DN Deliveries provides enterprise-grade digital signing, tamper-proof certificate verification, and seamless workflow automation — built for the way business moves today.
Three purpose-built tools that cover the full lifecycle of digital trust — from signing to verification to automated delivery.
A complete digital signing and certificate verification system. Users sign documents via handwritten input; the system generates a tamper-evident PDF certificate with a QR code linking to live server-side validation.
A lightweight workflow engine that connects signing events to your business stack. Automate document delivery, trigger CRM updates, and manage complex multi-step processes without code.
A REST API that lets any third-party system validate DN Deliveries certificates programmatically — returning validity, timestamps, signature hashes, and tamper status in milliseconds.
DNSign creates a verifiable chain of custody the moment a document is signed.
A signer provides a handwritten signature via any device. The system records the exact timestamp, IP address, and location.
A PDF certificate is created containing all metadata and a unique reference ID. The certificate is hashed and stored on our servers.
A QR code linking to the live verification endpoint is embedded into the certificate PDF. Anyone can scan and verify instantly.
The verification page fetches the original certificate from our servers and confirms no modifications have been made.
Enter any DN Deliveries certificate ID to confirm its authenticity directly from our servers — no email attachment trust required.
Go to VerificationNot just a signature tool — a complete digital trust infrastructure.
Every certificate is hashed server-side. Any modification is immediately detectable during verification.
IP address, timestamp, and geolocation data are recorded at the moment of signing, building a strong audit trail.
The QR code bypasses email attachment trust. Verification happens live against our servers — not a static file.
DNVerify API integrates into any CRM, SaaS tool, or internal system with standard REST calls and JSON responses.
DNFlow connects signing events to your existing business processes without custom development work.
All data processing follows EU standards. German hosting, transparent privacy policy, user rights upheld.
Start verifying and signing documents with full audit trails and server-validated certificates.