Federal authorities charged Jacksonville brothers Vladislav Chernyshov, 35, and Stanislav Chernyshov, 30, with allegedly distributing nitazene-laced counterfeit pills through darknet markets under the vendor name BarbaraWhite. Investigators say the account operated on Nemesis, Bohemia and Abacus and was linked to sales exceeding 95,000 pills marketed partly as fentanyl-free. Blockchain analysis traced approximately $220,000 received and $230,000 sent by associated wallets, including about $7,210 paid to a China-based chemical supplier. Authorities combined transaction data with postal records, undercover purchases, surveillance, mobile-payment information and marketplace records to identify the alleged operators. BarbaraWhite shipments were linked to at least 12 overdoses across the United States, including three deaths. The brothers were arrested on Aug. 28, and the U.S. Attorney’s Office for the Eastern District of Virginia announced the case on Sept. 2. Prosecutors said each defendant faces at least 20 years in prison if convicted; both remain presumed innocent.