Privacy Reunion

1st July 2023 in UNINE Faculté des Sciences


Neuchâtel, a flourishing hub of blockchain and encryption, invites you to explore the uncharted frontiers of privacy and meet the minds behind privacy-preserving technologies.


Here, unconventional thinkers converge, and boundaries vanish as we craft an alternative narrative for privacy in the digital age.


We gather to revive the true ethos of cryptocurrencies and the spirit of collaboration to reclaim sovereignty over our lives.


Let's take back control of our data and money. The time for privacy is now.

This will be a free event open to the public

Telegram Group of the Privacy Reunion


Please note that most sessions will be held in English


9:00 - 9:30

Awa Sun Yin: Size matters: Navigating the Pitfalls of Privacy-Preserving Architectures

This talk is an exploration of where privacy can go wrong in privacy-preserving architectures, from a chain analyst's POV. We'll explore everything from shielded transactions, to private execution vms (clarify that zkevm and zk bridges are not for privacy), and cross-chain / mutichain architectures. I also explore mechanisms and designs that can maximize onchain privacy for the user on a protocol level and on an end user level.

9:30 - 10:00

Maxim Orlovsky: Cyphernet: Unlocking Privacy & Empowering Self-Sovereignty

In the world where ever increasing surveillance has become the new norm, privacy is a necessity. But it’s not easy to build your own privacy setup, as it requires many components: resources, infrastructure and of most importantly - tools and protocols that can’t compromise or give away your data. 
Cyphernet is a Swiss non-profit whose goal is to provide technological means for protecting the sovereignty of both individuals and companies striving for economic freedom. From end-to-end encryption to self-sovereign identities and privacy-preserving networking apps - Cyphernet is there to help you build your own privacy-preserving setup, however complex you need it to be.

10:00 - 10:20

Simon Toth: Privacy-aware communities in the age of surveillance

Community building has mostly moved online - today we hang out in chatrooms with people from all around the world, and this is made possible by social media sites, and platforms such as Telegram or Discord. But all of these come at a cost: they constitute the engine of mass surveillance. Are privacy and community mutually exclusive today? If so, how do we change that?

10:20 - 11:00

Anonymous DAOs with Amir Taaki, Maxim Orlovsky and Serinko

11:00 - 11:30

Akaki Mamageishvili: Buying Time: Latency Racing vs. Bidding in Fair Transaction Ordering

"We design a practical algorithm for transaction ordering that takes into account both transaction timestamps and bids. The algorithm guarantees that users get their transactions published with bounded delay against a bid, while it extracts a fair value from sophisticated users that have an edge in latency, by moving expenditure from investment in latency improvement technology to bidding. The algorithm creates a score from timestamps and bids, and orders transactions based on the score. We first show that a scoring rule is the only rule that satisfies the independence of latency races. We provide an economic analysis of the protocol in an environment of private information, where investment in latency is made ex-ante or interim stages, while bidding happens at the interim stage where private signals have been observed. The algorithm is useful for transaction sequencing in rollups or in other environments where the sequencer has privileged access to order flows. We guarantee privacy of transactions and therefore, resistance to front-running using decentralized sequencing, which can be implemented using tools from Byzantine Fault Tolerant systems."

11:30 - 12:10

Serinko: Monero Privacy Workshop

An advanced guide to arm users with answers to what is Monero, why and how to use it. A practical introduction to threat models we face and privacy practices available today. 

12:10 - 12:30

Massimo Musumeci: Exploring the Power of LNURL: Dynamics of Involved Data

How important is usability for the large-scale adoption of Bitcoin? In this talk, we discuss LNURL as a UX protocol, which has been extensively tested and used. We see how it works and the data flow involved and how it manages to provide a simple user experience.

