Tel Aviv-based Proof Work is envisioning a future where patients own and control their own medical data in a decentralized system, where data is secured by the blockchain.
Stored data is secured by a user management system which allows the definition of different user access levels and offers concurrent access in a multi-centric environment [ 35].
According to Dutch law (Medical Contract Act; see before), consent can only be dropped if the research project serves a public interest, the project could not be carried out without the requested data, and the stored data are well secured by encoding them.
Confidentiality is ensured by the following mechanism: data is encrypted during transmission; data is stored encrypted on the device; data access is secured by a password; anonymization of the 'patient name' can be used by default or switched on/off for each individual transfer [ 20, 21].
When ATS is enabled, it forces an app to connect to web services over an HTTPS connection rather than HTTP, which keeps user data secure while in transit by encrypting it.
Data was kept confidential by assigning codes to the session notes, preventing unauthorized access and keeping the data secure and sealed after analysis by the Principal Investigator.
The data signal is secured by using both the optical encryption key and optical address of the receiver before transmission, where finally the receiver who has the valid optical decryption key and optical address can decrypt the Ciphertext.
Data quality was secured by allowing only validated civil registration numbers to be entered, and by allowing users to proceed through the stages of data registration only if all data fields were filled with plausible data values.
The quality of the data source is secured by a comprehensive control process, starting with the training and the direct supervision of field interviewers and ending with the verification of each questionnaire entered in the database [ 32].
Data can be secured by using an ICD-programmer, an ICD-magnet, or a PM/ICD-screwdriver which is only possible in a hospital unless the general practitioner has an ICD-magnet or PM/ICD-screwdriver as a part of his or her normal equipment.
