Banknote seal (China)

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A cash seal (simplified Chinese: 宝钞印; traditional Chinese: 寳鈔印; pinyin: Baochao Yin; "Baochao" means "valuable money", "Yin" means "seal") is a type of seal used as an anti-counterfeiting measure on paper money or banknotes. The cash seal first appeared during the Song dynasty in China.

The short name is Chao Yin (simplified Chinese: 钞印; traditional Chinese: 鈔印), and the full name is Seal of Baochao (simplified Chinese: 宝钞之印; traditional Chinese: 寳鈔之印; pinyin: Baochao Zhiyin), or Baochao Yinjian (simplified Chinese: 宝钞印鉴; traditional Chinese: 寳鈔印鑑). The name can also be simply translated as "money seal" or "banknote seal".