{
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  "archive_root": "union-staging",
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  "bytes": 1414470748,
  "file": "2026-08-27T17.parquet",
  "generated_by": "tools/orderbook_ab/merge_ab.py",
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  "hour_utc": "2026-08-27T17:00:00+00:00",
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      "columns": [
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        "sequence",
        "timestamp",
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        "witness_set",
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      "columns": [
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        "sequence",
        "timestamp",
        "market",
        "id",
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        "outcomes",
        "question",
        "slug",
        "witness_set",
        "arrival_skew",
        "source_witness"
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      "max_sequence": 122723089851031502,
      "min_sequence": 281476012669974,
      "order_by": [
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        "id",
        "timestamp",
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      "sha256": "af314b5e8aebf75c721892f3fece21b42e368a7a903a7837bf1e18ca302d5dbb"
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      "columns": [
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        "sequence",
        "timestamp",
        "market",
        "asset_id",
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        "size",
        "side",
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        "best_ask",
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      "max_sequence": 123004564830319769,
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      "order_by": [
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        "timestamp",
        "sequence"
      ],
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      "row_groups": [
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      "sha256": "0b35fde0523c2def068a8cf8c64c548ef25b217540dedf39138ff8321d8a30b5"
    },
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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": 49821071560877592,
      "min_sequence": 281476014860501,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 4772,
      "row_groups": [
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        488
      ],
      "sha256": "137b24a6331d01b678568191bb4be1ba76f4232ec2bef0ad3710f7fba1f3cb08"
    }
  },
  "row_count": 126498531,
  "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": "a1a83af8733a890785a34061bbc7665bec1ccbc06f5104597ad441a16660e73d",
  "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."
}