The same list the app carries under Settings → Licences. Attribution is a condition of several of these, not a courtesy.
Kezi · Licences
Where the data and the type come from
Kezi stands on open datasets. The mnemonics, Vietnamese content, example sentences, reading pieces and confusable notes are our own work; everything below is not, and is used under the licence named.
CC-CEDICT
Word entries and traditional-form mappings derive from CC-CEDICT, licensed CC BY-SA 4.0. mdbg.net/chinese/dictionary?page=cedict
Unicode Unihan database
Hán-Việt readings derive from the kVietnamese field of
the Unicode Unihan database, used under the
Unicode License. They were checked against the source by hand
and 15 high-frequency readings were corrected.
unicode.org
Make Me a Hanzi / Hanzi Writer
Stroke-order and decomposition data come from Make Me a Hanzi, which derives from the Arphic PL fonts and carries the Arphic Public Licence; the animation format follows Hanzi Writer. github.com/skishore/makemeahanzi
Character frequency
Coverage percentages are estimates against Jun Da's modern Chinese character frequency list. They are estimates from a corpus, which is why every number on this site carries a ≈.
Noto Serif SC
The hanzi on this site and in the app are set in Noto Serif SC, instanced at weight 600 and subset to the characters actually used. SIL Open Font License 1.1 — read the licence.
Fraunces
The display serif is Fraunces, copyright 2019 The Fraunces Project Authors, SIL Open Font License 1.1. github.com/undercasetype/Fraunces
Nội dung tiếng Việt
Âm Hán-Việt lấy từ cơ sở dữ liệu Unihan của Unicode và đã được rà soát, hiệu đính bằng tay. Phần nghĩa, mẹo nhớ, câu ví dụ và các đoạn đọc bằng tiếng Việt là do chúng tôi tự viết.