{
  "ab_accounting": {
    "best_bid_ask": {
      "boundary_dropped": 62,
      "class": "PARTIAL",
      "exception_markets": 72660,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 8653084,
        "e": 8646189,
        "h": 8651948
      },
      "rows_c": 8653084,
      "rows_e": 8646189,
      "rows_h": 8651948,
      "rows_joined": 8653630,
      "rows_merged": 8653568,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 305,
            "100_200ms": 43057,
            "10_20ms": 229287,
            "1_2ms": 0,
            "2000_5000ms": 22,
            "200_500ms": 53034,
            "20_50ms": 131300,
            "2_5ms": 6257957,
            "5000_10000ms": 0,
            "500_1000ms": 8613,
            "50_100ms": 56155,
            "5_10ms": 1873354,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 3330,
          "mean_ms": 8.27867451650764,
          "measurable": 8653084,
          "min_ms": 2,
          "p50_ms": 4.0,
          "p90_ms": 7.0,
          "p99_ms": 134.0,
          "rows": 8653084,
          "unmeasurable": 0,
          "won_output_rows": 468
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 12866,
            "1000_2000ms": 37496,
            "100_200ms": 395518,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 39985,
            "200_500ms": 239967,
            "20_50ms": 7020135,
            "2_5ms": 0,
            "5000_10000ms": 14995,
            "500_1000ms": 94175,
            "50_100ms": 791052,
            "5_10ms": 0,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 25532,
          "mean_ms": 117.60096546582547,
          "measurable": 8646189,
          "min_ms": 36,
          "p50_ms": 44.0,
          "p90_ms": 96.0,
          "p99_ms": 1366.0,
          "rows": 8646189,
          "unmeasurable": 0,
          "won_output_rows": 8646127
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 334,
            "1000_2000ms": 6530,
            "100_200ms": 58840,
            "10_20ms": 7964556,
            "1_2ms": 0,
            "2000_5000ms": 6589,
            "200_500ms": 68922,
            "20_50ms": 421027,
            "2_5ms": 0,
            "5000_10000ms": 2248,
            "500_1000ms": 24924,
            "50_100ms": 97066,
            "5_10ms": 50,
            "ge30000ms": 862,
            "neg": 0
          },
          "max_ms": 46913,
          "mean_ms": 28.734026025121743,
          "measurable": 8651948,
          "min_ms": 9,
          "p50_ms": 12.0,
          "p90_ms": 17.0,
          "p99_ms": 266.0,
          "rows": 8651948,
          "unmeasurable": 0,
          "won_output_rows": 6973
        }
      }
    },
    "book": {
      "boundary_dropped": 8,
      "class": "PARTIAL",
      "exception_markets": 15802,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 133163,
        "e": 133644,
        "h": 140757
      },
      "rows_c": 133163,
      "rows_e": 133644,
      "rows_h": 140757,
      "rows_joined": 155408,
      "rows_merged": 155400,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 540,
            "1000_2000ms": 902,
            "100_200ms": 1703,
            "10_20ms": 15505,
            "1_2ms": 0,
            "2000_5000ms": 1552,
            "200_500ms": 1608,
            "20_50ms": 6717,
            "2_5ms": 29804,
            "5000_10000ms": 360,
            "500_1000ms": 593,
            "50_100ms": 3064,
            "5_10ms": 66791,
            "ge30000ms": 4024,
            "neg": 0
          },
          "max_ms": 6544583999,
          "mean_ms": 5801903.3915126575,
          "measurable": 133163,
          "min_ms": 2,
          "p50_ms": 6.0,
          "p90_ms": 60.0,
          "p99_ms": 6525502.140000029,
          "rows": 133163,
          "unmeasurable": 0,
          "won_output_rows": 5366
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 4899,
            "1000_2000ms": 9679,
            "100_200ms": 12270,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 14709,
            "200_500ms": 10080,
            "20_50ms": 48619,
            "2_5ms": 0,
            "5000_10000ms": 5835,
            "500_1000ms": 7130,
            "50_100ms": 13473,
            "5_10ms": 0,
            "ge30000ms": 6950,
            "neg": 0
          },
          "max_ms": 2657027643,
          "mean_ms": 4404200.2393298615,
          "measurable": 133644,
          "min_ms": 38,
          "p50_ms": 129.0,
          "p90_ms": 8309.099999999991,
          "p99_ms": 11210482.0,
          "rows": 133644,
