In the Sinosphere, seals (stamps) can be applied on objects to establish personal identification. They are commonly applied on items such as personal documents, office paperwork, contracts, and art. They are used similarly to signatures in the West. Unlike in the West, where wax seals are common, Sinosphere seals are used with ink. Of Chinese origin, the process soon spread beyond China and across East and Southeast Asia. Various countries in these regions currently use a mixture of seals and hand signatures, and, increasingly, electronic signatures. Chinese seals are typically made of stone, sometimes of metals, wood, bamboo, plastic, or ivory, and are typically used with red ink or cinnabar paste (Chinese: 朱砂; pinyin: zhūshā). The word 印 ("yìn" in Mandarin, "in" in Japanese and Korean, "ấn" and "in" in Vietnamese) specifically refers to the imprint created by the seal, as well as appearing in combination with other morphemes in words related to any printing, as in the word "印刷", "printing", pronounced "yìnshuā" in Mandarin, "insatsu" in Japanese. In the western world, Asian seals were traditionally known by traders as chop marks or simply chops, a term adapted from the Hindi chapa and the Malay cap, meaning stamp or rubber stamps. In Japan, seals, referred to as inkan (印鑑) or hanko (判子), have historically been used to identify individuals involved in government and trading from ancient times. The Japanese emperors, shōguns, and samurai had their personal seals pressed onto edicts and other public documents to show authenticity and authority. Even today, Japanese citizens' companies regularly use name seals for the signing of a contract and other important paperwork.
History
Origin legends and early history Throughout Chinese history, seals have played an important part and are known to have been used both by government authorities and private individuals for thousands of years. The earliest known examples of seals in ancient China date to the Shang dynasty (c. 1600 – c. 1046 BC) and were discovered at archaeological sites at Anyang. However, how these ancient seals were used remains to be uncovered as it is only starting from the Spring and Autumn period (771–476 BC) of the Zhou dynasty (1046–256 BC) that there is an increase in the quantity of Chinese seals paired together with textual references to them. Until the end of the Warring States period (476 BC–221 BC), all seals were only known as xǐ 璽 pinyin: Xǐ, regardless if they were used by government officials or in private use and regardless of any material used to make them. During the Han dynasty (202–220 AD), an origin myth of the supposed first seal in Chinese history was recorded, this myth states that the first seal was given to the Yellow Emperor by a yellow dragon which had a chart on its back. According to another origin myth, the first seal was given to Emperor Yao by a fenghuang (a mythical bird) as he was sitting in a boat. In both of these origin legends, the gifting of the seal is a symbol that the Mandate of Heaven was conferred to its recipient. So when Tang, the first ruler of the Shang dynasty, overthrows the last tyrannical ruler of the (possibly mythical) Xia dynasty (presumed c. 2070 – c. 1600 BC), he seizes the royal seal from him to symbolically establish his power.
Imperial China
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