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"tools/orderbook_ab/merge_ab.py", "hour": "2026-09-26/23", "hour_utc": "2026-09-26T23:00:00+00:00", "layout": "union-event-sorted-v1", "max_sequence": 369295169445932417, "merger_git_sha": "fcbb28046152741ae3754e951659977da4c8b36e", "min_sequence": 12947849020785979, "products": { "best_bid_ask": { "byte_range": [ 4, 176276281 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "asset_id", "best_bid", "best_ask", "spread", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 369295169445932363, "min_sequence": 12947849020786481, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 15495729, "row_groups": [ 0, 59 ], "sha256": "3d508ba33c9c371dba68d7539327013c77873662335684b67f164fb2cc308839" }, "book": { "byte_range": [ 176276281, 293420873 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "asset_id", "bids", "asks", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 369295169445931078, "min_sequence": 12947849020816048, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 3695365, "row_groups": [ 60, 74 ], "sha256": "666a67afbe79bf3688bea58592208f5446614c3f6230a7ffc502553ade2fb06f" }, "last_trade_price": { "byte_range": [ 293420873, 296620414 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "asset_id", "price", "size", "side", "fee_rate_bps", "transaction_hash", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 369295169445931577, "min_sequence": 12947849020807863, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 56131, "row_groups": [ 75, 75 ], "sha256": "5a275fb4cc4d90a78f784c639399b0b9af82c50188966db3c90b46c606952868" }, "market_resolved": { "byte_range": [ 296620414, 299696114 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "id", "assets_ids", "winning_asset_id", "winning_outcome", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 369295169445752113, "min_sequence": 12947849021039533, "order_by": [ "market", "id", "timestamp", "sequence" ], "row_count": 50248, "row_groups": [ 76, 76 ], "sha256": "fb57057fe27ac46a5911af3834d6dca7e312ae3eccd5cb9ab959eb67697dbb41" }, "new_market": { "byte_range": [ 299696114, 302079587 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "id", "assets_ids", "outcomes", "question", "slug", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 369295169445219889, "min_sequence": 12947849021440737, "order_by": [ "market", "id", "timestamp", "sequence" ], "row_count": 45325, "row_groups": [ 77, 77 ], "sha256": "dbae0cb105f2b1e60b11382387bc50be1daa54f92caf2a21547b86bc5d23c607" }, "price_change": { "byte_range": [ 302079587, 1618148805 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "asset_id", "price", "size", "side", "best_bid", "best_ask", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 369295169445932417, "min_sequence": 12947849020785979, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 126397738, "row_groups": [ 78, 560 ], "sha256": "6ce1b7321e5db7f6b15eb52c0408dbee0194ad0d4d8da152e5c8da386cc47f5e" }, "tick_size_change": { "byte_range": [ 1618148805, 1618407271 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "asset_id", "old_tick_size", "new_tick_size", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 369295169445388963, "min_sequence": 12947849025979600, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 7072, "row_groups": [ 561, 561 ], "sha256": "379a52874a457948cf57230b6042030cdb1d7a025882344afdd601cf2f4cfd7e" } }, "row_count": 145747608, "sequence_note": "sequence and timestamp_received are collector-local provenance; where domains carry the same row, the merge keeps the EARLIEST-RECEIVED copy, equal arrivals breaking by registry order (active: c, h, i, k). The winner is per row, not per hour -- each row names its own in source_witness", "sha256": "7911668f49e368ff37d675a151af273af1bf09b3e7cd213e9bc0539976b328d5", "skipped_witnesses": { "g": { "alive": false, "listed_utc": "2026-09-27T02:23:04.450504Z", "newest_upload": "2026-09-25T15:20:05.378000Z", "reason": "not_staged" } }, "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 == .sha256", "secondary": "curl -r - | sha256sum == .products..sha256" }, "witness_stats": "2026-09-26T23.witness_stats.json", "witnesses": "chik", "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." }