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Trusted timestamping
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<p>Trusted timestamping is the process of <a href="/facts/Computer_security/7E5dIy7G">securely</a> keeping track of the creation and modification time of a document. Security here means that no one—not even the owner of the document—should be able to change it once it has been recorded provided that the timestamper's integrity is never compromised. </p><p>The administrative aspect involves setting up a publicly available, trusted timestamp management infrastructure to collect, process and renew timestamps. </p>