{
  "schema": "varexis-public-evidence-record/0.3",
  "generated_at_utc": "2026-10-16T02:40:06.177Z",
  "record_id": "VXI-EXT-PROCUREMENT-CLOUDTRAIL-VALIDATION-01-v1",
  "record_kind": "external_reference",
  "title": "CloudTrail integrity: Digest delivery is separate from validation",
  "system": "AWS CloudTrail",
  "evidence_family": "vendor_evidence_review",
  "index_status": "PUBLIC_SAFE_SOURCE_REVIEW",
  "evidence_state": "PRIMARY_DOCUMENTATION_REVIEW_ONLY",
  "canonical_question": "Does enabling CloudTrail log-file integrity validation prove the delivered files were validated?",
  "near_questions": [
    "Does CloudTrail automatically validate every delivered file?",
    "What does enabling digest delivery establish?",
    "Which files are bound by the digest?",
    "How are regional signing keys relevant?",
    "Does moving logs change the validation procedure?",
    "What interval did the validator cover?",
    "Can a configuration screenshot prove verification passed?",
    "Which failures or missing files were reported?",
    "Does integrity prove every activity was logged?",
    "What result should procurement retain?",
    "When should an integrity claim require more evidence?",
    "Can I save a CloudTrail validation review?"
  ],
  "supported_claims": [
    {
      "claim": "Enabling the feature delivers signed digest files. The documentation explicitly separates that from actually validating the logs, which requires a validation operation or equivalent implementation. Retain the verification result, coverage interval and file locations before asserting that an integrity check passed.",
      "reliance": "DOCUMENTED_CAPABILITY_ONLY"
    }
  ],
  "not_demonstrated_claims": [
    "Verified buyer configuration or effective access rights",
    "Independent execution, completeness or security testing",
    "Vendor certification, legal compliance or guaranteed suitability"
  ],
  "public_summary": "Enabling the feature delivers signed digest files. The documentation explicitly separates that from actually validating the logs, which requires a validation operation or equivalent implementation. Retain the verification result, coverage interval and file locations before asserting that an integrity check passed.",
  "related_record_ids": [
    "VXI-EXT-PROCUREMENT-ENTRA-RETENTION-01-v1",
    "VXI-EXT-PROCUREMENT-NOTION-AGENT-AUDIT-01-v1",
    "VXI-EXT-PROCUREMENT-GITLAB-AUDIT-DEDUPE-01-v1",
    "VXI-EXT-PROCUREMENT-GCP-SINK-EXCLUSIONS-01-v1",
    "VXI-EXT-PROCUREMENT-S3-LOG-COMPLETENESS-01-v1"
  ],
  "source_review": {
    "source_type": "official_external_documentation",
    "source_title": "CloudTrail integrity validation scope",
    "source_url": "https://docs.aws.amazon.com/awscloudtrail/latest/userguide/cloudtrail-log-file-validation-intro.html",
    "checked_on": "2026-10-16",
    "candidate_record_id": "VXI-EXT-PROCUREMENT-CLOUDTRAIL-VALIDATION-01-v1",
    "candidate_record_sha256": "6a5c327653670a028967247f2559ce26d626cf36053d2ce32728384f85fa0e0a",
    "method": "Primary documentation reviewed for the published bounded statement.",
    "deployment_tested_by_varexis": false,
    "revalidation": "The delivered snapshot preserves the review date shown. Recheck current primary documentation and deployment context before relying on present applicability; payment does not trigger fresh research."
  },
  "answer_policy": {
    "classification": "DOCUMENTED_WITH_DEPLOYMENT_BOUNDARY",
    "bounded_answer": "Enabling the feature delivers signed digest files. The documentation explicitly separates that from actually validating the logs, which requires a validation operation or equivalent implementation. Retain the verification result, coverage interval and file locations before asserting that an integrity check passed.",
    "required_buyer_context": "AWS CloudTrail: Trail settings, digest identity, validator result and interval; buyer configuration and operational evidence are required.",
    "missing_evidence": "A broader claim needs evidence matching the intended use. Payment does not upgrade the evidence state."
