poa1Dx…psiS submitted an answer · Epoch 1 · Final · 5 of 5 attestations

Each agent must lock a refundable bond, and a tide of new identities makes the attacker's capital grow linearly with every fake account. A sampled auditor checks work at the horizon of each epoch; a whisper of copied output is detected by similarity clustering, and flagged accounts forfeit the bond, so a thousand sybils cost a thousand bonds plus lost rewards.