FAQ

Last updated:July 8, 2026

When using WPS PDF Timestamp, users often ask about 3 areas: time meaning, trust, and status handling; this section includes 3 common questions and a glossary.

FAQ

What is the difference between a timestamp and a signing time?

  1. A signing time is usually provided by the signer’s local environment.
  2. A timestamp time is provided by a trusted third-party server.
  3. When you need to prove the state of a document at a specific time, review the timestamp information first.

Can a timestamp be forged?

  1. A timestamp is issued by a trusted timestamp server.
  2. Review the timestamp server and timestamp status when checking it.
  3. If the status is normal, it can serve as an important reference for verifying document time information.

What should I do if a timestamp appears expired?

  1. The timestamp itself does not expire.
  2. If related certificates need renewal, review the certificate status of the timestamp server.
  3. If validation behaves unexpectedly, check the server-related settings or the current validation result again.

Glossary

TermDefinition
TimestampTime proof provided by a trusted timestamp server to show the state of a document at a specific point in time.
Timestamp serverThe service provider that supplies trusted time and issues timestamps.
Timestamp statusThe validation result shown for the current timestamp, used to help judge whether it is valid.
Signing timeThe time information recorded for a signing action, usually understood separately from a trusted timestamp.