{
  "ab_accounting": {
    "best_bid_ask": {
      "boundary_dropped": 271,
      "class": "PARTIAL",
      "exception_markets": 95024,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 1605125,
        "e": 1603186,
        "h": 1605144
      },
      "rows_c": 1605125,
      "rows_e": 1603186,
      "rows_h": 1605144,
      "rows_joined": 1605462,
      "rows_merged": 1605191,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 260,
            "100_200ms": 10624,
            "10_20ms": 61436,
            "1_2ms": 0,
            "2000_5000ms": 16,
            "200_500ms": 16231,
            "20_50ms": 24998,
            "2_5ms": 885343,
            "5000_10000ms": 0,
            "500_1000ms": 4289,
            "50_100ms": 10041,
            "5_10ms": 591887,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 3405,
          "mean_ms": 11.597769021104275,
          "measurable": 1605125,
          "min_ms": 2,
          "p50_ms": 4.0,
          "p90_ms": 8.0,
          "p99_ms": 246.0,
          "rows": 1605125,
          "unmeasurable": 0,
          "won_output_rows": 126
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 2420,
            "1000_2000ms": 10302,
            "100_200ms": 89482,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 5415,
            "200_500ms": 57843,
            "20_50ms": 1253917,
            "2_5ms": 0,
            "5000_10000ms": 2296,
            "500_1000ms": 26677,
            "50_100ms": 154834,
            "5_10ms": 0,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 23549,
          "mean_ms": 123.5496224393177,
          "measurable": 1603186,
          "min_ms": 40,
          "p50_ms": 43.0,
          "p90_ms": 125.0,
          "p99_ms": 1231.0,
          "rows": 1603186,
          "unmeasurable": 0,
          "won_output_rows": 1603053
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 38,
            "1000_2000ms": 2203,
            "100_200ms": 14224,
            "10_20ms": 1436816,
            "1_2ms": 0,
            "2000_5000ms": 1907,
            "200_500ms": 19218,
            "20_50ms": 97964,
            "2_5ms": 0,
            "5000_10000ms": 491,
            "500_1000ms": 7547,
            "50_100ms": 22017,
            "5_10ms": 2719,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 29395,
          "mean_ms": 29.428231361173825,
          "measurable": 1605144,
          "min_ms": 9,
          "p50_ms": 11.0,
          "p90_ms": 20.0,
          "p99_ms": 398.0,
          "rows": 1605144,
          "unmeasurable": 0,
          "won_output_rows": 2012
        }
      }
    },
    "book": {
      "boundary_dropped": 104,
      "class": "PARTIAL",
      "exception_markets": 58321,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 119208,
        "e": 43454,
        "h": 36916
      },
      "rows_c": 119208,
      "rows_e": 43454,
      "rows_h": 36916,
      "rows_joined": 143053,
      "rows_merged": 142949,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 704,
            "1000_2000ms": 402,
            "100_200ms": 342,
            "10_20ms": 3615,
            "1_2ms": 0,
            "2000_5000ms": 1316,
            "200_500ms": 465,
            "20_50ms": 1333,
            "2_5ms": 2909,
            "5000_10000ms": 332,
            "500_1000ms": 226,
            "50_100ms": 520,
            "5_10ms": 13529,
            "ge30000ms": 93515,
            "neg": 0
          },
          "max_ms": 8126170736,
          "mean_ms": 111826986.53559324,
          "measurable": 119208,
          "min_ms": 2,
          "p50_ms": 1283918.0,
          "p90_ms": 11552912.700000001,
          "p99_ms": 2536657709.0,
          "rows": 119208,
          "unmeasurable": 0,
          "won_output_rows": 87412
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 1441,
            "1000_2000ms": 1777,
            "100_200ms": 2819,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 2812,
            "200_500ms": 1934,
            "20_50ms": 8891,
            "2_5ms": 0,
            "5000_10000ms": 963,
            "500_1000ms": 1350,
            "50_100ms": 3099,
            "5_10ms": 0,
            "ge30000ms": 18368,
            "neg": 0
          },
          "max_ms": 4909998833,
          "mean_ms": 20022062.748147465,
          "measurable": 43454,
          "min_ms": 40,
          "p50_ms": 3552.0,
          "p90_ms": 1649630.2,
          "p99_ms": 202352158.0,
          "rows": 43454,
          "unmeasurable": 0,
