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libhangul — data/hanja/hanja.txt (https://github.com/libhangul/libhangul), 파일 머리의 고지 그대로:

Copyright (c) 2005,2006 Choe Hwanjin
All rights reserved.

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BabelStone IDS (https://www.babelstone.co.uk/CJK/IDS.TXT) — 파일 머리(2025-06-27 판)의 이용 안내 그대로:

Ideographic Description Sequences (IDS) for CJK Unified Ideographs
URL: <https://babelstone.co.uk/CJK/IDS.TXT>
File Encoding: UTF-8 with BOM and CR/LF
Maintained by: Andrew West (魏安) <babelstone@gmail.com>
Unicode Version: 16.0 (September 2024)
Total entries: 97,680
File Date: 2025-06-27
2. Under U.S. copyright law, data (i.e. a collection of facts) is not eligible to copyright protection (see
<https://sco.library.emory.edu/research-data-management/publishing/copyright-data.html>), and as IDS descriptions
for CJK ideographs are facts not original creative compositions, IDS sequences in themselves are not eligible for
copyright protection (that is to say, you could no more copyright 彼 = ⿰彳皮 than you could copyright 1 + 1 = 2).
Therefore, anyone is free to make use of the IDS data provided in this file for personal or commercial purposes
without asking permission or providing attribution. I furthermore waive any copyright claims to the presentation
format of the IDS data used in this file, so anyone is free to fork the file, or use it as the basis for a new IDS
data set.