{
  "version": "v0-step2024-date-verify",
  "step": 2024,
  "fetched_at": "2026-09-13T15:44:21.742Z",
  "total_persons": 50,
  "qids_with_dates": 50,
  "summary": {
    "born": {
      "exact": 42,
      "circa": 2,
      "mismatch": 6,
      "unavailable": 0
    },
    "died": {
      "exact": 31,
      "circa": 4,
      "mismatch": 2,
      "unavailable": 13
    }
  },
  "tolerance": {
    "circa_marked": "±5 years",
    "not_circa_marked": "±2 years (rounding)",
    "exact": "exact year match"
  },
  "api_source": "https://www.wikidata.org/w/api.php?action=wbgetentities&props=claims (P569 dateOfBirth + P570 dateOfDeath)",
  "discipline_note": "Wikidata dates = tertiary reference. Provenance level 変更 なし (schema §4 secondary/primary needs textbook/DOI). Verification metadata added as verify_status only.",
  "entries": {
    "person:thales-of-miletus": {
      "person_id": "person:thales-of-miletus",
      "qid": "Q36303",
      "seed_born": -624,
      "seed_died": -546,
      "seed_born_circa": true,
      "seed_died_circa": true,
      "wd_born": -625,
      "wd_died": -545,
      "born_match": "circa",
      "died_match": "circa",
      "discrepancy_notes": []
    },
    "person:pythagoras": {
      "person_id": "person:pythagoras",
      "qid": "Q10261",
      "seed_born": -570,
      "seed_died": -495,
      "seed_born_circa": true,
      "seed_died_circa": true,
      "wd_born": -582,
      "wd_died": -490,
      "born_match": "mismatch",
      "died_match": "circa",
      "discrepancy_notes": [
        "born: seed=-570(c.) vs WD=-582 (Δ12)"
      ]
    },
    "person:euclid": {
      "person_id": "person:euclid",
      "qid": "Q8747",
      "seed_born": -300,
      "seed_died": -260,
      "seed_born_circa": true,
      "seed_died_circa": true,
      "wd_born": -333,
      "wd_died": -285,
      "born_match": "mismatch",
      "died_match": "mismatch",
      "discrepancy_notes": [
        "born: seed=-300(c.) vs WD=-333 (Δ33)",
        "died: seed=-260(c.) vs WD=-285 (Δ25)"
      ]
    },
    "person:archimedes": {
      "person_id": "person:archimedes",
      "qid": "Q8739",
      "seed_born": -287,
      "seed_died": -212,
      "seed_born_circa": true,
      "seed_died_circa": false,
      "wd_born": -287,
      "wd_died": -212,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:apollonius-of-perga": {
      "person_id": "person:apollonius-of-perga",
      "qid": "Q180109",
      "seed_born": -240,
      "seed_died": -190,
      "seed_born_circa": true,
      "seed_died_circa": true,
      "wd_born": -262,
      "wd_died": -190,
      "born_match": "mismatch",
      "died_match": "exact",
      "discrepancy_notes": [
        "born: seed=-240(c.) vs WD=-262 (Δ22)"
      ]
    },
    "person:eratosthenes": {
      "person_id": "person:eratosthenes",
      "qid": "Q43182",
      "seed_born": -276,
      "seed_died": -194,
      "seed_born_circa": true,
      "seed_died_circa": true,
      "wd_born": -276,
      "wd_died": -194,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:hipparchus": {
      "person_id": "person:hipparchus",
      "qid": "Q159905",
      "seed_born": -190,
      "seed_died": -120,
      "seed_born_circa": true,
      "seed_died_circa": true,
      "wd_born": -190,
      "wd_died": -120,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:diophantus-of-alexandria": {
      "person_id": "person:diophantus-of-alexandria",
      "qid": "Q178217",
      "seed_born": 201,
      "seed_died": 285,
      "seed_born_circa": true,
      "seed_died_circa": true,
      "wd_born": 200,
      "wd_died": 284,
      "born_match": "circa",
      "died_match": "circa",
      "discrepancy_notes": []
    },
    "person:hypatia-of-alexandria": {
      "person_id": "person:hypatia-of-alexandria",
      "qid": "Q11903",
      "seed_born": 350,
      "seed_died": 415,
      "seed_born_circa": true,
      "seed_died_circa": false,
      "wd_born": 360,
      "wd_died": 415,
      "born_match": "mismatch",
      "died_match": "exact",
      "discrepancy_notes": [
        "born: seed=350(c.) vs WD=360 (Δ10)"
      ]
    },
    "person:leonardo-fibonacci": {
      "person_id": "person:leonardo-fibonacci",
      "qid": "Q8763",
      "seed_born": 1170,
      "seed_died": 1250,
      "seed_born_circa": true,
      "seed_died_circa": true,
      "wd_born": 1170,
      "wd_died": 1240,
      "born_match": "exact",
      "died_match": "mismatch",
      "discrepancy_notes": [
        "died: seed=1250(c.) vs WD=1240 (Δ10)"
      ]
    },
    "person:gerolamo-cardano": {
      "person_id": "person:gerolamo-cardano",
      "qid": "Q184530",
      "seed_born": 1501,
      "seed_died": 1576,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1501,
      "wd_died": 1576,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:john-napier": {
      "person_id": "person:john-napier",
      "qid": "Q159592",
      "seed_born": 1550,
      "seed_died": 1617,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1550,
      "wd_died": 1617,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:rene-descartes": {
      "person_id": "person:rene-descartes",
      "qid": "Q9191",
      "seed_born": 1596,
      "seed_died": 1650,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1596,
      "wd_died": 1650,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:pierre-de-fermat": {
      "person_id": "person:pierre-de-fermat",
      "qid": "Q75655",
