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Time Stamp Service

Proves that electronic documents are existed at a specific time
and was not tampered ever since.
In nature, it is easy to copy electronic documents and hard to tell whether they have been tampered with. To prove that contents of electronic documents existed at a certain time period, time-verifying authorities attach timestamp to the data of electronic document and provide electronic signature as a sign of proof.

Service Flow

Service Flow: create the hash value of electronic documents - ask the time confirming of electronic documents - create the time stamp token - Provide electronic signature with the private key of the TSA certificate - save the time stamp token - end the time stamp token - standard-time reception equipment, receive the satellite time

Subscription

OCSP Subscription : Conclude the contract - Register the institutions’ information - Conduct a test - Start the service