{
  "capture": {
    "source_url": "https://www.veridionmarkets.com/evidence/disclosure-identity-evidence-2026-09-16.json",
    "measured_at": "2026-09-15T22:21:17.671Z",
    "started_at": "2026-09-15T22:21:04.351Z",
    "generation": 962,
    "snapshot_as_of": "2026-09-15T16:30:21.711042Z",
    "request": "GET /api/v1/disclosures?transaction_date_from=2026-05-18&limit=25, then page.next_cursor until page.has_more=false",
    "pages": 32,
    "rows": 781,
    "distinct_disclosure_ids": 781,
    "identity_basis": "government_filing_facts",
    "artifact": "congress-flow-gen962-responses.json.gz",
    "gzip_sha256": "d2b36a19320cd2c498b39e722d6d13607fc10b08e69bb9098f868f68cdbc5b7d",
    "decoded_sha256": "b31a924667471474456a929b3eb3916a164cff41800089ca99fcea22c92f0f0a",
    "withdrawn_key": {
      "fields": ["receipt.document_id", "member.member_id", "asset.ticker", "transaction.date", "transaction.type", "amount.amount_range"],
      "missing_amount_range_rows": 781,
      "groups": 708,
      "collision_groups": 33,
      "rows_collapsed": 73,
      "groups_differing_in_amount_bounds": 26,
      "asset_only": 18,
      "owner_only": 7,
      "both_asset_and_owner": 2,
      "neither_asset_nor_owner": 6
    },
    "amount_corrected_diagnostic": {
      "amount_fields": ["amount.range_low", "amount.range_high", "amount.currency"],
      "groups": 743,
      "collision_groups": 14,
      "rows_collapsed": 38,
      "groups_differing_in_asset": 10,
      "groups_differing_in_owner": 4
    },
    "limitations": "Captured API output only. Neither consumer grouping establishes duplicate transactions or authorizes reducing the 781-row population. The capture does not prove source completeness, warehouse admission or replay stability. Original bytes are retained in the audit archive; this file is a measurement summary, not the raw capture."
  },
  "duplicate_writer": {
    "source_url": "https://www.veridionmarkets.com/evidence/disclosure-identity-evidence-2026-09-16.json",
    "measured_at": "2026-09-16T01:01:03.132Z",
    "artifact": "A-run-2026-09-15T0037Z-rows-1080.tsv",
    "sha256": "c06cf7e921c696a4665ae4ddc6db10cdfe1a84919c463e6708f675dcf2eb25d3",
    "population": "Physical House PDF warehouse rows from the snapshot-congress run scheduled for 2026-09-15T00:30:00Z, not served API identities",
    "scheduled_at": "2026-09-15T00:30:00Z",
    "first_written_at": "2026-09-15T00:37:18.129536Z",
    "last_written_at": "2026-09-15T00:37:47.671435Z",
    "rows": 1080,
    "live_lined": 979,
    "closed_version": 62,
    "live_lineless_legacy_created_at": 39,
    "selection": "source='pdf' and parse_run_id is null and source_line_number is null and first_observation_basis='initial_ingest' and created_at between '2026-09-15T00:37:18.129536Z' and '2026-09-15T00:37:47.671435Z'",
    "method": "Read-only repeatable-read export. Verify the artifact hash, count its data rows, and group by match_kind. The measurement compares rebuilt physical rows to prior rows, including closed versions; it is not a count of extra API transactions.",
    "repair_status": "not_verified_at_measurement",
    "api_impact": "unestablished",
    "limitations": "No current count, deployed repair, API duplicate count or source-document duplicate verdict for the separate pre-existing file-B population is asserted. Serving-side reconciliation and post-correction measurement remain separate work."
  }
}