{
  "ab_accounting": {
    "best_bid_ask": {
      "boundary_dropped": 108,
      "class": "PARTIAL",
      "exception_markets": 125789,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 7237072,
        "e": 7185381,
        "h": 7233734
      },
      "rows_c": 7237072,
      "rows_e": 7185381,
      "rows_h": 7233734,
      "rows_joined": 7239406,
      "rows_merged": 7239298,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 3006,
            "100_200ms": 96652,
            "10_20ms": 463253,
            "1_2ms": 0,
            "2000_5000ms": 533,
            "200_500ms": 137463,
            "20_50ms": 238646,
            "2_5ms": 2703023,
            "5000_10000ms": 140,
            "500_1000ms": 32225,
            "50_100ms": 106234,
            "5_10ms": 3455897,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 6786,
          "mean_ms": 18.55149209514566,
          "measurable": 7237072,
          "min_ms": 2,
          "p50_ms": 5.0,
          "p90_ms": 15.0,
          "p99_ms": 359.0,
          "rows": 7237072,
          "unmeasurable": 0,
          "won_output_rows": 2225
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 34785,
            "1000_2000ms": 82670,
            "100_200ms": 539235,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 72358,
            "200_500ms": 434063,
            "20_50ms": 4622719,
            "2_5ms": 0,
            "5000_10000ms": 39906,
            "500_1000ms": 199467,
            "50_100ms": 1157926,
            "5_10ms": 0,
            "ge30000ms": 2252,
            "neg": 0
          },
          "max_ms": 53092,
          "mean_ms": 264.7337758429233,
          "measurable": 7185381,
          "min_ms": 37,
          "p50_ms": 48.0,
          "p90_ms": 263.0,
          "p99_ms": 5433.0,
          "rows": 7185381,
          "unmeasurable": 0,
          "won_output_rows": 7185275
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 766,
            "1000_2000ms": 16233,
            "100_200ms": 157304,
            "10_20ms": 4339630,
            "1_2ms": 0,
            "2000_5000ms": 10985,
            "200_500ms": 165340,
            "20_50ms": 2134875,
            "2_5ms": 0,
            "5000_10000ms": 5175,
            "500_1000ms": 55471,
            "50_100ms": 347277,
            "5_10ms": 0,
            "ge30000ms": 678,
            "neg": 0
          },
          "max_ms": 57512,
          "mean_ms": 55.89329065735622,
          "measurable": 7233734,
          "min_ms": 15,
          "p50_ms": 19.0,
          "p90_ms": 52.0,
          "p99_ms": 593.0,
          "rows": 7233734,
          "unmeasurable": 0,
          "won_output_rows": 51798
        }
      }
    },
    "book": {
      "boundary_dropped": 416,
      "class": "PARTIAL",
      "exception_markets": 176629,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 462813,
        "e": 463621,
        "h": 493927
      },
      "rows_c": 462813,
      "rows_e": 463621,
      "rows_h": 493927,
      "rows_joined": 966713,
      "rows_merged": 966297,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 36162,
            "1000_2000ms": 5169,
            "100_200ms": 3765,
            "10_20ms": 34910,
            "1_2ms": 0,
            "2000_5000ms": 13163,
            "200_500ms": 6103,
            "20_50ms": 12198,
            "2_5ms": 8443,
            "5000_10000ms": 13019,
            "500_1000ms": 3512,
            "50_100ms": 4675,
            "5_10ms": 88380,
            "ge30000ms": 233314,
            "neg": 0
          },
          "max_ms": 8199442514,
          "mean_ms": 88762203.55197455,
          "measurable": 462813,
          "min_ms": 3,
          "p50_ms": 31368.0,
          "p90_ms": 2999691.0,
          "p99_ms": 2108069002.0,
          "rows": 462813,
          "unmeasurable": 0,
          "won_output_rows": 214255
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 43621,
            "1000_2000ms": 13336,
            "100_200ms": 20691,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 24954,
            "200_500ms": 16895,
            "20_50ms": 36184,
            "2_5ms": 0,
            "5000_10000ms": 22954,
            "500_1000ms": 12512,
            "50_100ms": 29130,
            "5_10ms": 0,
            "ge30000ms": 243344,
            "neg": 0
          },
          "max_ms": 8199175242,
          "mean_ms": 91226252.12609653,
          "measurable": 463621,
          "min_ms": 39,
          "p50_ms": 37998.0,
          "p90_ms": 3715305.0,
          "p99_ms": 2101899112.0,
          "rows": 463621,
          "unmeasurable": 0,
          "won_output_rows": 463435
