{
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  "bytes": 789227962,
  "file": "2026-08-28T04.parquet",
  "generated_by": "tools/orderbook_ab/merge_ab.py",
  "hour": "2026-08-28/04",
  "hour_utc": "2026-08-28T04:00:00+00:00",
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        "asset_id",
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      "columns": [
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        "sequence",
        "timestamp",
        "market",
        "id",
        "assets_ids",
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        "witness_set",
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      "columns": [
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        "sequence",
        "timestamp",
        "market",
        "id",
        "assets_ids",
        "outcomes",
        "question",
        "slug",
        "witness_set",
        "arrival_skew",
        "source_witness"
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      "max_sequence": 129759964457935383,
      "min_sequence": 281477095982173,
      "order_by": [
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        "timestamp",
        "sequence"
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      "row_count": 3522,
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      ],
      "sha256": "2634d0dc210015fb73cc1f27dcb4236b4ddac7e346aa478e1c875dcc2fcc40d5"
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      "columns": [
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        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "price",
        "size",
        "side",
        "best_bid",
        "best_ask",
        "witness_set",
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      "max_sequence": 129759964459482337,
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        "sequence"
      ],
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      "sha256": "c6a8b2ffcd82e557e8678e7a2453e0d2e89759d1d00d9c6a5b43e9145147715e"
    },
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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": 49821072616586383,
      "min_sequence": 281477098451140,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 1772,
      "row_groups": [
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      ],
      "sha256": "1dfff7dbb5bdb1a308ed4c8d71fee3231dc4c8ce8ff8b7403cfa4733101e6f3e"
    }
  },
  "row_count": 73504293,
  "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": "e1d7bda351fe60d7e7282243ea0b34ddfdfa32f268ed101e2356e241bc886369",
  "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."
}