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Notarization is a procedure that enhance data management by ensuring the authentication of data during audits, thereby increasing trust in the audited data. Blockchain is frequently used as a secure, immutable, and transparent storage,…

Cryptography and Security · Computer Science 2025-01-09 Domenico Tortola , Claudio Felicioli , Andrea Canciani , Fabio Severino

In shaping the Internet of Money, the application of blockchain and distributed ledger technologies (DLTs) to the financial sector triggered regulatory concerns. Notably, while the user anonymity enabled in this field may safeguard privacy…

Cryptography and Security · Computer Science 2023-03-21 Nadia Pocher , Mirko Zichichi , Fabio Merizzi , Muhammad Zohaib Shafiq , Stefano Ferretti

We study the task of generating profitable Non-Fungible Token (NFT) images from user-input texts. Recent advances in diffusion models have shown great potential for image generation. However, existing works can fall short in generating…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Huiguo He , Tianfu Wang , Huan Yang , Jianlong Fu , Nicholas Jing Yuan , Jian Yin , Hongyang Chao , Qi Zhang

Permissionless blockchains (e.g., Bitcoin, Ethereum, etc) have shown a wide success in implementing global scale peer-to-peer cryptocurrency systems. In such blockchains, new currency units are generated through the mining process and are…

Databases · Computer Science 2019-05-24 Victor Zakhary , Mohammad Javad Amiri , Sujaya Maiyya , Divyakant Agrawal , Amr El Abbadi

Blockchain provides the unique and accountable channel for financial forensics by mining its open and immutable transaction data. A recent surge has been witnessed by training machine learning models with cryptocurrency transaction data for…

Cryptography and Security · Computer Science 2023-06-13 Youssef Elmougy , Ling Liu

Inspired by the success of foundation models in applications such as ChatGPT, as graph data has been ubiquitous, one can envision the far-reaching impacts that can be brought by Graph Foundation Models (GFMs) with broader applications in…

Machine Learning · Computer Science 2024-11-12 Zehong Wang , Zheyuan Zhang , Nitesh V Chawla , Chuxu Zhang , Yanfang Ye

There is an ongoing competition among blockchain technologies and the existence of one ultimate blockchain is impossible for many reasons. On the other hand, such variety can create difficulties in adoption, especially for the governments…

Cryptography and Security · Computer Science 2020-07-24 Oleksii Konashevych

The anonymity of blockchain has accelerated the growth of illegal activities and criminal behaviors on cryptocurrency platforms. Although decentralization is one of the typical characteristics of blockchain, we urgently call for effective…

Social and Information Networks · Computer Science 2022-01-25 Jie Shen , Jiajun Zhou , Yunyi Xie , Shanqing Yu , Qi Xuan

We present Charlotte, a framework for composable, authenticated distributed data structures. Charlotte data is stored in blocks that reference each other by hash. Together, all Charlotte blocks form a directed acyclic graph, the blockweb;…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-05-13 Isaac Sheff , Xinwen Wang , Haobin Ni , Robbert van Renesse , Andrew C. Myers

Non-Fungible Token (NFT) markets are one of the fastest growing digital markets today, with the sales during the third quarter of 2021 exceeding $10 billions! Nevertheless, these emerging markets - similar to traditional emerging…

Social and Information Networks · Computer Science 2023-07-19 Konstantinos Pelechrinis , Xin Liu , Prashant Krishnamurthy , Amy Babay

While transactions with cryptocurrencies such as Ethereum are becoming more prevalent, fraud and other criminal transactions are not uncommon. Graph analysis algorithms and machine learning techniques detect suspicious transactions that…

Machine Learning · Computer Science 2022-07-05 Hiroki Kanezashi , Toyotaro Suzumura , Xin Liu , Takahiro Hirofuchi

Graph Neural Networks (GNNs) are neural models that leverage the dependency structure in graphical data via message passing among the graph nodes. GNNs have emerged as pivotal architectures in analyzing graph-structured data, and their…

Machine Learning · Computer Science 2024-03-19 Xu Zheng , Farhad Shirani , Tianchun Wang , Wei Cheng , Zhuomin Chen , Haifeng Chen , Hua Wei , Dongsheng Luo

Many classical blockchains are known to have an embarrassingly low transaction throughput, down to Bitcoin's notorious seven transactions per second limit.Various proposals and implementations for increasing throughput emerged in the first…

Cryptography and Security · Computer Science 2023-03-08 Lioba Heimbach , Quentin Kniep , Yann Vonlanthen , Roger Wattenhofer

The NFT ecosystem represents an interconnected, decentralized environment that encompasses the creation, distribution, and trading of Non-Fungible Tokens (NFTs), where key actors, such as marketplaces, sellers, and buyers, utilize smart…

Software Engineering · Computer Science 2025-12-22 Yujing Chen , Xuanming Liu , Zhiyuan Wan , Zuobin Wang , David Lo , Difan Xie , Xiaohu Yang

Blockchain has come a long way: a system that was initially proposed specifically for cryptocurrencies is now being adapted and adopted as a general-purpose transactional system. As blockchain evolves into another data management system,…

Databases · Computer Science 2021-01-18 Pingcheng Ruan , Tien Tuan Anh Dinh , Dumitrel Loghin , Meihui Zhang , Gang Chen , Qian Lin , Beng Chin Ooi

Cryptocurrencies aim to replicate physical cash in the digital realm while removing centralized and trusted intermediaries. Decentralization is achieved by the blockchain, a permanent public ledger that contains a record of every…

Cryptography and Security · Computer Science 2024-06-04 Domokos Miklós Kelen , István András Seres

Distributed Ledger Technology (DLT) has been introduced using the most common consensus algorithm either for an electronic cash system or a decentralized programmable assets platform which provides general services. Most established…

Cryptography and Security · Computer Science 2023-04-19 Ahmad J. Alkhodair , Saraju P. Mohanty , Elias Kougianos

We present a novel method for a multi-party, zero-trust validator infrastructure deployment arrangement via smart contracts to secure Proof-of-Stake (PoS) blockchains. The proposed arrangement architecture employs a combination of…

Cryptography and Security · Computer Science 2023-08-03 Scott Seidenberger , Alec Sokol , Anindya Maiti

A Unitychain is a novel blockchain-like structure that drastically improves transaction scalability and security while maintaining ongoing network performance, even if participating nodes are required to perform a new Distributed Key…

Cryptography and Security · Computer Science 2021-01-22 Joshua D. Tobkin

Blockchain Technology has revolutionized Finance and Technology with its secure, decentralized, and trust-less methodologies of data management. In a world where asset value fluctuations are unprecedented, it has become increasingly…

Cryptography and Security · Computer Science 2025-02-11 Aaryan Sinha , Raja Muthalagu , Pranav Pawar , Alavikunhu Panthakkan , Shadi Atalla