2019 IEEE International Conference on Blockchain (Blockchain)最新文献_第2页

On Forks and Fork Characteristics in a Bitcoin-Like Distribution Network 论类比特币分销网络中的分叉和分叉特征

2019 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2019-07-01 DOI: 10.1109/Blockchain.2019.00035

V. Mišić, J. Misic, Xiaolin Chang

引用次数: 16

A Fully Decentralized Time-Lock Encryption System on Blockchain 区块链上完全去中心化的时间锁加密系统

2019 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2019-07-01 DOI: 10.1109/Blockchain.2019.00047

W. Lai, Chih-wen Hsueh, Ja-Ling Wu

引用次数: 9

A Lightweight Blockchain-Based Privacy Protection for Smart Surveillance at the Edge 基于轻量级区块链的边缘智能监控隐私保护

2019 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2019-07-01 DOI: 10.1109/Blockchain.2019.00080

Alem Fitwi, Yu Chen, Sencun Zhu

{"title":"A Lightweight Blockchain-Based Privacy Protection for Smart Surveillance at the Edge","authors":"Alem Fitwi, Yu Chen, Sencun Zhu","doi":"10.1109/Blockchain.2019.00080","DOIUrl":"https://doi.org/10.1109/Blockchain.2019.00080","url":null,"abstract":"Witnessing the increasingly pervasive deployment of security video surveillance systems(VSS), more and more individuals have become concerned with the issues of privacy violations. While the majority of the public have a favorable view of surveillance in terms of crime deterrence, individuals do not accept the invasive monitoring of their private life. To date, however, there is not a lightweight and secure privacy-preserving solution for video surveillance systems. The recent success of blockchain (BC) technologies and their applications in the Internet of Things (IoT) shed a light on this challenging issue. In this paper, we propose a Lightweight, Blockchain-based Privacy protection (Lib-Pri) scheme for surveillance cameras at the edge. It enables the VSS to perform surveillance without compromising the privacy of people captured in the videos. The Lib-Pri system transforms the deployed VSS into a system that functions as a federated blockchain network capable of carrying out integrity checking, blurring keys management, feature sharing, and video access sanctioning. The policy-based enforcement of privacy measures is carried out at the edge devices for real-time video analytics without cluttering the network.","PeriodicalId":221068,"journal":{"name":"2019 IEEE International Conference on Blockchain (Blockchain)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134266184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 34

On Sharding Permissioned Blockchains 关于分片许可区块链

2019 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2019-07-01 DOI: 10.1109/Blockchain.2019.00044

Mohammad Javad Amiri, D. Agrawal, A. E. Abbadi

引用次数: 24

A Reputation Management Framework for Knowledge-Based and Probabilistic Blockchains 基于知识和概率的区块链声誉管理框架

2019 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2019-07-01 DOI: 10.1109/Blockchain.2019.00078

Tara Salman, R. Jain, Lav Gupta

{"title":"A Reputation Management Framework for Knowledge-Based and Probabilistic Blockchains","authors":"Tara Salman, R. Jain, Lav Gupta","doi":"10.1109/Blockchain.2019.00078","DOIUrl":"https://doi.org/10.1109/Blockchain.2019.00078","url":null,"abstract":"Recently, leading research communities have been investigating the use of blockchains for Artificial Intelligence (AI) applications, where multiple participants, or agents, collaborate to make consensus decisions. To achieve this, the data in the blockchain storage have to be transformed into blockchain knowledge. We refer to these types of blockchains as knowledge-based blockchains. Knowledge-based blockchains are potentially useful in building efficient risk assessment applications. An earlier work introduced probabilistic blockchain which facilitates knowledge-based blockchains. This paper proposes an extension for the probabilistic blockchain concept. The design of a reputation management framework, suitable for such blockchains, is proposed. The framework has been developed to suit the requirements of a wide range of applications. In particular, we apply it to the detection of malicious nodes and reduce their effect on the probabilistic blockchains' consensus process. We evaluate the framework by comparing it to a baseline using several adversarial strategies. Further, we analyze the collaborative decisions with and without the malicious node detection. Both results show a sustainable performance, where the proposed work outperforms others and achieves excellent results.","PeriodicalId":221068,"journal":{"name":"2019 IEEE International Conference on Blockchain (Blockchain)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124921324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

