{
  "schema_version": "0.6",
  "verified_on": "2026-07-24",
  "notice": "기술적 권리 추적 자료이며 법률 자문이 아니다. approved라도 attribution과 변경 고지를 이행해야 한다.",
  "sources": [
    {
      "source_id": "uci-pendigits",
      "stage": "approved",
      "official_url": "https://archive.ics.uci.edu/dataset/81/pen-based%2Brecognition%2Bof%2Bhandwritten%2Bdigits",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["P"],
      "independent_source_group": "uci-pendigits-81",
      "deployment_role": "supervised_symbol",
      "vocabulary_policy": "intersection_378",
      "local_materialized": true,
      "notes": "공식 train/test split을 보존한다. writer ID는 배포 파일에 없다."
    },
    {
      "source_id": "uci-uji-pen-v2",
      "stage": "approved",
      "official_url": "https://archive.ics.uci.edu/dataset/177/uji%2Bpen%2Bcharacters%2Bversion%2B2",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["P"],
      "independent_source_group": "uji-pen-family",
      "deployment_role": "supervised_symbol",
      "vocabulary_policy": "intersection_378",
      "local_materialized": true,
      "notes": "공식 40/20 writer split을 보존한다."
    },
    {
      "source_id": "hwrt",
      "stage": "approved",
      "official_url": "https://github.com/MartinThoma/hwrt",
      "license_id": "ODbL-1.0",
      "commercial_allowed": true,
      "allowed_tracks": ["P"],
      "independent_source_group": "hwrt-2015",
      "deployment_role": "supervised_symbol",
      "vocabulary_policy": "intersection_378",
      "local_materialized": true,
      "notes": "프로젝트 승인 파일이 필요하며 공식 test는 제품 gate에서 제외한다."
    },
    {
      "source_id": "uci-uji-pen-v1",
      "stage": "approved",
      "official_url": "https://archive.ics.uci.edu/dataset/160/uji%2Bpen%2Bcharacters",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["P"],
      "independent_source_group": "uji-pen-family",
      "deployment_role": "supervised_symbol",
      "vocabulary_policy": "intersection_378",
      "local_materialized": true,
      "notes": "11-writer LOOW 원본이다. AIFlow 고정 비교용 8/1/2 writer split은 공식 split이 아니라 프로젝트 split이다."
    },
    {
      "source_id": "uci-character-trajectories",
      "stage": "rights_review",
      "official_url": "https://archive.ics.uci.edu/dataset/175/character%2Btrajectories",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "uci-character-trajectories-175",
      "deployment_role": "geometry_pretrain",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "CC BY 4.0 권리는 확인했지만 로컬 content hash·중복 검사가 끝나지 않았다. 한 writer·single pen-down이라 writer 평가에는 쓰지 않는다."
    },
    {
      "source_id": "uci-online-assamese",
      "stage": "rights_review",
      "official_url": "https://archive.ics.uci.edu/dataset/208/online%2Bhandwritten%2Bassamese%2Bcharacters%2Bdataset",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "uci-online-assamese-208",
      "deployment_role": "geometry_pretrain",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "CC BY 4.0 권리는 확인했지만 로컬 content hash·중복 검사가 끝나지 않았다. 45 writers·8235 samples이며 geometry-only다."
    },
    {
      "source_id": "quickdraw",
      "stage": "rights_review",
      "official_url": "https://github.com/googlecreativelab/quickdraw-dataset",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "google-quickdraw",
      "deployment_role": "geometry_pretrain",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "CC BY 4.0 권리는 확인했지만 subset content hash·중복 검사가 끝나지 않았다. 비수학 그림이라 geometry-only다."
    },
    {
      "source_id": "bouikhalene-math-symbols",
      "stage": "approved",
      "official_url": "https://www.sciencedirect.com/science/article/pii/S2352340916300828",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["P"],
      "independent_source_group": "bouikhalene-math-symbols",
      "deployment_role": "raster_verifier",
      "vocabulary_policy": "intersection_378",
      "local_materialized": true,
      "notes": "CC BY 4.0 논문의 supplementary EXAMPLE 425개를 로컬 materialize했다. 12개 378 교집합 class의 독립 raster verifier이며 writer metadata가 없어 writer-disjoint 제품 gate에는 쓰지 않는다."
