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The final workshop layout will be published during the lunch break.

Schedule

October 6th

08:30

(30 min)

Registration

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

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