{
  "canonical_serialization": "UTF-8 JSON wrappers; ensure_ascii=False; sort_keys=True; separators=(',', ':'); one LF after every row",
  "checkpoint_unit": "one released Assistant record, after its text or combined recorded tool call/result",
  "clocks": {
    "first_record_timestamp": "2026-07-18T21:29:27.806896Z",
    "last_record_timestamp": "2026-07-18T11:28:09.228227Z",
    "limitation": "Recorded clocks do not establish equal-duration steps or the model's original context windows. Tool-output clocks are not aligned.",
    "maximum_precise_utc_timestamp": "2026-07-18T21:29:27.846926Z",
    "minimum_precise_utc_timestamp": "2026-07-18T01:02:54.354148Z",
    "order_basis": "original JSONL physical line, never timestamp",
    "regressions_between_successive_precise_records": [
      {
        "previous_source_line": 2,
        "source_line": 3
      },
      {
        "previous_source_line": 1231,
        "source_line": 1232
      },
      {
        "previous_source_line": 1235,
        "source_line": 1236
      }
    ],
    "repeated_precise_timestamps": 697,
    "status_counts": {
      "missing": 1,
      "precise_utc": 2061,
      "reduced_precision": 2
    },
    "status_definition": {
      "missing": "Null, absent, or empty timestamp",
      "precise_utc": "Valid ISO date and clock through seconds, with explicit UTC Z or +00:00",
      "reduced_precision": "Present but not a verified full UTC timestamp; preserved verbatim"
    }
  },
  "context_regime": "archive_prefix",
  "counts": {
    "assistant_text": 700,
    "assistant_tool_results": 1361,
    "blank_lines": 0,
    "checkpoints": 2061,
    "message_records": 2064,
    "metadata_records_withheld": 1,
    "physical_lines": 2065,
    "roles": {
      "Assistant": 2061,
      "Human": 2,
      "System": 1
    }
  },
  "coverage": {
    "coverage_outside_observed_index_range": "unknown; no endpoint inferred",
    "duplicate_message_indices": [],
    "image_evidence": "Only source text is included. Image placeholders do not supply pixels.",
    "image_only_results": 227,
    "image_placeholder_count": 227,
    "messages_with_image_placeholders": 227,
    "messages_with_redactions": 1405,
    "missing_index_count_within_observed_range": 81,
    "missing_index_ranges_within_observed_range": [
      [
        1,
        81
      ]
    ],
    "observed_message_index_max": 2144,
    "observed_message_index_min": 0,
    "redaction_marker_count": 7693
  },
  "estimated_input_tokens": {
    "assumptions": "One response per Assistant checkpoint, full available archive prefix, no prompt or output tokens, no cache discount. Multiply for variants and replicates. Provider token counts must be checked before execution.",
    "byte_div_4_alternative": {
      "full_pass": 678346720,
      "largest_prefix": 661060,
      "method": "ceil(prefix UTF-8 bytes / 4) for each checkpoint; rough heuristic that can undercount this transcript"
    },
    "full_pass": 804846050,
    "largest_prefix": 789099,
    "largest_prefix_bytes": 2644239,
    "largest_prefix_chunk_sum": 789099,
    "limitation": "A surrogate tokenizer is not the target provider's tokenizer. Cumulative row counts approximate full-prefix tokenization at row boundaries; the largest-prefix count is exact only for o200k_base.",
    "method": "o200k_base surrogate: full_pass sums cumulative independently tokenized canonical rows; largest_prefix tokenizes the entire largest prefix in one call",
    "provider_verified": false,
    "tokenizer": "o200k_base",
    "tokenizer_package_version": "0.12.0"
  },
  "format": "mythos-probe-source-v1",
  "hash_conventions": {
    "latest_record": "canonical wrapper without LF",
    "prefix": "canonical wrapper rows including each trailing LF",
    "raw_line": "original physical-line bytes including original line ending"
  },
  "metadata_withheld_from_prompts": true,
  "outputs": [
    "records.jsonl",
    "checkpoints.jsonl",
    "source-map.jsonl",
    "manifest.json",
    "reader.html"
  ],
  "retrospective_annotations_included": false,
  "source_bytes": 2621187,
  "source_path": "mythos-transcript/transcript.jsonl",
  "source_sha256": "6f2a5a50b53640bd779a198cef8a620f2d6e2bbaaf4a0dea9edac87a69fc3e4b"
}