2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)最新文献_第8页

MTFS: Merkle-Tree-Based File System MTFS:基于默克尔树的文件系统

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2019-02-25 DOI: 10.1109/BLOC.2019.8751389

Jia Kan, Kyeong Soo Kim

{"title":"MTFS: Merkle-Tree-Based File System","authors":"Jia Kan, Kyeong Soo Kim","doi":"10.1109/BLOC.2019.8751389","DOIUrl":"https://doi.org/10.1109/BLOC.2019.8751389","url":null,"abstract":"The blockchain technology has been changing our daily lives since Bitcoin–-i.e., the first decentralized cryptocurrency–-was invented and released as open-source software by an unidentified person or a group called Satoshi Nakamoto in 2009. Of many applications which can be implemented based on the blockchain, storage is an important one, a notable example of which is the InterPlanetary File System (IPFS). IPFS is a distributed web based on a peer-to-peer hypermedia protocol to make the web faster, safer, and more open and focuses on public accessible files. To provide a solution for private file storage in the blockchain way, in this paper we propose a Merkle-tree-based File System (MTFS). In MTFS, the blockchain is more than a trust machine; it is an abstract of a cluster system. Distributed random nodes form a tree network cluster without a central controller to provide a secure private storage service and faster message propagation. Advance proxy re-encryption algorithm is applied to guarantee secure file exchanges under permission. Merkle tree will make sure that the files are distributed among the service nodes in a balanced way. The proposed MTFS can be used not only for personal file storage and exchange but also for industry requiring mutual trust in file uploading and downloading in making contracts like insurances.","PeriodicalId":314490,"journal":{"name":"2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124921655","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: 11

Probabilistic Smart Contracts: Secure Randomness on the Blockchain 概率智能合约:区块链上的安全随机性

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2019-02-21 DOI: 10.1109/BLOC.2019.8751326

K. Chatterjee, A. K. Goharshady, Arash Pourdamghani

引用次数: 52

Energy-recycling Blockchain with Proof-of-Deep-Learning 具有深度学习证明的能源回收区块链

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2019-02-11 DOI: 10.1109/BLOC.2019.8751419

Changhao Chenli, Boyang Li, Yiyu Shi, Taeho Jung

引用次数: 40

Punishment not Reward: Disincentivising Blockchain Application Misbehaviour 惩罚而非奖励:抑制区块链应用程序的不当行为

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2019-02-11 DOI: 10.1109/BLOC.2019.8751232

R. Banach

引用次数: 5

Verifiable Smart Contract Portability 可验证的智能合约可移植性

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2019-02-11 DOI: 10.1109/BLOC.2019.8751335

Martin Westerkamp

{"title":"Verifiable Smart Contract Portability","authors":"Martin Westerkamp","doi":"10.1109/BLOC.2019.8751335","DOIUrl":"https://doi.org/10.1109/BLOC.2019.8751335","url":null,"abstract":"With the advent of blockchain technologies, the idea of decentralized applications has gained traction. Smart contracts permit the implementation of application logic to foster distributed systems that are capable of removing intermediaries. Hereby, lock in effects originating from isolated data storage and central authorities are mitigated. Yet, smart contracts deployed to a ledger generate dependencies on the underlying blockchain. Over time, requirements regarding contract execution may detach from the utilized blockchain due to contradicting incentives and security or performance issues. To avoid a novel form of lock in effect towards a host blockchain, we introduce a concept for smart contract portability that permits any user to migrate contract logic and state between blockchains in a flexible and verifiable manner. As the Ethereum Virtual Machine (EVM) is supported by a multitude of blockchain implementations, it poses a common execution environment for smart contracts. We provide a toolbox that facilitates smart contract portability between EVM-compatible blockchains without trust requirements in the entity executing the migration process. To prove the concept’s soundness, we transfer token contracts based on the ERC20 standard as well as applications containing dependencies to other smart contracts. Our evaluation shows the validity of ported applications including their current states.","PeriodicalId":314490,"journal":{"name":"2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121165357","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: 16

Peer-to-Peer EnergyTrade: A Distributed Private Energy Trading Platform 点对点能源交易:分布式私有能源交易平台

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2018-12-20 DOI: 10.1109/BLOC.2019.8751268

A. Dorri, Ambrose Hill, S. Kanhere, R. Jurdak, F. Luo, Z. Dong

引用次数: 19

Enhancing Engagement in Token-Curated Registries via an Inflationary Mechanism 通过通货膨胀机制加强对代币管理注册的参与