          "unmeasurable": 0,
          "won_output_rows": 133636
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 1394,
            "1000_2000ms": 1390,
            "100_200ms": 5573,
            "10_20ms": 75081,
            "1_2ms": 0,
            "2000_5000ms": 2090,
            "200_500ms": 6151,
            "20_50ms": 28707,
            "2_5ms": 0,
            "5000_10000ms": 659,
            "500_1000ms": 1939,
            "50_100ms": 7585,
            "5_10ms": 0,
            "ge30000ms": 10188,
            "neg": 0
          },
          "max_ms": 7476577287,
          "mean_ms": 12152042.244868817,
          "measurable": 140757,
          "min_ms": 10,
          "p50_ms": 18.0,
          "p90_ms": 2146.0,
          "p99_ms": 18956010.320000187,
          "rows": 140757,
          "unmeasurable": 0,
          "won_output_rows": 16398
        }
      }
    },
    "last_trade_price": {
      "boundary_dropped": 1,
      "class": "PARTIAL",
      "exception_markets": 3252,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 59881,
        "e": 58391,
        "h": 59837
      },
      "rows_c": 59881,
      "rows_e": 58391,
      "rows_h": 59837,
      "rows_joined": 59930,
      "rows_merged": 59929,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 5,
            "100_200ms": 1080,
            "10_20ms": 12192,
            "1_2ms": 0,
            "2000_5000ms": 10,
            "200_500ms": 606,
            "20_50ms": 9491,
            "2_5ms": 13,
            "5000_10000ms": 0,
            "500_1000ms": 153,
            "50_100ms": 2378,
            "5_10ms": 33953,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 4730,
          "mean_ms": 22.19697399843022,
          "measurable": 59881,
          "min_ms": 4,
          "p50_ms": 9.0,
          "p90_ms": 38.0,
          "p99_ms": 233.0,
          "rows": 59881,
          "unmeasurable": 0,
          "won_output_rows": 12
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 1888,
            "1000_2000ms": 4269,
            "100_200ms": 4968,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 6325,
            "200_500ms": 4425,
            "20_50ms": 16847,
            "2_5ms": 0,
            "5000_10000ms": 2482,
            "500_1000ms": 3503,
            "50_100ms": 13684,
            "5_10ms": 0,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 25650,
          "mean_ms": 1315.7556644003357,
          "measurable": 58391,
          "min_ms": 41,
          "p50_ms": 87.0,
          "p90_ms": 4022.0,
          "p99_ms": 14358.499999999993,
          "rows": 58391,
          "unmeasurable": 0,
          "won_output_rows": 58390
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 268,
            "100_200ms": 2797,
            "10_20ms": 33882,
            "1_2ms": 0,
            "2000_5000ms": 67,
            "200_500ms": 2966,
            "20_50ms": 14698,
            "2_5ms": 0,
            "5000_10000ms": 54,
            "500_1000ms": 910,
            "50_100ms": 4192,
            "5_10ms": 0,
            "ge30000ms": 3,
            "neg": 0
          },
          "max_ms": 45235,
          "mean_ms": 71.7462606748333,
          "measurable": 59837,
          "min_ms": 12,
          "p50_ms": 18.0,
          "p90_ms": 128.0,
          "p99_ms": 761.0,
          "rows": 59837,
          "unmeasurable": 0,
          "won_output_rows": 1527
        }
      }
    },
    "market_resolved": {
      "boundary_dropped": 0,
      "class": "PARTIAL",
      "exception_markets": 1154,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 1154,
        "e": 1154,
        "h": 1154
      },
      "rows_c": 1154,
      "rows_e": 1154,
      "rows_h": 1154,
      "rows_joined": 1179,
      "rows_merged": 1179,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 5,
            "1000_2000ms": 0,
            "100_200ms": 8,
            "10_20ms": 34,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 13,
            "20_50ms": 22,
            "2_5ms": 792,
            "5000_10000ms": 0,
            "500_1000ms": 0,
            "50_100ms": 9,
            "5_10ms": 225,
            "ge30000ms": 46,
            "neg": 0
          },
          "max_ms": 61620,
          "mean_ms": 2386.3128249566726,
          "measurable": 1154,
          "min_ms": 2,
          "p50_ms": 4.0,
          "p90_ms": 13.700000000000045,
          "p99_ms": 60777.79000000001,
          "rows": 1154,
          "unmeasurable": 0,
          "won_output_rows": 21