          "won_output_rows": 43362
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 156,
            "1000_2000ms": 594,
            "100_200ms": 1072,
            "10_20ms": 12312,
            "1_2ms": 0,
            "2000_5000ms": 1422,
            "200_500ms": 1363,
            "20_50ms": 5770,
            "2_5ms": 0,
            "5000_10000ms": 226,
            "500_1000ms": 576,
            "50_100ms": 1491,
            "5_10ms": 0,
            "ge30000ms": 11934,
            "neg": 0
          },
          "max_ms": 8125984408,
          "mean_ms": 47351434.094755664,
          "measurable": 36916,
          "min_ms": 10,
          "p50_ms": 57.0,
          "p90_ms": 1605476.0,
          "p99_ms": 2016805321.85,
          "rows": 36916,
          "unmeasurable": 0,
          "won_output_rows": 12175
        }
      }
    },
    "last_trade_price": {
      "boundary_dropped": 0,
      "class": "PARTIAL",
      "exception_markets": 1173,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 11021,
        "e": 10819,
        "h": 11021
      },
      "rows_c": 11021,
      "rows_e": 10819,
      "rows_h": 11021,
      "rows_joined": 11024,
      "rows_merged": 11024,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 1,
            "100_200ms": 241,
            "10_20ms": 2840,
            "1_2ms": 0,
            "2000_5000ms": 1,
            "200_500ms": 168,
            "20_50ms": 1968,
            "2_5ms": 0,
            "5000_10000ms": 0,
            "500_1000ms": 62,
            "50_100ms": 496,
            "5_10ms": 5244,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 3995,
          "mean_ms": 26.784320842028855,
          "measurable": 11021,
          "min_ms": 5,
          "p50_ms": 10.0,
          "p90_ms": 44.0,
          "p99_ms": 323.79999999999563,
          "rows": 11021,
          "unmeasurable": 0
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 565,
            "1000_2000ms": 671,
            "100_200ms": 1179,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 692,
            "200_500ms": 846,
            "20_50ms": 3241,
            "2_5ms": 0,
            "5000_10000ms": 359,
            "500_1000ms": 589,
            "50_100ms": 2677,
            "5_10ms": 0,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 23611,
          "mean_ms": 1492.3393104723173,
          "measurable": 10819,
          "min_ms": 43,
          "p50_ms": 80.0,
          "p90_ms": 4096.400000000005,
          "p99_ms": 17432.419999999976,
          "rows": 10819,
          "unmeasurable": 0,
          "won_output_rows": 10819
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 146,
            "100_200ms": 515,
            "10_20ms": 5920,
            "1_2ms": 0,
            "2000_5000ms": 54,
            "200_500ms": 684,
            "20_50ms": 2644,
            "2_5ms": 0,
            "5000_10000ms": 1,
            "500_1000ms": 226,
            "50_100ms": 831,
            "5_10ms": 0,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 5298,
          "mean_ms": 90.54777243444333,
          "measurable": 11021,
          "min_ms": 12,
          "p50_ms": 18.0,
          "p90_ms": 201.0,
          "p99_ms": 1299.7999999999956,
          "rows": 11021,
          "unmeasurable": 0,
          "won_output_rows": 205
        }
      }
    },
    "market_resolved": {
      "boundary_dropped": 0,
      "class": "PARTIAL",
      "exception_markets": 1179,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 1179,
        "e": 1179,
        "h": 1179
      },
      "rows_c": 1179,
      "rows_e": 1179,
      "rows_h": 1179,
      "rows_joined": 1200,
      "rows_merged": 1200,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 25,
            "1000_2000ms": 0,
            "100_200ms": 7,
            "10_20ms": 12,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 1,
            "20_50ms": 5,
            "2_5ms": 526,
            "5000_10000ms": 0,
            "500_1000ms": 0,
            "50_100ms": 3,
            "5_10ms": 537,
            "ge30000ms": 63,
            "neg": 0
          },
          "max_ms": 62599,
          "mean_ms": 3254.60983884648,
          "measurable": 1179,
          "min_ms": 3,
          "p50_ms": 5.0,
          "p90_ms": 9.0,
          "p99_ms": 59390.880000000005,
          "rows": 1179,
          "unmeasurable": 0
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 25,
            "1000_2000ms": 3,
            "100_200ms": 128,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 58,
