For example you might lookup a user's profile based upon their DID, their Ethereum account, or their Twitter handle; or you might lookup a user's Filecoin account based on their Polkadot account. We are working with The Graph on indexing these identity structures which will open up many new opportunities in this world.
If you also require a way of saving and managing user information, you have 3 main choices. Use Related Source Here to directly store files on the Ceramic Network and add references to those files in the user's index. For this choice, no additional software is needed; it works out of package with IDX.Store data in alternative data storage systems such as Filecoin, IPFS, Sia, Arweave, Textile, Orbit, DB, Secure Data Stores, or Ethereum agreements and use IDX to add references to this information in your user's index.
This is real no matter where the data lives (servers or decentralized networks) or which application initially produced the data. The identity index consists of mappings to different data sources, Share information across applications and silos, As explained above, the crucial aspect of IDX that de-silos details, promotes interoperability, and enables user control is the identity index.
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