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        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
        }
      }
    },
    {
      "id": "fab-faketitle-10-1016-j-jallcom-2016-08-300",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
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      "match": {
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      "elapsed_ms": 3717,
      "attempts": 1,
      "provenance": {
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        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 10
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          {
            "registry": "pubmed",
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            "registry": "openalex",
            "ok": true,
            "count": 5
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        ],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
        }
      }
    },
    {
      "id": "fab-faketitle-10-1177-0032258x231184778",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
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      "match": {
        "ok": true
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      "elapsed_ms": 3743,
      "attempts": 1,
      "provenance": {
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        "resolved_via": "crossref",
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 10
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          {
            "registry": "pubmed",
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            "count": 0
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          {
            "registry": "openalex",
            "ok": true,
            "count": 8
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        ],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
        }
      }
    },
    {
      "id": "fab-faketitle-10-1016-j-memsci-2018-10-011",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
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      "match": {
        "ok": true
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      "elapsed_ms": 5196,
      "attempts": 1,
      "provenance": {
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        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 10
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        ],
        "llm_screen": {
          "applied": true,
          "model": "anthropic/claude-haiku-4.5",
          "prompt_version": "2026-05-12",
          "verdict": "different_paper",
          "reasoning": "The claimed title concerns paleoclimate reconstruction using speleothem oxygen isotopes in the East Asian monsoon region - a topic in paleoclimatology, geology, and isotope geochemistry. The resolved title concerns the preparation of water-based anion-exchange membranes from PVA (polyvinyl alcohol) for anti-fouling in electrodialysis - a topic in materials science and membrane technology. These are entirely different research domains with no substantive overlap. While both papers share a first author named Liu, the topics are completely unrelated. This is a clear case of a fabricated or misattributed citation where the claimed paper does not match the actual paper at the given identifier.",
          "cost_usd": 0.0010576000000000001
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    },
    {
      "id": "fab-faketitle-10-1016-j-ijcard-2018-10-026",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
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      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
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      "elapsed_ms": 2400,
      "attempts": 1,
      "provenance": {
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          {
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        "llm_screen": {
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          "reason": "verdict_not_eligible"
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    },
    {
      "id": "fab-faketitle-10-1016-j-engstruct-2021-112096",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
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      "expected": {
        "verdict": "mismatch",
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      "elapsed_ms": 3868,
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      "provenance": {
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        "registries_searched": [
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        "llm_screen": {
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      }
    },
    {
      "id": "fab-faketitle-10-2528-pierc15021207",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
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      "expected": {
        "verdict": "mismatch",
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      "elapsed_ms": 3438,
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      "provenance": {
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        "llm_screen": {
          "applied": false,
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      }
    },
    {
      "id": "fab-faketitle-10-30516-bilgesci-652473",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
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      "match": {
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      "elapsed_ms": 3348,
      "attempts": 1,
      "provenance": {
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        "registries_searched": [
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        ],
        "llm_screen": {
          "applied": false,
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    },
    {
      "id": "fab-faketitle-10-1111-are-13302",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
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      "expected": {
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      "elapsed_ms": 5103,
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    },
    {
      "id": "fab-faketitle-10-1016-j-genrep-2022-101637",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
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      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
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      "elapsed_ms": 2138,
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        ],
        "llm_screen": {
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    },
    {
      "id": "fab-faketitle-10-1016-j-rpor-2016-07-001",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
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      "expected": {
        "verdict": "mismatch",
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      "elapsed_ms": 2385,
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      "provenance": {
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        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
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    },
    {
      "id": "fab-faketitle-10-1590-0104-6632-20190361s20170495",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
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      "match": {
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      "elapsed_ms": 2974,
      "attempts": 1,
      "provenance": {
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        "llm_screen": {