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 39430,
            "1000_2000ms": 7611,
            "100_200ms": 11676,
            "10_20ms": 13710,
            "1_2ms": 0,
            "2000_5000ms": 14665,
            "200_500ms": 14552,
            "20_50ms": 88048,
            "2_5ms": 0,
            "5000_10000ms": 14861,
            "500_1000ms": 8234,
            "50_100ms": 22523,
            "5_10ms": 0,
            "ge30000ms": 258617,
            "neg": 0
          },
          "max_ms": 8199438792,
          "mean_ms": 91864037.39401571,
          "measurable": 493927,
          "min_ms": 16,
          "p50_ms": 37642.0,
          "p90_ms": 3393406.00000002,
          "p99_ms": 2146637798.4999921,
          "rows": 493927,
          "unmeasurable": 0,
          "won_output_rows": 288607
        }
      }
    },
    "last_trade_price": {
      "boundary_dropped": 0,
      "class": "PARTIAL",
      "exception_markets": 3886,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 75459,
        "e": 69261,
        "h": 75235
      },
      "rows_c": 75459,
      "rows_e": 69261,
      "rows_h": 75235,
      "rows_joined": 75487,
      "rows_merged": 75487,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 114,
            "100_200ms": 2085,
            "10_20ms": 22840,
            "1_2ms": 0,
            "2000_5000ms": 112,
            "200_500ms": 1875,
            "20_50ms": 13788,
            "2_5ms": 0,
            "5000_10000ms": 0,
            "500_1000ms": 414,
            "50_100ms": 3635,
            "5_10ms": 30596,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 4976,
          "mean_ms": 38.23155620933222,
          "measurable": 75459,
          "min_ms": 5,
          "p50_ms": 11.0,
          "p90_ms": 54.0,
          "p99_ms": 465.41999999999825,
          "rows": 75459,
          "unmeasurable": 0,
          "won_output_rows": 171
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 2683,
            "1000_2000ms": 3990,
            "100_200ms": 8502,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 5474,
            "200_500ms": 6952,
            "20_50ms": 5819,
            "2_5ms": 0,
            "5000_10000ms": 4306,
            "500_1000ms": 4792,
            "50_100ms": 26623,
            "5_10ms": 0,
            "ge30000ms": 120,
            "neg": 0
          },
          "max_ms": 52888,
          "mean_ms": 1541.3114306752718,
          "measurable": 69261,
          "min_ms": 42,
          "p50_ms": 115.0,
          "p90_ms": 5154.0,
          "p99_ms": 17475.79999999993,
          "rows": 69261,
          "unmeasurable": 0,
          "won_output_rows": 69261
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 69,
            "1000_2000ms": 1163,
            "100_200ms": 5183,
            "10_20ms": 799,
            "1_2ms": 0,
            "2000_5000ms": 436,
            "200_500ms": 6222,
            "20_50ms": 49728,
            "2_5ms": 0,
            "5000_10000ms": 181,
            "500_1000ms": 2771,
            "50_100ms": 8682,
            "5_10ms": 0,
            "ge30000ms": 1,
            "neg": 0
          },
          "max_ms": 45882,
          "mean_ms": 157.14973084335747,
          "measurable": 75235,
          "min_ms": 17,
          "p50_ms": 30.0,
          "p90_ms": 324.0,
          "p99_ms": 1755.6600000000035,
          "rows": 75235,
          "unmeasurable": 0,
          "won_output_rows": 6055
        }
      }
    },
    "market_resolved": {
      "boundary_dropped": 0,
      "class": "PARTIAL",
      "exception_markets": 975,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 975,
        "e": 975,
        "h": 975
      },
      "rows_c": 975,
      "rows_e": 975,
      "rows_h": 975,
      "rows_joined": 987,
      "rows_merged": 987,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 0,
            "100_200ms": 9,
            "10_20ms": 66,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 25,
            "20_50ms": 29,
            "2_5ms": 331,
            "5000_10000ms": 0,
            "500_1000ms": 1,
            "50_100ms": 22,
            "5_10ms": 421,
            "ge30000ms": 71,
            "neg": 0
          },
          "max_ms": 67314,
          "mean_ms": 3758.2676923076924,
          "measurable": 975,
          "min_ms": 3,
          "p50_ms": 5.0,
          "p90_ms": 193.60000000000014,
          "p99_ms": 60317.04,
          "rows": 975,
          "unmeasurable": 0,
          "won_output_rows": 12
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 13,
            "100_200ms": 100,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 8,