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 9,
            "100_200ms": 134,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 1,
            "200_500ms": 65,
            "20_50ms": 829,
            "2_5ms": 0,
            "5000_10000ms": 0,
            "500_1000ms": 41,
            "50_100ms": 45,
            "5_10ms": 0,
            "ge30000ms": 30,
            "neg": 0
          },
          "max_ms": 62209,
          "mean_ms": 1428.9913344887348,
          "measurable": 1154,
          "min_ms": 39,
          "p50_ms": 44.0,
          "p90_ms": 282.0,
          "p99_ms": 57424.52000000006,
          "rows": 1154,
          "unmeasurable": 0,
          "won_output_rows": 1154
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 1,
            "100_200ms": 13,
            "10_20ms": 875,
            "1_2ms": 0,
            "2000_5000ms": 1,
            "200_500ms": 12,
            "20_50ms": 155,
            "2_5ms": 0,
            "5000_10000ms": 0,
            "500_1000ms": 9,
            "50_100ms": 62,
            "5_10ms": 0,
            "ge30000ms": 26,
            "neg": 0
          },
          "max_ms": 60962,
          "mean_ms": 1177.894280762565,
          "measurable": 1154,
          "min_ms": 10,
          "p50_ms": 12.0,
          "p90_ms": 54.0,
          "p99_ms": 56810.080000000045,
          "rows": 1154,
          "unmeasurable": 0,
          "won_output_rows": 4
        }
      }
    },
    "new_market": {
      "boundary_dropped": 0,
      "class": "PARTIAL",
      "exception_markets": 1596,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 1596,
        "e": 1596,
        "h": 1596
      },
      "rows_c": 1596,
      "rows_e": 1596,
      "rows_h": 1596,
      "rows_joined": 2243,
      "rows_merged": 2243,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 281,
            "1000_2000ms": 0,
            "100_200ms": 228,
            "10_20ms": 110,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 177,
            "20_50ms": 387,
            "2_5ms": 0,
            "5000_10000ms": 1,
            "500_1000ms": 3,
            "50_100ms": 341,
            "5_10ms": 32,
            "ge30000ms": 36,
            "neg": 0
          },
          "max_ms": 73014,
          "mean_ms": 4447.027568922305,
          "measurable": 1596,
          "min_ms": 6,
          "p50_ms": 87.0,
          "p90_ms": 20160.0,
          "p99_ms": 32141.9,
          "rows": 1596,
          "unmeasurable": 0,
          "won_output_rows": 220
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 311,
            "1000_2000ms": 2,
            "100_200ms": 267,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 439,
            "20_50ms": 56,
            "2_5ms": 0,
            "5000_10000ms": 0,
            "500_1000ms": 123,
            "50_100ms": 361,
            "5_10ms": 0,
            "ge30000ms": 37,
            "neg": 0
          },
          "max_ms": 130021,
          "mean_ms": 4879.06015037594,
          "measurable": 1596,
          "min_ms": 45,
          "p50_ms": 240.0,
          "p90_ms": 20002.0,
          "p99_ms": 35856.7,
          "rows": 1596,
          "unmeasurable": 0,
          "won_output_rows": 1596
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 239,
            "1000_2000ms": 0,
            "100_200ms": 409,
            "10_20ms": 41,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 428,
            "20_50ms": 196,
            "2_5ms": 0,
            "5000_10000ms": 0,
            "500_1000ms": 3,
            "50_100ms": 234,
            "5_10ms": 0,
            "ge30000ms": 46,
            "neg": 0
          },
          "max_ms": 47367,
          "mean_ms": 4064.1729323308273,
          "measurable": 1596,
          "min_ms": 15,
          "p50_ms": 183.5,
          "p90_ms": 19060.5,
          "p99_ms": 35249.9,
          "rows": 1596,
          "unmeasurable": 0,
          "won_output_rows": 427
        }
      }
    },
    "price_change": {
      "boundary_dropped": 744,
      "class": "PARTIAL",
      "exception_markets": 127600,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 77555295,
        "e": 77229960,
        "h": 77487798
      },
      "rows_c": 77555295,
      "rows_e": 77229960,
      "rows_h": 77487798,
      "rows_joined": 77571640,
      "rows_merged": 77570896,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 3456,
            "100_200ms": 454544,
            "10_20ms": 2366645,
            "1_2ms": 0,
            "2000_5000ms": 184,
