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Distributed and Adversarial Resistant Workflow Execution on the Algorand Blockchain 算法和区块链上的分布式和抗对抗工作流执行
Financial Cryptography Workshops Pub Date : 2022-11-16 DOI: 10.48550/arXiv.2211.08695
Yibin Xu, Tijs Slaats, Boris Düdder, S. Debois, Haiqin Wu
{"title":"Distributed and Adversarial Resistant Workflow Execution on the Algorand Blockchain","authors":"Yibin Xu, Tijs Slaats, Boris Düdder, S. Debois, Haiqin Wu","doi":"10.48550/arXiv.2211.08695","DOIUrl":"https://doi.org/10.48550/arXiv.2211.08695","url":null,"abstract":"We provide a practical translation from the Dynamic Condition Response (DCR) process modelling language to the Transaction Execution Approval Language (TEAL) used by the Algorand blockchain. Compared to earlier implementations of business process notations on blockchains, particularly Ethereum, the present implementation is four orders of magnitude cheaper. This translation has the following immediate ramifications: (1) It allows decentralised execution of DCR-specified business processes in the absence of expensive intermediaries (lawyers, brokers) or counterparty risk. (2) It provides a possibly helpful high-level language for implementing business processes on Algorand. (3) It demonstrates that despite the strict limitations on Algorand smart contracts, they are powerful enough to encode models of a modern process notation.","PeriodicalId":257557,"journal":{"name":"Financial Cryptography Workshops","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115734931","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
Not so immutable: Upgradeability of Smart Contracts on Ethereum 并非不可变:以太坊智能合约的可升级性
Financial Cryptography Workshops Pub Date : 2022-06-01 DOI: 10.48550/arXiv.2206.00716
M. Salehi, Jeremy Clark, Mohammad Mannan
{"title":"Not so immutable: Upgradeability of Smart Contracts on Ethereum","authors":"M. Salehi, Jeremy Clark, Mohammad Mannan","doi":"10.48550/arXiv.2206.00716","DOIUrl":"https://doi.org/10.48550/arXiv.2206.00716","url":null,"abstract":"A smart contract that is deployed to a blockchain system like Ethereum is, under reasonable circumstances, expected to be immutable and tamper-proof. This is both a feature (promoting integrity and transparency) and a bug (preventing security patches and feature updates). Modern smart contracts use software tricks to enable upgradeability, raising the research questions of how upgradeability is achieved and who is authorized to make changes. In this paper, we summarize and evaluate six upgradeability patterns. We develop a measurement framework for finding how many upgradeable contracts are on Ethereum that use certain prominent upgrade patters. We find 1.4 million proxy contracts which 8,225 of them are unique upgradeable proxy contracts. We also measure how they implement access control over their upgradeability: about 50% are controlled by a single Externally Owned Address (EOA), and about 14% are controlled by multi-signature wallets in which a limited number of persons can change the whole logic of the contract.","PeriodicalId":257557,"journal":{"name":"Financial Cryptography Workshops","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129217487","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
An Empirical Study of Market Inefficiencies in Uniswap and SushiSwap Uniswap和SushiSwap市场无效率的实证研究
Financial Cryptography Workshops Pub Date : 2022-03-15 DOI: 10.48550/arXiv.2203.07774
Janine Berg, Robin Fritsch, Lioba Heimbach, Roger Wattenhofer
{"title":"An Empirical Study of Market Inefficiencies in Uniswap and SushiSwap","authors":"Janine Berg, Robin Fritsch, Lioba Heimbach, Roger Wattenhofer","doi":"10.48550/arXiv.2203.07774","DOIUrl":"https://doi.org/10.48550/arXiv.2203.07774","url":null,"abstract":"Decentralized exchanges are revolutionizing finance. With their ever-growing increase in popularity, a natural question that begs to be asked is: how efficient are these new markets? We find that nearly 30% of analyzed trades are executed at an unfavorable rate. Additionally, we observe that, especially during the DeFi summer in 2020, price inaccuracies across the market plagued DEXes. Uniswap and SushiSwap, however, quickly adapt to their increased volumes. We see an increase in market efficiency with time during the observation period. Nonetheless, the DEXes still struggle to track the reference market when cryptocurrency prices are highly volatile. During such periods of high volatility, we observe the market becoming less efficient - manifested by an increased prevalence in cyclic arbitrage opportunities.","PeriodicalId":257557,"journal":{"name":"Financial Cryptography Workshops","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130366928","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
