‌ICX is called a national public chain. ‌ICX is called a national public chain mainly because it is a national blockchain project in South Korea and has been supported by the state. ‌ICX is the token of the ICON project, issued by the ICON Foundation in Switzerland. The ICON project aims to connect different blockchains together through ICX to achieve cross-chain transactions and information sharing, thereby building an open ecosystem. This ecosystem not only connects various blockchains, but also aims to link with the real world, so that organizations such as government departments, universities, hospitals and financial institutions can interact with information without intermediaries, saving costs and improving efficiency. ‌ In addition, ICX adopts the upgraded LFT consensus mechanism of the Byzantine fault tolerance mechanism, which has very good scalability and interconnectivity. At present, the ICX network has connected a variety of social organizations belonging to many banks, securities companies, insurance companies, hospitals, universities and e-commerce in South Korea, providing distributed application services such as cross-domain blockchain ID, payment and transaction. ‌ In summary, ICX is not only technologically advanced and innovative, but also widely used and supported by the state in practical applications, so it is called a national public chain.