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IEEE/ICACT20260343 Slide.18        [Big Slide]       [YouTube]	Oral Presentation
	Now I will focus on identity. We use W3C Decentralized Identifiers as the identity foundation. The control plane maintains DID documents and public keys over a consortium-controlled registry or ledger, while the data plane uses cached verified key digests and validates lightweight credentials—such as JWT-like credentials carried in requests—so that we avoid expensive per-request identity resolution on the fast path. Enrollment is controlled by a domain authority: it issues or endorses the DID document and records it in the domain registry. Key rotation and revocation are supported by updating the DID document or adding a revocation entry. We also include cold-start protection: newly enrolled entities start at a neutral credit level and face conservative rate limits until sufficient observations accumulate, limiting abuse. So the takeaway is: DIDs let us maintain long-lived accountability without relying on centralized identity authorities, while keeping fast-path verification lightweight.

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