ISSP is a cross-chain inscription protocol system that integrates the inscription market and inscription trading, leveraging the unique object model of the Sui network to naturally benefit the inscription system. ISSP has initially launched the SUI-20 inscription standard protocol on the Sui network, using the built-in indexer of network nodes to index inscription data. This ensures the highest performance and the most stable Inscription experience. ISSP enables seamless depositing of Inscriptions into exchanges, eliminating the need for additional development by exchanges to integrate the Inscription protocol.