A Heuristic-Based Private Bitcoin Payment Network Formation Using Off-Chain Links 基于启发式的私有比特币支付网络的链下链接形成

2019 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2019-07-01 DOI: 10.1109/Blockchain.2019.00046

Enes Erdin, Mumin Cebe, K. Akkaya, E. Bulut, A. Uluagac

{"title":"A Heuristic-Based Private Bitcoin Payment Network Formation Using Off-Chain Links","authors":"Enes Erdin, Mumin Cebe, K. Akkaya, E. Bulut, A. Uluagac","doi":"10.1109/Blockchain.2019.00046","DOIUrl":"https://doi.org/10.1109/Blockchain.2019.00046","url":null,"abstract":"While Bitcoin dominates the market for cryptocurrencies, its use in micropayments is still a challenge due to its long transaction validation times and high fees. Recently, the concept of off-chain payments is introduced that led to the idea of establishing a payment network called Lightning Network (LN). Off-chain links provide the ability to do transactions without writing to Blockchain. However, LN's design still favors fees and is creating hub nodes that defeat the purpose of Blockchain. In addition, it is still not reliable as not all the transactions are guaranteed to be transmitted to their destinations. If current retailers would like to use it, these problems might hinder its adoption. To address this issue, in this paper, we advocate creating a private payment network among a given set of retailers that will serve their business needs, just like the idea of private Blockchains. The goal is to build a pure peer-to-peer topology that will eliminate the need for relays and increase the robustness of payments. Using off-chain links as edges and retailers as nodes, the problem is formulated as a multi-flow commodity problem where transactions represent the commodities from various sources to destinations. As the multi-flow commodity problem is NP-Complete, we propose a heuristic approach that utilizes Dijkstra's shortest path algorithm in a dynamic way by updating the edge weights when new payment paths are to be found. The order of transactions is randomized to provide fairness among the retailers. The evaluations indicate that the proposed heuristic comes close to an optimal solution while providing scalability and user privacy.","PeriodicalId":221068,"journal":{"name":"2019 IEEE International Conference on Blockchain (Blockchain)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128336655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

ChainSplitter: Towards Blockchain-Based Industrial IoT Architecture for Supporting Hierarchical Storage ChainSplitter:基于区块链的工业物联网架构，支持分层存储

2019 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2019-07-01 DOI: 10.1109/Blockchain.2019.00030

Gang Wang, Z. Shi, M. Nixon, Song Han

{"title":"ChainSplitter: Towards Blockchain-Based Industrial IoT Architecture for Supporting Hierarchical Storage","authors":"Gang Wang, Z. Shi, M. Nixon, Song Han","doi":"10.1109/Blockchain.2019.00030","DOIUrl":"https://doi.org/10.1109/Blockchain.2019.00030","url":null,"abstract":"The fast developing Industrial Internet of Things (IIoT) technologies provide a promising opportunity to build large-scale systems to connect numerous heterogeneous devices into the Internet. Most existing IIoT infrastructures are based on a centralized architecture, which is easier for management but cannot effectively support immutable and verifiable services among multiple parties. Blockchain technology provides many desired features for large-scale IIoT infrastructures, such as decentralization, trustworthiness, trackability, and immutability. This paper presents a blockchain-based IIoT architecture to support immutable and verifiable services. However, when applying blockchain technology to the IIoT infrastructure, the required storage space posts a grant challenge to resource-constrained IIoT infrastructures. To address the storage issue, this paper proposes a hierarchical blockchain storage structure, ChainSplitter. Specially, the proposed architecture features a hierarchical storage structure where the majority of the blockchain is stored in the clouds, while the most recent blocks are stored in the overlay network of the individual IIoT networks. The proposed architecture seamlessly binds local IIoT networks, the blockchain overlay network, and the cloud infrastructure together through two connectors, the blockchain connector and the cloud connector, to construct the hierarchical blockchain storage. The blockchain connector in the overlay network builds blocks in blockchain from data generated in IIoT networks, and the cloud connector resolves the blockchain synchronization issues between the overlay network and the clouds. We also provide a case study to show the efficiency of the proposed hierarchical blockchain storage in a practical Industrial IoT case.","PeriodicalId":221068,"journal":{"name":"2019 IEEE International Conference on Blockchain (Blockchain)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128476612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 68

