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"best_ask", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 234750131291987733, "min_sequence": 4222130281221871, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 95480965, "row_groups": [ 41, 405 ], "sha256": "f30e545ed7013a369ee4faa2b627c4c5b04dd8827dcbb92e3d23b4fa8e3d2723" }, "tick_size_change": { "byte_range": [ 1074057512, 1074153903 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "asset_id", "old_tick_size", "new_tick_size", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 234750131291133992, "min_sequence": 54324684710957595, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 2636, "row_groups": [ 406, 406 ], "sha256": "779956a4c4c37c6bf3def72af9d49c77eb6209775f519fb347da8cbf8c2768a5" } }, "row_count": 105231701, "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, e, f, g). The winner is per row, not per hour -- each row names its own in source_witness", "sha256": "0ccae2cc78163fb23ddcf39bfd8fbc49c59b9c35401f252271793593de3c20ec", "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": "2026-09-18T08.witness_stats.json", "witnesses": "chefg", "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." }