Distributed algorithmic mechanism design: recent results and future directions
DIALM '02 Proceedings of the 6th international workshop on Discrete algorithms and methods for mobile computing and communications
PPay: micropayments for peer-to-peer systems
Proceedings of the 10th ACM conference on Computer and communications security
Maintaining Trust in Peer-to-Peer Barter Relationships
SAINT-W '04 Proceedings of the 2004 Symposium on Applications and the Internet-Workshops (SAINT 2004 Workshops)
Peer-to-peer money: free currency over the internet
HSI'03 Proceedings of the 2nd international conference on Human.society@internet
The brighter side of risks in peer-to-peer barter relationships
Future Generation Computer Systems
SLA as a complementary currency in peer-2-peer markets
GECON'10 Proceedings of the 7th international conference on Economics of grids, clouds, systems, and services
Service level agreement as a complementary currency in peer-to-peer markets
Future Generation Computer Systems
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Peer-to-peer complementary currencies can be powerful tools for promoting exchanges and building sustainable relationships among selfish peers on the Internet. i-WAT[1] is a proposed such currency based on the WAT System, a polycentric complementary currency using WAT tickets as its media of exchange. Participants spontaneously issue and circulate the tickets as needed, whose values are backed up by chains of trust. i-WAT implements the tickets electronically by exchanging messages signed in OpenPGP. This paper claims that the design of i-WAT is incentive-compatible as to protection against moral hazards, or threats caused by selfish peers because they may take advantage of the rules; such hazards are defused in i-WAT if the participants react against misbehaviors of others by pursuing their own benefits. A reference implementation of i-WAT has been developed in the form of an XMPP instant messaging client. We have been putting the currency system into practical use since June 2004.