    },
    {
      "source_id": "hasyv2",
      "stage": "rights_review",
      "official_url": "https://zenodo.org/records/259444",
      "license_id": "ODbL-1.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "hwrt-2015",
        "deployment_role": "raster_pseudo_stroke",
        "vocabulary_policy": "intersection_378",
        "local_materialized": true,
        "notes": "공식 Zenodo archive 34,597,561 bytes·MD5 fddf23f36e24b5236f6b3a0880c778e3을 검증했다. Greek 20,960개 중 단일 writer 19,243개(91.81%)를 격리하고 178 writers·1,717개를 writer-disjoint 1055/340/322로 materialize했다. HWRT 파생이므로 독립 출처로 세지 않으며 rights_review/R-track을 유지한다."
      },
    {
      "source_id": "uci-optdigits",
      "stage": "approved",
      "official_url": "https://archive.ics.uci.edu/dataset/80/optical%2Brecognition%2Bof%2Bhandwritten%2Bdigits",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["P"],
      "independent_source_group": "nist-sd19-derived",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "digits_latin_intersection",
      "local_materialized": true,
      "notes": "43 writers의 NIST 기반 8×8 block raster 5,620개를 128×128로 materialize했다. archive SHA-256·split·cross-source dedup은 ink06_uci_raster/manifest.json에 고정했다."
    },
    {
      "source_id": "uci-semeion-digits",
      "stage": "approved",
      "official_url": "https://archive.ics.uci.edu/dataset/178/semeion%2Bhandwritten%2Bdigit",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["P"],
      "independent_source_group": "semeion-1998",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "digits_latin_intersection",
      "local_materialized": true,
      "notes": "약 80명·1,593개 16×16 이진 숫자를 128×128로 materialize했다. writer ID는 배포 파일에 없어 pseudo/auxiliary 전용이며 manifest dedup 0건이다."
    },
    {
      "source_id": "uci-devanagari-389",
      "stage": "rights_review",
      "official_url": "https://archive.ics.uci.edu/dataset/389/devanagari%2Bhandwritten%2Bcharacter%2Bdataset",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "dhcd-2015",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "46 class·92,000개 32×32 raster다. 원문 CC BY 4.0 확인, 숫자 의미 매핑 없이 geometry-only."
    },
    {
      "source_id": "uci-bongabdo-894",
      "stage": "rights_review",
      "official_url": "https://archive.ics.uci.edu/dataset/894/bongabdo",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "bongabdo-2023",
      "deployment_role": "geometry_pretrain",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "111개 Bangla 전면 필기 page다. CC BY 4.0 확인, 고립기호 label에는 사용하지 않는다."
    },
    {
      "source_id": "codh-kmnist",
      "stage": "rights_review",
      "official_url": "https://codh.rois.ac.jp/kmnist/",
      "license_id": "CC-BY-SA-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "codh-kuzushiji",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "공식 CODH 페이지가 CC BY-SA 4.0과 attribution을 명시한다. share-alike 고지·content dedup 대기."
    },
    {
      "source_id": "mendeley-dasnus",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/xdj9f55rkm/1",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "dasnus-2026",
      "deployment_role": "geometry_pretrain",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "867 writers·11,475 Kurdish text lines와 writer split metadata. CC BY 4.0 확인, line crop 정책 검토 대기."
    },
    {
      "source_id": "mendeley-khld",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/ffjb8kfb7m/2",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "khld-2026",
      "deployment_role": "geometry_pretrain",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "47,944 Kurdish handwritten line images. CC BY 4.0 확인, DASNUS와 content/writer 중복 검사 대기."
    },
    {
      "source_id": "mendeley-kurdish-isolated-f8",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/f8z9jts5nb/3",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "kurdish-isolated-f8-2023",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "Central Kurdish isolated character raster. CC BY 4.0 확인, writer·content dedup 대기."
