did:cheqd

The cheqd DID Method (did:cheqd) is a decentralized identifier implementation built on the Cosmos blockchain framework. This method provides a self-sovereign identity infrastructure that combines the privacy-preserving features of Hyperledger Indy with the robust token economics and scalability of Cosmos.

Key characteristics:

• Built on a public permissionless network unlike Hyperledger Indy's permissioned approach
• Supports both UUID-style and Indy-compatible identifier formats
• Implements full W3C DID Core specification compliance
• Integrates with DID-Linked Resources for credential schemas and definitions
• Features native token functionality for identity transactions

The method uses an optional namespace structure (did:cheqd:[namespace]:uniqueID) where namespace can specify different network environments (e.g., mainnet, testnet). The unique identifier can be either a UUID or an Indy-style base58 encoded value derived from public keys.

Technical Architecture:

1. DID Generation & Structure:

• Format: did:cheqd:[namespace]:<unique-id>
• Supports both UUID and Indy-style identifiers
• Optional namespace component for network specification

2. Resolution Process:

• Uses Cosmos SDK and Tendermint consensus
• Returns W3C-compliant DID Documents with metadata
• Supports standard DID operations (Create, Read, Update, Deactivate)

3. Key Management:

• Separates identity layer keys from network layer keys
• Supports multiple verification methods
• Implements Ed25519 and JsonWebKey2020 key types

4. Security Features:

• Multi-signature support for DID operations
• Controller-based authorization model
• Privacy-preserving key separation architecture

5. Technology Stack:

• Built on Cosmos SDK
• Uses Protobuf for on-ledger data representation
• Implements Tendermint BFT consensus
• Compatible with Hyperledger Aries frameworks

The method differentiates itself through:

• Dual identifier support (UUID and Indy-style)
• Native token economics
• Public permissionless architecture
• Full W3C compliance
• Resource-linking capabilities