Product Suite

Our Services

Three precision tools covering the full lifecycle of digital trust — signing, automation, and verification.

Core Product

DNSign

DNSign is DN Deliveries' flagship digital signing and certificate verification system. It transforms the act of signing a document into a cryptographically verifiable event — with a certificate that anyone can validate from our servers at any time.

Unlike systems that rely on email attachments or static PDFs, DNSign anchors trust on the server side. The QR code embedded in every certificate points to a live verification endpoint — not a file that could be replaced or forged.

What's in every certificate

  • Handwritten signature image (captured at signing time)
  • Precise UTC timestamp of the signing event
  • IP address of the signer
  • Geolocation (if available and consented)
  • Unique certificate reference ID
  • QR code linked to server-side verification endpoint
Verify a Certificate →
DNSign Certificate
CERT: DN-2024-8F3C-A12B
✓ Valid
Document
Service Agreement v2.pdf
Signed By
Jonas Weber
Timestamp
2024-11-15 14:32:07 UTC+1
IP Address
93.184.2●●.●●●
Location
Berlin, Germany
Verify at
sign.dn-deliveries.de/signcert.php

SERVER VERIFICATION FLOW

  1. User scans QR code or enters certificate ID
  2. Browser sends request to sign.dn-deliveries.de
  3. Server fetches original certificate record
  4. Hash comparison confirms document integrity
  5. Verification result returned (Valid / Tampered / Not Found)
Automation

DNFlow

DNFlow is a lightweight workflow automation engine designed to eliminate the manual steps that follow a document signing event. Connect signing events to your existing business stack with minimal configuration.

Whether you need to push a signed document into a CRM, fire a notification to your team, or trigger a multi-step onboarding process — DNFlow handles it automatically the moment a signature is confirmed.

Example automation scenarios

  • Automatically push signed contracts to HubSpot or Salesforce
  • Send email / Slack notification on document signing
  • Trigger onboarding workflows after client signs agreement
  • Archive signed PDFs to Google Drive or S3
  • Connect to Zapier, Make, or custom webhooks
Learn About Our Platform →
AUTOMATION TRIGGER
● TRIGGER DNSign certificate issued
→ ACTION 1 POST to CRM webhook
→ ACTION 2 Send email notification
→ ACTION 3 Archive to storage bucket
✓ COMPLETE All actions executed
REST API

DNVerify API

DNVerify API is a Verification-as-a-Service endpoint. Send a certificate ID; receive a structured JSON response confirming validity, metadata, and integrity status — in milliseconds.

Designed for teams building SaaS tools, internal systems, or integration layers that need to verify DN Deliveries certificates without building UI. One endpoint, clean responses, OpenAPI-documented.

Response fields

  • status — valid | invalid | tampered | not_found
  • certificate_id — unique reference string
  • timestamp — ISO 8601 signing datetime
  • signature_hash — SHA-256 hash of the signature image
  • signer_ip — IP at time of signing
  • tampered — boolean integrity flag
# Request GET /api/v1/verify?id=DN-2024-8F3C-A12B Authorization: Bearer {api_key} # Response 200 OK { "status": "valid", "certificate_id": "DN-2024-8F3C-A12B", "timestamp": "2024-11-15T14:32:07Z", "signer_ip": "93.184.2xx.xxx", "signature_hash": "a3f2c19b8d04e76...", "tampered": false, "location": "Berlin, DE" }
Base URL
api.dn-deliveries.de/v1
Auth
Bearer token
Format
JSON / REST

Questions about our services?

Get in touch or explore the verification tool directly.

Verify a Certificate About DN Deliveries