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    },
    {
      "id": "fab-faketitle-10-17073-0021-3438-2021-2-4-13",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
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      "elapsed_ms": 3694,
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        "llm_screen": {
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    },
    {
      "id": "fab-faketitle-10-1016-j-ophtha-2021-10-010",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
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      "expected": {
        "verdict": "mismatch",
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      "elapsed_ms": 3370,
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      "provenance": {
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        ],
        "llm_screen": {
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    },
    {
      "id": "fab-faketitle-10-26117-2079-6641-2023-44-3-121-129",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
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      "elapsed_ms": 3349,
      "attempts": 1,
      "provenance": {
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        "caveats": ["title is non-Latin script; character-level similarity is weaker here"],
        "registries_searched": [
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        ],
        "llm_screen": {
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    },
    {
      "id": "fab-faketitle-10-12737-article-5c73fc224c5338-00189018",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
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      "elapsed_ms": 1803,
      "attempts": 1,
      "provenance": {
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        ],
        "llm_screen": {
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          "reason": "verdict_not_eligible"
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      }
    },
    {
      "id": "fab-faketitle-10-1007-s10750-018-3642-8",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
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      "match": {
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      "elapsed_ms": 4366,
      "attempts": 1,
      "provenance": {
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        ],
        "llm_screen": {
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          "reason": "verdict_not_eligible"
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      }
    },
    {
      "id": "fab-faketitle-10-1177-0891242415619008",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
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      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
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      "match": {
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      "elapsed_ms": 6787,
      "attempts": 1,
      "provenance": {
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        "registries_searched": [
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        ],
        "llm_screen": {
          "applied": true,
          "model": "anthropic/claude-haiku-4.5",
          "prompt_version": "2026-05-12",
          "verdict": "different_paper",
          "reasoning": "The claimed title and resolved title are about completely different topics. The claimed title is about mechanistic interpretability of attention heads in large language models, which is a machine learning/AI research topic. The resolved title is about the association between professional performing arts and knowledge class growth, which is a social sciences/education research topic. Despite both papers having a first author named Nelson, the subjects are entirely distinct and unrelated. This appears to be a fabricated citation where the claimed paper does not actually exist at the given identifier.",
          "cost_usd": 0.0008704
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      }
    },
    {
      "id": "fab-faketitle-10-1016-j-cell-2021-08-028",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
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      "expected": {
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        "confidence_in": ["high", "medium", "low"]
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      "elapsed_ms": 2390,
      "attempts": 1,
      "provenance": {
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        ],
        "llm_screen": {
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    },
    {
      "id": "fab-faketitle-10-1016-j-jchromb-2021-123056",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
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      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
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      "elapsed_ms": 3296,
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      "provenance": {
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            "count": 10
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            "count": 10
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        ],
        "llm_screen": {
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          "reason": "verdict_not_eligible"
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      }
    },
    {
      "id": "fab-faketitle-10-1111-jon-12291",
      "arm": "fabrication",
      "attack_type": "real-doi-fake-title",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
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      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
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      "match": {
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      "elapsed_ms": 3108,
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      "provenance": {
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      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
      },
      "match": {
        "ok": true
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      "elapsed_ms": 2142,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search"],
        "resolved_via": "crossref",
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 2
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          {
            "registry": "pubmed",
            "ok": true,
            "count": 0
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            "registry": "openalex",
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        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
        }
      }
    },
    {
      "id": "fab-wrongauthor-10-1016-j-jmmm-2018-07-088",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-authors",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
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      "match": {
        "ok": true
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      "elapsed_ms": 1543,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search"],
        "resolved_via": "crossref",
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 0
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          {
            "registry": "pubmed",
            "ok": true,
            "count": 0
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            "registry": "openalex",
            "ok": true,
            "count": 0
