The classical Chinese words of Wikipedia. The fonts are Small Seal Script, which come from 「CNS11643中文標準交換碼全字庫」, Since the font styles are copied from the ancient Chinese book, Shuowen Jiezi (說文解字) without innovation, the character shapes are therefore in the public domain (however the original Truetype .ttf file is still copyrighted, to clarify).
The classical Chinese words of Wikipedia, the fonts are Small Seal Script, which come form [http://www.cns11643.gov.tw/web/download.jsp 「CNS11643中文標準交換碼全字庫」], since the fonts style are copied from the ancient Chinese book, Shuowen