Application-specific blockchains are gaining popularity over general-purpose blockchains which require multiple services to share network resources. These blockchains adopt a modular architecture that allocates specific tasks to distinct layers, ...

Blockchain provides several advantages, including decentralization, data integrity, traceability, and immutability. However, despite its advantages, blockchain suffers from significant limitations, including scalability, resource greediness, governance ...

JointCloud computing represents a new generation cloud computing paradigm, which deeply integrates the cloud resources of multiple Cloud Service Providers (CSPs) to offer tailored cloud services to users. In contrast to traditional multi-cloud ...

• Semi-trusted cloud providers will infringe user data ownership in JointCloud.
• Cloud providers’ diverse data management mechanisms lead to heterogeneity.
• Blockchain integration in JointCloud ensures secure data storage and ...

Stock markets are inherently complex, posing a challenge for investors who must analyze large amounts of data for strategic decision-making. This complexity, coupled with the centralized control and high transaction costs of traditional stock ...

• Investor decision-making system using complex networks for multi-stock analysis.
• Decentralized stock market platform using blockchain and smart contracts.
• Proof-of-concept evaluation with real-world data from the NASDAQ stock ...

Due to the susceptibility to nothing-at-stake and long-range attacks, the Proof-of-Stake consensus faces challenges in securely and efficiently confirming blocks. We propose a new Proof-of-Stake consensus, Voted Weightest Sub-Tree(VWeiST) consensus. It ...

Despite the recent increase in the popularity of blockchain, the technology suffers from the trilemma trade-off between security, decentralisation and scalability, prohibiting adoption and limiting the efficiency and effectiveness of the induced system. ...

Blockchain is a promising infrastructure for the internet and digital economy, but it has serious scalability problems, that is, long block synchronization time and high storage cost. Conventional coarse-grained data deduplication schemes (block or file ...

We present PDFed, a decentralized, aggregator-free, and asynchronous federated learning protocol for training image diffusion models using a public blockchain. In general, diffusion models are prone to memorization of training data, raising privacy and ...

Healthcare supply chain domain and medical records’ management face numerous challenges that come with new demands, such as customer dissatisfaction, rising healthcare costs, tracking and traceability of drugs, and security and privacy related to ...

• IoT blockchain architecture for preventing access violations in health supply chain.
• Blockchain combined with IoT offers a reliable way to protect medical data.
• Hyperledger Fabric protects sensitive data in a P2P distributed and ...

Blockchain has been widely used for secure transactions among untrusted parties, but the current design of blockchain does not provide sufficient privacy and security for the data on the chain, limiting its application in sensitive information ...

• Fully homomorphic encryption enables computation in ciphertext form.
• Approach merges blockchain with fully homomorphic encryption.
• Approach boosts blockchain scalability with new privacy-preserving scheme.
• Approach introduces ...

The fusion of edge computing architecture and blockchain technology faces challenges such as heterogeneous edge device performance limitations and the inefficiency and high storage redundancy of blockchain systems, resulting in suboptimal fusion ...

• The introduction of a layered and sharding blockchain model suitable for edge computing. This model consists of three layers: the Cloud Chain Layer, Edge Chain Layer, and Terminal Layer. It employs a layered blockchain deployment strategy, ...

With the burgeoning adoption of blockchain technology, cryptocurrencies have surged in popularity, becoming a focal point of global interest. Concurrently, the emergence of cryptocurrency phishing scams poses a significant threat to the financial ...

Enhancing the efficiency of emergency logistics is essential to reinforce the response capacity to emergencies. It requires collaborative efforts from both the emergency management departments and logistics enterprises. However, the capability ...

• A two-stage evolutionary game model is developed.
• To present the stakeholder gaming process, two complex networks are built.
• The constructed networks are used to analyze game evolution sensitivity.

The blockchain platforms (BPs) have emerged as important tools for improving enterprise data security. However, the selection of a suitable BP for is a challenging issue for enterprises. In this paper, a novel heterogenous multi-criteria decision-...

With the development of cloud computing, verifiable outsourcing computation (VC) has received much more attention. The polynomial is a fundamental mathematical function with widespread applications. Plenty of VC schemes for polynomials have been ...

• A deterministic verifiable mechanism is proposed to achieve no FPR.
• Paillier encryption and random numbers are used to achieve no FHE.
• The scheme can guarantee fairness with an overwhelming probability .

Blockchain technology, successful in cryptocurrency, holds transformative potential for various industries. In decentralized applications driven by blockchain, acquiring non-digitally verifiable data is crucial, particularly in smart contracts. ...

• We uncover a new threat in the decentralized blockchain Oracle system on the consensus layer, named misdirection attack. This attack is aimed at the voting process of Oracle’s data judgment and can significantly reduce the security region ...

The port supply chain can provide strong data support for smart port decision-making. However, the traditional port supply chain suffers from poor flexibility of centralized authority management, data asymmetry, low efficiency of encrypted data ...

• A fine-grained access control model is designed in smart contracts.
• Blockchain-based dynamic searchable encryption for port data sharing.
• Data integrity and security is auditable.
• Off-chain auxiliary storage for large-scale ...

Blockchain is a relatively recent technology that provides immutability, traceability and transparency of information, thus building trust in the digital society. Blockchain networks generate a large amount of logs which capture and describe data ...

• A proposal for integrating complex event processing and blockchain.
• Developing a portable, maintainable and easily configurable architecture.
• Monitoring blockchain data in real time.
• Automatically detecting real-time anomalies ...

With the steep growth of Electric Vehicles (EV's), the consequent demand of energy for charging puts significant load to powergrids. Renewable Energy Sources enabled microgrids can alleviate the problem of energy demand and trade the energy ...

In the rapidly evolving digital world, blockchain technology is becoming the foundation for numerous applications, ranging from financial services to supply chain management. As the usage of blockchain is becoming more prevalent, the energy-intensive ...