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- research-articleSeptember 2024
Card Payment Protocol for Cryptocurrencies with Payment Channel Network
Distributed Ledger Technologies: Research and Practice (DLT), Volume 3, Issue 3Article No.: 19, Pages 1–30https://doi.org/10.1145/3653681Cryptocurrency, despite the upsurge as a speculative investment, is still a long way from being people’s money. The extreme technicality poses a significant barrier for the general public to adopt it as a medium of exchange. Therefore, simplifying the ...
- short-paperMay 2024
Deanonymizing Transactions Originating from Monero Tor Hidden Service Nodes
WWW '24: Companion Proceedings of the ACM Web Conference 2024Pages 678–681https://doi.org/10.1145/3589335.3651487Monero is a privacy-focused cryptocurrency that incorporates anonymity networks (such as Tor and I2P) and deploys the Dandelion++ protocol to prevent malicious attackers from linking transactions with their source IPs. However, this paper highlights a ...
Characterizing the Solana NFT Ecosystem
WWW '24: Companion Proceedings of the ACM Web Conference 2024Pages 766–769https://doi.org/10.1145/3589335.3651478Non-Fungible Tokens (NFTs) are digital assets recorded on the blockchain, providing cryptographic proof of ownership over digital or physical items. Although Solana has only begun to gain popularity in recent years, its NFT market has seen substantial ...
- short-paperMay 2024
Incentives in the Ether: Practical Cryptocurrency Economics & Security
WWW '24: Companion Proceedings of the ACM Web Conference 2024Pages 1230–1233https://doi.org/10.1145/3589335.3651268Cryptocurrencies are becoming increasingly important for the modern economy. Prior literature focuses on aligning actor incentives to ensure the secure and efficient operation of cryptocurrencies against adversarial threats that are unobserved in the ...
- research-articleMay 2024
DenseFlow: Spotting Cryptocurrency Money Laundering in Ethereum Transaction Graphs
WWW '24: Proceedings of the ACM Web Conference 2024Pages 4429–4438https://doi.org/10.1145/3589334.3645692In recent years, money laundering crimes on blockchain, especially on Ethereum, have become increasingly rampant, resulting in substantial losses. The unique features of money laundering on Ethereum, such as decentralization and pseudonymity, pose new ...
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- research-articleMay 2024
Identifying Risky Vendors in Cryptocurrency P2P Marketplaces
WWW '24: Proceedings of the ACM Web Conference 2024Pages 99–110https://doi.org/10.1145/3589334.3645475Peer-to-Peer (P2P) cryptocurrency exchanges are two-sided marketplaces, similar to eBay, where individuals can offer to sell cryptocurrencies in exchange for payment. Due to disintermediation, these marketplaces trade off increased privacy for higher ...
- research-articleAugust 2024
A Comprehensive Cryptocurrency approach based on a customized peer-to-peer network
NISS '24: Proceedings of the 7th International Conference on Networking, Intelligent Systems and SecurityArticle No.: 11, Pages 1–12https://doi.org/10.1145/3659677.3659699Creating a blockchain, particularly a cryptocurrency, is a complex task that demands a profound understanding of the technical, economic, legal, and social challenges it faces. In this work, we seek to explore the various technical obstacles hindering ...
- research-articleApril 2024
Gamification and Gaming in Cryptocurrency Education: A Survey with Cryptocurrency Investors and Potential Investors
Simulation and Gaming (SIMG), Volume 55, Issue 2Pages 196–223https://doi.org/10.1177/10468781231223762IntroductionIn recent years, cryptocurrency has increasingly sparked interest among investors. Many people have invested in this field without adequate knowledge. Existing research has shown that using game design elements can be an effective method of ...
- research-articleApril 2024
An application of ADCC-GARCH and wavelet coherence to explore connectedness between stock markets and cryptocurrencies
International Journal of Electronic Finance (IJEF), Volume 13, Issue 2Pages 168–195https://doi.org/10.1504/ijef.2024.137634The current study aims to explore the dynamic connectedness between stock and cryptocurrency markets and to determine the role of cryptocurrencies in the stock market as a hedge, diversifier, or safe haven. The study uses daily data of four stock indices ...
- research-articleFebruary 2024
Performance analysis of consensus protocols in distributed systems
International Journal of Internet Technology and Secured Transactions (IJITST), Volume 13, Issue 3Pages 217–231https://doi.org/10.1504/ijitst.2024.136654Consensus algorithms play the significant role in any blockchain system since it has to prove its performance and security. Hence, there is a need to identify the curbs of various consensus algorithms. The features of several kinds of blockchain systems ...