            "200_500ms": 111,
            "20_50ms": 539,
            "2_5ms": 0,
            "5000_10000ms": 0,
            "500_1000ms": 62,
            "50_100ms": 83,
            "5_10ms": 0,
            "ge30000ms": 59,
            "neg": 0
          },
          "max_ms": 58915,
          "mean_ms": 3203.3702564102564,
          "measurable": 975,
          "min_ms": 41,
          "p50_ms": 48.0,
          "p90_ms": 700.8000000000001,
          "p99_ms": 58873.04,
          "rows": 975,
          "unmeasurable": 0,
          "won_output_rows": 975
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 2,
            "100_200ms": 86,
            "10_20ms": 404,
            "1_2ms": 0,
            "2000_5000ms": 1,
            "200_500ms": 18,
            "20_50ms": 305,
            "2_5ms": 0,
            "5000_10000ms": 1,
            "500_1000ms": 3,
            "50_100ms": 96,
            "5_10ms": 0,
            "ge30000ms": 59,
            "neg": 0
          },
          "max_ms": 59321,
          "mean_ms": 3099.8123076923075,
          "measurable": 975,
          "min_ms": 16,
          "p50_ms": 21.0,
          "p90_ms": 173.80000000000007,
          "p99_ms": 59279.04,
          "rows": 975,
          "unmeasurable": 0
        }
      }
    },
    "new_market": {
      "boundary_dropped": 0,
      "class": "PARTIAL",
      "exception_markets": 4134,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 4134,
        "e": 4134,
        "h": 4134
      },
      "rows_c": 4134,
      "rows_e": 4134,
      "rows_h": 4134,
      "rows_joined": 5875,
      "rows_merged": 5875,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 435,
            "1000_2000ms": 0,
            "100_200ms": 479,
            "10_20ms": 231,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 573,
            "20_50ms": 878,
            "2_5ms": 0,
            "5000_10000ms": 1,
            "500_1000ms": 16,
            "50_100ms": 1065,
            "5_10ms": 36,
            "ge30000ms": 420,
            "neg": 0
          },
          "max_ms": 149198,
          "mean_ms": 8024.503870343493,
          "measurable": 4134,
          "min_ms": 7,
          "p50_ms": 92.0,
          "p90_ms": 31522.9,
          "p99_ms": 117137.75000000003,
          "rows": 4134,
          "unmeasurable": 0,
          "won_output_rows": 589
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 504,
            "1000_2000ms": 33,
            "100_200ms": 684,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 1657,
            "20_50ms": 12,
            "2_5ms": 0,
            "5000_10000ms": 2,
            "500_1000ms": 296,
            "50_100ms": 403,
            "5_10ms": 0,
            "ge30000ms": 543,
            "neg": 0
          },
          "max_ms": 149093,
          "mean_ms": 9751.350507982583,
          "measurable": 4134,
          "min_ms": 45,
          "p50_ms": 302.0,
          "p90_ms": 37357.000000000015,
          "p99_ms": 116670.33000000003,
          "rows": 4134,
          "unmeasurable": 0,
          "won_output_rows": 4134
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 425,
            "1000_2000ms": 0,
            "100_200ms": 1136,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 842,
            "20_50ms": 443,
            "2_5ms": 0,
            "5000_10000ms": 1,
            "500_1000ms": 42,
            "50_100ms": 760,
            "5_10ms": 0,
            "ge30000ms": 485,
            "neg": 0
          },
          "max_ms": 149042,
          "mean_ms": 8544.574262215772,
          "measurable": 4134,
          "min_ms": 20,
          "p50_ms": 175.0,
          "p90_ms": 37141.40000000001,
          "p99_ms": 114705.62000000008,
          "rows": 4134,
          "unmeasurable": 0,
          "won_output_rows": 1152
        }
      }
    },
    "price_change": {
      "boundary_dropped": 910,
      "class": "PARTIAL",
      "exception_markets": 157405,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 89391026,
        "e": 87953078,
        "h": 89334710
      },
      "rows_c": 89391026,
      "rows_e": 87953078,
      "rows_h": 89334710,
      "rows_joined": 89415226,
      "rows_merged": 89414316,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 39990,
            "100_200ms": 1239100,
            "10_20ms": 6108956,
            "1_2ms": 0,
            "2000_5000ms": 6122,
            "200_500ms": 1719842,
            "20_50ms": 3026140,
            "2_5ms": 30136182,
            "5000_10000ms": 2166,
            "500_1000ms": 397144,
            "50_100ms": 1325810,
            "5_10ms": 45389574,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 6950,
