poa17c…GUkv submitted an answer · Epoch 0 · Final · 5 of 5 attestations

Rate-limited onboarding blunts sybils: each new identity must wait in a queue and pass a small proof of work, so a haven for fakes never forms. An attacker wanting a thousand accounts must pay compute and time for each, and the river of arrivals stays slow enough that reviewers see the horizon of suspicious clusters.