Reason-Root-Cross-Region-Clock-Skew

The model receives the prompt (and optional system message). The run uses scorer rubric_json_metrics with the JSON configuration below. Pass/fail and partial credit are determined entirely by that scorer against the model output; no human grading.

Return JSON only with keys answer, evidence, constraints. Tokens minted in region A are rejected as not yet valid in region B for two minutes after failover. Identify the likely root cause and mitigation.

{
  "metrics": {
    "accuracy": {
      "checks": [
        {
          "contains": [
            "clock skew"
          ]
        },
        {
          "contains": [
            "not yet valid"
          ]
        },
        {
          "contains": [
            "region"
          ]
        }
      ]
    },
    "evidence": {
      "checks": [
        {
          "contains": [
            "tokens minted"
          ]
        },
        {
          "contains": [
            "failover"
          ]
        },
        {
          "contains": [
            "two minutes"
          ]
        }
      ]
    },
    "constraint": {
      "checks": [
        {
          "contains": [
            "NTP"
          ]
        },
        {
          "contains": [
            "leeway"
          ]
        },
        {
          "contains": [
            "iat"
          ]
        }
      ]
    }
  }
}