          "mean_ms": 18.864114323959097,
          "measurable": 89391026,
          "min_ms": 2,
          "p50_ms": 5.0,
          "p90_ms": 15.0,
          "p99_ms": 358.0,
          "rows": 89391026,
          "unmeasurable": 0,
          "won_output_rows": 44822
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 885972,
            "1000_2000ms": 1502292,
            "100_200ms": 7731390,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 1574512,
            "200_500ms": 5859674,
            "20_50ms": 51131238,
            "2_5ms": 0,
            "5000_10000ms": 964962,
            "500_1000ms": 2753304,
            "50_100ms": 15513948,
            "5_10ms": 0,
            "ge30000ms": 35786,
            "neg": 0
          },
          "max_ms": 53114,
          "mean_ms": 426.068220648287,
          "measurable": 87953078,
          "min_ms": 36,
          "p50_ms": 48.0,
          "p90_ms": 410.0,
          "p99_ms": 10304.0,
          "rows": 87953078,
          "unmeasurable": 0,
          "won_output_rows": 87952170
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 16594,
            "1000_2000ms": 276114,
            "100_200ms": 2204502,
            "10_20ms": 50245560,
            "1_2ms": 0,
            "2000_5000ms": 172020,
            "200_500ms": 2346692,
            "20_50ms": 28575182,
            "2_5ms": 0,
            "5000_10000ms": 95122,
            "500_1000ms": 836626,
            "50_100ms": 4562744,
            "5_10ms": 0,
            "ge30000ms": 3554,
            "neg": 0
          },
          "max_ms": 58502,
          "mean_ms": 62.26141599385054,
          "measurable": 89334710,
          "min_ms": 15,
          "p50_ms": 19.0,
          "p90_ms": 60.0,
          "p99_ms": 721.0,
          "rows": 89334710,
          "unmeasurable": 0,
          "won_output_rows": 1417324
        }
      }
    },
    "tick_size_change": {
      "boundary_dropped": 0,
      "class": "PARTIAL",
      "exception_markets": 1839,
      "rows_b": 0,
      "rows_by_domain": {
        "b": 0,
        "c": 7356,
        "e": 7344,
        "h": 7352
      },
      "rows_c": 7356,
      "rows_e": 7344,
      "rows_h": 7352,
      "rows_joined": 7356,
      "rows_merged": 7356,
      "witness_latency": {
        "c": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 0,
            "100_200ms": 38,
            "10_20ms": 452,
            "1_2ms": 0,
            "2000_5000ms": 0,
            "200_500ms": 79,
            "20_50ms": 140,
            "2_5ms": 2759,
            "5000_10000ms": 0,
            "500_1000ms": 20,
            "50_100ms": 67,
            "5_10ms": 3801,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 762,
          "mean_ms": 12.223219140837411,
          "measurable": 7356,
          "min_ms": 3,
          "p50_ms": 5.0,
          "p90_ms": 10.0,
          "p99_ms": 233.0,
          "rows": 7356,
          "unmeasurable": 0
        },
        "e": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 16,
            "1000_2000ms": 16,
            "100_200ms": 1206,
            "10_20ms": 0,
            "1_2ms": 0,
            "2000_5000ms": 36,
            "200_500ms": 436,
            "20_50ms": 4224,
            "2_5ms": 0,
            "5000_10000ms": 24,
            "500_1000ms": 107,
            "50_100ms": 1279,
            "5_10ms": 0,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 21560,
          "mean_ms": 170.82325708061003,
          "measurable": 7344,
          "min_ms": 41,
          "p50_ms": 48.0,
          "p90_ms": 179.0,
          "p99_ms": 2633.0,
          "rows": 7344,
          "unmeasurable": 0,
          "won_output_rows": 7344
        },
        "h": {
          "buckets_ms": {
            "0_1ms": 0,
            "10000_30000ms": 0,
            "1000_2000ms": 8,
            "100_200ms": 103,
            "10_20ms": 4997,
            "1_2ms": 0,
            "2000_5000ms": 4,
            "200_500ms": 68,
            "20_50ms": 1938,
            "2_5ms": 0,
            "5000_10000ms": 4,
            "500_1000ms": 36,
            "50_100ms": 194,
            "5_10ms": 0,
            "ge30000ms": 0,
            "neg": 0
          },
          "max_ms": 6399,
          "mean_ms": 34.40451577801959,
          "measurable": 7352,
          "min_ms": 15,
          "p50_ms": 19.0,
          "p90_ms": 31.0,
          "p99_ms": 374.0,
          "rows": 7352,
          "unmeasurable": 0,
          "won_output_rows": 12
        }
      }
    }
  },
  "archive_root": "union-staging",
  "boundary_guard": "cache",
  "bytes": 1073094620,
