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Time-stamping is an online mechanism that allows to show that a number of data have existed and have not been altered from a specific moment in time. This protocol is described in RFC 3161 and is in the registration of Internet standards.
A Time-stamping authority acts as a trusted third party witness the existence of such electronic data at a specific date and time.
Time-stamping which is applied to the online registers and agreements of license ColorIURIS is emited by the "Fábrica Nacional de Moneda y Timbre" (Royal House of the Coin).
