Blockchain based Solution for Development of Certification Authentication System

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Project Overview


Quality Council of India & NABL
Blockchain based Solution for Development of Certification Authentication System


1. Web based Certification Platform
2. Hyperledger Sawtooth Blockchain setup


Blockchain based Certificate Authentication system is developed for process of authentication of product reports provided by the sellers on E-Marketing Platforms and to make the entire ecosystem transparently verifiable.

Business Need

Whenever a seller uploads a certificate on GeM (Government-e-marketplace) platform, there is no mechanism in place to verify whether the certificate is authentic, or, was approved by the correct laboratory.

A need is identified to make the entire ecosystem transparently verifiable so that any user can view and verify the certifications received by the product seller. Such transparency requires a robust security system so that only the authorized personnel are able to make any changes to the certificate.


A blockchain based Certificate Authentication system is proposed to be developed. Key objective of this system is:

  • Automation of process of authentication of Lab from which product testing certificate has been provided by the seller
  • Provision to view NABL certificate of Lab who has conducted product testing for a product
  • Check the authenticity of product certificates uploaded by seller and generate its authenticity report
  • Generate a trail of certificates generated by different Labs to different users
  • Check authenticity of supplier

A public key cryptography (also known as Asymmetric encryption) is implemented with the Blockchain acting as the universal ledge with following process implementation.

  • On registration of the actors, their account credentials (public key, private key, and other identifier parameters) created on Hyperledger Sawtooth.
  • The privileges, rights, and restrictions of the actors maintained on-chain.
  • The public keys of the actors generated from their provided mnemonics mapped to the distributed database.
  • The certificate generated by a Testing Lab appended with identifier tags of the Testing Lab before getting sent to the User.
  • The certificate data and the s3 URL encrypted using a randomly generated AES key.
  • To view/share the certificate, the Consumer must ask for the User's Private Key and the AES key to decrypt the s3 URL and the certificate.

Technology Stack:

  • Frontend: Angular/React, Javascript, HTML,CSS, Bootstrap
  • Backend: Node.js
  • Blockchain: Hyperledger Sawtooth