Blockchain Workshop

Master workshop: off the chain

Weekend 30 June - 1 July 2018, 9:30 am - 9:30 pm
BERLINER FREIHEIT, Berliner Freiheit 2, 10785 Berlin

State channels are heralded as a scaling solution for cryptocurrencies. How and when can these be implemented?

State channels are heralded as a scaling solution for cryptocurrencies. How and when can these be implemented?
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Master workshop: off the chain
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In our two-day event, we focus on state channels as a second layer scaling solutions for cryptocurrencies.

State channels are heralded as a scaling solution for cryptocurrencies. It allows mutually distrustful participants to execute a contract locally amongst themselves, instead of the global blockchain. In a way, state channels allow participants to bypass interaction with the network and transaction fees, while maintaining similar security guarantees.
But state channels remain in their infancy and are not yet ready for prime time use.

How and when can these be implemented? Many have been in the pipeline for some time, so what’s the hold up?
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State channels and second layer solutions

Our event is set up to support the development of the second-layer solution by bringing together the most prominent researchers and engineers working on state channels.

Hopefully, we can share their knowledge with the wider community and collectively identify problems that others can pursue.


Joshua Lind
PhD Researcher at Imperial College London
Christian Decker
Core Tech Engineer at Blockstream
Ian Miers
Postdoctoral Researcher at Cornell Tech, Co-founder of Zcash
Jason Teutsch
Founder of TrueBit
Ethan Heilman
Co-founder of Commonwealthcrypto
Pedro Moreno Sanchez
PhD Researcher at Purdue University
Lefteris Karapetsas
Raiden Core Developer
Stefanie Roos
Postdoctoral Researcher at University of Waterloo
Sergio Demian Lerner
Cryptocurrency Security Consultant
Sebastian Faust
Professor at TU Darmstadt
Stefan Dziembowski
Associate Professor at University of Warsaw
Jeremy Longley
CTO at Funfair
Fabrice Drouin
CTO of Acinq
Iddo Bentov
Postdoctoral Associate ad Cornell University
Kristina Hostakova
PhD Researcher at TU Darmstadt
Christian Reitwiessner
Team Lead at Ethereum
Liam Horne
Co-founder of Counterfactual
Lisa Eckey
Applied Cryptography Researcher at TU Darmstadt
Harry Kalodner
PhD Researcher at Princeton University
Thomas Bertani
Founder and CEO of Oraclize
Surya Bakshi
Research Assistant at University of Illinois at Urbana-Champaign
Erik Bryn
Ember.js Core Team Member
Xiaozhou Li
Co-founder of Celer Network
Gert-Jaap Glasbergen
Software Developer at MIT DCI
Tom Close
Co-founder of Magmo
Patrick McCorry
Assistant Professor at King's College London
Jez San
CEO of Funfair


9:20 am — 9:30 am
Welcoming words
Patrick McCorry (Assistant Professor at King's College London)
9:30 am — 10:00 am
Multi-Hop Locks for Secure, Privacy-Preserving and Interoperable Payment-Channel Networks
Pedro Moreno Sanchez (PhD Researcher at Purdue University)
10:00 am — 10:30 am
Changing your Mind: Update Mechanisms for Off-Chain Contracts
Christian Decker (Core Tech Engineer at Blockstream)
10:30 am — 11:00 am
Bootstrapping LN: what we've learned
Fabrice Drouin (CEO and CTO of ACINQ)
Break 11:00 am — 11:30 am
11:30 am — 12:00 am
Scaling via Trusted Execution Environments
Thomas Bertani (Founder and CEO of Oraclize)
12:00 pm — 12:30 pm
xCrow Protocol for Fast Crosschain Atomic Swaps
Ethan Heilman (Co-founder of Commonwealthcrypto)
12:30 pm — 1:00 pm
Discreet Log Contracts: Private, Scalable Smart Contracts
Gert-Jaap Glasbergen (Software Developer at MIT DCI)
Lunch 1:00 pm — 2:00 pm
2:00 pm — 2:30 pm
Teechain: Payment channels using trusted execution environments
Joshua Lind (PhD Researcher at Imperial College London)
2:30 pm — 3:00 am
Privacy Preserving Routing
Stefanie Roos (Postdoctoral Researcher at University of Waterloo)
3:00 pm — 3:30 pm
Rethinking Off-Chain Payment Network Routing
Xiaozhou Li (Co-founder of Celer Network)
Break 3:30 pm — 4:30 pm
4:30 pm — 5:00 pm
If the blockchain is edited without breaking consensus, does it still make a sound?
Sergio Demian Lerner (Cryptocurrency Security Consultant)
5:00 pm — 5:30 pm
Verifying Off-Chain Computations
Christian Reitwiessner (Team Lead at Ethereum)
5:30 pm — 6:00 pm
FunFair - Fate Channels - the first generalised state channels to go live in a commercial product
Jeremy Longley (CTO at Funfair)
6:00 pm — 6:30 pm
Challenges for payment channels
Panel discussion
9:30 am — 10:00 am
Dogethereum: A collateralized, 2-way peg
Jason Teutsch (Founder of TrueBit)
10:00 am — 10:30 am
Anonymous payment channels for decentralized currencies
Ian Miers (Postdoctoral Researcher at Cornell Tech)
10:30 am — 11:00 am
Raiden: the payment channel network for Ethereum
Lefteris Karapetsas (Raiden Core Developer)
Break 11:00 am — 11:30 am
11:30 am — 12:00 pm
Sprites and state channels: payment networks that go faster than lightning
Patrick McCorry (Assistant Professor at King's College London)
12:00 pm — 12:30 pm
PISA: Arbitration outsourcing for state channels
Surya Bakshi (Research Assistant at University of Illinois at Urbana-Champaign)
12:30 pm — 1:00 pm
PERUN: Virtual Payment Hubs over Cryptographic Currencies
Lisa Eckey (Applied Cryptography Researcher at TU Darmstadt)
Lunch 1:00 pm — 2:00 pm
2:00 pm — 2:30 pm
General state channel networks
Kristina Hostakova (PhD Researcher at TU Darmstadt)
2:30 pm — 3:00 pm
Force-Move Games - a simple framework for n-party state channel interactions
Tom Close (Co-founder of Magmo)
3:00 pm — 3:30 pm
Counterfactual generalised state channels on Ethereum
Liam Horne (Co-founder of Counterfactual)
Break 3:30 pm — 4:30 pm
4:30 pm — 5:00 pm
Building DApps with generalized state channels & Ember.js
Erik Bryn (Ember.js Core Team Member)
5:00 pm — 5:30 pm
Virtue Poker: P2P decentralized poker on Ethereum
Iddo Bentov (Postdoctoral Associate at Cornell University)
5:30 pm — 6:00 pm
Arbitrum: Scalable Smart contracts
Harry Kalodner (PhD Researcher at Princeton University)
6:00 pm — 6:30 pm
Channeliscation- Useful or overkill?
Panel discussion


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