Blockchain-Based-Digital-Identity-System

In today's life, the demand for privacy and transparency is everywhere. Blockchain is going to lead the modern world with its revolutionary technology because of its security, transparency altogether. Identity is an important aspect in our daily life as a citizen and digital identity will play an important role to make our life easy and hassle free. The use of blockchain in digital identity is important to keep it secure and undoubtedly prevents the violation of privacy. % However, there is lack of works that includes the most vital bio-metric information of an individual for creating a blockchain-based digital identity. % In this paper, we have proposed a system on blockchain-based digital identity for individuals using bio-information. We have implemented our proposed digital identity system using ethereum smart contract. The system has fulfilled all the criteria of an identity system. % Our results show that an intruder cannot access the personal data of a citizen; any unauthorized access attempt is denied instantly, thereby ensuring the privacy of private citizen data. All of the functionalities and the security issues have been tested. % Our proposed blockchain-based digital identity system can be useful for the government of a country to provide its citizen a highly secured digital identity. It will make the life of all citizens hassle free without requiring them to carry any paper document.

Blockchain-Based-Ownership-and-VAT-Management-System

Blockchain is a revolutionary technology due to its security and transparency. A digital identity system based on blockchain technology can play an important role in securing the asset ownership information and protecting it against any discrepancy. However, there has been no work that combines the advantages of blockchain technology and an individual's biometric information in creating a digital identity which can be used for ownership system, thereby preventing any fraud in ownership system. In this paper, a Blockchain based Ownership and Value Added Tax (VAT) management system has been proposed depending on a digital identity system that is implemented on blockchain technology using individuals' biometric information. The Ownership system along with VAT management was implemented using Ethereum smart contract. The experimental results of testing our system indicate that an intruder cannot perform any modification illegally to ownership data in the system. Any adversarial attempt is aborted instantly and thereby the security of citizen's ownership information is ensured. Moreover, appropriate amount of VAT is automatically assigned to the owner while changing the ownership of suitable products. Our proposed system can be very useful for protecting digital ownership information of citizens of a country and ensuring fair payment of VAT for suitable products.