    },
    {
      "source_id": "mendeley-historical-arabic-xz6",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/xz6f8bw3w8/1",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "historical-arabic-xz6-2024",
      "deployment_role": "geometry_pretrain",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "8권·40개 역사 Arabic page와 전사. CC BY 4.0 확인, page crop만 geometry pretrain 후보."
    },
    {
      "source_id": "mendeley-banglanet45",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/47fpd8js36/1",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "banglanet45-2026",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "45 class·4,487 real raster와 augmentation 분리. CC BY 4.0 확인, real-only content dedup 대기."
    },
    {
      "source_id": "mendeley-marathi-fns",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/fns3x4bg6s/2",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "marathi-fns-2025",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "4 contributors의 28×28 Marathi characters. CC BY 4.0 확인, 작은 writer 수를 별도 slice로 보고."
    },
    {
      "source_id": "mendeley-arabic-numerical",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/7ms52rt5tk/1",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "arabic-numerical-2023",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "demographic metadata가 있는 Arabic numerical handwriting. CC BY 4.0 확인, ASCII digit 의미로 직접 매핑하지 않는다."
    },
    {
      "source_id": "mendeley-manipuri-3337",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/3337bdvx3v/4",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "manipuri-3337-2019",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "다양한 연령의 5,000+ Meetei-Mayek 128×128 isolated raster. CC BY 4.0 확인."
    },
    {
      "source_id": "mendeley-kzhmara-kpit",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/zb66pp7vjh/1",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "kzhmara-kpit-2022",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "70k Kurdish digits+245k isolated characters. CC BY 4.0 확인, 다른 Kurdish collection과 중복 검사 대기."
    },
    {
      "source_id": "mendeley-gujarat-hwd",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/44std32rxb/2",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "gujarat-hwd-2025",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "350+ writers·11,000 Gujarati digit images. CC BY 4.0 확인, ASCII label에는 직접 매핑하지 않는다."
    },
    {
      "source_id": "mendeley-chakmalipi",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/rzjphbvz9f/1",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "chakmalipi-2026",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "48 grapheme·37,708개의 40×40 Chakma raster. CC BY 4.0 확인."
    },
    {
      "source_id": "mendeley-gujarati-isolated-h8",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/h8crhcysvf/1",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "gujarati-h8-2022",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "75,000 Gujarati isolated character 28×28 raster. 제목이 test라 provenance·writer metadata 추가 검토 필요."
    },
    {
      "source_id": "mendeley-hypercomplex-bangla",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/sx2zr63y7d/1",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "hypercomplex-bangla-2023",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "580 class Bangla handwriting raster. CC BY 4.0 확인, writer split·중복 검사 대기."
    },
    {
      "source_id": "mendeley-kurdish-complete",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/shny5k9f4b/1",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "kurdish-complete-2024",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "84 writer-set의 Kurdish 문자 positional forms와 digits. CC BY 4.0 확인."
    },
    {
      "source_id": "zenodo-greek-alphabets-14554030",
      "stage": "approved",
      "official_url": "https://zenodo.org/records/14554030",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["P"],
      "independent_source_group": "greek-alphabets-14554030",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "intersection_378",
      "local_materialized": true,
      "notes": "공식 MD5가 일치한 0.6 Greek 교집합 원본 crop 5,736개 중 120개 scanner-fragment noise를 quarantine하고 5,616개·22 labels를 128×128로 materialize했다. 증강 split은 제외하고 acquisition form split을 사용하며 writer metadata가 없어 writer/device 제품 gate에는 쓰지 않는다."
    },
    {
      "source_id": "mendeley-odia-giet",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/r9mrt9fw8y/1",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "odia-giet-2024",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "34,138 original Odia raster와 파생 변환·augmentation을 분리해야 한다. CC BY 4.0 확인."
    },
    {
      "source_id": "mendeley-bps-bangla",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/mt6jfkxprj/2",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "bps-bangla-2025",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "407 students·24,420 Bangla 32×32 images와 demographic slice. CC BY 4.0 확인."