12:30 - 13:30

Lunch Break & Networking

13:30 - 14:00

Olga Ukolova: MyCitadel Wallet: The RGB based Wallet with Complex Multisigs & Unexplored Use Cases

Bitcoin ignited a new life into the notions of personal freedom and sovereignty, becoming one of the brightest flags that people could follow. But in their strive for freedom, many are still having a hard time to find proper tools to achieve and secure it. MyCitadel is the tool that helps both professionals, businesses and private individuals to maintain and operate their personal wealth and digital assets with dynamic time lock multisigs, RGB assets support and many other self-sovereign features. Join our workshop to learn more and play around with it.

14:00 - 14:30

Amir Taaki: Anonymous Set Proofs for Infinite Ring Size

The time is coming for crypto's return to principle, and Monero has a chance of becoming a market leader.

As they say "A rising tide raises all boats", and Monero being a large project would bring privacy as a narrative to the forefront of crypto. However Monero's achilles heel is the limited anonymity set or "ring size". This talk discusses current approaches being considered to upgrade the anonymity set, and presents original research on this topic.

14:30 - 15:00

Jordi Baylina: How to build a privacy roll up

In this talk, Jordi will explain how it would be possible to use the tooling used for creating the Polygon zkEVM to build a roll-up with private architecture.

15:00 - 15:30

Robin Linus: zkCoins: A payment system with strong privacy and scalability, combining a client-side validation protocol with validity proofs.

zkCoins is a novel layer-2 design with strong privacy and scalability properties. It combines client-side validation with a zero-knowledge proof system. The chain is reduced to a minimum base layer to prevent double spending. Most of the verification complexity is moved off-chain and communicated directly between the individual sender and recipient of a transaction. There are very few global consensus rules, which makes block validation simple. Not even a global UTXO set is required. The throughput scales to hundreds of transactions per second without sacrificing decentralization.

15:30 - 16:00

Rachel Rose O’Leary: Rise, anon: Lunarpunk and memetic warfare

Why privacy is losing the meme war and how DarkFi fixes this.

16:00 - 16:30

Lucas Meier: Beyond ZK: MPC on the Blockchain?

Everybody loves zero-knowledge (ZK) proofs, but sometimes they're not enough. This talk goes over the differences between ZK proofs and multiparty-computation (MPC), and why certain applications can't do with just ZK proofs. We also explore why MPC hasn't seen much adoption in decentralized applications so far.

16:30 - 17:10

The Reunion Panel: A Clash of Minds on Privacy Tech Approaches and Uniting Builders to Bring Privacy Mainstream.

17:10 - 17:30

Alain Brenzikofer: Balancing Privacy and Compliance with TEE-validated sidechains

How can we have reasonable privacy in web3 for the masses while still allowing law enforcement to do their job? Integritee is developing a massively scalable private tx sidechain for Polkadot which is validated by TEEs. In contrast to ZK approaches, our system allows to disclose data selectively without the consent of the subject - but governed by a decentralized court that verifies the evidence of crime supplied by law enforcement agencies.

Speakers of the Privacy Reunion

Jordi Baylina

Co-Founder of Polygon zkEVM

Akaki Mamageishvili

Research Scientist for Offchain Labs

Maxim Orlovsky

Founder of Cyphernet

Olga Ukolova

Founder & CEO de Pandora Prime

Awa Sun Yin

Co-founder of Anoma & Namada

Adrian Brink

Co-Founder of Anoma

Amir Taaki

DarkFi Developer

Rachel Rose O’Leary

DarkFi Developer

Massimo Musumeci

Physicist, Development at Denali LLC

Robin Linus

Co-founder of ZeroSync

Simon Toth

Head of Community at Nym


Developer Relations at Nym

Lucas Meier

Cryptographer, MSc Computer Science at EPFL

Alain Brenzikofer

Co-founder & CTO of Integritee AG

Frederic Martin

CTO of myDid

Alan Szepieniec

Co-founder of Neptune


Organizer & Founder of Privacy Guardians

Supporters & Sponsors of the Privacy Reunion

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