Consent management as a blockchain use case
Consent receipts, revocation mechanics, and the governance of authorisation state across institutional boundaries.
What this use case covers
Consent management projects in the directory are those whose primary ledger-backed component is the management of patient or participant consent across data uses and institutional boundaries. The category includes consent receipts, revocation tracking, consent dashboards, and authorisation state management.
What a credible consent model has
A credible consent design separates the authorisation (the patient's approval), the scope (what data, which purposes, which parties, for how long), the revocation path (how the authorisation is withdrawn and what that implies for existing copies), and the audit log (what was actually done). Consent designs that collapse those elements into a single signature look rigorous and tend not to survive a regulator's questions.
Revocation and its limits
Revocation mechanics on a ledger can be made immediate and inspectable. The ledger records the change in consent state. What happens to copies of the data already released is a governance and contractual question, not a ledger question. Projects that represent revocation as complete without addressing the already-released-data question are overstating what the technology provides.
Consent dashboards
A consent dashboard is a surface that interprets ledger state for the patient. It is only as useful as it is understandable. The credible designs aggregate authorisations into recognisable categories, make revocation immediately actionable, and provide granular detail on demand rather than by default. The dashboard that a patient cannot navigate is a transparency claim without substance.
Directory posture
Consent management is one of the more tractable use cases in the field. Confidence labels reflect the clarity of the scope design, the seriousness of the revocation handling, the usability of the patient-facing surface, and the engagement with the relevant privacy framework. Inclusion is not endorsement.