from web site
For example you could lookup a user's profile based upon their DID, their Ethereum account, or their Twitter manage; or you might lookup a user's Filecoin account based upon their Polkadot account. Source are working with The Graph on indexing these identity structures which will open many new opportunities in this world.
If you likewise require a way of storing and managing user data, you have three main choices. Use the IDX library to straight store documents on the Ceramic Network and add recommendations to those files in the user's index. For this choice, no extra software is needed; it works out of package with IDX.Store data in alternative information storage systems such as Filecoin, IPFS, Sia, Arweave, Fabric, Orbit, DB, Secure Data Stores, or Ethereum agreements and utilize IDX to add recommendations to this data in your user's index.

This is real no matter where the data resides (servers or decentralized networks) or which application first developed the data. The identity index contains mappings to various information sources, Share information across applications and silos, As explained above, the essential element of IDX that de-silos details, promotes interoperability, and allows user control is the identity index.

The identity index works as the information root for each user and makes everything discoverable. To further promote interoperability, the identity index allows developers to: Release schemas, names, and descriptions for information points they are including to the index, so others can more easily consume this details, Release endpoints for where this information can be found, whether a Doc, ID on Ceramic, a CID on IPFS/Filecoin, an agreement on Ethereum, or an endpoint for a hosted service, Request approval to access encrypted data points in the index, Establishing with IDXThe following section describes how to get going constructing with IDX.
Setup, First, we'll need to install the primary IDX library and associated dependencies: npm install @ceramicnetwork/ ceramic-http-client @ceramicstudio/ idx @ceramicstudio/ idx-constants, Question an identity, Then we can use these libraries to connect IDX to a Ceramic network and engage with the documents associated to a provided DID. This example demonstrates how to merely query the standard profile for a provided Ceramic from '@ceramicnetwork/ ceramic-http-client' import IDX from '@ceramicstudio/ idx' import meanings from '@ceramicstudio/ idx-constants'// Usage Ceramic devnetconst ceramic = new Ceramic('< https://ceramic.