2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)最新文献_第7页

On Public Decentralized Ledger Oracles via a Paired-Question Protocol 基于配对问题协议的公共去中心化账本预言机

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2019-05-01 DOI: 10.1109/BLOC.2019.8751484

M. Merlini, Neil Veira, Ryan Berryhill, A. Veneris

引用次数: 21

Identification of Darknet Markets’ Bitcoin Addresses by Voting Per-address Classification Results 通过对每个地址分类结果的投票来识别暗网市场的比特币地址

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2019-05-01 DOI: 10.1109/BLOC.2019.8751391

Kota Kanemura, Kentaroh Toyoda, T. Ohtsuki

{"title":"Identification of Darknet Markets’ Bitcoin Addresses by Voting Per-address Classification Results","authors":"Kota Kanemura, Kentaroh Toyoda, T. Ohtsuki","doi":"10.1109/BLOC.2019.8751391","DOIUrl":"https://doi.org/10.1109/BLOC.2019.8751391","url":null,"abstract":"Bitcoin is a decentralized digital currency whose transactions are recorded in a common ledger, so called blockchain. Due to the anonymity and lack of law enforcement, Bitcoin has been misused in darknet markets which deal with illegal products, such as drugs and weapons. Therefore from the security forensics aspect, it is demanded to establish an approach to identify newly emerged darknet markets’ transactions and addresses. In this paper, we thoroughly analyze Bitcoin transactions and addresses related to darknet markets and propose a novel identification method of darknet markets’ addresses. To improve the identification performance, we propose a voting based method which decides the labels of multiple addresses controlled by the same user based on the number of the majority label. Through the computer simulation with more than 200K Bitcoin addresses, it was shown that our voting based method outperforms the nonvoting based one in terms of precision, recal, and F1 score. We also found that DNM’s addresses pay higher fees than others, which significantly improves the classification.","PeriodicalId":314490,"journal":{"name":"2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128256185","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: 25

A Landscape of Cryptocurrencies 加密货币的景观

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2019-05-01 DOI: 10.1109/BLOC.2019.8751469

Zhaofang Li, Q. Lu, Shiping Chen, Yue Liu, Xiwei Xu

引用次数: 13

A Payment Channel Based Hybrid Decentralized Ethereum Token Exchange 基于混合分散式以太坊令牌交换的支付通道

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2019-05-01 DOI: 10.1109/BLOC.2019.8751454

Xuan Luo, Wei Cai, Zehua Wang, Xiuhua Li, Victor C. M. Leung

引用次数: 11

Proof-of-Prestige: A Useful Work Reward System for Unverifiable Tasks 声望证明:一个对无法验证的任务有用的工作奖励系统

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2019-05-01 DOI: 10.1109/BLOC.2019.8751406

M. Król, A. Sonnino, Mustafa Al-Bassam, Argyrios G. Tasiopoulos, I. Psaras

{"title":"Proof-of-Prestige: A Useful Work Reward System for Unverifiable Tasks","authors":"M. Król, A. Sonnino, Mustafa Al-Bassam, Argyrios G. Tasiopoulos, I. Psaras","doi":"10.1109/BLOC.2019.8751406","DOIUrl":"https://doi.org/10.1109/BLOC.2019.8751406","url":null,"abstract":"As cryptographic tokens and altcoins are increasingly being built to serve as utility tokens, the notion of useful work consensus protocols, as opposed to number-crunching PoW consensus, is becoming ever more important. In such contexts, users get rewards from the network after they have carried out some specific task useful for the network. While in some cases the proof of some utility or service can be proved, the majority of tasks are impossible to verify. In order to deal with such cases, we design “Proof-of-Prestige” (PoP)-a reward system that can run on top of Proof-of-Stake blockchains. PoP introduces “prestige” which is a volatile resource and, in contrast to coins, regenerates over time. Prestige can be gained by performing useful work, spent when benefiting from services and directly translates to users minting power. PoP is resistant against Sybil and Collude attacks and can be used to reward workers for completing unverifiable tasks, while keeping the system free for the end-users. We use two exemplar use-cases to showcase the usefulness of PoP and we build a simulator to assess the cryptoeconomic behaviour of the system in terms of prestige transfer between nodes.","PeriodicalId":314490,"journal":{"name":"2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134639231","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: 14

Distributed Ledger Witness Selection in Bounded Width Directed Acyclic Graphs 有界宽度有向无环图中的分布式账本见证选择

