基于区块链Oracle网络和有向无环图分布式账本的高效脱链数据供给机制

IF 7.9 2区计算机科学 Q1 ENGINEERING, MULTIDISCIPLINARY

IEEE Transactions on Network Science and Engineering Pub Date : 2025-03-24 DOI:10.1109/TNSE.2025.3554239

Libo Feng;Hongyu Zhu;Bei Yu;Shaowen Yao

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引用次数: 0

摘要

智能合约作为在区块链网络上运行的自主程序引入。为了解决区块链上的智能合约无法与现实世界交互的困难，提出了一些区块链oracle实现方案。然而，现有的数据馈送方案仍然不能满足链下密集型数据馈送的需求。本文将有向无环图（DAG）分布式账本引入区块链oracle数据馈送方案，提出了一个基于DAG分布式账本的去中心化oracle网络框架。轻量级DAG共识机制确保了数据的完整性，并显著减少了进入DDON的无价值信息，最终生成确定性数据。所提出的DAG结构支持并行处理事务，并加快数据馈送的效率。这也允许提供历史数据。此外，本文还设计了一种脱链数据馈送机制，用于通过所提出的oracle网络进行数据馈送的脱链密集型流，将数据馈送与数据提取分离，提高了多请求馈送的效率。评估结果和讨论表明，所提出的框架减少了每个智能合约请求的响应时间，并且比其他主流oracle数据提要服务更高效和灵活。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Efficient Off-Chain Data Feed Mechanism Using a Novel Blockchain Oracle Network Combined With Directed Acyclic Graph Distributed Ledger

Smart contracts were introduced as autonomous programs running across a blockchain network. To solve the difficulty that smart contracts on the blockchain cannot interact with the real world, some blockchain oracle implementation schemes have been proposed. However, the existing data feed schemes still cannot meet the demand of off-chain intensive data feed. This paper introduces a directed acyclic graph (DAG)-distributed ledger into the blockchain oracle data feed scheme, to propose a DAG-distributed ledger-based decentralized oracle network (DDON) framework. The lightweight DAG consensus mechanism ensures data integrity and significantly reduces the entry of valueless information into the DDON, ultimately generating deterministic data. The proposed DAG structure enables parallel processing of transactions and accelerates the efficiency of data feeds. This also enables the feeding of historical data. In addition, an off-chain data feed mechanism is designed for off-chain intensive streaming of data feeds through the proposed oracle network, to separate data feeds from data fetches and improve the efficiency of feeding multiple requests. The evaluation results and discussions demonstrate that the proposed framework reduces the response time for every smart contract request and is more efficient and flexible than other mainstream oracle data feed services.

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来源期刊

IEEE Transactions on Network Science and Engineering Engineering-Control and Systems Engineering

CiteScore

12.60

自引率

9.10%

发文量

393

期刊介绍： The proposed journal, called the IEEE Transactions on Network Science and Engineering (TNSE), is committed to timely publishing of peer-reviewed technical articles that deal with the theory and applications of network science and the interconnections among the elements in a system that form a network. In particular, the IEEE Transactions on Network Science and Engineering publishes articles on understanding, prediction, and control of structures and behaviors of networks at the fundamental level. The types of networks covered include physical or engineered networks, information networks, biological networks, semantic networks, economic networks, social networks, and ecological networks. Aimed at discovering common principles that govern network structures, network functionalities and behaviors of networks, the journal seeks articles on understanding, prediction, and control of structures and behaviors of networks. Another trans-disciplinary focus of the IEEE Transactions on Network Science and Engineering is the interactions between and co-evolution of different genres of networks.