Clear DefinitionsUniversal DID
1 min read
Pronunciation
[yoo-nuh-vur-suhl dee-eye-dee]
Analogy
Like a global passport number recognized by all countries without needing multiple IDs.
Definition
A Decentralized Identifier standard capable of representing any entity—person, organization, device—across multiple networks to enable interoperable identity.
Key Points Intro
Universal DIDs unify identity management across platforms and blockchains.
Key Points
DID methods: supports multiple networks (Ethereum, Sovrin, etc.)
Resolution: uses decentralized resolvers to fetch DID Documents
Key rotation: enables updating cryptographic keys securely
Interoperability: standard schema for credentials and proofs
Example
A user creates a `did:peer:` for peer-to-peer apps and later anchors the same DID on Ethereum (`did:ethr:`), enabling cross-platform authentication.
Technical Deep Dive
DID Core defines a JSON-LD DID Document containing public keys, service endpoints, and authentication methods. Method-specific drivers implement `create`, `read`, `update`, `deactivate` operations. DIDComm protocols enable secure messaging between DID subjects.
Security Warning
Compromised private keys can undermine all linked DIDs, risking identity theft.
Caveat
Interoperability depends on widespread adoption of DID methods and resolver infrastructure.
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