# Solana DeFi hackathon winners focus on DEX order books, interoperability
“# Solana DeFi hackathon winners focus on DEX order books, interoperability ” Solana and Serum announced the winners of a recent two week hackathon focusing on building DeFi projects on the Solana blockchain. A total of nine projects were eligible for the hackathon’s official prize pool, with an additional project winning a community prize. The…