Blockchain-Based E-KYC System

The Blockchain-Based E-KYC System is a decentralized identity verification platform built on Ethereum that enables secure, tamper-proof, and reusable KYC records.

It eliminates repeated KYC processes by maintaining a central blockchain-based KYC registry controlled by a governing authority, allowing financial institutions to verify customers without duplicating verification efforts.

Tech Stack

• Blockchain Platform: Ethereum
• Smart Contracts: Solidity
• Blockchain Tools: Truffle, Ganache
• Web3 Integration: Web3.js
• Wallet: MetaMask
• Backend: Node.js
• Frontend: React.js

Key Highlights

• Decentralized E-KYC platform built on Ethereum
• Government-controlled central KYC registry on blockchain
• Cryptographically secure and tamper-proof KYC records
• Eliminates redundant re-KYC across multiple organizations
• Transparent, auditable, and trust-minimized system

Features

• KYC Registry Management
  • Financial institutions and organizations can add customer KYC records to the blockchain-based registry.
  • KYC records are stored immutably using smart contracts.
• KYC Request Workflow
  • Organizations can request KYC access from customers.
  • Customers can view, approve, or deny KYC requests using their wallet.
  • All approvals and denials are recorded on-chain.
• Customer Control & Consent
  • Customers retain full control over their KYC data.
  • Consent is enforced through smart contracts, ensuring transparency and trust.
• KYC Verification & Reuse
  • Organizations can verify existing KYC records directly from the blockchain.
  • Prevents repeated KYC for the same customer across different institutions.
  • Reduces onboarding time and operational overhead.

Prerequisites

• Node.js & npm
• Ganache (local Ethereum blockchain)
• MetaMask browser wallet
• Truffle (for compiling & deploying contracts)

Installation

1. Clone the Repository
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   git clone https://github.com/patkarmandar/E-KYC.git
   cd E-KYC

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2. Install Dependencies (Smart Contracts & Backend)
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   npm install

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3. Start a Local Blockchain
   • Open Ganache (GUI or CLI).
   • Ensure the network RPC endpoint is set to default: http://127.0.0.1:7545
4. Configure MetaMask
   • Install MetaMask extension in your browser.
   • Add a new network -> Custom RPC with:
     • RPC URL: http://127.0.0.1:7545
     • Chain ID: 1337 (or Ganache network ID)
   • Import one account from Ganache using its private key.
5. Compile & Deploy Smart Contracts
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   npx truffle compile
   npx truffle migrate --reset

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6. Run the Frontend (React)
   • Open a new terminal inside the project:
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   cd client
   npm start

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   • This starts the React UI on: http://localhost:3000
7. Make sure Truffle config (truffle-config.js) network settings point to Ganache’s host and port.