Historical accepted-work test across two provider families

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{
  "schemaVersion": 1,
  "publicSummaryVersion": "2026-09-30",
  "classification": "PUBLIC",
  "title": "Historical accepted-work test across two provider families",
  "summary": "A confirmation run on 6 September 2026 completed one bounded coding fixture through each of two live provider families. The initial attempts failed; later attempts produced accepted artifacts after independent checks. Seven checks passed, including complete-job accounting. Publication was limited to a scoped authorization: no external pull request was created. A negative control showed that verifier independence mattered. The sample is two task arms with deliberately constrained initial attempts, not a general task-success rate, comparative model ranking or cost-savings claim.",
  "date": "6 September 2026",
  "scope": "Historical evidence; the scope and environment are described in the recorded result.",
  "result": "A confirmation run on 6 September 2026 completed one bounded coding fixture through each of two live provider families. The initial attempts failed; later attempts produced accepted artifacts after independent checks. Seven checks passed, including complete-job accounting. Publication was limited to a scoped authorization: no external pull request was created. A negative control showed that verifier independence mattered. The sample is two task arms with deliberately constrained initial attempts, not a general task-success rate, comparative model ranking or cost-savings claim.",
  "sections": [],
  "currentDeployment": "Not independently verified by this historical evidence.",
  "canonical": "/evidence/phase-l-1"
}

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SHA-256 090e39655857d0cf8a768f32b8e1ddd7a8437e99dbce08e372450d701a88aa97