    },
    {
      "source_id": "mendeley-marathi-giet",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/bxswfmx28z/1",
      "license_id": "CC-BY-4.0",
      "commercial_allowed": true,
      "allowed_tracks": ["R"],
      "independent_source_group": "marathi-giet-2024",
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "geometry_only",
      "local_materialized": false,
      "notes": "6,010 original Marathi 128×128 images와 grayscale/binary/inverted 파생본. CC BY 4.0 확인."
    },
    {
      "source_id": "mendeley-handwritten-numbers-hn",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/b9v9x5pk96/1",
      "license_id": "CC-BY-4.0-PROVENANCE-REVIEW",
      "commercial_allowed": false,
      "allowed_tracks": ["R"],
      "independent_source_group": null,
      "deployment_role": "evaluation_only",
      "vocabulary_policy": "evaluation_only",
      "local_materialized": false,
      "notes": "10,000 public-document 숫자 이미지지만 원문서별 권리·라벨 오류 가능성이 있어 P-track 차단."
    },
    {
      "source_id": "mendeley-mnistdigit-mirror",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/k864xjhrw6/1",
      "license_id": "UPSTREAM-MNIST-REVIEW",
      "commercial_allowed": false,
      "allowed_tracks": ["R"],
      "independent_source_group": null,
      "deployment_role": "evaluation_only",
      "vocabulary_policy": "evaluation_only",
      "local_materialized": false,
      "notes": "MNIST 재게시 mirror의 CC 표시는 upstream 권리를 새로 부여하지 않으므로 P-track과 독립 출처 집계에서 제외."
    },
    {
      "source_id": "modi-hchar",
      "stage": "rights_review",
      "official_url": "https://data.mendeley.com/datasets/pk2zrt58pp/1",
      "license_id": "CC-BY-4.0-WITH-RESEARCH-ONLY-CONFLICT",
      "commercial_allowed": false,
      "allowed_tracks": ["R"],
      "independent_source_group": null,
      "deployment_role": "evaluation_only",
      "vocabulary_policy": "evaluation_only",
      "local_materialized": false,
      "notes": "페이지는 CC BY 4.0이나 설명에 research-only·no redistribution 조건이 있어 상용 학습을 차단."
    },
    {
      "source_id": "nist-emnist",
      "stage": "rights_review",
      "official_url": "https://www.nist.gov/itl/products-and-services/emnist-dataset",
      "license_id": "US-GOVERNMENT-WORK-REVIEW",
      "commercial_allowed": false,
      "allowed_tracks": ["R"],
      "independent_source_group": null,
      "deployment_role": "raster_pseudo_stroke",
      "vocabulary_policy": "digits_latin_intersection",
      "local_materialized": false,
      "notes": "NIST SD19 파생 814,255 raster다. 공식 이용조건을 프로젝트 P-track에서 승인하기 전에는 배포 학습에 넣지 않는다."
    },
    {
      "source_id": "mathwriting",
      "stage": "rights_review",
      "official_url": "https://github.com/google-research/google-research/tree/master/mathwriting",
      "license_id": "CC-BY-NC-SA-4.0",
      "commercial_allowed": false,
      "allowed_tracks": ["R"],
      "independent_source_group": null,
      "deployment_role": "evaluation_only",
      "vocabulary_policy": "evaluation_only",
      "local_materialized": true,
      "notes": "2026-07-24 공식 mathwriting/README 재검증: 데이터는 CC BY-NC-SA 4.0이다. 상위 repository의 일반 dataset 문구보다 하위 dataset 고유 조건을 우선하며 배포 checkpoint 학습에서 차단한다."
    },
    {
      "source_id": "crohme",
      "stage": "rights_review",
      "official_url": "https://www.isical.ac.in/~crohme/CROHME_data.html",
      "license_id": "research-noncommercial",
      "commercial_allowed": false,
      "allowed_tracks": ["R"],
      "independent_source_group": null,
      "deployment_role": "evaluation_only",
      "vocabulary_policy": "evaluation_only",
      "local_materialized": true,
      "notes": "2026-07-24 공식 CROHME 페이지 재검증: academic/research purpose only, no commercial use다. 연구 평가 전용이며 배포 가중치에 포함하지 않는다."
    }
  ]
}