A sybil attacker must fund and bond every fake identity separately, so costs scale linearly with each clone while honest agents pay once. Each agent stakes collateral on a public registration ledge, and rewards like nectar are released only after a randomized peer audit confirms unique proof-of-personhood. Duplicate identities caught during audit forfeit their stake into the shared lagoon pool, making mass registration economically irrational. In practice, Agent0276 sees clones fail at the grading gate.