EventOrchestr8: A Blockchain-Based, Secure QR Code Ticketing System using Cryptography
Khushi M, S Divyasree, N Harichandana, Aum Jalindar Jadhav, V Nethravathy · 2025
EventOrchestr8 introduces a blockchain-based secure QR ticketing system with cryptographic encryption platform focused on security, transparency, and scalability. The system leverages the Ethereum blockchain and IPFS for decentralized metadata storage, where IPFS stores event and user-specific information essential for generating a unique ticket ID. Each ticket ID is derived using SHA hashing, with AES encryption and HMAC-SHA used to secure QR code generation and validation. Upon ticket purchase, metadata is stored on IPFS, and ticket details is registered on the blockchain through smart contracts, ensuring integrity and resistance to tampering. QR code validation at event entry involves decrypting the embedded QR data using various algorithms and verifying it against IPFS metadata. The ticket status is then updated on the blockchain to prevent reuse. This cryptographically enhanced approach provides a user-friendly yet secure solution for both event organizers and attendees, protecting against duplication and unauthorized access.