What can I do with the Web Of Trust?

Note that the Web of Trust is not necessary for the operation of the blockchain, since it is completely permissionless and anyone can join the network. The web of trust is needed so that one can assess students’ knowledge having a set of grades that is possibly biased. The higher the resulting trust level, the higher educator’s ability to assess knowledge.

Since fake educational institutions do not assess knowledge well, the trust in these institutions is expected to be low. And if some educational institution issues grades that generally correspond to students’ knowledge, the trust is expected to be high.

Do students have to register on your platform themselves?

There’s no central data storage in DISCIPLINA because of the privacy issues. The student needs to register via their educational institutions. Educational institutions will store all the meta about their students (their names, photos if applicable, etc.), just like they do now. They will also store the mappings between the students’ DISCIPLINA address and their personal data.

Does the DISCIPLINA blockchain guarantee personality of the student?

We, as DISCIPLINA, can only guarantee that a student with DISCIPLINA address “A” received a grade “B” for a certain course “C” in an educational institution with DISCIPLINA address “E”. All the personalization is done via overlay protocols (probably like DISCIPLINA name service on top of the blockchain or some centralized services). Recruiters are expected to do their due diligence and check whether the educational institution indeed has the address “E”, e.g. by checking the website of the organization.

How will the regulations to General Data Protection Regulation (GDPR) and other data regulations be ensured after registration?

The educational institutions are responsible for compliance with the regulations, like they are now. DISCIPLINA doesn’t introduce any new challenges in this respect.

What about integration to another systems?

We are going to provide plugins for the popular CRM systems that the educational institutions use (like Moodle and Blackboard), so that the information is exported automatically. The educators will simply need to install our software and the integration plugin, and then they will be in our system.

Do recruiters need to know what the ID of a student on the blockchain is?

It is true that students have to provide their identification and their DISCIPLINA address. They will also need to sign some legal documents. We will try to simplify this process as much as possible for both the students and the educational institutions.

What if a student passed courses at two different institutions: does the same student have two different IDs?

Yes, and this is the decision of a particular student. He can either use the same DISCIPLINA address and have a continuous history of education, or he can use “the right to be forgotten” and generate a new address. We believe that people need to have a way to “start over”, and we shouldn’t forbid it on the protocol level. There is a way to bind an address to an ID in a non-revocable way, we just believe we shouldn’t do this.

Is DISCIPLINA a kind of consortium blockchain or just a private one but with a bridge of public domain?

We have a permissionless public chain which is bridged with the private chains of educational institutions. The private chains do not use any consensus algorithm, so we actually can’t call them consortium chains.

Our private chains could be seen as oracles in traditional permissionless systems, but there’s much more in the architecture — unlike traditional oracles, the educational institutions cannot misbehave, e.g. disclose incorrect information. We also build a reputation system to ensure that the grades, initially issued by the educational institutions, correspond to the students’ knowledge.

How would I know that the info I’m getting from the private layer is legitimate?

The private layer contains students’ grades. We cannot control how educational institutions issue their grades, which is why we use the Web of Trust — to ensure that the grades correspond to the knowledge of the students. With the Web of Trust we can build a decentralized rating system that is resistant to collusion. Then we use blockchain (the public layer) and some simple cryptography to guarantee that the grades cannot be tampered with. When an educational institution wants to make a set of grades immutable, it builds a special data structure called a Merkle tree. The root of this tree (essentially a hash) goes to the public chain, and and the paths from the root to the grades go to students. This way the students can always prove that they really got a grade — even without contacting the educational institution!

Previous FAQs: 
Part 1: https://blog.disciplina.io/posts/disciplina-faq-part
Part 2: https://blog.disciplina.io/posts/disciplina-faq-part-2
Part 3: https://blog.disciplina.io/posts/disciplina-faq-part-3



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