Control Access Securely Using Blockchain-Based Identity Management

Traditional access control systems are centralized, prone to data breaches, and difficult to audit. Using blockchain and smart contracts for identity-based access enables transparent, tamper-proof, and decentralized permission control across systems and organizations.

Build a smart contract system that manages user identities, assigns roles, and grants or revokes access to digital resources. Every permission change is logged on-chain for transparency, and dApps or platforms can query the contract for real-time access checks.

Admins assign roles to users via their wallet addresses. Smart contracts enforce who can view or modify resources. Each change in access is recorded on-chain. Optional integration with IPFS or other storage platforms allows secure access to files and data controlled by the contract.

• Solidity smart contract for defining roles, assigning permissions, and enforcing access
• Wallet-based user identities (MetaMask, WalletConnect)
• React.js frontend for managing users, roles, and checking access
• IPFS for storing protected files with contract-controlled access links
• Integration-ready with any Web3 dApp needing identity-based access logic

• OpenZeppelin AccessControl Guide
• Building a Role-Based DApp
• Decentralized Identity with Ceramic
• IPFS for Permissioned File Hosting