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2018-11-23 DOI: 10.1109/BLOC.2019.8751443

Yi Wang, B. Krishnamachari

{"title":"Enhancing Engagement in Token-Curated Registries via an Inflationary Mechanism","authors":"Yi Wang, B. Krishnamachari","doi":"10.1109/BLOC.2019.8751443","DOIUrl":"https://doi.org/10.1109/BLOC.2019.8751443","url":null,"abstract":"Token Curated Registries (TCR) are decentralized recommendation systems that can be implemented using Blockchain smart contracts. They allow participants to vote for or against adding items to a list through a process that involves staking tokens intrinsic to the registry, with winners receiving the staked tokens for each vote. A TCR aims to provide incentives to create a well-curated list. In this work, we consider a challenge for these systems - incentivizing token-holders to actually engage and participate in the voting process. We propose a novel token-inflation mechanism for enhancing engagement, whereby only voting participants see their token supply increased by a predefined multiple after each round of voting. To evaluate this proposal, we propose a simple 4-class model of voters that captures all possible combinations of two key dimenions: whether they are engaged (likely to vote at all for a given item) or disengaged, and whether they are informed (likely to vote in a way that increases the quality of the list) or uninformed, and a simple metric to evaluate the quality of the list as a function of the vote outcomes. We conduct simulations using this model of voters and show that implementing token-inflation results in greater wealth accumulation for engaged voters. In particular, when the number of informed voters is sufficiently high, our simulations show that voters that are both informed and engaged see the greatest benefits from participating in the registry when our proposed token-inflation mechanism is employed.","PeriodicalId":314490,"journal":{"name":"2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115709986","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: 5

Blockchain based Proxy Re-Encryption Scheme for Secure IoT Data Sharing 基于区块链的物联网数据安全共享代理重加密方案

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2018-11-06 DOI: 10.1109/BLOC.2019.8751336

Ahsan Manzoor, Madhusanka Liyanage, An Braeken, S. Kanhere, M. Ylianttila

引用次数: 91

Promoting Distributed Trust in Machine Learning and Computational Simulation 促进机器学习和计算仿真中的分布式信任

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2018-10-25 DOI: 10.1109/BLOC.2019.8751423

N. Bore, R. Raman, Isaac M. Markus, S. Remy, Oliver E. Bent, M. Hind, E. Pissadaki, B. Srivastava, R. Vaculín, Kush R. Varshney, Komminist Weldemariam

引用次数: 8

Solving the Buyer and Seller’s Dilemma: A Dual-Deposit Escrow Smart Contract for Provably Cheat-Proof Delivery and Payment for a Digital Good without a Trusted Mediator 解决买方和卖方的困境:在没有可信中介的情况下，为数字商品提供可证明的防欺诈交付和支付的双存款托管智能合约

2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC) Pub Date : 2018-06-21 DOI: 10.1109/BLOC.2019.8751482

Aditya Asgaonkar, B. Krishnamachari

{"title":"Solving the Buyer and Seller’s Dilemma: A Dual-Deposit Escrow Smart Contract for Provably Cheat-Proof Delivery and Payment for a Digital Good without a Trusted Mediator","authors":"Aditya Asgaonkar, B. Krishnamachari","doi":"10.1109/BLOC.2019.8751482","DOIUrl":"https://doi.org/10.1109/BLOC.2019.8751482","url":null,"abstract":"A fundamental problem for electronic commerce is the buying and selling of digital goods between individuals that may not know or trust each other. Traditionally, this problem has been addressed by the use of trusted third-parties such as credit-card companies, mediated escrows, legal adjudication, or reputation systems. Despite the rise of blockchain protocols as a way to send payments without trusted third parties, the important problem of exchanging a digital good for payment without trusted third parties has been paid much less attention. We refer to this problem as the Buyer and Seller’s Dilemma and present for it a dual-deposit escrow trade protocol which uses double-sided payment deposits in conjunction with simple cryptographic primitives, and that can be implemented using a blockchain-based smart contract. We analyze our protocol as an extensive-form game and prove that the Sub-game Perfect Nash Equilibrium for this game is for both the buyer and seller to cooperate and behave honestly. We address this problem under the assumption that the digital good being traded is known and verifiable, with a fixed price known to both parties.","PeriodicalId":314490,"journal":{"name":"2019 IEEE International Conference on Blockchain and Cryptocurrency (ICBC)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126259648","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: 71