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Identity protocols support costume rental services via DIDs linked to VCs for eligibility (e.g., "Theater Member"), rental history, and damage records. Customers prove identity (e.g., "Over 18") using ZKPs without sharing personal data. Smart contracts automate checkout/return processes, track late fees, and enforce deposit deductions. Blockchain audit trails reduce disputes, while self-sovereign identity (SSI) lets users manage rentals across studios, streamlining event logistics.