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        ],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
        }
      }
    },
    {
      "id": "fab-wrongauthor-10-59057-iberoleon-20075316-20203473",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-authors",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
      },
      "match": {
        "ok": true
      },
      "elapsed_ms": 1640,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search"],
        "resolved_via": "crossref",
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 0
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          {
            "registry": "pubmed",
            "ok": true,
            "count": 0
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          {
            "registry": "openalex",
            "ok": true,
            "count": 0
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        ],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
        }
      }
    },
    {
      "id": "fab-wrongauthor-10-1007-s11427-017-9139-7",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-authors",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
      },
      "match": {
        "ok": true
      },
      "elapsed_ms": 1708,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search"],
        "resolved_via": "crossref",
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 0
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          {
            "registry": "pubmed",
            "ok": true,
            "count": 0
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          {
            "registry": "openalex",
            "ok": true,
            "count": 0
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        ],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
        }
      }
    },
    {
      "id": "fab-wrongauthor-10-1016-j-phycom-2021-101413",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-authors",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
      },
      "match": {
        "ok": true
      },
      "elapsed_ms": 2201,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search"],
        "resolved_via": "crossref",
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 0
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          {
            "registry": "pubmed",
            "ok": true,
            "count": 0
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          {
            "registry": "openalex",
            "ok": true,
            "count": 0
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        ],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
        }
      }
    },
    {
      "id": "fab-wrongauthor-10-1007-s00106-019-0643-5",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-authors",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
      },
      "match": {
        "ok": true
      },
      "elapsed_ms": 1430,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search"],
        "resolved_via": "crossref",
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 10
          },
          {
            "registry": "pubmed",
            "ok": true,
            "count": 0
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          {
            "registry": "openalex",
            "ok": true,
            "count": 0
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        ],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
        }
      }
    },
    {
      "id": "fab-wrongauthor-10-3390-jcm11092665",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-authors",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
      },
      "match": {
        "ok": true
      },
      "elapsed_ms": 4523,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search"],
        "resolved_via": "crossref",
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 10
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          {
            "registry": "pubmed",
            "ok": true,
            "count": 0
          },
          {
            "registry": "openalex",
            "ok": true,
            "count": 0
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        ],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
        }
      }
    },
    {
      "id": "fab-wrongauthor-10-1103-physrevd-98-064004",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-authors",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
      },
      "match": {
        "ok": true
      },
      "elapsed_ms": 1458,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search"],
        "resolved_via": "crossref",
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 10
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          {
            "registry": "pubmed",
            "ok": true,
            "count": 0
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          {
            "registry": "openalex",
            "ok": true,
            "count": 2
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        ],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
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      }
    },
    {
      "id": "fab-wrongauthor-10-3390-molecules28041814",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-authors",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
      },
      "match": {
        "ok": true
      },
      "elapsed_ms": 3227,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search"],
        "resolved_via": "crossref",
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 10
          },
          {
            "registry": "pubmed",
            "ok": true,
            "count": 0
          },
          {
            "registry": "openalex",
            "ok": true,
            "count": 0
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        ],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
        }
      }
    },
    {
      "id": "fab-wrongauthor-10-1080-01904167-2018-1454958",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-authors",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
      },
      "match": {
        "ok": true
      },
      "elapsed_ms": 2697,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search"],
        "resolved_via": "crossref",
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 10
          },
          {
            "registry": "pubmed",
            "ok": true,
            "count": 0
          },
          {
            "registry": "openalex",
            "ok": true,
            "count": 0
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        ],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
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      }
    },
    {
      "id": "fab-wrongauthor-10-1075-lab-22081-osh",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-authors",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
      },
      "match": {
        "ok": true
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      "elapsed_ms": 2722,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search"],
        "resolved_via": "crossref",
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 10
          },
          {
            "registry": "pubmed",
            "ok": true,
            "count": 0
          },
          {
            "registry": "openalex",
            "ok": true,
            "count": 1
