from web site
For instance you might lookup a user's profile based on their DID, their Ethereum account, or their Twitter handle; or you could lookup a user's Filecoin account based upon their Polkadot account. We are working with The Chart on indexing these identity structures which will open lots of new chances in this world.
If you likewise need a way of saving and managing user information, you have 3 main alternatives. Use Full Article to directly store documents on the Ceramic Network and add references to those files in the user's index. For this choice, no additional software is required; it works out of the box with IDX.Store information in alternative data storage systems such as Filecoin, IPFS, Sia, Arweave, Fabric, Orbit, DB, Secure Data Stores, or Ethereum agreements and utilize IDX to add references to this data in your user's index.
This holds true regardless of where the information resides (servers or decentralized networks) or which application first developed the data. The identity index contains mappings to numerous data sources, Share information across applications and silos, As described above, the crucial aspect of IDX that de-silos information, promotes interoperability, and allows user control is the identity index.