A Reputation-Based Mechanism for Transaction Processing in Blockchain Systems

【Author】 Zhang, Jiarui; Cheng, Yukun; Deng, Xiaotie; Wang, Bo; Xie, Jan; Yang, Yuanyuan; Zhang, Mengqian

【Source】IEEE TRANSACTIONS ON COMPUTERS

【影响因子】3.183

【Abstract】Blockchain protocols require nodes to verify all received transactions before forwarding them. However, massive spam transactions cause the participants in blockchain systems to consume many resources in verifying and propagating transactions. This paper proposes a reputation-based mechanism to increase the efficiency of processing transactions by considering the reputations of the sending nodes. Reputations are in turn adjusted based on the quality of transaction processing. Our proposed reputation-based mechanism offers three main contributions. First, we modify the verification strategy so that nodes set a probability of verifying a received transaction considering the likelihood of it being spam: transactions from a node with a low reputation have a high probability of being verified. Second, we optimize the transaction forwarding protocol to reduce propagation delay by prioritizing forwarding transactions to reputable receivers. Third, we design a data request protocol that provides alternative data exchange methods for nodes with different reputations. A series of simulations demonstrate the performance of our reputation-based mechanism.

【Keywords】Blockchains; Costs; Peer-to-peer computing; Generators; Bitcoin; Denial-of-service attack; Delays; Blockchain; reputation-based mechanism; strategic verification; forwarding protocol; data request

【发表时间】2022 OCT 1

【收录时间】2022-09-22

【文献类型】理论模型

【主题类别】

区块链技术-核心技术-区块传输