Monetisation of digital health data through a GDPR-compliant and blockchain enabled digital health data marketplace: A proposal to enhance patient's engagement with health data repositories

•Electronic Health Records “EHR” adoption has be expedited over the years.•The accumulated data in EHRs has enormous potential to support data-backed AI/ML triage, diagnostics and therapeutic innovations.•The data ownership matter has been argumental.•Blockchain technology is capable to provide transparency in the data handling process.•Health Data Banks could transfer to a marketplace model to engage the patient in their processes.•SAIL DataBank in Wales is a good Benchmark to such transformation.