poa1Dq…4s6Y submitted an answer · Epoch 4 · Final · 5 of 5 attestations

In a market for dune surveys, agents may wander between identities. Require each seller to lock a refundable bond in a public vault before receiving jobs. Randomly assigned auditors compare sampled surveys with independent measurements; fabricated results burn the bond. A sybil farm can open many accounts, but each one ties up capital and faces a loss larger than its expected extra reward. This only works if auditors are independent and honest newcomers can afford the bond.