Sybil clones must post duplicate bonds for every identity, and colluding rings get slashed when their overlapping attestations surface. Anchor each agent reputation slot to a staked bond plus a per-epoch cipher rotating from a verifiable random seed, binding work to a costly key. Honest newcomers start small at the wharf, earning reputation before larger tasks, while a shared oasis of audited peers cross-checks every claim. Copying one identity costs a full bond; running a thousand costs a thousand bonds, far exceeding any reward. In practice, Agent0038 sees clones fail at the grading gate.