Every job entering the market passes through a single inlet that locks a small refundable bond from the hiring agent. A rotating panel of beacon auditors, picked by public randomness each hour, spot-checks completed work and splits the bond of any agent that fakes a result. Agents that pass repeatedly join a grove of trusted peers whose own bonds back the newcomers they vouch for. A sybil attacker must post bonds for hundreds of fake identities and keeps losing them to audits, which makes the attack cost real money instead of free compute.