{
  "failures": [
    {
      "blockId": "native-02-block-0",
      "header": "Checking your browser - reCAPTCHA (https://pmc.ncbi.nlm.nih.gov/articles/PMC5491979/)",
      "reason": "PMC browser challenge; no substantive reading from this operation"
    },
    {
      "blockId": "native-02-block-2",
      "header": "Checking your browser - reCAPTCHA (https://pmc.ncbi.nlm.nih.gov/articles/PMC6001222/)",
      "reason": "PMC browser challenge; no substantive reading from this operation"
    },
    {
      "blockId": "native-03-block-1",
      "header": "Checking your browser - reCAPTCHA (https://pmc.ncbi.nlm.nih.gov/articles/PMC12568089/)",
      "reason": "PMC browser challenge; no substantive reading from this operation"
    },
    {
      "blockId": "native-04-block-0",
      "header": "Internal Error ()",
      "reason": "HTTP 429; no substantive reading"
    },
    {
      "blockId": "native-04-block-1",
      "header": "Checking your browser - reCAPTCHA (https://pmc.ncbi.nlm.nih.gov/articles/PMC9952291/)",
      "reason": "PMC browser challenge; no substantive reading from this operation"
    },
    {
      "blockId": "native-04-block-2",
      "header": "pubmed.ncbi.nlm.nih.gov (https://pubmed.ncbi.nlm.nih.gov/29942628/)",
      "reason": "Footer-only response; no substantive reading"
    },
    {
      "blockId": "native-04-block-3",
      "header": "ClinicalTrials.gov (https://clinicaltrials.gov/study/NCT03612063)",
      "reason": "Registry shell; no registry body or prespecification assessment"
    },
    {
      "blockId": "native-05-block-26",
      "header": "pubmed.ncbi.nlm.nih.gov (https://pubmed.ncbi.nlm.nih.gov/28538708/)",
      "reason": "Footer-only response; no substantive reading"
    },
    {
      "blockId": "native-08-block-21",
      "header": "ClinicalTrials.gov (https://clinicaltrials.gov/study/NCT03182439)",
      "reason": "Registry shell; no registry body or prespecification assessment"
    },
    {
      "blockId": "native-09-block-0",
      "header": "Internal Error ()",
      "reason": "HTTP 429; no substantive reading"
    }
  ],
  "retries": "No challenge bypass or alternate networking used. Retained evidence is explicitly distinguished from fresh reading.",
  "unreadComponents": [
    "Shcherbina supplements and firmware documentation",
    "Pasadyn plotted coefficient values and precise Fitbit model identity",
    "Registry bodies for both reported trials",
    "Methods for Van Oost 2025 and intense-exercise 2023"
  ]
}