- research-articleDecember 2023
From Asset Flow to Status, Action, and Intention Discovery: Early Malice Detection in Cryptocurrency
ACM Transactions on Knowledge Discovery from Data (TKDD), Volume 18, Issue 3Article No.: 50, Pages 1–27https://doi.org/10.1145/3626102Cryptocurrency has been subject to illicit activities probably more often than traditional financial assets due to the pseudo-anonymous nature of its transacting entities. An ideal detection model is expected to achieve all three critical properties of ...
- research-articleDecember 2023
FraudLens: Graph Structural Learning for Bitcoin Illicit Activity Identification
ACSAC '23: Proceedings of the 39th Annual Computer Security Applications ConferencePages 324–336https://doi.org/10.1145/3627106.3627200Illicit activity in cryptocurrency has increased dramatically over the years. Bitcoin mechanics allow for users to mask their identity through obfuscation techniques. Much research has been published in the domain of identifying illicit activity in ...
- research-articleNovember 2023
Uncle Maker: (Time)Stamping Out The Competition in Ethereum
CCS '23: Proceedings of the 2023 ACM SIGSAC Conference on Computer and Communications SecurityPages 135–149https://doi.org/10.1145/3576915.3616674We present and analyze an attack on Ethereum 1's consensus mechanism, which allows miners to obtain higher mining rewards compared to their honest peers. This attack is novel in that it relies on manipulating block timestamps and the difficulty-...
- research-articleNovember 2023
Short Privacy-Preserving Proofs of Liabilities
CCS '23: Proceedings of the 2023 ACM SIGSAC Conference on Computer and Communications SecurityPages 1805–1819https://doi.org/10.1145/3576915.3616645In the wake of fraud scandals involving decentralized exchanges and the significant financial loss suffered by individuals, regulators are pressed to put mechanisms in place that enforce customer protections and capital requirements in decentralized ...
- research-articleNovember 2023
CryptoConcurrency: (Almost) Consensusless Asset Transfer with Shared Accounts
CCS '23: Proceedings of the 2023 ACM SIGSAC Conference on Computer and Communications SecurityPages 1556–1570https://doi.org/10.1145/3576915.3616587A typical blockchain protocol uses consensus to make sure that mutually mistrusting users agree on the order in which their operations on shared data are executed. However, it is known that asset transfer systems, by far the most popular application of ...
- surveyNovember 2023
Economic Systems in the Metaverse: Basics, State of the Art, and Challenges
- Huang Huawei,
- Zhang Qinnan,
- Li Taotao,
- Yang Qinglin,
- Yin Zhaokang,
- Wu Junhao,
- Zehui Xiong,
- Zhu Jianming,
- Jiajing Wu,
- Zibin Zheng
ACM Computing Surveys (CSUR), Volume 56, Issue 4Article No.: 99, Pages 1–33https://doi.org/10.1145/3626315Economic systems play pivotal roles in the metaverse. However, we have not yet found an overview that systematically introduces economic systems for the metaverse. Therefore, we review the state-of-the-art solutions, architectures, and systems related to ...
- research-articleNovember 2023
Why Fixed Costs Matter for Proof-of-Work–Based Cryptocurrencies
We assess how the cost structure of cryptocurrency mining affects the response of miners to exchange rate fluctuations and the immutability of cryptocurrency ledgers that rely on proof-of-work. We show that the amount of mining power supplied to ...
- research-articleNovember 2023
A Model of Cryptocurrencies
We model cryptocurrencies as utility tokens used by a decentralized digital platform to facilitate transactions between users of certain goods or services. The network effect governing user participation, in conjunction with the nonneutrality of the token ...
- research-articleNovember 2023
StableFees: A Predictable Fee Market for Cryptocurrencies
Blockchain-based cryptocurrencies must solve the problem of assigning priorities to competing transactions. The most widely used mechanism involves each transaction offering a fee to be paid once the transaction is processed, but this discriminatory price ...
- research-articleNovember 2023
Crypto Wash Trading
Management Science (MANS), Volume 69, Issue 11Pages 6427–6454https://doi.org/10.1287/mnsc.2021.02709We present the first systematic approach to detect fake transactions on cryptocurrency exchanges by exploiting robust statistical and behavioral regularities associated with authentic trading. Our sample consists of 29 centralized exchanges, among which ...