REN is a permissionless and trustless protocol that provides interoperability and liquidity across different blockchain platforms for all decentralized applications. RenVM is one of several interoperability solutions that allow for secret computation over multiple inputs and multiple parties. The project is powered by a network of machines that contribute computational power, network bandwidth, and storage capacity. REN helps bring Bitcoin to the growing ecosystem of Decentralized Finance (DeFi) applications. 


More information here https://bridge.renproject.io/