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Timestamp PDF
Add a trusted timestamp that proves the file existed unchanged at this moment.
About Timestamp PDF
A trusted timestamp proves that a file existed in exactly this form at a given moment. PDF readers can check it, and any later change to the file shows up.
- What you add
- One PDF file.
- What you get
- One timestamped PDF.
How to use it
- Add your PDF.
- Choose a timestamp authority.
- Start.
- Download the timestamped PDF.
Settings
- Timestamp service: one of three public timestamp authorities that vouch for the time.
Good to know
- Only a fingerprint (hash) of the file is sent to the timestamp authority, not the file itself.
- A timestamp proves when, not who. To prove who signed, use Digital signature (certificate).
Your files are processed only for this operation and deleted when it finishes. No one at Tools War can view what you upload.