# Notices and Attribution

## JMdict / KANJIDIC2 (EDRDG)

This data package uses the JMdict and KANJIDIC2 dictionary files. These files
are the property of the **Electronic Dictionary Research and Development
Group** (EDRDG), and are used in conformance with the Group's licence
(CC BY-SA 4.0). See https://www.edrdg.org/edrdg/licence.html

The JMdict/KANJIDIC2-derived content in this package has been modified: the
XML sources are restructured into SQLite, example sentences are removed, and
derived layers (Japanese definitions, Chinese gloss translations, kanji
variant/contrast/synonym/transitivity notes in Chinese and English,
English→Japanese word-choice cards, frequency rankings, Chinese kanji glosses)
have been added by Y1Z with LLM assistance, using the upstream gloss text as
input. These derived layers are © Y1Z and are licensed under the same
CC BY-SA 4.0 terms.

## Japanese Wiktionary

Part of the Japanese definitions (`jpn_defs`, `source = "wiktionary"`) come
from the **Japanese-language Wiktionary** (CC BY-SA), extracted via the
Wiktextract project at kaikki.org. © Wiktionary contributors.

## KanjiVG

Stroke-order data (`kanji_strokes`) comes from **KanjiVG**, © Ulrich Apel,
licensed under CC BY-SA 3.0. https://kanjivg.tagaini.net/
The SVG sources have been converted to a stroke-path table.

## JLPT level estimates

`vocab_jlpt` derives from Jonathan Waller's JLPT Resources (CC BY,
tanos.co.uk), as curated by the stephenmk/yomitan-jlpt-vocab project
(CC BY-SA 4.0). The JLPT has published no official vocabulary lists since
2010 — **all N1–N5 labels are community estimates, not official data.**

## Trademark

"Tomoshi" and the Tomoshi logo are brand identifiers of the Tomoshi project
(Y1Z) and are not covered by any of the licenses above.