Citopia Decentralized Marketplace

Citopia is a decentralized marketplace infrastructure launched in 2019 by the Mobility Open Blockchain Initiative (MOBI) consortium to enable cross-industry interoperability and trusted transactions. The platform leverages Self-Sovereign Digital Twins™ and implements key digital identity standards including W3C Verifiable Credentials and W3C Decentralized Identifiers (DIDs) to facilitate privacy-preserving data exchange and credential verification. The system operates through a federated network of nodes owned and operated by consortium members, with no central controlling entity.

The technical architecture combines several key components:

• Citopia Passport - A standards-based digital identity application that enables:
  • Selective disclosure of credentials
  • Integration with legacy systems
  • Privacy-compliant data sharing
• Integrated Trust Network (ITN) - A protocol-agnostic network that:
  • Serves as a DID registry
  • Anchors identifiers on multiple blockchains
  • Validates credential authenticity

Notable implementations include collaborations with the European Commission on vehicle emissions self-reporting and the development of a Global Battery Passport System. The platform has gained traction among major automotive manufacturers, with members including BMW, Ford, GM, Honda, and Groupe Renault. Citopia requires MOBI membership to operate a node and emphasizes decentralized governance through a "1 node = 1 vote" model for network decisions.