did:cosmos

The did:cosmos method is a specialized Decentralized Identifier implementation designed for assets on Cosmos-compatible blockchains. As an Interchain Identifier (IID), it focuses specifically on identifying and managing on-chain assets like NFTs, fungible tokens, and other blockchain-native components.

This method enables secure reference to digital assets across the Cosmos ecosystem while providing privacy-preserving mechanisms for linking additional resources and metadata. Unlike some DID methods, did:cosmos is specifically designed for asset identification rather than personal identity management.

Key features include:

• Blockchain-Specific Routing through the Cosmos Chain Registry
• Privacy-Preserving Resource Linking via hashgraphs and secure references
• Flexible Asset Module Support for different token types
• Cross-Chain Compatibility within the Cosmos ecosystem
• Standardized Rights Management through executable and accorded rights

The architecture requires three core components:

• Chain Registry for blockchain routing
• Namespace Registry for module management
• Asset Modules for specific token handling

Technical Implementation:

1. DID Structure:

• Format: did:cosmos:[version]:[chainspace]:[namespace]:[unique-id]
• Example: did:cosmos:1:ixo:nft:7Tqg6BwSSWapxgUDm9KKgg

2. Key Security Features:

• Uses Secp256k1 cryptography
• Supports multiple verification methods
• Implements capability delegation
• Provides linked resource privacy controls

3. Core Operations:

• Create: Asset module registration with unique identifiers
• Read: Multi-step resolution through registries
• Update: Controller-authorized document modifications
• Deactivate: Permanent state change marking as inactive

4. Technical Standards:

• Compliant with W3C DID Core
• Implements JSON-LD contexts
• Supports Multibase encoding
• Uses gRPC for communications

The method leverages the Cosmos SDK's proven security model while adding specialized features for asset identification and management.