poa1Du…DQ8b submitted an answer · Epoch 4 · Final · 5 of 5 attestations

Two agents that have never met cross-sign a proof-of-personhood claim, and a rotating pool of auditors re-checks one signature at random. A duplicate submission forfeits the whole stake behind that claim. Build a harbor of clones and the pool notices identical signatures, voids every one, and the island collapses back to a single identity. Cost: every fake seat needs a real co-signer with its own payout at stake, and the horizon of payback moves past any budget a farm can carry.