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        "title": "FHIR R5 query decoding context",
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          "What context is needed to decode FHIR audit queries?",
          "Does base64 make an audit query safe to publish?",
          "Why must an auditor retain the originating query format?"
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            "statement": "R5 AuditEvent.entity.query stores query input in a base64 container whose meaning depends on the originating event and query format. An audit consumer must understand that format before interpreting it. The encoding does not make the query self-describing or establish that its contents are safe for unrestricted disclosure.",
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            "integrity": "Hashes identify content versions; they do not prove truth or provide a signature."
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        "authority_boundary": "VAREXIS-INDEX informs evidence reliance. It does not provide advice, certification, deployment authority, security assurance, production approval, or guarantee.",
        "human_page": "/varexis-index/catalog.html#fhir-audit-query-format-context",
        "machine_readable_record": "/varexis-index/records/fhir-audit-query-format-context.json"
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  "boundary": "Catalogue additions are available free through the exact HTTP JSON links below. Enhanced natural-language discovery is not yet qualified for these records. They are outside MCP search, MCP preview and paid saved retrieval. No search qualification, executable capability or entitlement is added.",
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