      "seed_born": 1607,
      "seed_died": 1665,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1601,
      "wd_died": 1665,
      "born_match": "mismatch",
      "died_match": "exact",
      "discrepancy_notes": [
        "born: seed=1607 vs WD=1601 (Δ6)"
      ]
    },
    "person:isaac-newton": {
      "person_id": "person:isaac-newton",
      "qid": "Q935",
      "seed_born": 1642,
      "seed_died": 1727,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1642,
      "wd_died": 1727,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:gottfried-wilhelm-leibniz": {
      "person_id": "person:gottfried-wilhelm-leibniz",
      "qid": "Q9047",
      "seed_born": 1646,
      "seed_died": 1716,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1646,
      "wd_died": 1716,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:leonhard-euler": {
      "person_id": "person:leonhard-euler",
      "qid": "Q7604",
      "seed_born": 1707,
      "seed_died": 1783,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1707,
      "wd_died": 1783,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:joseph-louis-lagrange": {
      "person_id": "person:joseph-louis-lagrange",
      "qid": "Q80222",
      "seed_born": 1736,
      "seed_died": 1813,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1736,
      "wd_died": 1813,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:carl-friedrich-gauss": {
      "person_id": "person:carl-friedrich-gauss",
      "qid": "Q6722",
      "seed_born": 1777,
      "seed_died": 1855,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1777,
      "wd_died": 1855,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:augustin-louis-cauchy": {
      "person_id": "person:augustin-louis-cauchy",
      "qid": "Q8814",
      "seed_born": 1789,
      "seed_died": 1857,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1789,
      "wd_died": 1857,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:lars-ahlfors": {
      "person_id": "person:lars-ahlfors",
      "qid": "Q211642",
      "seed_born": 1907,
      "seed_died": 1996,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1907,
      "wd_died": 1996,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:jesse-douglas": {
      "person_id": "person:jesse-douglas",
      "qid": "Q315404",
      "seed_born": 1897,
      "seed_died": 1965,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1897,
      "wd_died": 1965,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:atle-selberg": {
      "person_id": "person:atle-selberg",
      "qid": "Q211041",
      "seed_born": 1917,
      "seed_died": 2007,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1917,
      "wd_died": 2007,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:laurent-schwartz": {
      "person_id": "person:laurent-schwartz",
      "qid": "Q212081",
      "seed_born": 1915,
      "seed_died": 2002,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1915,
      "wd_died": 2002,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:kunihiko-kodaira": {
      "person_id": "person:kunihiko-kodaira",
      "qid": "Q333918",
      "seed_born": 1915,
      "seed_died": 1997,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1915,
      "wd_died": 1997,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:jean-pierre-serre": {
      "person_id": "person:jean-pierre-serre",
      "qid": "Q212063",
      "seed_born": 1926,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1926,
      "wd_died": null,
      "born_match": "exact",
      "died_match": "unavailable",
      "discrepancy_notes": []
    },
    "person:rene-thom": {
      "person_id": "person:rene-thom",
      "qid": "Q164428",
      "seed_born": 1923,
      "seed_died": 2002,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1923,
      "wd_died": 2002,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:john-milnor": {
      "person_id": "person:john-milnor",
      "qid": "Q215765",
      "seed_born": 1931,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1931,
      "wd_died": null,
      "born_match": "exact",
      "died_match": "unavailable",
      "discrepancy_notes": []
    },
    "person:stephen-smale": {
      "person_id": "person:stephen-smale",
      "qid": "Q315394",
      "seed_born": 1930,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1930,
      "wd_died": null,
      "born_match": "exact",
      "died_match": "unavailable",
      "discrepancy_notes": []
    },
    "person:heisuke-hironaka": {
      "person_id": "person:heisuke-hironaka",
      "qid": "Q183373",
      "seed_born": 1931,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1931,
      "wd_died": 2026,
      "born_match": "exact",
      "died_match": "unavailable",
      "discrepancy_notes": []
    },
    "person:pierre-deligne": {
      "person_id": "person:pierre-deligne",
      "qid": "Q334045",
      "seed_born": 1944,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1944,
      "wd_died": null,
      "born_match": "exact",
      "died_match": "unavailable",
      "discrepancy_notes": []
    },
    "person:gerd-faltings": {
      "person_id": "person:gerd-faltings",
      "qid": "Q77137",
      "seed_born": 1954,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1954,
      "wd_died": null,
      "born_match": "exact",
      "died_match": "unavailable",
      "discrepancy_notes": []
    },
    "person:shigefumi-mori": {
