Samourai Wallet co-founder Keonne Rodriguez received the maximum sentence of five years in federal prison for operating an unlicensed Bitcoin mixing service that prosecutors said laundered more than $200 million in illicit funds. Judge Denise Cote of the Southern District of New York also imposed a $250,000 fine, underscoring the court’s view that the service was designed to obfuscate blockchain transaction trails and enable crypto crime tied to darknet markets, hacks, and fraud schemes.