[Busec] TOMORROW: Thu, March 23, 10:30am : Ale Chiesa micropays anonymously

Ran Canetti canetti at bu.edu
Wed Mar 22 14:41:59 EDT 2017

Thursday, March 23
Alessandro Chiesa: Decentralized Anonymous Micropayments
WhenThu, March 23, 10:30am – 12:00pm
WhereMCS 180 (Hariri) (map 
DescriptionAbstract: Micropayments are payments that are worth a few 
pennies. A challenge in achieving them is that payment networks charge 
fees that are high compared to “micro” sums of money. Wheeler (1996) and 
Rivest (1997) proposed probabilistic payments as a technique to achieve 
micropayments: a merchant receives a macro-value payment with a given 
probability so that, in expectation, he receives a micro-value payment. 
Despite much research and trial deployment, micropayment schemes have 
not seen adoption. The adoption of decentralized currencies such as 
Bitcoin (2009) and Zcash (2016) suggests that decentralized micropayment 
schemes are easier to deploy. I will talk about a new construction of 
decentralized anonymous micropayment schemes, which enable parties with 
access to a ledger to conduct offline probabilistic payments with one 
another, directly and privately.
Early lunch to follow.

BUsec Calendar: http://www.bu.edu/cs/busec/ <http://www.bu.edu/cs/busec/>
The busec seminar gratefully acknowledges the support of BU's Center for 
Reliable Information Systems and Cyber Security (RISCS).
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