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Decentralized identity improves conference tracking via verifiable credentials (VCs) stored in attendee wallets. VCs include event-specific data (e.g., ticket type, session access). Smart contracts automate check-ins by validating VCs against entry points, reducing wait times. Zero-knowledge proofs let attendees prove eligibility (e.g., “VIP pass holder”) without sharing personal details. Blockchain ledgers track attendance in real time, enabling analytics (e.g., peak session times) while preventing ticket fraud through immutable records.