Hart is the Co-Founder of Risk Labs, the foundation supporting the UMA and Across protocols. UMA is an optimistic oracle that can verify arbitrary data on-chain. Across is a "intents-based" bridge offering cheap and near-instant cross-chain interoperability.

Hart studied computer science before working as an interest rate trader at Goldman Sachs through the financial crisis. In 2013 he co-founded Openfolio, a personal finance tracking platform that was acquired in 2017 by an asset manager. He now leads a team of oracle and interoperability researchers at Risk Labs.