HOTCS is a large-scale health-focused smart ecosystem blockchain designed to leverage blockchain technology for recording personal health data, creating individual health records, and developing secure and controllable health applications. HOTCS aims to combine personal health data with healthcare diagnostic data and transform them into digital assets through blockchain technology. It ensures the security, privacy, accuracy, and scalability of personal health data via encryption techniques. By fully utilizing smart contracts, it creates NFTs (Non-Fungible Tokens) of personal health data, building an integrated digital health ecosystem maintained collaboratively by individuals, medical institutions, AI companies, insurers, and more. This ensures that participants personal health data is safer, more reasonable, and accurately applied in healthcare provisions, driving the development of the health and medical industry and amplifying its value.