Products

Overview

sproof allows you to easily issue digital documents. Issue and manage digital documents with our web app with user friendly drag and drop or use our easy-to-integrate API for signing digital documents with any application.

  1. Create a digital document in your application
  2. Drop the document in our web app or call the sproof API to sign your document
  3. Share or archive the document
  4. Anyone in possession of your digital document can easily verify your signature

Read the sproof paper for full insights into the sproof protocol and how the features of blockchain are employed. This peer-reviewed paper is published at the conference ICISSP 2019.

Download

sproof code is open and freely available on GitHub. Browse the sproof source code and documentation and learn how to integrate sproof in your applications.

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Description

The sproof web app and the sproof API provides three basic actions:

  • Register. Register a digital document and sign it with your unique signature. The document can either be published in a decentralized storage along with a digital signature secured in a blockchain or your document remains private and only the digital signature is published alone.
  • Revoke. Revoke any previously signed documents. This is useful if documents have expired or are rendered void for any reason.
  • Verify. Check the integrity and authenticity of a digital document. If the document is valid you will receive information about the issuer.

Pricing

Get the package that suits your needs. Registrations of documents are aggregated and uploaded to the blockchain once or twice a day. Additional registrations and uploads can be purchased at any time.

SMALL

  • 500 Registrations/Month
  • 1 Daily upload
  • API with Docker Container
  • Web Verification UI

MEDIUM

  • 5,000 Registrations/Month
  • 1 Daily upload
  • API with Docker Container
  • Web Verification UI
  • Own verification node

LARGE

  • 50,000 Registrations/Month
  • 2 Daily uploads
  • API with Docker Container
  • Web Verification UI
  • Own verification node

Contact us for pricing. We offer great discounts and special packages for academia and charity organizations.