During the donation process, the source and flow of donated goods are not disclosed to the public in time. In this paper, we propose the donation tracing blockchain model (DTBM) to render the donation process open and...
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During the donation process, the source and flow of donated goods are not disclosed to the public in time. In this paper, we propose the donation tracing blockchain model (DTBM) to render the donation process open and transparent, by using blockchain with decentralization, traceability, and anti-tampering. However, the existing blockchain systems have a problem that the process of Delegated Proof of Stake (dpos) consensusalgorithm is easily controlled by a few nodes. To prevent the centralization and reduce the probability of malicious nodes being selected, we propose an improved dpos consensus algorithm for DTBM. It adopts the K-means algorithm to select good nodes in the agent queue in advance. Experimental results show that the donation process is transparent and traceable in DTBM. And it also solves the problem of centralization and improves security.
Aiming at the problems of "swing node", poor voting enthusiasm of nodes with small interests, and corruption attack of malicious nodes in traditional dposalgorithm, this paper proposes an ET-dposconsensus ...
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The current data sharing methods have significant drawbacks in terms of security, efficiency, and scalability. Therefore, this article proposes a massive multi-dimensional data sharing and interaction algorithm based ...
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The current data sharing methods have significant drawbacks in terms of security, efficiency, and scalability. Therefore, this article proposes a massive multi-dimensional data sharing and interaction algorithm based on cloud edge collaboration. In the edge layer and cloud layer, data from sensors and nodes undergo re-encryption through proxies during the collection process. Using the dposconsensus mechanism for sharing reduces the number of consensus nodes, improves speed and efficiency, and ensures node honesty. The improved dpos will select proxy nodes. Cloud layers share and access data lake models through smart contracts. The experimental results demonstrate that the algorithm can achieve the sharing and interaction of massive multidimensional data, and the total number of honest nodes in the selected consensus node set reaches over 90%. The consensus process can generate more efficient blocks, which enhances the fault tolerance of data sharing. The study verifies that the method proposed in this article can improve the security of sharing massive multidimensional data.
The main study focuses on the shortcomings of the traditional PBFT consensusalgorithm and the dpos consensus algorithm, and then combines the two algorithms to form a new consensusalgorithm from the perspective of o...
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ISBN:
(纸本)9781665426053
The main study focuses on the shortcomings of the traditional PBFT consensusalgorithm and the dpos consensus algorithm, and then combines the two algorithms to form a new consensusalgorithm from the perspective of optimising the consensus performance of the blockchain, which can achieve several advantages in terms of node reduction view switching, node dynamics, bandwidth overhead reduction, transaction throughput and lower system latency performance. The advantages of the improved PBFT algorithm are illustrated by the experimental data on throughput, system latency of account creation and bandwidth overhead, which are compared to illustrate the effect of the improved PBFT algorithm.
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