            "200_500ms": 554278,
            "20_50ms": 1341322,
            "2_5ms": 52640173,
            "5000_10000ms": 0,
            "500_1000ms": 87856,
            "50_100ms": 620837,
            "5_10ms": 19486000,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 3616,
          "mean_ms": 9.101874204720644,
          "measurable": 77555295,
          "min_ms": 2,
          "p50_ms": 4.0,
          "p90_ms": 7.0,
          "p99_ms": 164.0,
          "rows": 77555295,
          "unmeasurable": 0,
          "won_output_rows": 17850
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 182536,
            "1000_2000ms": 744508,
            "100_200ms": 4581382,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 938738,
            "200_500ms": 2723232,
            "20_50ms": 58001903,
            "2_5ms": 0,
            "5000_10000ms": 334724,
            "500_1000ms": 1240726,
            "50_100ms": 8482211,
            "5_10ms": 0,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 25679,
          "mean_ms": 186.4176706293775,
          "measurable": 77229960,
          "min_ms": 36,
          "p50_ms": 44.0,
          "p90_ms": 148.0,
          "p99_ms": 3792.0,
          "rows": 77229960,
          "unmeasurable": 0,
          "won_output_rows": 77229216
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 2982,
            "1000_2000ms": 72730,
            "100_200ms": 724933,
            "10_20ms": 69811200,
            "1_2ms": 0,
            "2000_5000ms": 59564,
            "200_500ms": 816221,
            "20_50ms": 4574730,
            "2_5ms": 0,
            "5000_10000ms": 20928,
            "500_1000ms": 269966,
            "50_100ms": 1128536,
            "5_10ms": 156,
            "ge30000ms": 5852,
            "neg": 0
          },
          "max_ms": 47578,
          "mean_ms": 30.001600213236152,
          "measurable": 77487798,
          "min_ms": 9,
          "p50_ms": 12.0,
          "p90_ms": 19.0,
          "p99_ms": 319.0,
          "rows": 77487798,
          "unmeasurable": 0,
          "won_output_rows": 323830
        }
      }
    },
    "tick_size_change": {
      "boundary_dropped": 0,
      "class": "PARTIAL",
      "exception_markets": 765,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 3060,
        "e": 3060,
        "h": 3060
      },
      "rows_c": 3060,
      "rows_e": 3060,
      "rows_h": 3060,
      "rows_joined": 3060,
      "rows_merged": 3060,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 0,
            "100_200ms": 0,
            "10_20ms": 60,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 0,
            "20_50ms": 24,
            "2_5ms": 2209,
            "5000_10000ms": 0,
            "500_1000ms": 0,
            "50_100ms": 0,
            "5_10ms": 767,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 41,
          "mean_ms": 4.448039215686275,
          "measurable": 3060,
          "min_ms": 2,
          "p50_ms": 4.0,
          "p90_ms": 6.0,
          "p99_ms": 15.0,
          "rows": 3060,
          "unmeasurable": 0
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 8,
            "100_200ms": 239,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 16,
            "200_500ms": 16,
            "20_50ms": 2525,
            "2_5ms": 0,
            "5000_10000ms": 0,
            "500_1000ms": 8,
            "50_100ms": 248,
            "5_10ms": 0,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 3894,
          "mean_ms": 76.89346405228758,
          "measurable": 3060,
          "min_ms": 38,
          "p50_ms": 44.0,
          "p90_ms": 96.0,
          "p99_ms": 523.0,
          "rows": 3060,
          "unmeasurable": 0,
          "won_output_rows": 3060
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 4,
            "100_200ms": 1,
            "10_20ms": 2835,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 0,
            "20_50ms": 204,
            "2_5ms": 0,
            "5000_10000ms": 0,
            "500_1000ms": 4,
            "50_100ms": 12,
            "5_10ms": 0,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 1986,
          "mean_ms": 17.487908496732025,
          "measurable": 3060,
          "min_ms": 10,
          "p50_ms": 12.0,
          "p90_ms": 17.0,
          "p99_ms": 45.0,
          "rows": 3060,
          "unmeasurable": 0
        }
      }
    }
  },
  "archive_root": "union-staging",
  "boundary_guard": "cache",
  "bytes": 830064096,
  "file": "2026-09-01T04.parquet",