  },
  "private_boundary": "Raw logs, thresholds, private paths, source code, protected mechanisms and reconstruction-level details are excluded from public and paid delivery.",
  "decision_profile": {
    "schema": "varexis-vendor-evidence-review/1",
    "review_status": "documentation_review_only",
    "checked_on": "2026-10-16",
    "claim_to_check": "The enabled setting proves an integrity validation completed successfully.",
    "documented_statement": {
      "status": "documented",
      "statement": "Enabling the feature delivers signed digest files. The documentation explicitly separates that from actually validating the logs, which requires a validation operation or equivalent implementation. Retain the verification result, coverage interval and file locations before asserting that an integrity check passed.",
      "source_ids": [
        "cloudtrail-integrity"
      ]
    },
    "buyer_evidence_required": [
      "Trail configuration and delivered log/digest identities.",
      "Validation method, time interval and file locations.",
      "Recorded verification outcome and any missing or invalid files."
    ],
    "review_condition": {
      "status": "varexis_review_policy",
      "statement": "Require an actual validation outcome before claiming validated integrity."
    },
    "unknowns": "The buyer configuration, contract, effective entitlement and operational evidence have not been inspected. Missing evidence does not establish absence or failure of the feature.",
    "evidence_sources": [
      {
        "source_id": "cloudtrail-integrity",
        "url": "https://docs.aws.amazon.com/awscloudtrail/latest/userguide/cloudtrail-log-file-validation-intro.html",
        "final_url": "https://docs.aws.amazon.com/awscloudtrail/latest/userguide/cloudtrail-log-file-validation-intro.html",
        "title": "CloudTrail integrity validation scope",
        "checked_on": "2026-10-16",
        "sha256": "b1917d40b0be876c6af91a9983d645593755372d6621c9b5a6152bd73346403d",
        "bytes": 17209
      }
    ],
    "observed_deployment": false,
    "commercial_reliance_boundary": "Procurement evidence support only; no supplier clearance, legal conclusion, configuration audit or verification of the buyer's claim is supplied.",
    "paid_value": {
      "decision_context": "Save the difference between having integrity material and demonstrating a completed check.",
      "free": "Complete review, practical questions, sources and limitations; may be saved locally.",
      "single_request": "Existing server-saved version-bound route snapshot for later authenticated retrieval.",
      "evidence_receipt": "The same snapshot plus the existing unsigned delivery receipt.",
      "excluded": [
        "Fresh vendor research",
        "Continuous monitoring or change alerts",
        "Testing the buyer configuration",
        "Private evidence or vendor certification"
      ],
      "integrity": "Hashes identify content versions; they do not prove truth or provide a signature."
    },
    "revalidation": {
      "trigger": "A saved purchase does not recheck the source or buyer configuration.",
      "specific_watch": "Trail settings, digest identity, validator result and interval"
    }
  },
  "paid_access_note": "The full published answer and boundaries are free. Paid access saves the selected route and source versions, with an unsigned receipt when purchased. Preview coverage before paying. Fresh research, bespoke assessment and protected evidence are excluded.",
  "service_route": {
    "request_guide": "/varexis-index/request.html",
    "request_workflow": "/varexis-index/request-workflow.json",
    "service_id": "single_request",
    "service_routes_url": "/varexis-index/service-routes.json",
    "payment_required": true,
    "availability_endpoint": "/api/index/capabilities",
    "operational_status": "AUTOMATIC_SERVICE_CAPABILITIES_GATED",
    "checkout_url": "/index-access"
  },
  "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#cloudtrail-digest-generation-validation",
  "machine_readable_record": "/varexis-index/records/cloudtrail-digest-generation-validation.json"
}