            "20_50ms": 840,
            "2_5ms": 0,
            "5000_10000ms": 0,
            "500_1000ms": 15,
            "50_100ms": 47,
            "5_10ms": 0,
            "ge30000ms": 63,
            "neg": 0
          },
          "max_ms": 62715,
          "mean_ms": 3323.3494486853265,
          "measurable": 1179,
          "min_ms": 40,
          "p50_ms": 43.0,
          "p90_ms": 313.80000000000064,
          "p99_ms": 59506.880000000005,
          "rows": 1179,
          "unmeasurable": 0,
          "won_output_rows": 1179
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 14,
            "1000_2000ms": 0,
            "100_200ms": 4,
            "10_20ms": 979,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 1,
            "20_50ms": 105,
            "2_5ms": 0,
            "5000_10000ms": 0,
            "500_1000ms": 0,
            "50_100ms": 22,
            "5_10ms": 1,
            "ge30000ms": 53,
            "neg": 0
          },
          "max_ms": 62682,
          "mean_ms": 2496.396098388465,
          "measurable": 1179,
          "min_ms": 9,
          "p50_ms": 13.0,
          "p90_ms": 34.200000000000045,
          "p99_ms": 51221.88,
          "rows": 1179,
          "unmeasurable": 0,
          "won_output_rows": 21
        }
      }
    },
    "new_market": {
      "boundary_dropped": 0,
      "class": "PARTIAL",
      "exception_markets": 1156,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 1156,
        "e": 1156,
        "h": 1156
      },
      "rows_c": 1156,
      "rows_e": 1156,
      "rows_h": 1156,
      "rows_joined": 1715,
      "rows_merged": 1715,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 119,
            "1000_2000ms": 0,
            "100_200ms": 147,
            "10_20ms": 87,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 114,
            "20_50ms": 288,
            "2_5ms": 0,
            "5000_10000ms": 0,
            "500_1000ms": 15,
            "50_100ms": 259,
            "5_10ms": 13,
            "ge30000ms": 114,
            "neg": 0
          },
          "max_ms": 84315,
          "mean_ms": 6108.141868512111,
          "measurable": 1156,
          "min_ms": 7,
          "p50_ms": 84.0,
          "p90_ms": 26719.0,
          "p99_ms": 50707.25000000019,
          "rows": 1156,
          "unmeasurable": 0,
          "won_output_rows": 163
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 111,
            "1000_2000ms": 8,
            "100_200ms": 194,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 430,
            "20_50ms": 40,
            "2_5ms": 0,
            "5000_10000ms": 2,
            "500_1000ms": 85,
            "50_100ms": 137,
            "5_10ms": 0,
            "ge30000ms": 149,
            "neg": 0
          },
          "max_ms": 57301,
          "mean_ms": 7219.705882352941,
          "measurable": 1156,
          "min_ms": 44,
          "p50_ms": 263.5,
          "p90_ms": 33461.5,
          "p99_ms": 52865.85000000003,
          "rows": 1156,
          "unmeasurable": 0,
          "won_output_rows": 1156
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 153,
            "1000_2000ms": 0,
            "100_200ms": 268,
            "10_20ms": 57,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 196,
            "20_50ms": 150,
            "2_5ms": 0,
            "5000_10000ms": 1,
            "500_1000ms": 19,
            "50_100ms": 192,
            "5_10ms": 0,
            "ge30000ms": 120,
            "neg": 0
          },
          "max_ms": 79725,
          "mean_ms": 6861.972318339101,
          "measurable": 1156,
          "min_ms": 14,
          "p50_ms": 168.5,
          "p90_ms": 30388.5,
          "p99_ms": 51405.7,
          "rows": 1156,
          "unmeasurable": 0,
          "won_output_rows": 396
        }
      }
    },
    "price_change": {
      "boundary_dropped": 3132,
      "class": "PARTIAL",
      "exception_markets": 144179,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 17043624,
        "e": 16992680,
        "h": 17027398
      },
      "rows_c": 17043624,
      "rows_e": 16992680,
      "rows_h": 17027398,
      "rows_joined": 17048160,
      "rows_merged": 17045028,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 2800,
            "100_200ms": 171000,
            "10_20ms": 764996,
            "1_2ms": 0,
            "2000_5000ms": 288,
            "200_500ms": 195360,
            "20_50ms": 321114,
            "2_5ms": 8725500,
