IoT Chain, also known as IoT Chain or ITC, is a secure, lite operating system for the Internet of Things (IoT). It aims to address current IoT security and safety concerns by leveraging distributed ledger technology. Using a hybrid approach of blockchain, Practical Byzantine Fault Tolerance (PBFT), and blockless Directed Acyclic Graph (DAG) architecture, IoT Chain creates a decentralized IoT network with unparalleled speed and security, ensuring data sovereignty for users. The decentralized nature of the network allows users to maintain their data privacy while enabling the emergence of a data marketplace. By 2025, most electronics are expected to have smart technology, requiring an IoT operating system like IoT Chain. With its technology implemented at the chip level, IoT Chain aims to become the leading platform for IoT devices, providing manufacturers with easy access to a powerful IoT ecosystem. The ITC token serves as a carrier of value and ownership, facilitating transactions among intelligent devices. Users can obtain the right to use ITC-enabled devices by paying tokens, and the data generated by these devices can be purchased by others using ITC tokens. As more devices join the network, the demand for ITC tokens increases, driven by the need for transactions and access to additional data.