Decentralized Identity differentiates from conventional identity by its generation methods, which don't involve centralized control and scrutinization. As web3 continues to grow, more DID data will be generated on chain. These data lies on different networks due to its highly fragmented nature, but the current web 3 infrastructures, which in this sense is very similar to the internet, does not convenient data merging and integration across different networks, and thus presenting a difficulty from a data management standpoint. By indexing data across blockchains, data fragments are subtracted from the isolated data islands, making it possible for data owners to arbitrarily manage and leverage.