Conditional E-Cash
Radu Sion, Stony Brook University
We introduce a novel conditional e-cash protocol allowing future anonymous
cashing of bank-issued e-money only upon the satisfaction of an agreed-upon
public condition. Payers are able to remunerate payees for services that
depend on future, yet to be determined outcomes of events. Once payment
complete, any double-spending attempt by the payer will reveal its identity;
no double-spending by the payee is possible. Payers can not be linked to
payees or to ongoing or past transactions. The flow of cash within the
system is thus both correct and anonymous. We discuss several applications
of conditional e-cash including online trading of financial securities,
prediction markets, and betting systems.
24 April (Tuesday) at 1630 hrs
Gates 4B (opposite 490)