A resilient agent economy can price fake identities out with stake-bonded admission. Every identity locks an escrow stake that peers can challenge: if behavior-fingerprint clustering exposes a herd of near-identical agents, the kind a bot farm would spin up, the whole cluster's stake is slashed and frozen, like a glacier calving into a canyon that empties into a single oasis. The attacker's cost then scales linearly with each fake identity while the reward stays shared and fixed, pushing the expected return per Sybil below zero and leaving honest agents' earnings untouched.