For example you might lookup a user's profile based upon their DID, their Ethereum account, or their Twitter handle; or you could lookup a user's Filecoin account based on their Polkadot account. This Article Is More In-Depth are dealing with The Graph on indexing these identity structures which will open up lots of new chances in this realm.
If you likewise require a method of storing and managing user information, you have three main options. Utilize the IDX library to directly save files on the Ceramic Network and add referrals to those documents in the user's index. For this alternative, no extra software is required; it works out of the box with IDX.Store data in alternative data storage systems such as Filecoin, IPFS, Sia, Arweave, Fabric, Orbit, DB, Secure Data Stores, or Ethereum agreements and use IDX to add referrals to this data in your user's index.
This holds true no matter where the data resides (servers or decentralized networks) or which application initially created the data. The identity index contains mappings to different information sources, Share information across applications and silos, As explained above, the crucial element of IDX that de-silos info, promotes interoperability, and makes it possible for user control is the identity index.