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"generated_by": "tools/orderbook_ab/merge_ab.py", "hour": "2026-09-26/22", "hour_utc": "2026-09-26T22:00:00+00:00", "layout": "union-event-sorted-v1", "max_sequence": 367043369638548908, "merger_git_sha": "fcbb28046152741ae3754e951659977da4c8b36e", "min_sequence": 12103424104403424, "products": { "best_bid_ask": { "byte_range": [ 4, 167423404 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "asset_id", "best_bid", "best_ask", "spread", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 367043369638548908, "min_sequence": 12103424104403801, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 15052375, "row_groups": [ 0, 57 ], "sha256": "b08ca46c85a1d15f4484ecf24ddb23acce55dbfe6eb55dad94fffce6eda528fe" }, "book": { "byte_range": [ 167423404, 305012200 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "asset_id", "bids", "asks", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 367043369638531954, "min_sequence": 12103424104816801, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 5245290, "row_groups": [ 58, 78 ], "sha256": "2442ab5e4d311c652fb50164fad9a0b5fa5fa57ce48781a2379d61d7e29bb179" }, "last_trade_price": { "byte_range": [ 305012200, 307920536 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "asset_id", "price", "size", "side", "fee_rate_bps", "transaction_hash", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 367043369638533605, "min_sequence": 12103424105279948, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 49595, "row_groups": [ 79, 79 ], "sha256": "feb596634483258795f510834a3c0e3032cc9dde4acf2a10ea28dee663513d3b" }, "market_resolved": { "byte_range": [ 307920536, 310578953 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "id", "assets_ids", "winning_asset_id", "winning_outcome", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 367043369638358233, "min_sequence": 12103424105278462, "order_by": [ "market", "id", "timestamp", "sequence" ], "row_count": 100188, "row_groups": [ 80, 80 ], "sha256": "50cfe7c9c745221bea95793ca9c646a2b13a8c1334008015940e1b5a357c3df2" }, "new_market": { "byte_range": [ 310578953, 313014016 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "id", "assets_ids", "outcomes", "question", "slug", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 367043369636601596, "min_sequence": 12103424105269698, "order_by": [ "market", "id", "timestamp", "sequence" ], "row_count": 104271, "row_groups": [ 81, 81 ], "sha256": "b7f19c8c6c1348bb9ffa6a981e9f0503f42584abcd9f05d228f685e88d5d469a" }, "price_change": { "byte_range": [ 313014016, 1574945218 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "asset_id", "price", "size", "side", "best_bid", "best_ask", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 367043369638548907, "min_sequence": 12103424104403424, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 122585994, "row_groups": [ 82, 549 ], "sha256": "7dd48b9ec401f02044ea74f85c5f2e83a654496a87a09a178720c1347f95d7b2" }, "tick_size_change": { "byte_range": [ 1574945218, 1575264547 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "asset_id", "old_tick_size", "new_tick_size", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 367043369636031928, "min_sequence": 12103424109283620, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 8852, "row_groups": [ 550, 550 ], "sha256": "b8d0c84247b2ed854ee17fd3d1630d51e3ecf179bb6f9d754e4c5599cc605de6" } }, "row_count": 143146565, "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": "944deba39a1af3f1ee2adde3555543b880a6b201e60d4257a70e89c11ae11d1a", "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": "2026-09-26T22.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." }