A Short Survey on Business Models of Decentralized Finance (DeFi) Protocols 去中心化金融(DeFi)协议商业模式综述
Financial Cryptography Workshops Pub Date : 2022-02-15 DOI: 10.1007/978-3-031-32415-4_13
TengTeng Xu, Jiahua Xu
{"title":"A Short Survey on Business Models of Decentralized Finance (DeFi) Protocols","authors":"TengTeng Xu, Jiahua Xu","doi":"10.1007/978-3-031-32415-4_13","DOIUrl":"https://doi.org/10.1007/978-3-031-32415-4_13","url":null,"abstract":"","PeriodicalId":257557,"journal":{"name":"Financial Cryptography Workshops","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116305494","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
A First Approach to Risk-Limiting Audits for Single Transferable Vote Elections 单票可转让选举风险限制审计的第一种方法
Financial Cryptography Workshops Pub Date : 2021-12-18 DOI: 10.1007/978-3-031-32415-4_25
Michelle L. Blom, Peter J. Stuckey, Vanessa J. Teague, Damjan Vukcevic
{"title":"A First Approach to Risk-Limiting Audits for Single Transferable Vote Elections","authors":"Michelle L. Blom, Peter J. Stuckey, Vanessa J. Teague, Damjan Vukcevic","doi":"10.1007/978-3-031-32415-4_25","DOIUrl":"https://doi.org/10.1007/978-3-031-32415-4_25","url":null,"abstract":"","PeriodicalId":257557,"journal":{"name":"Financial Cryptography Workshops","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132422264","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
RemoteVote and SAFE Vote: Towards Usable End-to-End Verification for Vote-by-Mail RemoteVote和SAFE Vote:迈向可用的端到端邮件投票验证
Financial Cryptography Workshops Pub Date : 2021-11-16 DOI: 10.1007/978-3-031-32415-4_27
Braden L. Crimmins, Marshal Rhea, J. A. Halderman
{"title":"RemoteVote and SAFE Vote: Towards Usable End-to-End Verification for Vote-by-Mail","authors":"Braden L. Crimmins, Marshal Rhea, J. A. Halderman","doi":"10.1007/978-3-031-32415-4_27","DOIUrl":"https://doi.org/10.1007/978-3-031-32415-4_27","url":null,"abstract":"","PeriodicalId":257557,"journal":{"name":"Financial Cryptography Workshops","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115184606","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: 1
A Scalable Architecture for Electronic Payments 电子支付的可扩展架构
Financial Cryptography Workshops Pub Date : 2021-10-26 DOI: 10.1007/978-3-031-32415-4_38
Geoffrey Goodell, Hazem D. R. Toliver, Danny Nakib
{"title":"A Scalable Architecture for Electronic Payments","authors":"Geoffrey Goodell, Hazem D. R. Toliver, Danny Nakib","doi":"10.1007/978-3-031-32415-4_38","DOIUrl":"https://doi.org/10.1007/978-3-031-32415-4_38","url":null,"abstract":"","PeriodicalId":257557,"journal":{"name":"Financial Cryptography Workshops","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122372078","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
Protocol-based Smart Contract Generation 基于协议的智能合约生成
Financial Cryptography Workshops Pub Date : 2021-08-05 DOI: 10.1007/978-3-031-32415-4_34
Afonso Falcao, Andreia Mordido, V. Vasconcelos
{"title":"Protocol-based Smart Contract Generation","authors":"Afonso Falcao, Andreia Mordido, V. Vasconcelos","doi":"10.1007/978-3-031-32415-4_34","DOIUrl":"https://doi.org/10.1007/978-3-031-32415-4_34","url":null,"abstract":"","PeriodicalId":257557,"journal":{"name":"Financial Cryptography Workshops","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122375997","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: 1
Optimal Fees for Geometric Mean Market Makers 几何平均做市商的最优收费
Financial Cryptography Workshops Pub Date : 2021-04-01 DOI: 10.1007/978-3-662-63958-0_6
A. Evans, Guillermo Angeris, Tarun Chitra
{"title":"Optimal Fees for Geometric Mean Market Makers","authors":"A. Evans, Guillermo Angeris, Tarun Chitra","doi":"10.1007/978-3-662-63958-0_6","DOIUrl":"https://doi.org/10.1007/978-3-662-63958-0_6","url":null,"abstract":"","PeriodicalId":257557,"journal":{"name":"Financial Cryptography Workshops","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125542325","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: 28
On-Chain Auctions with Deposits 有存款的连锁拍卖
Financial Cryptography Workshops Pub Date : 2021-03-30 DOI: 10.1007/978-3-031-32415-4_14
Jan Christoph Schlegel, A. Mamageishvili
{"title":"On-Chain Auctions with Deposits","authors":"Jan Christoph Schlegel, A. Mamageishvili","doi":"10.1007/978-3-031-32415-4_14","DOIUrl":"https://doi.org/10.1007/978-3-031-32415-4_14","url":null,"abstract":"","PeriodicalId":257557,"journal":{"name":"Financial Cryptography Workshops","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115265805","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: 4
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