An open source, decentralized and
government backed protocol for registering
and communicating digital permissions

BUIDL an open-source, decentralized and Government-backed protocol to enable everyone to become fully responsible for their own digital permissions, from accepting cookies to approving invoices. The solution you create with the Ministry of Justice and Security could be a crucial building block for usage in e-commerce, medical systems, and many other sectors.


Becoming fully responsible for your own digital permissions, from accepting cookies to approving invoices to consent of usage of your medical data, is not without its dangers. The protocol to be built by the teams should be a permissionless ledger with specific entry conditions, so every participant or interface is compliant at the protocol level.

This protocol could be a crucial building block for e-commerce, medical systems and many other uses. It is fully open source for building, for instance to build your own interface to manage a set of keys, but the protocol itself is owned by either everyone or no-one.

This challenge forces us to go back to the meaning and concepts behind permissions. What does it mean to give permission? A carefully designed protocol should incorporate elements from the legal concepts as identified by Hohfeld (1918). It should secure the authenticity and integrity of requests and approvals. It should register the exact information position of the request on the basis of which the approver will give his response. It should support uniformity and familiarity for every user in order to have maximum trust from the public.

The protocol should be able to inform the approver of the context of the request, the apparent risks involved and any relevant future consequences with regard to their chosen response, so that decision-making is fully informed. In combination with linked data the protocol could even be a forerunner of worldwide semantic automated decision-making.

This means that the approval process and the involved business events should be broken down into a data and process model at the lowest granularity for maximum agility, conforming hereby to the scientific theory of normalized systems as developed by the University of Antwerp.


Enterprise Architect for the government (long-term vision on the synergy of technology and business)

More to be included


The challenge concerns every action in the world requiring a form of consent, approval or permission. That means any dataset could be used.

It could be interesting to use several distinct datasets such as cookie requests on websites, financial budgeting requests, approving project plans, consent for using personal data, etc. We are currently investigating the possibility of bringing our own datasets, but feel free to come up with your own.



Mature SME


The emphasis is on the development of a protocol, but an application based upon this protocol could be very interesting (for instance in support of an approver’s inevitable everyday quick, intuitive decision-making as opposed to rational decisions, while remaining aware of risks and consequences).

The choice of protocol is up to the teams and their expertise. This could even mean multiple protocols or applications if deemed necessary.


Open source, as we are aiming for a worldwide infrastructure that can be adopted by anyone including governments, citizens and commerce. We expect teams to develop a completely open source project, with the appropriate Open Source Software license. See

The challenge itself can be approached in different ways, depending on what functional (e.g. fully informed consent, the authenticity of approvals, Hohfeld’s legal concepts, etc.) or technical aspects the teams care to develop (e.g. reusability in all possible business systems, normalized systems theory, microservices, linked data, etc.). The more aspects, the better. The more innovative, the better, too (gamification, for instance).


Within the Justice and Security department of the Netherlands, as well as other departments, various processes involve the approval of formal requests, ranging from financial to judicial to HR-related. The ambition is to optimize these processes through innovative digitalization to make sound decisions less time-consuming.

Logos Partners-13

Ambition and goals

The Justice and Security department is on course to release their own innovative approval application DigiAkkoord, based upon the blockchain protocol from Guardtime, decision-making theory, Hohfeld’s legal concepts and microservices architecture.

As this is currently a smaller and more limited project, we would like the ecosystem to work on an integrated worldwide approval management infrastructure, to inspire us.

Track record in innovation and acceleration with teams/companies

The government realizes the potential of innovative technologies and solutions, and therefore provides room for exploration. DigiAkkoord is just one example of many innovative projects at the Justice and Security department.

Another example would be the General Financial Infrastructure prototype (at the Ministry of Finance) that is currently being developed based on blockchain.


Current consortium: Ministry of Justice and Security (JenV)

Ministry of the Interior and Kingdom Relations (BZK)

Ministry of Finance (MinFin)

All three departments are working on initiatives, with BZK leading the development of a General Digital Infrastructure, MinFin in charge of the General Financial Infrastructure and JenV heading DigiAkkoord and many other innovations within their domain.


Welcoming:Representatives of various industries and domains: accountants, government bodies, commercial entities in energy and medicine, human rights advocates, etc.



What does the partner have to offer: Depending upon the results, the Ministry will talk with all involved stakeholders and create a plan to proceed. This will depend on the adaptability of the protocol, the chosen open source license and the role that the department can play to further this idea.


What do consortium partners have to offer: To be included.



Don’t forget to check the following content to get a better insight into the topics of this challenge:
See the Track Deep Dive presentation: here



Flores Bakker – Enterprise Architect for the Ministry of Finance

Any questions? Please contact Flores and the entire Track through the community Digital Nation’s Infrastructure group: 

Interview with Flores Bakker, Ministry of Finance

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