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We present DECORAIT; a decentralized registry through which content creators may assert their right to opt in or out of AI training as well as receive reward for their contributions. Generative AI (GenAI) enables images to be synthesized…

Cryptography and Security · Computer Science 2023-09-27 Kar Balan , Alex Black , Simon Jenni , Andrew Gilbert , Andy Parsons , John Collomosse

User-generated content platforms curate their vast repositories into thematic compilations that facilitate the discovery of high-quality material. Platforms that seek tight editorial control employ people to do this curation, but this…

Human-Computer Interaction · Computer Science 2020-08-13 Yan Chen , Andrés Monroy-Hernández , Ian Wehrman , Steve Oney , Walter S. Lasecki , Rajan Vaish

Crowdsourcing-based content moderation is a platform that hosts content moderation tasks for crowd workers to review user submissions (e.g. text, images and videos) and make decisions regarding the admissibility of the posted content, along…

Computer Science and Game Theory · Computer Science 2021-06-08 Sainath Sanga , Venkata Sriram Siddhardh Nadendla

In most websites, the online rating system provides the ratings of products and services to users. Lack of trust in data integrity and its manipulation has hindered fulfilling user satisfaction. Since existing online rating systems deal…

Cryptography and Security · Computer Science 2021-01-13 Monir Shaker , Fereidoon Shams Aliee , Reza Fotohi

We design and implement Publication Chain (PubChain), a decentralized open-access publication platform built on decentralized and distributed technologies of blockchain and IPFS peer-to-peer file sharing systems. The existing publication…

Cryptography and Security · Computer Science 2020-04-01 Taotao Wang , Soung Chang Liew , Shengli Zhang

Permissionless blockchains offer an information environment where users can interact privately without fear of censorship. Financial services can be programmatically coded via smart contracts to automate transactions without the need for…

General Finance · Quantitative Finance 2022-12-13 Kanis Saengchote

This paper develops a theoretical model to study the economic incentives for a social media platform to moderate user-generated content. We show that a self-interested platform can use content moderation as an effective marketing tool to…

General Economics · Economics 2023-04-20 Yi Liu , Pinar Yildirim , Z. John Zhang

Centralized search engines control what we see, read, believe, and vote. Consequently, they raise concerns over information control, censorship, and bias. Decentralized search engines offer a remedy to this problem, but their adoption has…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-09-19 Marcel Gregoriadis , Rowdy Chotkan , Petru Neague , Johan Pouwelse

In this paper, we consider decentralized sequential decision making in distributed online recommender systems, where items are recommended to users based on their search query as well as their specific background including history of bought…

Social and Information Networks · Computer Science 2015-03-25 Cem Tekin , Simpson Zhang , Mihaela van der Schaar

Since its advent in 2009, Bitcoin, a cryptography-enabled peer-to-peer digital payment system, has been gaining increasing attention from both academia and industry. An effort designed to overcome a cluster of bottlenecks inherent in…

Cryptography and Security · Computer Science 2021-05-18 Ling Cheng , Feida Zhu , Huiwen Liu , Chunyan Miao

Decentralized communication is becoming an important use case within Web3. On Ethereum, users can repurpose the transaction input data field to embed natural-language messages, commonly known as Input Data Messages (IDMs). However, as IDMs…

Cryptography and Security · Computer Science 2025-10-14 Xihan Xiong , Zhipeng Wang , Qin Wang , William Knottenbelt

Social networks have become an essential meeting point for millions of individuals willing to publish and consume huge quantities of heterogeneous information. Some studies have shown that the data published in these platforms may contain…

Cryptography and Security · Computer Science 2016-07-05 Alexandre Viejo , David Sánchez

A decentralized online petition system enables individuals or groups to create, sign, and share petitions without a central authority. Using blockchain technology, these systems ensure the integrity and transparency of the petition process…

Cryptography and Security · Computer Science 2024-07-02 Jagdeep Kaur , Kevin Antony , Nikhil Pujar , Ankit Jha

The pervasive rise of digital platforms has reshaped how individuals engage with information, with algorithms and peer influence playing pivotal roles in these processes. This study investigates the effects of algorithmic curation and peer…

General Economics · Economics 2025-03-26 Shan Huang , Yi Ji , Leyu Lin

Although there have been automated approaches and tools supporting toxicity censorship for social posts, most of them focus on detection. Toxicity censorship is a complex process, wherein detection is just an initial task and a user can…

Human-Computer Interaction · Computer Science 2025-05-23 Yaqiong Li , Peng Zhang , Hansu Gu , Tun Lu , Siyuan Qiao , Yubo Shu , Yiyang Shao , Ning Gu

Decentralization is emerging as a key feature of the future Internet. However, effective algorithms for search are missing from state-of-the-art decentralized technologies, such as distributed hash tables and blockchain. This is surprising,…

Social and Information Networks · Computer Science 2022-04-28 Nikolaos Giatsoglou , Emmanouil Krasanakis , Symeon Papadopoulos , Ioannis Kompatsiaris

Decentralization is a key indicator for the evaluation of public blockchains. In the past, there have been very few studies on measuring and comparing the actual level of decentralization between Proof-of-Work (PoW) blockchains and…

Cryptography and Security · Computer Science 2021-02-03 Chao Li , Balaji Palanisamy

We investigate how a blockchain can distill the collective belief of its nodes regarding the trustworthiness of a (sub)set of nodes into a {\em reputation system} that reflects the probability of correctly performing a task. To address this…

Computer Science and Game Theory · Computer Science 2025-10-13 Petros Drineas , Rohit Nema , Rafail Ostrovsky , Vassilis Zikas

Social media feed algorithms infer user preferences from their past behaviors. Yet what drives engagement often diverges from what users value. We examine this gap between stated preferences (what users say they prefer) and revealed…

Human-Computer Interaction · Computer Science 2026-04-14 Do Won Kim , Cody Buntain , Giovanni Luca Ciampaglia

The "Decentralised Web" (DW) is an evolving concept, which encompasses technologies aimed at providing greater transparency and openness on the web. The DW relies on independent servers (aka instances) that mesh together in a peer-to-peer…