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"order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 107648410, "row_groups": [ 67, 477 ], "sha256": "66bfbb6a1961bb22f853b666a1672fc0bd93ab51835ddbf9e3b9ffba78774c36" }, "tick_size_change": { "byte_range": [ 1318676767, 1318945753 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "asset_id", "old_tick_size", "new_tick_size", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 264867953161767027, "min_sequence": 6473924859302482, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 7536, "row_groups": [ 478, 478 ], "sha256": "145fe213c7f3d6071c5eae3c42bb9dd4fbabe91bb48d08267e2ae3b28ac8ea78" } }, "row_count": 124364801, "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, g). The winner is per row, not per hour -- each row names its own in source_witness", "sha256": "90fc8ded589229e1c7bdc1a02d2e69d3a98ad8ebbb1fca1d6b825d08fc2fab93", "skipped_witnesses": { "f": { "alive": false, "listed_utc": "2026-09-20T06:42:52.598886Z", "newest_upload": "2026-09-20T00:20:12.465000Z", "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": "2026-09-20T04.witness_stats.json", "witnesses": "cheg", "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." }