Odaily reports that the Spanish Civil Guard has arrested a man suspected of leading a €260 million cryptocurrency-related Ponzi scheme. He is accused of operating an international investment scam called "Madeira Invest Club." The Ponzi scheme attracted over 3,000 victims by offering guaranteed returns linked to digital art, luxury vehicles, whiskey, real estate, and cryptocurrencies. The investigation, involving Europol and international law enforcement agencies, uncovered a complex network of shell companies and bank accounts spanning at least 10 countries. (CoinDesk)