{
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  "generated_by": "tools/orderbook_ab/merge_ab.py",
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        "timestamp",
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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": 119345390322070279,
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      "order_by": [
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        "sequence"
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      "row_count": 529,
      "row_groups": [
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      "sha256": "4565285448aaf7b813578baac149e90976894e89626114ba7e96232df82f189a"
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      "columns": [
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        "sequence",
        "timestamp",
        "market",
        "asset_id",
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        "side",
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        "best_ask",
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      "max_sequence": 119345390366522928,
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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": 49821071135775343,
      "min_sequence": 281475632737343,
      "order_by": [
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        "timestamp",
        "sequence"
      ],
      "row_count": 3036,
      "row_groups": [
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      "sha256": "4a6d440af20a4e8c872bf9c68798f33f49e203179279786b5d61e7ecaa45613a"
    }
  },
  "row_count": 97929315,
  "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": "f47095a91177a6cb9c4d87686e577cfbdc85fcb1362db1b9ba9eb5542eaf67e5",
  "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."
}