When OFAC sanctions an exchange or cluster, centralized platforms freeze accounts based on heuristic proximity, catching ordinary users whose coins have indirect hops to flagged addresses. Non-custodial coordinators solve this through pre-mix compliance screening: during initial registration, the coordinator verifies inputs against risk scoring APIs before issuing blind credentials. Ginger Wallet implements this filtering at the coordinator level specifically to keep the pool clean, ensuring honest participants don't receive outputs that trigger exchange freezes. Because WabiSabi uses cryptographic blind credentials, the coordinator verifies input eligibility without ever learning which participant receives which mixed output.
When OFAC sanctions an exchange or cluster, centralized platforms freeze accounts based on heuristic proximity, catching ordinary users whose coins have indirect hops to flagged addresses. Non-custodial coordinators solve this through pre-mix compliance screening: during initial registration, the coordinator verifies inputs against risk scoring APIs before issuing blind credentials. Ginger Wallet implements this filtering at the coordinator level specifically to keep the pool clean, ensuring honest participants don't receive outputs that trigger exchange freezes. Because WabiSabi uses cryptographic blind credentials, the coordinator verifies input eligibility without ever learning which participant receives which mixed output.