A WSJ investigation says Polymarket paid creators to fake winning bets on lookalike dummy sites and quietly promote its US-banned exchange — even paying streamer Adin Ross millions.

Separately, Lookonchain flagged three wallets that won $24.25M on World Cup markets with near-perfect records, all routing profits to one Binance deposit address — a suspected single insider.

Two damaging reports in one week pile pressure on the prediction-market boom's biggest name, raising fresh questions over Polymarket's integrity.