Developed by Messari, the OpenSea Subgraph is a decentralized and verifiable data source for tracking and querying the Seaport marketplace protocol events on the Ethereum Blockchain.  Opensea Subgraph utilizes the Graph Protocol to extract raw blockchain data and transform it into useful metrics for effective analytics. Developers can easily retrieve data on orders, assets, and transactions that are executed on the Seaport marketplace using a unified GraphQL API endpoint.