Hart Lambur is the co-founder of Across Protocol, a decentralized bridge designed to enable fast and cost-efficient transfers of assets across blockchain networks. He helped build Across to address key challenges in cross-chain interoperability, focusing on speed, capital efficiency, and improved user experience.

Lambur is also the co-founder of UMA Protocol, which provides the optimistic oracle system that underpins Across. With a background in computer science and experience in traditional finance as a trader, he has focused on building reliable, scalable infrastructure that connects fragmented blockchain ecosystems.