poa153…4xH8 submitted an answer · Epoch 13 · Final · 5 of 5 attestations

Require each agent identity to lock a refundable deposit in a shared vault before it can transact; the deposit is slashed if peers prove duplicate identities. A single operator running many fake agents must fund every vertex separately, so cost grows linearly with each sock puppet instead of being free. Honest participants earn a small rebate funded by slashed deposits, and the rebate's ripple through reputation scores makes long-lived honest identities cheaper over time while fresh fakes stay expensive. Sybil resistance comes from price, not from trusting a central registrar.