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October 6th
08:30
(30 min)
הרשמה

Introduction

09:00
(10 min)
Introduction to Event
09:10
(25 min)
Invited Talk: Deploying Blockchain At Scale. Lessons from the Internet Deployment in Japan.
PRESENTER(s):
Professor Jun Murai (Keio University)

Current State of Bitcoin

09:35
(30 min)
An Analysis of Dust in UTXO based Cryptocurrencies
PRESENTER(s):
Cristina Pérez-Solà, Sergi Delgado Segura, Guillermo Navarro-Arribas and Jordi Herrera (Universitat Autònoma de Barcelona)
10:05
(30 min)
How Much Privacy is Enough? Threats, Scaling, and Trade-offs in Blockchain Privacy Protocols
PRESENTER(s):
Ian Miers (Cornell Tech)
10:35
(15 min)
Break

On-Chain Scaling

10:50
(30 min)
Playing With Fire: Adjusting Bitcoin's Block Subsidy
PRESENTER(s):
Anthony Towns (Xapo)
11:20
(30 min)
Self-Reproducing Coins as Universal Turing Machine
PRESENTER(s):
Dmitry Meshkov, Alexander Chepurnoy and Vasily Kharin (Ergo Platform)
11:50
(30 min)
Forward Blocks: On-chain/Settlement Capacity Increases Without the Hard-fork
PRESENTER(s):
Mark Friedenbach
12:20
(90 min)
Lunch

Scaling Security

13:50
(30 min)
Compact Multi-Signatures for Smaller Blockchains
PRESENTER(s):
Dan Boneh (Stanford University), Manu Drijvers and Gregory Neven (DFINITY)
14:20
(30 min)
Improving SPV Client Validation and Security with Fraud Proofs
PRESENTER(s):
Mustafa Al-Bassam (University College London)
14:50
(30 min)
A Scalable Drop-in Replacement for Merkle Trees
PRESENTER(s):
Benedikt Bünz, Benjamin Fisch and Dan Boneh (Stanford University)
15:20
(15 min)
Break

Scriptless Scripts and Multi-party Channels

15:35
(30 min)
Multi-party Channels in the UTXO Model: Challenges and Opportunities
PRESENTER(s):
Olaoluwa Osuntokun (Lightning Labs)
16:05
(30 min)
Multi-Hop Locks for Secure, Privacy-Preserving and Interoperable Payment-Channel Networks
PRESENTER(s):
Giulio Malavolta (Friedrich-Alexander-University Erlangen-Nuernberg), Pedro Moreno-Sanchez (Purdue University), Clara Schneidewind (Vienna University of Technology), Aniket Kate (Purdue University) and Matteo Maffei (Vienna University of Technology)
16:35
(30 min)
Instantiating [Scriptless] 2P-ECDSA: Fungible 2-of-2 MultiSigs for Today's Bitcoin
PRESENTER(s):
Conner Fromknecht (Lightning Labs)
17:05
(15 min)
Break
17:20
(45 min)
Work-in-Progress Session
19:00
Main Reception at Tokyo Design Center

October 7th

Open

09:10
(5 min)
Opening

Architecture

09:15
(30 min)
OmniLedger: A Secure, Scale-Out, Decentralized Ledger via Sharding
PRESENTER(s):
Eleftherios Kokoris-Kogias, Philipp Jovanovic, Linus Gasser, Nicolas Gailly, Ewa Syta and Bryan Ford (Ecole Polytechnique Fédérale de Lausanne)
09:45
(30 min)
The GHOSTDAG Protocol
PRESENTER(s):
Yonatan Sompolinsky and Aviv Zohar (The Hebrew University of Jerusalem)
10:15
(15 min)
Break

Lightning Network

10:30
(30 min)
Rebalancing in the Lightning Network: Analysis and Implications
PRESENTER(s):
Sebastián Reca (Muun)
11:00
(30 min)
Reproductible Lightning Benchmark
PRESENTER(s):
Nicolas Dorier (DG Lab)
11:30
(30 min)
Incentivizing Payment Channel Watchtowers
PRESENTER(s):
Georgia Avarikioti, Felix Laufenberg, Jakub Sliwinski, Yuyi Wang and Roger Wattenhofer (ETH Zurich)
12:00
(60 min)
Lunch

Interoperability

13:00
(30 min)
The State of Atomic Swaps
PRESENTER(s):
Thomas Eizinger, Lloyd Fournier and Phillip Hoenisch (CoBlox)
13:30
(30 min)
Statechains: Off-chain Transfer of UTXOs
PRESENTER(s):
Ruben Somsen
14:00
(30 min)
Niji: Bitcoin Bridge Utilizing Payment Channels
PRESENTER(s):
Hiroki Watanabe, Shigenori Ohashi, Shigeru Fujimura, Atsushi Nakadaira, Kota Hidaka and Jay Kishigami (NTT Service Evolution Labs., NTT Corp.)
14:30
(30 min)
Interoperability with Cryptocurrency-backed Tokens
PRESENTER(s):
Alexei Zamyatin, Dominik Harz, Joshua Lind, Panayiotis Panayiotou, Arthur Gervais and William J. Knottenbelt (Imperial College London)
15:00
(20 min)
Break

Discussion groups

15:20
(120 min)
Workshops
Scriptless scripts, adaptor signatures and their applications (Room #456)
LEADERS: Andrew Poelstra (Blockstream)
The evolution of bitcoin scripting (Room #453)
LEADERS: Olaoluwa Osuntokun (Lightning Labs)
Forward Blocks (Room #455)
LEADERS: Mark Friedenbach
CVE, Vulnerability handling (Room #451)
LEADERS: Braydon Fuller (Purse.io)
Miner bribery and incentives (Room #452)
LEADERS: Joseph Bonneau (New York University)
UTXO/state commitments (Room #457)
LEADERS: Benedikt Bünz (Stanford University)
17:20
(45 min)
Wrap up from discussion groups, next steps and close