Verify a signed document
Confirm a completed document is authentic and untampered.
3 min read · Updated June 28, 2026
Every completed document carries a real cryptographic seal (PAdES/PKCS7 with an X.509 certificate), so its authenticity can be verified, not just trusted.
- The seal covers the whole document, so any later change breaks verification.
- A companion audit certificate (a separate PDF you can download) records, per signer, their name, email, when they signed, and the address they signed from.
- An RFC-3161 timestamp proves when it was sealed, independent of any clock you have to trust.
How to verify
- Use the built-in verify tool: upload a completed PDF and Stoatify checks its signatures.
- Or verify the PKCS7 signature with any standard tool, it's a real, portable signature.
Good to know
By default Stoatify seals documents with a certificate it generates for your organization; you can upload your own certificate if you need an externally-trusted chain. The verify tool is part of the e-signature suite (a paid feature); the signature itself, being standard PKCS7, can be checked anywhere.
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