The fall of Sam Bankman-Fried didn’t just topple a $32 billion cryptocurrency exchange in FTX—it also threatened to undo the fabric of decentralized finance on the crypto wunderkind’s blockchain of choice, Solana. Serum, founded in August 2020 by a consortium that included the Solana Foundation and Bankman-Fried’s FTX and trading desk Alameda Research, was a core decentralized exchange platform and liquidity provider for the burgeoning Solana DeFi ecosystem. Its order book was crucial for DeF...