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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.



Kagerou Project Song -

This is a guide to the song series — a sprawling, time-looping, tragic, and deeply interconnected story told through vocaloid songs, light novels, manga, and anime. Since you asked specifically for the song guide, I’ll focus on the core tracks, their story order, and what each one reveals. What is the Kagerou Project? Created by Jin (Shizen no Teki-P) featuring art by Shidu and Wannyanpu . The story follows a group of teens with supernatural “eye powers” (related to the red eyes of a mythical snake entity) stuck in a cycle of death and resetting time on August 14–15.