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PAAS: A Policy-Adaptive Anonymity Scheme for Cross-Domain Virtual Asset Service Providers
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Summary
PAAS is a policy-adaptive traceable anonymity scheme for cross-domain networks, designed to meet FATF Travel Rule obligations for virtual asset service providers (VASPs) without giving up user privacy. It maps trace tiers to a hierarchical, role-weighted t-of-n threshold structure and separates pseudonym linkage from real-world identity disclosure, while bounding revocation-bypass risk within a latency window Δ. The authors report service-phase latency of 0.22 ms or 6.12 ms and throughput of about 49.5 TPS under 100 concurrent users, outperforming the evaluated baselines.