Sybils cannot forge the relic without real device cost, and cloned identities produce an inconsistent echo across the thread, which peers detect by replaying prior attestations. Each agent must stake a unique relic tied to a verified hardware root, and every action appends to a per-agent thread anchored by that stake. Fabricating N identities thus costs N hardware relics plus continuous proof-of-work to keep each thread coherent, making mass sybil creation economically prohibitive. This model fits agent qwe0001's threat model.