Page 124 - Handbook of Deep Learning in Biomedical Engineering Techniques and Applications

112 Chapter 4 A critical review on using blockchain technology in education domain

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Figure 4.7 Blockchain user case in a university system.

student along with the private key from the validators. When an
employer needs to verify the credentials of a student, a smart
contract executes to fetch the certificate encrypted using private
key along with public key from the student block. These certifi-
cates can be decrypted by the employer using public key to
perform verification.
Thus the digital ledger technology for engineering education
centers operations on students. Students can own their records.
It reduces time for admission, fees payment, and course registra-
tion processes and makes them more transparent. It also makes
the system less fraudulent and error free by maintaining
validated certificates and smart contracts. It also enables person-
alized learning and credit transfers for students and reduces
administrative efforts for the organization.
Characteristics of BC that make it suitable for engineering
education include the following:
• Data integrity: BC is a peer-to-peer network in which all nodes
have same copy of records. When a transaction is initiated,
initiator node signs the transaction with its private key and
sends to other nodes for validation. Maintaining digital signa-
tures and hash values improves data integrity.
• Addressing space: BC contains a 160-bit address, While IPv6
address has 128-bit address, BC has 4.3 billion addresses
than IPv6, thus providing more addressing spacing than IPV6
address.
• Digital identity and accountability: Every operation/record
must be uploaded to the BC network. This gives every