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"witness_set", "arrival_skew", "source_witness" ], "max_sequence": 283445301563325381, "min_sequence": 8162774451315461, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 111145020, "row_groups": [ 65, 488 ], "sha256": "204d20178354d2357818dd20c5767968ec6e5b4c638601159bec73b24d263fd0" }, "tick_size_change": { "byte_range": [ 1456771925, 1457128656 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "asset_id", "old_tick_size", "new_tick_size", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 283445301560919649, "min_sequence": 8162774464450900, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 9820, "row_groups": [ 489, 489 ], "sha256": "a28f36727379e01c1b9a12124e540b203d7003c39b8389261eb827d55c7e9f6d" } }, "row_count": 127267181, "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). The winner is per row, not per hour -- each row names its own in source_witness", "sha256": "2b28f805a52ed049b79d3200cbc92157017eafaee1a39dd648cae3feb2c9ada3", "skipped_witnesses": { "g": { "alive": false, "listed_utc": "2026-09-21T02:42:56.468701Z", "newest_upload": "2026-09-20T20:20:39.551000Z", "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": "2026-09-20T20.witness_stats.json", "witnesses": "chef", "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." }