How to Validate Timestamp Online
Step-by-step instructions to validate the timestamp on a signed pdf with ZiaSign.
Why this workflow matters
ZiaSign's timestamp validator verifies the authenticity and integrity of a PDF's cryptographic timestamp. Confirm that the timestamp was issued by a trusted authority and that the document hasn't been modified since.
Step by step
Validate Timestamp is one of the fastest ways to validate the timestamp on a signed pdf. Pro access gives you the full workflow.
- 1
Upload your signed PDF
- 2
Timestamp is verified
- 3
View validation results
Frequently asked questions
What is validated?
The timestamp's cryptographic signature, issuing authority, and whether the document has been modified since timestamping.
What if validation fails?
A failed validation means the document was modified after timestamping, the timestamp is expired, or the issuing authority is not trusted.
Can I validate timestamps from other tools?
Yes. The validator works with timestamps from any RFC 3161 compliant Time Stamping Authority, not just ZiaSign.
Is timestamp validation legally accepted?
Yes. Cryptographic timestamp validation is accepted in courts and regulatory proceedings as proof of document existence and integrity.
More specific workflows for this tool
Related guides
How to Add Signature Field Online
Step-by-step instructions to add empty digital signature fields to a pdf for recipients to sign with ZiaSign.
Read guideHow to Add Timestamp Online
Step-by-step instructions to add a trusted timestamp to a pdf document with ZiaSign.
Read guideHow to Certify PDF Online
Step-by-step instructions to apply available pdf certificate settings and allowed-change preferences with ZiaSign.
Read guideReady to run the actual workflow?
You have the steps. Open the tool, process the file, and then move into the next recommendation if the document still needs cleanup, protection, or conversion.