Authors:
Cristina Alcaraz
;
Davide Ferraris
;
Hector Guzman
and
Javier Lopez
Affiliation:
Computer Science Department, University of Malaga, Campus de Teatinos s/n, 29071, Malaga, Spain
Keyword(s):
Multi-Signature, Blockchain, Trust, and Critical Infrastructures.
Abstract:
Blockchain technology plays a crucial role in securing and streamlining transactions across various critical domains. For that reason, this paper presents a Blockchain-based multi-signature system designed for high-stakes scenarios, where both user and Blockchain-generated signatures are required to authorize transactions. By integrating smart contracts, multi-signature coordination, and Blockchain validation, the proposed architecture enhances security, accountability, and resilience. The framework is applied to two key sectors: Mobility and energy. In mobility, it addresses two distinct use cases: Ambulance services, where secure and verifiable authorization of emergency access is required, and insurance claim processing, ensuring transparent, tamper-proof validations. In the energy sector, the system facilitates decentralized, trust-enhanced peer-to-peer energy trading by guaranteeing transaction integrity and compliance. The architecture leverages smart contracts to enforce trans
action policies, aggregate multi-signatures, and validate operations while maintaining transparency and reliability. This work highlights the importance of decentralized decision-making and immutable records in securing critical infrastructures. Future research will focus on optimizing performance and evaluating the system’s integration with existing Blockchain platforms such as Ethereum and Hyperledger.
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