Decentralized Infrastructure for Digital Notarizing, Signing and Sharing Files using Blockchain
Cosmin-Iulian Irimia
TL;DR
DocChain proposes a decentralized infrastructure for digital notarization signing and sharing of documents using blockchain and IPFS. It combines microservices for data extraction obfuscation and notarization with a fact based verification approach anchored on a private blockchain and IPFS storage to preserve privacy and scalability. The key contributions include a five microservice architecture with an orchestrator a keystore for keys and an on premises processing model with selective disclosure and verifiable facts. The work demonstrates feasibility via a prototype and provides a cost and security analysis highlighting practical implications for privacy preserving digital document management.
Abstract
Traditional paper-based document management has long posed challenges related to security, authenticity, and efficiency. Despite advances in digitalization, official documents remain vulnerable to forgery, loss, and unauthorized access. This thesis proposes a decentralized infrastructure for digital notarization, signing, and sharing of documents using blockchain technology. The research addresses key issues of transparency, immutability, and feasibility by defining system requirements, evaluating existing solutions, and proposing a novel architecture based on distributed systems. By combining cryptographic techniques with decentralized storage, this research contributes to the development of a more secure and efficient framework for managing official documents. The findings highlight the potential of blockchain-based digital notarization to streamline bureaucratic processes, mitigate security risks, and enhance user trust in digital document management.