The Federated Marketplace for Health Data Exchange
HDX enables data providers to monetize existing medical records while giving clinicians, payers, and researchers instant access to verified patient data — all without centralizing protected health information.
Redundant testing costs the U.S. healthcare system over $200 billion annually.
Patients repeat lab work, imaging studies, and diagnostic procedures because their existing results are locked in siloed EHR systems that cannot communicate across organizational boundaries. The data exists — it simply can't be found or accessed.
Meanwhile, data providers have no way to monetize the records they've already produced. Buyers have no single marketplace to discover and access verified patient data.
HDX changes this.
Built on two breakthrough technologies
PersonaLink — Identity Resolution Engine
Maps fragmented patient identities across siloed healthcare systems to a single real person — without ever storing or exposing protected health information. Uses cryptographic hashing and privacy-preserving comparison inside a zero-knowledge security boundary. Patent pending.
HDXT Exchange — Blockchain-Settled Marketplace
Brokers buyer-to-provider connections with sub-second settlement in USDC on Solana. Every transaction creates an immutable, on-chain access grant that providers can verify independently. PHI never touches the exchange — buyers connect directly to providers for data access.
Four markets, one platform
Data Providers
Laboratories, hospitals, and diagnostic facilities register and monetize existing records on the exchange. Automated royalty distribution via smart contracts creates a new revenue stream from data already produced.
Healthcare Providers
Clinicians search for a patient's external records directly from their EHR. Our SMART on FHIR integration with Oracle Health lets physicians discover, access, and view records without leaving their clinical workflow.
Payers
Insurance companies submit policyholder lists for bulk discovery and retrieval of medical records. Evidence-based underwriting, risk optimization, and claims validation — at scale.
Researchers
Request anonymized cohorts for clinical studies without patient contact. The platform enforces de-identification at the provider level, enabling HIPAA-compliant research access to large, diverse datasets.
Three steps. Zero PHI exposure.
1. Discover
Submit patient demographics. PersonaLink resolves identity across providers using cryptographic matching. Available records are returned with data category and pricing — no PHI exposed.
2. Settle
Purchase access. Payment settles in USDC on Solana in under one second at less than $0.01 per transaction. An immutable access grant is written to the blockchain.
3. Access
Connect directly to the provider's FHIR R4 endpoint. The provider verifies the on-chain grant and serves the data. HDX never touches the medical record.
A new category in health data infrastructure
Existing solutions either centralize data, lock data inside a single EHR ecosystem, or focus exclusively on payer interoperability. HDX is the first platform to combine privacy-preserving identity resolution, decentralized blockchain settlement, and a true secondary marketplace for medical records.
Centralized linkage platforms
HDX is decentralized; PHI never centralized
EHR-captive solutions
HDX is EHR-agnostic; works across any FHIR R4 system
Payer-only interoperability
HDX serves providers, payers, clinicians, and researchers
No blockchain audit trail
HDX provides immutable, tamper-proof transaction records
Ready to explore what's possible?
Whether you're a lab looking to monetize existing records, a health system seeking interoperability, or a payer optimizing risk — we'd like to hear from you.