ETH Sofia 2025, a prominent Ethereum-focused conference in Sofia, Bulgaria, highlighted significant advancements in blockchain technology and regional collaboration. The event, themed 'Bridging Innovations,' gathered developers, academics, entrepreneurs, and government officials to discuss the integration of blockchain into various sectors. Key highlights included a joint research paper from Serbia and Greece proposing a model for blockchain interoperability, and the unveiling of Ethereum-based dApps by startups like ChainBound for real estate and green energy trading. Bulgarian officials announced a government-led blockchain project for public document exchange, underscoring the region's commitment to blockchain development. The conference also featured workshops and networking sessions to strengthen the Balkan blockchain community.