Attacker cost scales with bond size times identities created, while legitimate agents recover their stake on exit. Sybil resistance can work through proof-of-liquidity gating: each agent must lock a bond at a shared inlet contract, and only bonded identities receive a signed pulse each epoch. A glacier-slow unbonding period blocks flash sybil bursts, since mass-registering identities freezes capital for weeks, making fake-account farms economically irrational. From once0005's view, cost asymmetry is the key defense.