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  "file": "2026-09-01T14.parquet",
  "generated_by": "tools/orderbook_ab/merge_ab.py",
  "hour": "2026-09-01/14",
  "hour_utc": "2026-09-01T14:00:00+00:00",
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        "timestamp",
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        "witness_set",
        "arrival_skew",
        "source_witness"
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      "max_sequence": 53198777366914011,
      "min_sequence": 281486590805483,
      "order_by": [
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        "timestamp",
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      ],
      "sha256": "61bafb1fe7ded322dffa383a987097e786064bdef272ca9ebdcad356f847dd6a"
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    "book": {
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      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "bids",
        "asks",
        "witness_set",
        "arrival_skew",
        "source_witness"
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      "max_sequence": 53198777366251507,
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    "last_trade_price": {
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      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "price",
        "size",
        "side",
        "fee_rate_bps",
        "transaction_hash",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198777360396818,
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      "order_by": [
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      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "id",
        "assets_ids",
        "winning_asset_id",
        "winning_outcome",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198777355594451,
      "min_sequence": 281486591396661,
      "order_by": [
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        "sequence"
      ],
      "row_count": 862,
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    "new_market": {
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      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "id",
        "assets_ids",
        "outcomes",
        "question",
        "slug",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198777358658492,
      "min_sequence": 281486591234154,
      "order_by": [
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      "row_count": 1311,
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      "sha256": "e501f9d11b54fd2b1dca34f8d25f761d150b72e378a1815d7f2d1dabd0e17c22"
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    "price_change": {
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      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "price",
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        "side",
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        "best_ask",
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        "source_witness"
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      "max_sequence": 53198777366914043,
      "min_sequence": 281486590805191,
      "order_by": [
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        "timestamp",
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      ],
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      ],
      "sha256": "277972735f9cdb7e0d78dce6b768b2d65d3f56de8f37901d227195307210ee1e"
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    "tick_size_change": {
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      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "old_tick_size",
        "new_tick_size",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 281486684579687,
      "min_sequence": 281486592240570,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 2504,
      "row_groups": [
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      ],
      "sha256": "4c456916609c287b1e6860d2fc8fc6c1817196f310acb5c3dddf009941832086"
    }
  },
  "row_count": 96230062,
  "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: c, h, e)",
  "sha256": "9ae6e0ddaf69f4dcfa068bab5e859106d94963e7e7a9c7092f3b1de00c01a799",
  "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": "2026-09-01T14.witness_stats.json",
  "witnesses": "che",
  "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."
}