Abstract: Consensus is crucial to a blockchain system because it allows a group of untrusted nodes to agree. Most blockchain consensus works assume that a block always reaches every participating node during the consensus process…
Abstract: EHRs store health data digitally. EHRs are shared by healthcare stakeholders, making them vulnerable to power outages, data misuse, lack of privacy, security, and audit trails. However, blockchain technology allows nodes in a list…
Abstract: By 2025, smart applications will connect over 75 billion devices to the IoT ecosystem. Sensors provide data, and applications pay data producers. IoT payments and marketplaces enable billions of connected devices to make micro-transactions…
Abstract: Bitcoin has inspired a new generation of blockchain-based technologies over the past decade. Its protocol dominates cryptocurrencies and distributed networks. All permissionless blockchains often implement P2P layer solutions in their network layer. The Bitcoin…
Abstract: Data flows from the first node, where it is initiated, to the last node, where it is processed and stored. Due to the number of participants, pipeline dataflow integrity must be protected. We propose…
Abstract: The underlying work addresses security, personal identity, and trust issues in conventional Vehicular Energy Networks (VENs). This study proposes a Blockchain (BC)-based announcement system for VENs to ensure secure and reliable announcement dissemination in…
Abstract: All blockchain services need the consensus algorithm to tolerate node faults with data consistency and integrity. Limitations of consensus algorithm studies: No resource consumption analysis was done, performance analysis was incomplete in terms of…
Abstract: Cross-border commerce is vital to economic growth, and its payment and settlement methods have garnered attention. The current payment settlement method is inefficient, expensive, and insecure. This paper examined blockchain-based payment settlement models. This…
Abstract: Reputation systems help users trust on- and off-chain services. Modern reputation systems usually require a trusted central authority to protect rater privacy or add noise to user feedback. User feedback should not be tampered…
Abstract: Quantum computers weaken classical blockchain security, requiring either a post-quantum upgrade or a quantum blockchain. A generalized Gram-Schmidt procedure with dimensional lifting is used to model a fully quantum blockchain. In this model, the…
Abstract: Light nodes store a small portion of the blockchain ledger to improve scalability. In some blockchains, a malicious node can hide the invalid part of a block and make light nodes accept it. Yu…
Abstract: Following the introduction of the IoT (Internet of Things) and the rapid growth of digital applications, data is collected from a wide variety of sources at an astonishing rate and is growing exponentially. Social…
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