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        "asset_id",
        "timestamp",
        "sequence",
        "row_ordinal"
      ],
      "provenance_columns": [
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        "sequence",
        "arrival_skew",
        "witness_set",
        "twin_seq_delta",
        "twin_recv_delta_ns",
        "twin_arrival_skew",
        "spread_differs",
        "spread_raw",
        "source_witness",
        "is_primary_copy"
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      "row_count": 3212,
      "source_rows": 3212
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  "publisher_versions": {
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    "pyarrow": "24.0.0",
    "python": "3.13.16",
    "tool_git_sha": "31c72fd414cd3451333b642e199bcd893e0d23da"
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  "rebuilt_from": "v3",
  "receive_time_precision": {
    "arrival_skew": "microseconds, floored to a whole millisecond",
    "timestamp_received": "millisecond, floored; not stored: timestamp + recv_lag_ms",
    "twin_recv_delta_ns": "nanoseconds, a whole number of milliseconds"
  },
  "recipe_sha256": "50cb90e76e12866a30110f5bd6164e712ac99f337620d983d441807fd22bf7c8",
  "recorders": null,
  "row_count": 80004330,
  "rule_version": "book-exact-repeat-v1+mirror-exact-v2",
  "sequence_note": "sequence and timestamp_received are collector-local provenance; where domains carry the same row, the merge keeps the PRIMARY witness's copy (p) when it heard the row, otherwise the EARLIEST-RECEIVED copy, equal arrivals breaking by registry order (active: i, o, p). Each row names its own in source_witness",
  "skipped_witnesses": {
    "q": {
      "reason": "not_in_merged_set"
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  },
  "source_sha256": "5d3bb5871634bbb2cdbff0014998fc76b249fd5062a0c94f72cbb549354e3a38",
  "source_witness": "provenance",
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    "best_bid_ask": {
      "spread_null": 0,
      "spread_raw": 0
    },
    "book": {
      "spread_null": 0,
      "spread_raw": 0
    },
    "last_trade_price": {
      "spread_null": 0,
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    },
    "market_resolved": {
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    "new_market": {
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    "price_change": {
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    },
    "tick_size_change": {
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      "spread_raw": 0
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  },
  "spread_rule": "spread = best_ask - best_bid on best_bid_ask rows, null on every other row; where provenance spread_differs is true, spread = spread_raw",
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      "oil": 3729,
      "south-korea": 2128,
      "trump-presidency": 4152,
      "uk": 170
    }
  },
  "tag_list_sha256": "1c81c469cb23514c29850913db7f4fa2fa1e21d8350c0381158cb6e908dd02b4",
  "thinning": "book-exact-repeat-v1",
  "twin_arrival_skew": "provenance",
  "twin_check": {
    "all_rows": 125824703,
    "columns": [
      "event_type",
      "timestamp_received",
      "sequence",
      "timestamp",
      "market",
      "asset_id",
      "best_bid",
      "best_ask",
      "spread",
      "bids",
      "asks",
      "price",
      "size",
      "side",
      "fee_rate_bps",
      "transaction_hash",
      "id",
      "assets_ids",
      "winning_asset_id",
      "winning_outcome",
      "outcomes",
      "question",
      "slug",
      "old_tick_size",
      "new_tick_size",
      "witness_set",
      "arrival_skew",
      "source_witness"
    ],
    "encoding": "twin-check-v1",
    "file": "2026-11-01T08.twin_check.parquet",
    "fingerprint": "sum mod 2^128 of sha256(row)[:16] read big-endian, lower-case hex",
    "group_by": [
      "category",
      "market",
      "event_type"
    ],
    "groups": 220731,
    "sets": {
      "all": [
        "all_rows",
        "all_fingerprint"
      ],
      "stored": [
        "stored_rows",
        "stored_fingerprint"
      ],
      "twin": [
        "twin_rows",
        "fingerprint"
      ]
    },
    "stored_rows": 80004330,
    "twin_rows": 45820373
  },
  "twin_recv_delta_ns": "provenance",
  "twin_seq_delta": "provenance",
  "uncategorised_row_share": 0.002327,
  "verification": {
    "note": "Covers each file listed in files[], each checked on its own; there is no whole-hour sha256 and no per-product byte range. This manifest and any file not listed in files[] need an external checksum (the archive's SHA256SUMS.txt, which does not list itself). A match shows the files agree with a manifest you trust, not that the manifest is authentic.",
    "primary": "sha256sum <file> == .files[].sha256 of the files[] entry whose file is <file>",
    "secondary": "byte size of <file> == .files[].size of the same entry (a supplementary check; the sha256 decides)"
  },
  "witness_stats": "2026-11-01T08.witness_stats.json",
  "witness_stats_sha256": "dff543f4e2cd2b57d297eb1196a6f1d56e4f01b24cece457d17eacb03a2cc0c0",
  "witnesses": "iop",
  "writer_versions": null
}
