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QUALIFIED TRUST SERVICES

Legally compliant digital signatures (eIDAS) to drive forward the digitalization of your business processes.

CORPORATE TRUST SERVICES

Cryptography-based trust services
to protect your digital identities,
data and business secrets.

Qualified electronic signature products based on eIDAS - legally binding and secure.

API GUIDE

Upgrade your application with electronic signatures by primesign.





DOCUMENT SIGNING API

Signing of PDF documents. primesign handles document processing and adds a visual signature stamp.

HASH SIGNING API

Signing of hash values. Your application handles document processing and provides the document viewer.

CASH BOX API

RKSV-compliant JWS- or raw signatures for cash box receipts.





primesign TRUST CENTER

All documents for our qualified trust services, certificate revocation list, root-/CA- certificates, etc.

RESOURCES

Fact sheets, product documentation and more.



BLOG

Insights on digital signatures, eIDAS and trust services.

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Signing Insights

Expert perspectives on qualified electronic signatures, eIDAS 2.0, remote and cloud signing, and EU trust services.

Compliance & Digital Resilience

RKSV: Austrian Cash-Register Compliance, Explained

Discover how RKSV compliance ensures secure receipt signing in Austria. Learn about cloud and HSM solutions for efficient, ongoing compliance management.

12 Aug 2026 · primesign Editorial

Trust Services & Qualified Signatures

QES vs AES vs SES: The Three Signature Levels Compared

eIDAS defines three electronic signature levels. Simple (SES) is easy but carries the least evidentiary weight; advanced (AES) is uniquely linked to a

12 Aug 2026 · primesign Editorial

Trust Services & Qualified Signatures

Long-Term Validation & PAdES Archiving

Ensure your digital signatures remain valid for decades with PAdES long-term validation and archiving solutions. Protect your important documents effortlessly.

10 Aug 2026 · primesign Editorial

Trust Services & Qualified Signatures

KYC & Remote Identification for Signing

Discover how remote identification enhances the trustworthiness of qualified electronic signatures, ensuring secure and efficient signing without branch visits.

10 Aug 2026 · primesign Editorial

Trust Services & Qualified Signatures

E-Signature Workflows for HR & Onboarding

How e-signature workflows speed up HR onboarding — matching AES, QES and SES to each document, from offer letters to employment contracts.

4 Aug 2026 · primesign Editorial

Trust Services & Qualified Signatures

Cross-Border Recognition of E-Signatures in the EU

How eIDAS makes qualified electronic signatures automatically valid across all EU member states, and what businesses need to know to rely on it.

4 Aug 2026 · primesign Editorial

Sign with confidence

Talk to a primesign expert about qualified e-signatures, seals and remote signing.

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