Ownership Preserving AI Market Places Using Blockchain 使用区块链保护人工智能市场的所有权

2019 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2019-07-01 DOI: 10.1109/Blockchain.2019.00029

N. Somy, Kalapriya Kannan, Vijay Arya, Sandeep Hans, Abhishek Singh, P. Lohia, S. Mehta

{"title":"Ownership Preserving AI Market Places Using Blockchain","authors":"N. Somy, Kalapriya Kannan, Vijay Arya, Sandeep Hans, Abhishek Singh, P. Lohia, S. Mehta","doi":"10.1109/Blockchain.2019.00029","DOIUrl":"https://doi.org/10.1109/Blockchain.2019.00029","url":null,"abstract":"We present a blockchain based system that allows data owners, cloud vendors, and AI developers to collaboratively train machine learning models in a trustless AI marketplace. Data is a highly valued digital asset and central to deriving business insights. Our system enables data owners to retain ownership and privacy of their data, while still allowing AI developers to leverage the data for training. Similarly, AI developers can utilize compute resources from cloud vendors without loosing ownership or privacy of their trained models. Our system protocols are set up to incentivize all three entities - data owners, cloud vendors, and AI developers to truthfully record their actions on the distributed ledger, so that the blockchain system provides verifiable evidence of wrongdoing and dispute resolution. Our system is implemented on the Hyperledger Fabric and can provide a viable alternative to centralized AI systems that do not guarantee data or model privacy. We present experimental performance results that demonstrate the latency and throughput of its transactions under different network configurations where peers on the blockchain may be spread across different datacenters and geographies. Our results indicate that the proposed solution scales well to large number of data and model owners and can train up to 70 models per second on a 12-peer non optimized blockchain network and roughly 30 models per second in a 24 peer network.","PeriodicalId":221068,"journal":{"name":"2019 IEEE International Conference on Blockchain (Blockchain)","volume":"226 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113980725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 27

Micro-Accreditation for Matching Employer E-Hire Needs 符合雇主电子招聘需求的微型认证

2019 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2019-07-01 DOI: 10.1109/Blockchain.2019.00054

Zachary Zaccagni, Aditya Paul, R. Dantu

引用次数: 2

Contract-Based Approach for Security Deposit in Blockchain Networks with Shards 基于合约的区块链分片网络押金方法

2019 IEEE International Conference on Blockchain (Blockchain) Pub Date : 2019-07-01 DOI: 10.1109/Blockchain.2019.00019

Jing Li, Tingting Liu, D. Niyato, Ping Wang, Jun Li, Zhu Han

{"title":"Contract-Based Approach for Security Deposit in Blockchain Networks with Shards","authors":"Jing Li, Tingting Liu, D. Niyato, Ping Wang, Jun Li, Zhu Han","doi":"10.1109/Blockchain.2019.00019","DOIUrl":"https://doi.org/10.1109/Blockchain.2019.00019","url":null,"abstract":"As a decentralized ledger technology, blockchain is considered to be a potential solution for applications with highly concentrated management mechanism. However, most of the existing blockchain networks are employed with the hash-puzzle-solving consensus protocol, known as proof-of-work. The competition of solving the puzzle introduces high latency, which directly leads to a long transaction-processing time. One solution of this dilemma is to establish a blockchain network with shards. In this paper, we focus on the blockchain network with shards and adopt the security-deposit based consensus protocol, studying the problem of how to balance the security incentive and the economic incentive. Also, the inherent features of the blockchain, i.e., anonymity and decentralization, introduce the information asymmetric issue between the beacon chain and the participants. The contract theory is utilized to formulate the problem between them. As such, the optimal rewards related to the different types of validators can be obtained, as well as the reasonable deposits accordingly. Compared with the fixed deposits, the flexible deposits can provide enough economic incentive for the participants without losing the security incentives. Besides, the simulation results demonstrate that the contract theory approach is capable of maximizing the beacon chain's utility and satisfying the incentive compatibility and individual rationality of the participants.","PeriodicalId":221068,"journal":{"name":"2019 IEEE International Conference on Blockchain (Blockchain)","volume":"116 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113945860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9