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2019-05-01 DOI: 10.1109/BLOC.2019.8751447

Andrew Gorczyca, Audrey M. Decker

引用次数: 3

Design of Trusted B2B Market Platforms using Permissioned Blockchains and Game Theory 使用许可区块链和博弈论设计可信的B2B市场平台

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2019-05-01 DOI: 10.1109/BLOC.2019.8751472

Shivika Narang, Megha Byali, Pankaj Dayama, Vinayaka Pandit, Y. Narahari

{"title":"Design of Trusted B2B Market Platforms using Permissioned Blockchains and Game Theory","authors":"Shivika Narang, Megha Byali, Pankaj Dayama, Vinayaka Pandit, Y. Narahari","doi":"10.1109/BLOC.2019.8751472","DOIUrl":"https://doi.org/10.1109/BLOC.2019.8751472","url":null,"abstract":"Trusted collaboration satisfying the requirements of (a) adequate transparency and (b) preservation of privacy of business sensitive information is a key factor to ensure the success and adoption of online business-to-business (B2B) collaboration platforms. Our work proposes novel ways of stringing together game theoretic modeling, blockchain technology, and cryptographic techniques to build such a platform for B2B collaboration involving enterprise buyers and sellers who may be strategic. The B2B platform builds upon three ideas. The first is to use a permissioned blockchain with smart contracts as the technical infrastructure for building the platform. Second, the above smart contracts implement deep business logic which is derived using a rigorous analysis of a repeated game model of the strategic interactions between buyers and sellers to devise strategies to induce honest behavior from buyers and sellers. Third, we present a formal framework that captures the essential requirements for secure and private B2B collaboration, and, in this direction, we develop cryptographic regulation protocols that, in conjunction with the blockchain, help implement such a framework. We believe our work is an important first step in the direction of building a platform that enables B2B collaboration among strategic and competitive agents while maximizing social welfare and addressing the privacy concerns of the agents.","PeriodicalId":314490,"journal":{"name":"2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)","volume":"2006 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123771963","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

Scalable BFT Consensus Mechanism Through Aggregated Signature Gossip 基于聚合签名八卦的可扩展BFT共识机制

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2019-05-01 DOI: 10.1109/BLOC.2019.8751327

Jieyi Long, Ribao Wei

引用次数: 9

An Evaluation of Bitcoin Address Classification based on Transaction History Summarization 基于交易历史汇总的比特币地址分类评价

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2019-03-19 DOI: 10.1109/BLOC.2019.8751410

Yu-Jing Lin, Po-Wei Wu, Cheng-Han Hsu, I-Ping Tu, Shih-Wei Liao

{"title":"An Evaluation of Bitcoin Address Classification based on Transaction History Summarization","authors":"Yu-Jing Lin, Po-Wei Wu, Cheng-Han Hsu, I-Ping Tu, Shih-Wei Liao","doi":"10.1109/BLOC.2019.8751410","DOIUrl":"https://doi.org/10.1109/BLOC.2019.8751410","url":null,"abstract":"Bitcoin is a cryptocurrency that features a distributed, decentralized and trustworthy mechanism, which has made Bitcoin a popular global transaction platform. The transaction efficiency among nations and the privacy benefiting from address anonymity of the Bitcoin network have attracted many activities such as payments, investments, gambling, and even money laundering in the past decade. Unfortunately, some criminal behaviors which took advantage of this platform were not identified. This has discouraged many governments to support cryptocurrency. Thus, the capability to identify criminal addresses becomes an important issue in the cryptocurrency network. In this paper, we propose new features in addition to those commonly used in the literature to build a classification model for detecting abnormality of Bitcoin network addresses. These features include various high orders of moments of transaction time (represented by block height) which summarizes the transaction history in an efficient way. The extracted features are trained by supervised machine learning methods on a labeling category data set. The experimental evaluation shows that these features have improved the performance of Bitcoin address classification significantly. We evaluate the results under eight classifiers and achieve the highest Micro-Fl /Macro-F1 of 87% /86% with LightGBM.","PeriodicalId":314490,"journal":{"name":"2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129912392","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: 46

Permission less Block chains and Secure Logging 无权限区块链和安全日志

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2019-03-10 DOI: 10.1109/BLOC.2019.8751306

Chunpeng Ge, Siwei Sun, Pawel Szalachowski

引用次数: 8