HEALTHCARE
TEFCA and Blockchain Patient Record Sharing — TEFCA (Trusted Exchange Framework and Common Agreement) is the US federal framework for nationwide health data exchange. Blockchain-based patient consent and record sharing aligns with TEFCA's trust model.
TEFCA's trust challenge: multiple unrelated organizations sharing sensitive patient data requires a trust framework. Where blockchain fits: blockchain provides an immutable, auditable consent management layer — recording exactly when a patient authorized which provider to access which data. This consent record is tampe...
The ONC (Office of the National Coordinator for Health Information Technology) launched TEFCA in January 2022 to enable nationwide health information exchange. TEFCA designates 'Qualified Health Information Networks' (QHINs) as trusted intermediaries.
Common integrations: The Graph, Alchemy/Infura, OpenZeppelin Defender, and popular wallet providers.
Clarify requirements, compliance needs, architecture risks, and launch goals.
Implement core contracts, integrations, product flows, tests, and deployment automation.
Run QA, prepare audit handoff, deploy infrastructure, and support production rollout.
No — TEFCA does not require blockchain. It defines interoperability standards (using HL7 FHIR and XCA protocols) and governance requirements. Blockchain is one implementation approach for the trust and consent management layer. Some QHIN implementations are exploring blockchain-based consent registers; most currently use traditional centralized databases.
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