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PAdES signature verification

Verify PAdES digital signatures in your PDF documents. Upload a signed PDF and Chaindoc validates the cryptographic integrity, certificate chain, timestamps, and eIDAS compliance using the EU DSS library.

Verify a PDF
VERIFY A PDF

Verify PDF Signature

Upload a signed PDF document to validate its digital signatures using EU DSS verification standards.

  • Free PAdES & eIDAS signature validation
  • Certificate chain and revocation checks
  • Detailed report ready in seconds
  • Your document is never stored

We'll send a verification code to confirm your identity.

EU DSS compliant

What PAdES verification checks

PAdES (PDF Advanced Electronic Signatures) is a standard defined by ETSI EN 319 142 that makes PDF signatures suitable for advanced electronic signatures. Chaindoc uses the EU Digital Signature Service (DSS) library to validate signatures against these standards.

Signature integrity

Confirms the PDF hasn't been modified after signing by recalculating and comparing cryptographic hashes.

Certificate validation

Checks the signing certificate's chain, validity period, and revocation status against trusted certificate authorities.

Timestamp verification

Validates embedded timestamps that prove when the signature was created. This matters for long-term validity, especially if a certificate expires later.

eIDAS compliance

Checks whether the signature meets EU eIDAS regulation standards for qualified electronic signatures and seals.

ETSI standards

Supported signature profiles

Chaindoc validates all four PAdES baseline profiles defined by ETSI. Each adds a layer of assurance on top of the previous one.

PAdES-BASELINE-B

The basic profile. Meets the minimum requirements for an advanced electronic signature under eIDAS.

PAdES-BASELINE-T

Adds a trusted timestamp, proving the signature existed at a specific point in time. Useful if you need to show that a contract was signed before a deadline.

PAdES-BASELINE-LT

Embeds long-term validation data (certificates and revocation info) so the signature can be verified even if the CA goes offline later.

PAdES-BASELINE-LTA

Adds an archive timestamp for long-term storage. Ensures the signature stays verifiable for years, even as cryptographic algorithms are retired.

FAQ

Common questions about PDF signature verification

How the verification check works, what the results mean, and what to do next. More at our support page.

Guides and resources

Document verification guides and resources

How blockchain hashing, audit trails, and tamper detection help you confirm a PDF is authentic and unaltered.

View all articles