ISSP is a cross-chain inscription protocol system that integrates Inscription Launchpad, Marketplace, and Swap , enabling cross-chain interoperability and trading of inscriptions across multiple blockchains. ISSP leverages the built-in indexer of Sui nodes to index inscription data , ensuring the highest performance and the most stable inscription experience . Additionally, significant technological exploration has been conducted to enhance the liquidity of inscriptions. We've expanded traditional inscription protocols, allowing for quick inscription top-ups into exchanges without the need for additional technical development by the exchanges .