Dandelion: cooperative content distribution with robust incentives
ATC'07 2007 USENIX Annual Technical Conference on Proceedings of the USENIX Annual Technical Conference
Distributed architectures for electronic cash schemes: a survey
International Journal of Parallel, Emergent and Distributed Systems
Double spending protection for e-cash based on risk management
ISC'10 Proceedings of the 13th international conference on Information security
A new peer-to-peer micropayment protocol based on transferable debt token
Transactions on computational science X
Collusion in peer-to-peer systems
Computer Networks: The International Journal of Computer and Telecommunications Networking
Utilizing Layered Taxation to provide incentives in P2P streaming systems
Journal of Systems and Software
Peer-to-peer indirect reciprocity via personal currency
Journal of Parallel and Distributed Computing
Off-line incentive mechanism for long-term P2P backup storage
Computer Communications
Experiences in Developing a Micro-payment System for Peer-to-Peer Networks
International Journal of Information Technology and Web Engineering
Credible recommendation exchange mechanism for P2P reputation systems
Proceedings of the 28th Annual ACM Symposium on Applied Computing
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An electronic payment system ideally should provide security, anonymity, fairness, transferability and scalability. Existing payment schemes often lack either anonymity or scalability. In this paper we propose WhoPay, a peer-topeer payment system that provides all the above properties. For anonymity, we represent coins with public keys; for scalability, we distribute coin transfer load across all peers, rather than rely on a central entity such as the broker. This basic version of WhoPay is as secure and scalable as existing peer-to-peer payment schemes, while providing a much higher level of user anonymity. We also introduce the idea of real-time double spending detection by making use of distributed hash tables (DHT). Simulation results show that the majority of the system load is handled by the peers under typical peer availability, indicating that WhoPay should scale well.