Unlinkable Blockchain-Based E-Voting System

This paper defines a blockchain e-voting scheme to preserve voter-to-ballot unlinkability and voter-privacy through encryption and verifiable signatures. The proposed system holds data-validity with blockchain’s immutability properties and distributed ledger rather than using a centralized authority. With other papers focusing on blockchain e-voting to keep the public from counting their vote twice, we plan on keeping a private linkable key to make sure that no vote is counted twice, but anyone can change their vote later on. This problem showed to be difficult given that we need to preserve voter unlinkability, until they want to re-vote while also not relying too much off of a governing authority to keep track of personal identity.