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        ],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
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      }
    },
    {
      "id": "fab-wrongauthor-10-1038-s41563-020-0759-8",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-authors",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
      },
      "match": {
        "ok": true
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      "elapsed_ms": 3322,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search"],
        "resolved_via": "crossref",
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 10
          },
          {
            "registry": "pubmed",
            "ok": true,
            "count": 0
          },
          {
            "registry": "openalex",
            "ok": true,
            "count": 1
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        ],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
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      }
    },
    {
      "id": "fab-wrongauthor-10-3389-fimmu-2022-1045731",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-authors",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "high",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "mismatch",
        "confidence_in": ["high", "medium", "low"]
      },
      "match": {
        "ok": true
      },
      "elapsed_ms": 1827,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search"],
        "resolved_via": "crossref",
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 10
          },
          {
            "registry": "pubmed",
            "ok": true,
            "count": 0
          },
          {
            "registry": "openalex",
            "ok": true,
            "count": 0
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        ],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
        }
      }
    },
    {
      "id": "fab-wrongyear-10-1208-s12248-019-0343-9",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-year",
      "http_status": 200,
      "verdict": "matched",
      "confidence": "low",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "matched",
        "confidence_in": ["medium", "low"]
      },
      "match": {
        "ok": true
      },
      "elapsed_ms": 5056,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search", "llm_screen"],
        "resolved_via": "crossref",
        "caveats": ["verdict reflects a publication-year gap"],
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 4
          },
          {
            "registry": "pubmed",
            "ok": true,
            "count": 1
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          {
            "registry": "openalex",
            "ok": true,
            "count": 3
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        ],
        "llm_screen": {
          "applied": true,
          "model": "anthropic/claude-haiku-4.5",
          "prompt_version": "2026-05-12",
          "verdict": "informal_abbreviation",
          "reasoning": "The claimed title and resolved title are identical: 'A Bounded Integer Model for Rating and Composite Scale Data'. The first author is also the same: Wellhagen. This is a perfect match, not an abbreviation or paraphrase, but rather the exact same citation. Since the titles are completely identical and the authors match, this clearly refers to the same paper. The verdict of 'informal_abbreviation' is the most appropriate category here, as it encompasses cases where the claimed citation matches the resolved paper (including exact matches), as opposed to 'different_paper' which would indicate fabrication or a mismatch.",
          "cost_usd": 0.000984
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      }
    },
    {
      "id": "fab-wrongyear-10-1371-journal-pgen-1006628",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-year",
      "http_status": 200,
      "verdict": "matched",
      "confidence": "low",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "matched",
        "confidence_in": ["medium", "low"]
      },
      "match": {
        "ok": true
      },
      "elapsed_ms": 6176,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search", "llm_screen"],
        "resolved_via": "crossref",
        "caveats": ["verdict reflects a publication-year gap"],
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 10
          },
          {
            "registry": "pubmed",
            "ok": true,
            "count": 1
          },
          {
            "registry": "openalex",
            "ok": true,
            "count": 1
          }
        ],
        "llm_screen": {
          "applied": true,
          "model": "anthropic/claude-haiku-4.5",
          "prompt_version": "2026-05-12",
          "verdict": "informal_abbreviation",
          "reasoning": "The claimed title and resolved title are identical, and the first authors match (Berglund). This is a perfect match of the paper, not even a paraphrase or abbreviation. The citation accurately reflects the actual published paper. This represents a correct citation of the same paper.",
          "cost_usd": 0.0007072000000000001
        }
      }
    },
    {
      "id": "fab-wrongyear-10-1155-2018-9026071",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-year",
      "http_status": 200,
      "verdict": "mismatch",
      "confidence": "low",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "matched",
        "confidence_in": ["medium", "low"]
      },
      "match": {
        "ok": false,
        "reason": "verdict=mismatch, expected=matched"
      },
      "elapsed_ms": 6589,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search", "llm_screen"],
        "resolved_via": "crossref",
        "caveats": ["verdict reflects a publication-year gap"],
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 10
          },
          {
            "registry": "pubmed",
            "ok": true,
            "count": 0
          },
          {
            "registry": "openalex",
            "ok": true,
            "count": 10
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        ],
        "llm_screen": {
          "applied": true,
          "model": "anthropic/claude-haiku-4.5",
          "prompt_version": "2026-05-12",
          "verdict": "uncertain",
          "reasoning": "The claimed title and resolved title are identical, including the first author (Li). However, without access to additional metadata such as publication year, venue, co-authors, or a DOI/URL, I cannot definitively confirm that the claimed citation refers to the exact same paper instance rather than a different paper that happens to have the identical title and first author. The match in title and first author is very strong evidence they refer to the same paper, but the lack of disambiguating information prevents a fully confident verdict. This could plausibly be either the same paper (which would normally warrant 'informal_abbreviation' verdict, but the titles aren't abbreviated—they're identical) or potentially a case where multiple papers share the identical title. The identical nature of the titles actually makes 'informal_abbreviation' inappropriate since there is no paraphrasing or abbreviation present. Without further distinguishing information, certainty cannot be achieved.",
          "cost_usd": 0.0012304
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      }
    },
    {
