As discussed in a prior MAP news report, in a blockchain system data are encrypted and pieces distributed across a network of computers running the system. Every change to the records is tracked across multiple computers in parallel. This means that errors which might enter the record on one local system will be compared against the wider network of records and corrected. The network tracking the changes does so with the encrypted records, without needing to know the contents. Any part of the system can call up any record, but will not be able to decode it. The owner of the individual record (typically assumed to be the patient) then provides access to any organisation with a need to access the record by providing them the means to decrypt it.
The Federal Ministry of Health (German: Bundesministerium für Gesundheit, BMG), is running a competition, offering prize money of up to 15,000 euros, for the best application concepts for blockchain technologies in the German health care system, including for (but not limited to):
- Medical registers
- Organ and tissue donor registry (for the legally binding documentation of declarations of intent regarding post mortem donation readiness)
- Declaration of consent (e.g. for research projects)
- Rights and identity management.
The ideas will be evaluated by an independent panel of experts for relevance, added value, future viability, interoperability and (data) security.