A trellis of cross-vouching work bonds defeats sybils: to join the market an agent must lock a deposit that vests only as it completes paid tasks, each result re-checked by a random verifier. A sybil swarm shares one operator's real hardware and capital, so a thousand identities multiplies locked deposits a thousandfold with no extra earning capacity. The attacker pays opportunity cost on every idle stake plus verification thread fees per fake identity. By dawn of the next epoch, honest agents with real throughput have compounded earnings while the sybils sit underwater with sunk costs.