  "file": "2026-09-01T19.parquet",
  "generated_by": "tools/orderbook_ab/merge_ab.py",
  "hour": "2026-09-01/19",
  "hour_utc": "2026-09-01T19:00:00+00:00",
  "layout": "union-event-sorted-v1",
  "max_sequence": 53198777877592915,
  "merger_git_sha": "4b62fc9b20e966fbf2a7877895dbf6e0f609dfb6",
  "min_sequence": 281487096490874,
  "products": {
    "best_bid_ask": {
      "byte_range": [
        4,
        94827354
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "best_bid",
        "best_ask",
        "spread",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198777877592901,
      "min_sequence": 281487096490916,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 7239298,
      "row_groups": [
        0,
        27
      ],
      "sha256": "bdc72666c332e080e23f6e4a497f566348d60324a8da7d4ab1d10547c5d862c3"
    },
    "book": {
      "byte_range": [
        94827354,
        175737673
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "bids",
        "asks",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198777877582194,
      "min_sequence": 281487096491182,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 966297,
      "row_groups": [
        28,
        31
      ],
      "sha256": "825dcc57afc3828a19e4d30dee484f42a5d1175e3333d0163908ddfa12816282"
    },
    "last_trade_price": {
      "byte_range": [
        175737673,
        179948048
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "price",
        "size",
        "side",
        "fee_rate_bps",
        "transaction_hash",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198777877586538,
      "min_sequence": 281487096498586,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 75487,
      "row_groups": [
        32,
        32
      ],
      "sha256": "96547e2b930cf628ad10e3844e6796011f188753a0d7d88d5b04cfd69fa51d62"
    },
    "market_resolved": {
      "byte_range": [
        179948048,
        180104526
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "id",
        "assets_ids",
        "winning_asset_id",
        "winning_outcome",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 12384899494409962,
      "min_sequence": 281487098396109,
      "order_by": [
        "market",
        "id",
        "timestamp",
        "sequence"
      ],
      "row_count": 987,
      "row_groups": [
        33,
        33
      ],
      "sha256": "b7c8edb9dab4fd00636c551f3771168a956a57cb63ed7558d05ce84bfca77b73"
    },
    "new_market": {
      "byte_range": [
        180104526,
        180745881
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "id",
        "assets_ids",
        "outcomes",
        "question",
        "slug",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198777877480651,
      "min_sequence": 281487096900935,
      "order_by": [
        "market",
        "id",
        "timestamp",
        "sequence"
      ],
      "row_count": 5875,
      "row_groups": [
        34,
        34
      ],
      "sha256": "89778f60ebd5514593ceb4be5b5008954564d069a8445f2aec5f22f654a7a34c"
    },
    "price_change": {
      "byte_range": [
        180745881,
        1071713175
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "price",
        "size",
        "side",
        "best_bid",
        "best_ask",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198777877592915,
      "min_sequence": 281487096490874,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 89414316,
      "row_groups": [
        35,
        376
      ],
      "sha256": "f0d7733020f11ecde9803919cc7d19ea1459ea5e99b70ae860408cc32bede849"
    },
    "tick_size_change": {
      "byte_range": [
        1071713175,
        1071981162
      ],
      "columns": [
        "timestamp_received",
        "sequence",
        "timestamp",
        "market",
        "asset_id",
        "old_tick_size",
        "new_tick_size",
        "witness_set",
        "arrival_skew",
        "source_witness"
      ],
      "max_sequence": 53198777870589991,
      "min_sequence": 281487098658019,
      "order_by": [
        "market",
        "asset_id",
        "timestamp",
        "sequence"
      ],
      "row_count": 7356,
      "row_groups": [
        377,
        377
      ],
      "sha256": "f80ed7b5e6b6ee270c7f2d4f802e6d8be5fa65f0f55c1957c23f6b0b4bb49ff1"
    }
  },
  "row_count": 97709616,
  "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: c, h, e)",
  "sha256": "5f55afa4bf519100385a587eacbd55d539c8413aff2c22668c66bef5a3061ceb",
  "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": "2026-09-01T19.witness_stats.json",
  "witnesses": "che",
  "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."
}