            "5000_10000ms": 0,
            "500_1000ms": 42936,
            "50_100ms": 164454,
            "5_10ms": 6655176,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 3565,
          "mean_ms": 12.7846656321449,
          "measurable": 17043624,
          "min_ms": 2,
          "p50_ms": 4.0,
          "p90_ms": 9.0,
          "p99_ms": 252.0,
          "rows": 17043624,
          "unmeasurable": 0,
          "won_output_rows": 7573
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 59900,
            "1000_2000ms": 196934,
            "100_200ms": 1221544,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 107282,
            "200_500ms": 776884,
            "20_50ms": 12218620,
            "2_5ms": 0,
            "5000_10000ms": 48204,
            "500_1000ms": 363688,
            "50_100ms": 1999624,
            "5_10ms": 0,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 23759,
          "mean_ms": 191.41633656374393,
          "measurable": 16992680,
          "min_ms": 40,
          "p50_ms": 43.0,
          "p90_ms": 175.0,
          "p99_ms": 2697.0,
          "rows": 16992680,
          "unmeasurable": 0,
          "won_output_rows": 16990444
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 604,
            "1000_2000ms": 25020,
            "100_200ms": 240219,
            "10_20ms": 14811317,
            "1_2ms": 0,
            "2000_5000ms": 19002,
            "200_500ms": 247314,
            "20_50ms": 1254640,
            "2_5ms": 0,
            "5000_10000ms": 2838,
            "500_1000ms": 82964,
            "50_100ms": 328836,
            "5_10ms": 14644,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 29396,
          "mean_ms": 30.65680604869869,
          "measurable": 17027398,
          "min_ms": 9,
          "p50_ms": 12.0,
          "p90_ms": 25.0,
          "p99_ms": 410.0,
          "rows": 17027398,
          "unmeasurable": 0,
          "won_output_rows": 47011
        }
      }
    },
    "tick_size_change": {
      "boundary_dropped": 0,
      "class": "PARTIAL",
      "exception_markets": 145,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 580,
        "e": 580,
        "h": 580
      },
      "rows_c": 580,
      "rows_e": 580,
      "rows_h": 580,
      "rows_joined": 580,
      "rows_merged": 580,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 0,
            "100_200ms": 16,
            "10_20ms": 12,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 20,
            "20_50ms": 16,
            "2_5ms": 298,
            "5000_10000ms": 0,
            "500_1000ms": 20,
            "50_100ms": 0,
            "5_10ms": 198,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 805,
          "mean_ms": 45.08620689655172,
          "measurable": 580,
          "min_ms": 2,
          "p50_ms": 4.0,
          "p90_ms": 25.100000000000023,
          "p99_ms": 803.0,
          "rows": 580,
          "unmeasurable": 0
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 12,
            "100_200ms": 8,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 28,
            "200_500ms": 0,
            "20_50ms": 486,
            "2_5ms": 0,
            "5000_10000ms": 0,
            "500_1000ms": 24,
            "50_100ms": 22,
            "5_10ms": 0,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 4011,
          "mean_ms": 226.5103448275862,
          "measurable": 580,
          "min_ms": 41,
          "p50_ms": 43.0,
          "p90_ms": 594.0,
          "p99_ms": 2811.0,
          "rows": 580,
          "unmeasurable": 0,
          "won_output_rows": 580
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 0,
            "100_200ms": 0,
            "10_20ms": 498,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 28,
            "20_50ms": 18,
            "2_5ms": 0,
            "5000_10000ms": 0,
            "500_1000ms": 36,
            "50_100ms": 0,
            "5_10ms": 0,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 902,
          "mean_ms": 72.02586206896552,
          "measurable": 580,
          "min_ms": 10,
          "p50_ms": 12.0,
          "p90_ms": 284.0,
          "p99_ms": 867.0,
          "rows": 580,
          "unmeasurable": 0
        }
      }
    }
  },
  "archive_root": "union-staging",
  "boundary_guard": "cache",
  "bytes": 223696096,
  "file": "2026-08-31T23.parquet",
  "generated_by": "tools/orderbook_ab/merge_ab.py",
  "hour": "2026-08-31/23",
  "hour_utc": "2026-08-31T23:00:00+00:00",
