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"1a6746059e7a57c31872529f8e4efd3326cad068ddeeaf23b0393e1315b70da3" }, "tick_size_change": { "byte_range": [ 1285088510, 1285235217 ], "columns": [ "timestamp_received", "sequence", "timestamp", "market", "asset_id", "old_tick_size", "new_tick_size", "witness_set", "arrival_skew", "source_witness" ], "max_sequence": 265149428152316816, "min_sequence": 6473924984688153, "order_by": [ "market", "asset_id", "timestamp", "sequence" ], "row_count": 4048, "row_groups": [ 477, 477 ], "sha256": "9162abc6158ad0e033375e2048af28c52d9fe0b5c665f3289d32045611fcf8e3" } }, "row_count": 123667988, "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": "ab9d500d1e48485c6682f5d4435b9bd088a958face4a2f476b61d8eb90577fb0", "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": "2026-09-20T05.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." }