A trustless Ethereum mixer using zero-knowledge signalling by Wei Jie Koh, Barry WhiteHat (Devcon5)
Channel: Ethereum Foundation
Date: 2019-12-31

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https://archive.devcon.org/archive/watch/5/hands-on-applications-of-zero-knowledge-signalling

Semaphore is a generalised zero-knowledge signalling system which can be deployed to fulfil various privacy use cases, such as a mixer and anonymous whistleblowing. This  hands-on workshop will guide participants through a high-level explanation of how Semaphore and zero-knowledge proofs work, and guide them through an anonymous chat app integrated with POAP tokens which can generate and verify said proofs. No programming or zk-SNARK knowledge is needed.

Speaker(s): Wei Jie Koh, Barry Whitehat
Skill level: beginner
Track: Privacy
Keywords: technical

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Devcon is the Ethereum conference for developers, researchers, thinkers, and makers. 
Devcon 5 was held in Osaka, Japan on Oct 8 - 11, 2019.
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