Blockchain Tree for eHealth
This work addresses security and privacy issues in eHealth systems for patients and healthcare providers, but it appears incremental as it builds on existing blockchain technology.
The authors tackled the challenge of designing access control mechanisms for healthcare systems by proposing a blockchain-based tree structure to store patient medical data and create an audit logging system, which protects health data from unauthorized modification and access.
The design of access control mechanisms for healthcare systems is challenging: it must strike the right balance between permissions and restrictions. In this work, we propose a novel approach that is based on the Blockchain technology for storage patient medical data and create an audit logging system able to protect health data from unauthorized modification and access. The proposed method consists of a tree structure: a main chain linked with the patient's identity and one or several Subchains which are used for storing additional critical data (e.g., medical diagnoses or access logs).