prover may return anything. Soundness therefore rests on an obligation on the calling program: verify the hint, and recompute in software when the check fails. That obligation is declared as
HNT-A1and discussed in the chapter.