{
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  "file": "2026-08-27T18.parquet",
  "generated_by": "tools/orderbook_ab/merge_ab.py",
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        "timestamp",
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        "assets_ids",
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      "columns": [
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        "timestamp",
        "market",
        "id",
        "assets_ids",
        "outcomes",
        "question",
        "slug",
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        "arrival_skew",
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      "max_sequence": 124974889662974211,
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      "order_by": [
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        "sequence"
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      "sha256": "02a785464b3cdc185761d892c44d340ac26fb7a3943ee6e8183ec65a0892897b"
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      "columns": [
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        "market",
        "asset_id",
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        "size",
        "side",
        "best_bid",
        "best_ask",
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      "order_by": [
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      "sha256": "321a75c61a4984284f66ecf576292e640898a240337ef73a79903fc8cd4542d6"
    },
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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": 49821071666467779,
      "min_sequence": 281476132561968,
      "order_by": [
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        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 5920,
      "row_groups": [
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      "sha256": "e5b0931013bf8bc9db8e8aa643d595053614b635c3bb93c8c12215cf929991df"
    }
  },
  "row_count": 127950684,
  "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: a, b, c, h, e)",
  "sha256": "bc7d635abfce9bd02388c22aceb4fdb71bc7015e1b31457a438ed8f0f6fdfc18",
  "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"
  },
  "witnesses": "abche",
  "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."
}