      "person_id": "person:shigefumi-mori",
      "qid": "Q206215",
      "seed_born": 1951,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1951,
      "wd_died": null,
      "born_match": "exact",
      "died_match": "unavailable",
      "discrepancy_notes": []
    },
    "person:maxim-kontsevich": {
      "person_id": "person:maxim-kontsevich",
      "qid": "Q369588",
      "seed_born": 1964,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1964,
      "wd_died": null,
      "born_match": "exact",
      "died_match": "unavailable",
      "discrepancy_notes": []
    },
    "person:grigori-perelman": {
      "person_id": "person:grigori-perelman",
      "qid": "Q117346",
      "seed_born": 1966,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1966,
      "wd_died": null,
      "born_match": "exact",
      "died_match": "unavailable",
      "discrepancy_notes": []
    },
    "person:terence-tao": {
      "person_id": "person:terence-tao",
      "qid": "Q295981",
      "seed_born": 1975,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1975,
      "wd_died": null,
      "born_match": "exact",
      "died_match": "unavailable",
      "discrepancy_notes": []
    },
    "person:cedric-villani": {
      "person_id": "person:cedric-villani",
      "qid": "Q334065",
      "seed_born": 1973,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1973,
      "wd_died": null,
      "born_match": "exact",
      "died_match": "unavailable",
      "discrepancy_notes": []
    },
    "person:manjul-bhargava": {
      "person_id": "person:manjul-bhargava",
      "qid": "Q1398727",
      "seed_born": 1974,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1974,
      "wd_died": null,
      "born_match": "exact",
      "died_match": "unavailable",
      "discrepancy_notes": []
    },
    "person:maryam-mirzakhani": {
      "person_id": "person:maryam-mirzakhani",
      "qid": "Q1771279",
      "seed_born": 1977,
      "seed_died": 2017,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1977,
      "wd_died": 2017,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:maryna-viazovska": {
      "person_id": "person:maryna-viazovska",
      "qid": "Q23721911",
      "seed_born": 1984,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1984,
      "wd_died": null,
      "born_match": "exact",
      "died_match": "unavailable",
      "discrepancy_notes": []
    },
    "person:aryabhata-i": {
      "person_id": "person:aryabhata-i",
      "qid": "Q11359",
      "seed_born": 476,
      "seed_died": 550,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 476,
      "wd_died": 550,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:brahmagupta": {
      "person_id": "person:brahmagupta",
      "qid": "Q202943",
      "seed_born": 598,
      "seed_died": 668,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 598,
      "wd_died": 670,
      "born_match": "exact",
      "died_match": "circa",
      "discrepancy_notes": []
    },
    "person:al-khwarizmi": {
      "person_id": "person:al-khwarizmi",
      "qid": "Q9038",
      "seed_born": 780,
      "seed_died": 850,
      "seed_born_circa": true,
      "seed_died_circa": false,
      "wd_born": 780,
      "wd_died": 850,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:omar-khayyam": {
      "person_id": "person:omar-khayyam",
      "qid": "Q35900",
      "seed_born": 1048,
      "seed_died": 1131,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1048,
      "wd_died": 1131,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:bhaskara-ii": {
      "person_id": "person:bhaskara-ii",
      "qid": "Q213385",
      "seed_born": 1114,
      "seed_died": 1185,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1114,
      "wd_died": 1185,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:madhava-of-sangamagrama": {
      "person_id": "person:madhava-of-sangamagrama",
      "qid": "Q115590",
      "seed_born": 1340,
      "seed_died": 1425,
      "seed_born_circa": true,
      "seed_died_circa": true,
      "wd_born": 1340,
      "wd_died": 1425,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:al-kashi": {
      "person_id": "person:al-kashi",
      "qid": "Q115466",
      "seed_born": 1380,
      "seed_died": 1429,
      "seed_born_circa": true,
      "seed_died_circa": false,
      "wd_born": 1380,
      "wd_died": 1429,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:qin-jiushao": {
      "person_id": "person:qin-jiushao",
      "qid": "Q565225",
      "seed_born": 1202,
      "seed_died": 1261,
      "seed_born_circa": false,
      "seed_died_circa": false,
      "wd_born": 1208,
      "wd_died": 1261,
      "born_match": "mismatch",
      "died_match": "exact",
      "discrepancy_notes": [
        "born: seed=1202 vs WD=1208 (Δ6)"
      ]
    },
    "person:zhu-shijie": {
      "person_id": "person:zhu-shijie",
      "qid": "Q198126",
      "seed_born": 1249,
      "seed_died": 1314,
      "seed_born_circa": true,
      "seed_died_circa": false,
      "wd_born": 1249,
      "wd_died": 1314,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    },
    "person:seki-takakazu": {
      "person_id": "person:seki-takakazu",
      "qid": "Q470531",
      "seed_born": 1642,
      "seed_died": 1708,
      "seed_born_circa": true,
      "seed_died_circa": false,
      "wd_born": 1642,
      "wd_died": 1708,
      "born_match": "exact",
      "died_match": "exact",
      "discrepancy_notes": []
    }
  }
}