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        "timestamp",
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        "timestamp",
        "market",
        "id",
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        "outcomes",
        "question",
        "slug",
        "witness_set",
        "arrival_skew",
        "source_witness"
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      "max_sequence": 121034240022112626,
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      "order_by": [
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      "sha256": "ad3f08486a41d3bae01071a5e16b2bb12ba0b4adca2c97c84811ecfbe1c2f829"
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      "columns": [
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        "market",
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        "side",
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        "best_ask",
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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": 49821071438930225,
      "min_sequence": 281475905827010,
      "order_by": [
        "market",
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        "timestamp",
        "sequence"
      ],
      "row_count": 3924,
      "row_groups": [
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      "sha256": "41bcce96b60886599608c963fa0c5660b672c4e696090fc7b792b594bbd85464"
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  },
  "row_count": 113763522,
  "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": "a67322e295c6ec20300bd7b2bd1d0bb3e87563b5a23e9ca3a5ede4d052482fa3",
  "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."
}