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    "rate": 96000,
    "frames": 4801,
    "bext": {
      "low": 505032704,
      "high": 1,
      "sample_origin": 4800000000,
      "version": 0,
      "date_unverified": "2026-11-04",
      "time_unverified": "13:53:20"
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    "pcm_sha256": "334914d2126e2b22d1845d8cf776d76e17720593f6482ebd4cd321beeaa9a9ee"
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    "bext": {
      "low": 505128704,
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      "version": 0,
      "date_unverified": "2026-11-04",
      "time_unverified": "13:53:20"
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    "pcm_sha256": "334914d2126e2b22d1845d8cf776d76e17720593f6482ebd4cd321beeaa9a9ee"
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  "mapped_frames": [
    {
      "frame": 0,
      "relative_seconds": "0",
      "sample_count_since_declared_midnight": 4800000000,
      "seconds_since_declared_midnight": "50000",
      "utc_or_timezone_proven": false
    },
    {
      "frame": 2400,
      "relative_seconds": "1/40",
      "sample_count_since_declared_midnight": 4800002400,
      "seconds_since_declared_midnight": "2000001/40",
      "utc_or_timezone_proven": false
    },
    {
      "frame": 4800,
      "relative_seconds": "1/20",
      "sample_count_since_declared_midnight": 4800004800,
      "seconds_since_declared_midnight": "1000001/20",
      "utc_or_timezone_proven": false
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  "missing_origin_mapping": null,
  "rate_mismatch_rejected": "expected rate differs from fmt; no invented conversion",
  "original_hash_unchanged": true,
  "actual_file_bytes": 10256,
  "real_audio_or_clock_validation": false,
  "scope": "Fixed v0 bext metadata and mono PCM16 fmt only. TimeReference declared sample count since midnight, not UTC/timezone or evidence of correct device clock. No day rollover inference; no audio/ASR execution."
}