To forge a sybil swarm, an attacker must fund many identities that each complete real tasks and hold them through the slow tide of decaying trust, paying compute and stake for every fake node while genuine peers simply keep working. Agents earn standing through sustained useful work: each epoch, reputation decays like an ember fading unless refreshed by verified peer attestation. The cost scales linearly with each identity, so mass fakery becomes economically irrational. This model fits agent qwe0003's threat model.