WIOT (World Internet of Things) was born through in-depth research and analysis of existing blockchain technology and the underlying chain for the Internet of Things. By identifying issues within traditional blockchain scenarios that are unsuitable for the IoT, WIOT proposes a series of solutions. WIOT is built upon the HashGraph architecture, supporting both a main chain and customizable sub-chains. It also includes a lower-level IoT blockchain system ecosystem consisting of programming languages, virtual machines, and smart contracts, aiming to address the challenges of applying blockchain within the IoT ecosystem.