This curriculum spans the technical, operational, and governance dimensions of deploying blockchain-based digital identity systems, comparable in scope to a multi-phase enterprise architecture engagement involving identity infrastructure redesign, cross-system integration, and ongoing compliance operations.
Module 1: Foundations of Decentralized Identity Architecture
- Select between DID methods based on ledger stability, governance model, and resolution performance for enterprise integration.
- Design DID document structures that support key rotation, service endpoints, and verifiable credential exchange.
- Implement decentralized public key infrastructure (DPKI) to eliminate reliance on centralized certificate authorities.
- Evaluate the operational burden of maintaining DID anchoring across multiple blockchain networks.
- Integrate DID resolvers with existing identity providers while preserving user control over identifiers.
- Define lifecycle management policies for DIDs, including creation, recovery, and deactivation.
- Assess trade-offs between on-ledger and off-ledger storage of DID metadata for compliance and latency.
Module 2: Verifiable Credentials and Claims Lifecycle
- Structure credential schemas to balance reusability across use cases with issuer-specific validation requirements.
- Implement selective disclosure mechanisms using zero-knowledge proofs for privacy-preserving verification.
- Configure expiration, revocation, and status checking mechanisms using credential registries or status lists.
- Design credential issuance workflows that integrate with legacy HR, certification, or KYC systems.
- Enforce issuer authorization policies to prevent unauthorized credential minting in multi-tenant environments.
- Standardize credential formats using W3C VC data models while accommodating industry-specific extensions.
- Manage cryptographic key storage for issuers using hardware security modules (HSMs) or secure enclaves.
Module 3: Identity Wallets and User Agent Design
- Select wallet architecture (cloud, device-bound, hybrid) based on security, availability, and recovery needs.
- Implement secure key derivation and storage using BIP-32/44 standards with biometric or PIN-based access controls.
- Design user consent flows for credential sharing that comply with data minimization principles.
- Integrate wallet recovery mechanisms that balance security with usability, such as social recovery or backup phrases.
- Enable cross-device synchronization of credentials while preventing replay and cloning attacks.
- Support multiple DID types and credential formats within a single wallet interface for interoperability.
- Implement background notification and credential push mechanisms without compromising device security.
Module 4: Interoperability and Standards Integration
- Map existing SAML/OAuth claims to verifiable credentials for hybrid identity environments.
- Implement OpenID for Verifiable Credential Issuance (OID4VCI) for standardized credential delivery.
- Integrate with national digital identity frameworks that support blockchain-based credentials.
- Adapt to evolving standards from W3C, DIF, and GSMA while maintaining backward compatibility.
- Develop adapters for cross-chain credential validation when issuers use different ledgers.
- Use semantic ontologies to ensure consistent interpretation of credential claims across domains.
- Validate conformance to ecosystem-specific trust registries such as the European Blockchain Services Infrastructure (EBSI).
Module 5: Governance and Trust Frameworks
- Establish governance policies for trust anchor registration and revocation in permissioned ecosystems.
- Define roles and responsibilities for issuers, verifiers, and wallet providers in legal agreements.
- Implement decentralized identifier registries to track authorized participants in a network.
- Design dispute resolution mechanisms for fraudulent or revoked credential usage.
- Enforce compliance with eIDAS, GDPR, or CCPA through technical and procedural controls.
- Operate or join a trust federation with auditable policies for participant onboarding and oversight.
- Balance decentralization goals with regulatory requirements for identity verification and audit trails.
Module 6: Security, Privacy, and Threat Mitigation
- Conduct threat modeling for identity wallets to mitigate phishing, malware, and device compromise.
- Implement rate limiting and fraud detection for high-volume credential verification endpoints.
- Use decentralized storage with encryption for off-chain credential data to prevent linkage attacks.
- Enforce multi-factor authentication for high-risk operations like key recovery or DID transfer.
- Prevent Sybil attacks by requiring trusted attestations during issuer or verifier registration.
- Monitor blockchain transactions for suspicious DID creation or anchoring patterns.
- Apply privacy-by-design principles to minimize personal data exposure in credential schemas.
Module 7: Enterprise Integration and System Orchestration
- Embed verifiable credential verification into existing access control systems for physical and digital resources.
- Orchestrate identity workflows across cloud IAM, on-premise directories, and blockchain layers.
- Implement caching and indexing strategies for DID resolution to meet enterprise SLAs.
- Integrate with SIEM systems to log credential verification events for audit and compliance.
- Design fallback mechanisms for identity verification during blockchain node outages.
- Scale wallet backend services to support thousands of concurrent credential issuance requests.
- Use API gateways to expose credential verification as a managed service to internal applications.
Module 8: Regulatory Compliance and Auditability
- Map credential issuance processes to KYC, AML, and eIDAS regulatory requirements.
- Generate machine-readable audit trails for credential lifecycle events across distributed systems.
- Implement data retention and deletion workflows that align with GDPR right-to-be-forgotten obligations.
- Preserve cryptographic proofs of verification events for regulatory inspection without storing PII.
- Conduct third-party audits of issuer trust frameworks and technical implementations.
- Document data flows and controller responsibilities for cross-border credential exchange.
- Support supervisory authority access to trust registry data under legal mandate without compromising privacy.
Module 9: Production Operations and Lifecycle Management
- Monitor DID resolution latency and failure rates across global resolver networks.
- Automate rotation of signing keys for high-assurance issuers using policy-driven workflows.
- Manage software updates for wallet clients with rollback capabilities and integrity checks.
- Implement disaster recovery plans for critical identity services with blockchain failover.
- Track credential revocation list (CRL) distribution performance and availability.
- Optimize gas costs and transaction batching for high-volume DID anchoring operations.
- Conduct regular penetration testing and red team exercises on identity infrastructure components.