ISS utilizes blockchain technology to establish a decentralized global foreign exchange settlement system, introducing a gateway system to solve the trust problem of transfer and remittance between non acquaintances. The relationship between users and gateways (such as banks, third-party institutions, etc.) is reflected as a debt debt debt relationship throughout the entire system. This relationship is stored on several servers through distributed networks, and servers communicate through P2P to avoid a single The various risks brought by centralized servers and the use of certain encryption techniques to ensure data security....