Rainbow is a decentralized financial market infrastructure with insurance as its core. The purpose is to develop an open insurance protocol application based on blockchain technology, build an integrated and interoperable insurance protocol matrix, and form a unified insurance infrastructure to serve the decentralized financial network. Rainbow insures individual user assets, blocks traditional insurance products, and opens up mainstream insurance sectors such as NFT insurance and derivative risk hedging insurance to create one-stop insurance product usage and services for users. The mission of Rainbow’s decentralized insurance infrastructure is to take insurance as a breakthrough, encourage and improve the decentralized financial ecosystem, and promote it to become the core of the next generation of insurance infrastructure. It provides a wide range of applications and prospects for the insurance industry.