  "layout": "union-event-sorted-v1",
  "max_sequence": 53198776138305640,
  "merger_git_sha": "4b62fc9b20e966fbf2a7877895dbf6e0f609dfb6",
  "min_sequence": 281485445467126,
  "products": {
    "best_bid_ask": {
      "byte_range": [
        4,
        28296396
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "best_bid",
        "best_ask",
        "spread",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198776135293563,
      "min_sequence": 281485445467406,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 1605191,
      "row_groups": [
        0,
        6
      ],
      "sha256": "a65a58e489b9fef1d18327d2dcf9504efb15b51529d0f0456e9580973a1f72b5"
    },
    "book": {
      "byte_range": [
        28296396,
        44387273
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "bids",
        "asks",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198776138214270,
      "min_sequence": 281485445471246,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 142949,
      "row_groups": [
        7,
        7
      ],
      "sha256": "4f5c88da63d342f8d406641ff614bc47a999869168313b0c01bdcdd21881d4bb"
    },
    "last_trade_price": {
      "byte_range": [
        44387273,
        45065557
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "price",
        "size",
        "side",
        "fee_rate_bps",
        "transaction_hash",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198776127500682,
      "min_sequence": 281485445476154,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 11024,
      "row_groups": [
        8,
        8
      ],
      "sha256": "8bf4bcdb1ad4102a551e83f16aee977db00b0d67f93d058ccffc05dc955f91f7"
    },
    "market_resolved": {
      "byte_range": [
        45065557,
        45256811
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "id",
        "assets_ids",
        "winning_asset_id",
        "winning_outcome",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198776138176678,
      "min_sequence": 281485445479508,
      "order_by": [
        "market",
        "id",
        "timestamp",
        "sequence"
      ],
      "row_count": 1200,
      "row_groups": [
        9,
        9
      ],
      "sha256": "4bf70aece924e14f18f6b201ff705fd3aca764c20e3ba180418ca5d77db01e09"
    },
    "new_market": {
      "byte_range": [
        45256811,
        45430893
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "id",
        "assets_ids",
        "outcomes",
        "question",
        "slug",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198776138305640,
      "min_sequence": 281485445528235,
      "order_by": [
        "market",
        "id",
        "timestamp",
        "sequence"
      ],
      "row_count": 1715,
      "row_groups": [
        10,
        10
      ],
      "sha256": "417af17f977bfa7986d50be8ae461e6469ab3f96f9e2314c5176d651727d199c"
    },
    "price_change": {
      "byte_range": [
        45430893,
        223443914
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "price",
        "size",
        "side",
        "best_bid",
        "best_ask",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198776138291702,
      "min_sequence": 281485445467126,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 17045028,
      "row_groups": [
        11,
        76
      ],
      "sha256": "3c9d155653a53fe24dd65dc2a04fa6b50a55a57557c8ab1e9f81c37f604a4401"
    },
    "tick_size_change": {
      "byte_range": [
        223443914,
        223465635
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "old_tick_size",
        "new_tick_size",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 281485463754559,
      "min_sequence": 281485445530520,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 580,
      "row_groups": [
        77,
        77
      ],
      "sha256": "c8624196c55b4deff59de59e207610c9d263b80294a10782bdb6089506b4c912"
    }
  },
  "row_count": 18807687,
  "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: b, c, h, e)",
  "sha256": "75799a47b669100526ed1e8632f25ad0fc57f4e2ff6198afe6e62aaaa13199df",
  "supersedes": {
    "manifest_sha256": "1618bc6c64f34df52521d9b34764aff2b9764226e82a5710228962bd1eb0f53b",
    "reason": "witnesses_added",
    "row_count_before": 18807687,
    "witnesses_before": "che"
  },
  "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"
  },
  "witness_stats": "2026-08-31T23.witness_stats.json",
  "witnesses": "bche",
  "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."
}