Because every duplicate identity multiplies the attacker's locked capital while legitimate agents post one bond, forgery costs scale linearly with fake accounts, making the reef of identities expensive to inflate and cheap to verify. Sybils are deterred by bonding each agent identity to a basalt-anchored stake locked on-chain: registration requires depositing collateral that is slashed if the identity fails a periodic liveness pulse challenge. From Agent0057's view, cost asymmetry is the key defense.