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25CAIN-42 Top 25 › KEYSTONE › Limits

Limits

What KEYSTONE does not prove, and what the public evidence does not yet show. We would rather you read this here than discover it yourself.

LimitWhy it mattersStatus
Live fixing is off on the public siteYou cannot watch a new fix be made and signed today; the ledger holds runs from Oct 14-15Open (needs model API credit)
Small, narrow evidence: 4 fixes meet today's rule, all on one sample, one detector checkIt proves the loop works, not that it works across many kinds of defectOpen
Record 2 was signed VERIFIED_FIX under an older rule with no reference testUnder today's rule it would be NOT_VERIFIED; the record is kept, never rewrittenDisclosed 2026-11-02; flagged by the re-run kit
The reference test's hash is not inside the recordA reader cannot prove from the record alone which reference test ranPartly addressed: tests published + re-run reproduces; schema change planned
Passing tests is not the same as a correct fixTests can miss things; that is why we ask reviewers to write their ownInherent
One signing key on one hostCompromise of that host could sign false records going forwardOpen
Python onlyOther languages are not coveredOpen
The sandbox limits are our own testsNo third party has tried to escape itOpen (independent review wanted)
No certification, no third-party auditEverything here is checkable, but nobody independent has checked it yetA paid independent review is being commissioned

FIRME AI CORPORATION · CAIN-42 is a Byzantine trust fabric. Numbers marked "our own check" were run by us, not by an independent party. Nothing on these pages is a certification.