Live events such as conferences, hackathons, and festivals increasingly rely on digital platforms to enhance engagement and participation. However, most existing systems depend on centralized databases for recording attendance, achievements, and participation records, which introduces issues related to trust, data manipulation, and long-term verification. Blockchain technology offers an alternative approach by enabling tamper-resistant and publicly verifiable records. This paper explores the integration of blockchain-based participation verification within an event engagement platform called NOMAD. The proposed approach utilizes decentralized records to issue permanent participation badges that confirm event attendance and engagement. Unlike traditional reward systems that rely entirely on centralized infrastructures, the proposed system records key participation proofs on-chain while maintaining operational flexibility through off-chain data storage. This hybrid architecture reduces transaction overhead while preserving the benefits of immutability and transparency. The study discusses the motivation behind using blockchain in event ecosystems, examines the design considerations of participation verification, and evaluates the potential impact on user trust, event analytics, and long-term engagement. The findings suggest that selective blockchain integration can provide durable proof of participation while maintaining scalability for large-scale events.

 Keywords:

blockchain verification, event engagement platforms, decentralized identity, participation badges, hybrid blockchain architecture, digital event systems.