Blockchain-Enabled Citizen Data Vaults
A cryptographic framework granting individuals sovereign ownership of their personal data, enabling portable, privacy-preserving, and auditable data exchanges across institutions.
Reclaiming Data Autonomy
Modern data ecosystems concentrate personal information within opaque corporate silos. This initiative develops an open protocol where citizens maintain cryptographic keys to their data vaults, controlling access, retention, and monetization through verifiable smart contracts.
🔐 Core Philosophy
Data should follow the individual, not the platform. By anchoring vault pointers to blockchain identities and encrypting payloads client-side, we eliminate single points of failure. Institutions request access via signed consent tokens; users revoke instantly without intermediary approval.
🎯 Primary Objectives
• Establish verifiable data ownership using decentralized identifiers (DIDs)
• Enable cross-platform portability with standardized schema mapping
• Provide regulatory-compliant audit trails via immutable ledger receipts
• Maintain zero-knowledge verification for sensitive attributes (health, financial, biometric)
Protocol Stack
Identity & Auth Layer
Self-sovereign DIDs with hardware-wallet integration. Multi-sig recovery and biometric key derivation for seamless yet secure access.
Encrypted Storage
Data sharded and encrypted locally before upload. Redundant pinning across IPFS and Arweave with Merkle-tree integrity verification.
Consent Smart Contracts
Time-bound, revocable access tokens. Granular permission scopes (read, compute, anonymize) enforced on-chain without exposing raw data.
Zero-Knowledge Verification
zk-SNARK circuits validate compliance claims (age, residency, creditworthiness) without transmitting underlying records.
Interoperability Bridge
REST & GraphQL gateways translating vault schemas to institutional APIs. FHIR, OpenID, and GDPR export formats natively supported.
Audit & Compliance Engine
Immutable access logs with cryptographic signatures. Automated reporting for regulatory bodies while preserving user privacy boundaries.
Implementation Timeline
Developer Resources
Technical Whitepaper
Protocol architecture, threat model, and formal verification proofs (PDF)GitHub Repository
Source code, SDK examples, and contribution guidelinesAPI Documentation
REST endpoints, GraphQL schema, and webhook integrationsTestnet Sandbox
Interactive playground for vault creation and consent simulationCommon Inquiries
Keys are derived from biometric or hardware wallet seeds and stored encrypted locally. We implement a social recovery mechanism requiring 3-of-5 trusted contacts or institutional guardians to regenerate access without compromising vault contents.
No. It operates as a privacy-preserving overlay. Traditional IDs can be cryptographically attested and mapped to DIDs, allowing gradual migration without disrupting legacy infrastructure.
The protocol embeds GDPR, HIPAA, and CCPA requirements at the contract level. Audit trails are immutable, data residency can be enforced via geographically pinned storage nodes, and right-to-erasure is executed through cryptographic tombstone records.
Yes. Each vault entry carries a cryptographic signature and Merkle proof. Institutions can verify integrity and consent status without accessing raw payloads, and zk-proofs enable selective disclosure for compliance checks.