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  "generated_by": "tools/orderbook_ab/merge_ab.py",
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      "columns": [
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    "last_trade_price": {
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      "columns": [
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      "columns": [
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        "market",
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      "columns": [
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        "sequence",
        "timestamp",
        "market",
        "id",
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        "outcomes",
        "question",
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      "max_sequence": 53198775895165230,
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      "columns": [
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      "columns": [
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        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "old_tick_size",
        "new_tick_size",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198775873788030,
      "min_sequence": 281485124027005,
      "order_by": [
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      "row_count": 4192,
      "row_groups": [
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      "sha256": "1a70c8ddecb0b382c1641432f171a6bd701465756428861af3e66eb5d5a66ecd"
    }
  },
  "row_count": 100997978,
  "sequence_note": "sequence and timestamp_received are collector-local provenance; where domains carry the same row, the merge keeps the LAST ACTIVE domain's values -- for this hour, domain e (active: b, c, h, e)",
  "sha256": "7656acf09670ad036dfb506024344dc0bf0c3d934efbf68c335ebd2af30a2a71",
  "supersedes": {
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    "reason": "witnesses_added",
    "row_count_before": 100997978,
    "witnesses_before": "che"
  },
  "verification": {
    "note": "A range digest certifies BYTES. That those bytes are that product comes from this manifest and is cross-checkable against the Parquet footer, which is inside the whole-file sha256.",
    "primary": "sha256sum <file> == .sha256",
    "secondary": "curl -r <start>-<end-1> <url> | sha256sum == .products.<name>.sha256"
  },
  "witness_stats": "2026-08-31T19.witness_stats.json",
  "witnesses": "bche",
  "served_verbatim": true,
  "served_note": "This hour is the merger's union file, published byte for byte. Hours before the era cutover are rebuilt here from the seven product files and carry one column fewer."
}