      "id": "fab-wrongyear-10-1029-2022jc018981",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-year",
      "http_status": 200,
      "verdict": "matched",
      "confidence": "medium",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "matched",
        "confidence_in": ["medium", "low"]
      },
      "match": {
        "ok": true
      },
      "elapsed_ms": 791,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare"],
        "resolved_via": "crossref",
        "caveats": ["verdict reflects a publication-year gap"],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
        }
      }
    },
    {
      "id": "fab-wrongyear-10-2208-jscejhe-72-i-289",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-year",
      "http_status": 200,
      "verdict": "matched",
      "confidence": "low",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "matched",
        "confidence_in": ["medium", "low"]
      },
      "match": {
        "ok": true
      },
      "elapsed_ms": 6033,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search", "llm_screen"],
        "resolved_via": "crossref",
        "caveats": ["verdict reflects a publication-year gap"],
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 10
          },
          {
            "registry": "pubmed",
            "ok": true,
            "count": 0
          },
          {
            "registry": "openalex",
            "ok": true,
            "count": 1
          }
        ],
        "llm_screen": {
          "applied": true,
          "model": "anthropic/claude-haiku-4.5",
          "prompt_version": "2026-05-12",
          "verdict": "informal_abbreviation",
          "reasoning": "The claimed title and resolved title are identical in all substantive respects. Both have the same first author (YANO) and address the exact same specific topic: assessing woody debris disaster risk at bridges along the Kagetsu River using a generation potential concept. The titles match word-for-word, indicating this is the same paper. There is no abbreviation or paraphrasing evident here - it appears to be a direct match rather than an informal variant, but since the verdict options provided are 'informal_abbreviation', 'different_paper', or 'uncertain', and this clearly refers to the same paper with identical title and author, the most appropriate classification is 'informal_abbreviation' (understanding that this encompasses exact matches as well, as they all refer to the same underlying paper).",
          "cost_usd": 0.0011632
        }
      }
    },
    {
      "id": "fab-wrongyear-10-3390-ma15041423",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-year",
      "http_status": 200,
      "verdict": "matched",
      "confidence": "medium",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "matched",
        "confidence_in": ["medium", "low"]
      },
      "match": {
        "ok": true
      },
      "elapsed_ms": 858,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare"],
        "resolved_via": "crossref",
        "caveats": ["verdict reflects a publication-year gap"],
        "llm_screen": {
          "applied": false,
          "reason": "verdict_not_eligible"
        }
      }
    },
    {
      "id": "fab-wrongyear-10-1080-25726641-2023-2222909",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-year",
      "http_status": 200,
      "verdict": "matched",
      "confidence": "low",
      "error_code": null,
      "error_message": null,
      "expected": {
        "verdict": "matched",
        "confidence_in": ["medium", "low"]
      },
      "match": {
        "ok": true
      },
      "elapsed_ms": 4821,
      "attempts": 1,
      "provenance": {
        "stages_run": ["compare", "search", "llm_screen"],
        "resolved_via": "crossref",
        "caveats": ["verdict reflects a publication-year gap"],
        "registries_searched": [
          {
            "registry": "crossref",
            "ok": true,
            "count": 10
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          {
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        ],
        "llm_screen": {
          "applied": true,
          "model": "anthropic/claude-haiku-4.5",
          "prompt_version": "2026-05-12",
          "verdict": "informal_abbreviation",
          "reasoning": "The claimed title and resolved title are identical, and the first authors match. This is a perfect match, not a paraphrase or abbreviation, but rather an exact citation. The verdict of 'informal_abbreviation' is the closest available category for this exact match, as it encompasses cases where the citation refers to the same paper. The paper clearly exists at the identified source, and there is no fabrication or reference to a different topic.",
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    },
    {
      "id": "fab-wrongyear-10-1016-j-ejor-2017-01-023",
      "arm": "fabrication",
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        "confidence_in": ["medium", "low"]
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    {
      "id": "fab-wrongyear-10-3390-su10010131",
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    },
    {
      "id": "fab-wrongyear-10-1080-17405629-2016-1265501",
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    {
      "id": "fab-wrongyear-10-1016-j-ejphar-2020-173327",
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    {
      "id": "fab-wrongyear-10-1103-physrevc-98-064908",
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    },
    {
      "id": "fab-wrongyear-10-1080-00377317-2020-1715750",
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      }
    },
    {
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        ],
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    },
    {
      "id": "fab-wrongyear-10-1097-mib-0000000000001236",
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        "registries_searched": [
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        ],
        "llm_screen": {
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      }
    },
    {
      "id": "fab-wrongyear-10-1109-tlt-2021-3073559",
      "arm": "fabrication",
      "attack_type": "real-doi-wrong-year",
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    },
    {
      "id": "fab-wrongyear-10-2139-ssrn-4642157",
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    },
    {
      "id": "fab-wrongyear-10-1016-j-jmrt-2023-02-217",
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    },
    {
      "id": "fab-wrongyear-10-13109-hisp-2016-129-1-154",
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        ],
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    },
    {
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    {
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        ],
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      }
    },
    {
      "id": "fab-wrongyear-10-1016-j-jtice-2017-08-031",
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    },
    {
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        ],
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    },
    {
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    },
    {
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    },
    {
      "id": "fab-wrongyear-10-1557-adv-2016-539",
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    {
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