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News List May 20, 2008   Modification of Time Attribute Certificate is scheduled by Seiko Instruments Inc. New

PFU TimeStamp Service is a solution that realizes proof of existence and proof of completeness of digital data. It helps to protect digital data from tampering that troubles computerized societies.

	PFU's time stamps are attached to digital data to promote reliability by offering proof of existence and proof of completeness verifiability.
	These proofs ensure the evidential value of the digital data.