  "generated_by": "tools/orderbook_ab/merge_ab.py",
  "hour": "2026-09-01/04",
  "hour_utc": "2026-09-01T04:00:00+00:00",
  "layout": "union-event-sorted-v1",
  "max_sequence": 53198776479258358,
  "merger_git_sha": "4b62fc9b20e966fbf2a7877895dbf6e0f609dfb6",
  "min_sequence": 281485718218176,
  "products": {
    "best_bid_ask": {
      "byte_range": [
        4,
        93429757
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "best_bid",
        "best_ask",
        "spread",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198776479258352,
      "min_sequence": 281485718218206,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 8653568,
      "row_groups": [
        0,
        33
      ],
      "sha256": "9242d3e59148a382b372620f2828b109cf64f08deb58e307384e218bdfd325c3"
    },
    "book": {
      "byte_range": [
        93429757,
        106867860
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "bids",
        "asks",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198776477852471,
      "min_sequence": 281485718220352,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 155400,
      "row_groups": [
        34,
        34
      ],
      "sha256": "66e89f3e7eedb31036f5d01d9f48f2410dc284992f6803e6ace32b9a720a4e8e"
    },
    "last_trade_price": {
      "byte_range": [
        106867860,
        110159939
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "price",
        "size",
        "side",
        "fee_rate_bps",
        "transaction_hash",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198776477853648,
      "min_sequence": 281485718219779,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 59929,
      "row_groups": [
        35,
        35
      ],
      "sha256": "22ba6651f076c1ee2e5fc9cb33d489ab26a4329fecc67cf1be83824e6f6561b3"
    },
    "market_resolved": {
      "byte_range": [
        110159939,
        110344350
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "id",
        "assets_ids",
        "winning_asset_id",
        "winning_outcome",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198776458000151,
      "min_sequence": 281485719643312,
      "order_by": [
        "market",
        "id",
        "timestamp",
        "sequence"
      ],
      "row_count": 1179,
      "row_groups": [
        36,
        36
      ],
      "sha256": "f62eb19a48a42bfdf3959587370324d87e740ec0dd8a1784948cf8b9d93a5830"
    },
    "new_market": {
      "byte_range": [
        110344350,
        110582875
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "id",
        "assets_ids",
        "outcomes",
        "question",
        "slug",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198776477661247,
      "min_sequence": 281485718536414,
      "order_by": [
        "market",
        "id",
        "timestamp",
        "sequence"
      ],
      "row_count": 2243,
      "row_groups": [
        37,
        37
      ],
      "sha256": "bd177dd4e7fd722ccd3d15aa588294d0029cdd9c45028ecb81a766b6d7ae4c96"
    },
    "price_change": {
      "byte_range": [
        110582875,
        828968643
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "price",
        "size",
        "side",
        "best_bid",
        "best_ask",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198776479258358,
      "min_sequence": 281485718218176,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 77570896,
      "row_groups": [
        38,
        333
      ],
      "sha256": "3d413bbfba4abce342cbd195a2153aff371797c6f191ade482efe65c0c5ac7eb"
    },
    "tick_size_change": {
      "byte_range": [
        828968643,
        829078347
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "old_tick_size",
        "new_tick_size",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 281485801514285,
      "min_sequence": 281485721217356,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 3060,
      "row_groups": [
        334,
        334
      ],
      "sha256": "e00e4495a2c8686cd253d6005e372b2028913bf1390e0e1e86b96dd5990f417e"
    }
  },
  "row_count": 86446275,
  "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": "3ac7a2b3029e82dd77a3d8fb4912c9bb7297c1f4ef7ce7a4fa049663a5f2de05",
  "supersedes": {
    "manifest_sha256": "b2d588202e1af3e2f0637e10ad2e18c09ec4f2c3ade49891a2e641f11fab7a18",
    "reason": "witnesses_added",
    "row_count_before": 86446275,
    "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": "2026-09-01T04.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."
}