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Saturday, November 10
 

09:30

受付 / Registration
Saturday November 10, 2018 09:30 - 10:30
Track A

10:30

[ja] Welcome to Hi-Con 2018
2008年東京大学物理学科卒業後、自身での起業も含め複数のスタートアップに関わる “0→1フェーズの何でも屋”。ワールドコンピュータとしての Ethereum の可能性に惹かれ勉強する過程で、2017年に Ethereum 技術者向けコミュニティ Hi-Ether (hi-ether.org) を立ち上げ。直近では、証券領域でのブロックチェーン技術活用が主な研究対象。

Speakers

Saturday November 10, 2018 10:30 - 10:50
Track A
  • Lang JA

10:50

[en] Mythril & Security development lifecycle (SDLC)
Mythril is a security tools platform that brings security into smart contract development environments and build pipelines. At its core, it consists of an API and SDK that which allows partners to create purpose-built Ethereum security tools and also extend the Mythril Platform with useful security extensions and plug-ins. In this talk we will give an overview of how Mythril fits into smart contract development, how we are working with partners, and how Mythril integrates with other security services such as those from NRI Secure.

Speakers
avatar for Tom Lindeman

Tom Lindeman

Business Strategist, ConsenSys Solutions
Tom is a co-founder of ConsenSys Diligence and co-chair of Enterprise Ethereum Alliance Security Working Group. Currently creating web3 crypto token innovations on the Ethereum blockchain with a focus on security, developer tools, decentralized products and n-sided ecosystems. Formerly... Read More →


Saturday November 10, 2018 10:50 - 11:30
Track A
  • Lang EN

11:30

[ja] Smart contract vulnerabilities & other auditing tools
Speakers
avatar for Teruhiro Tagomori

Teruhiro Tagomori

Security Engineer, NRI Secure Tech


Saturday November 10, 2018 11:30 - 11:55
Track A
  • Lang JA

12:10

[en] Continuous Security in Smart Contract Development
Programmers often copy and paste the software code from various sources like GitHub. This reuse is excessively found in Ethereum as its community is open source-oriented and smart contracts are open to the public through the chain.
Although the code reuse is an efficient development strategy, contract software often suffers from the propagated security threats due to the possibility of cloning buggy code. Vulnerable code clones - similar code fragments containing security bug - are even permanent because of the immutability of Ethereum.
If a hacker succeeds to exploit one of the clones, our contracts may also be exploited. Users, funds, and services are exposed to threats, and there is no other way than the contract migration. Therefore, to ensure the safety, the contract developer should pay attention to recently hacked clones.
In this session, we introduce real-world vulnerability propagation cases in Ethereum smart contract. And we propose our vulnerability DB and analyzer to Ethereum community to be secured from the known vulnerabilities.

Speakers
avatar for Jisu Park

Jisu Park

CEO, Sooho
Jisu Park is CEO of Sooho, a security startup company in Korea. Sooho provides fully automated vulnerability scanner services for the smart contract. He is a doctoral student in Software Security at Korea University. He is an expert in software vulnerability detection, smart contract... Read More →



Saturday November 10, 2018 12:10 - 12:40
Track B
  • Lang EN

12:10

[ja] Block chain as a gaming platform
Mobageや、AndAppというゲームプラットフォーム事業を行うDeNAが、Platformerという観点で、ブロックチェーンを用いた新しいプラットフォームの形というテーマでトークを行います。ERC20に始まり注目されるERC1155についてや、decenterized asset & parameterという観点で、トークンエコノミー以外でも、ブロックチェーンでゲーム間の流動性を作る事例としてKittyVerseなどの紹介、開発SDKについてLoomと簡単に接続が可能なCocosBCXなど、周辺技術などについてトークを行い、BlockChainで次のものづくりへ繋げる提案を行います。
https://speakerdeck.com/oggata/blockchain-as-a-gaming-platform

Speakers


Saturday November 10, 2018 12:10 - 12:40
Track C
  • Lang JA

13:00

[en][C] What’s really happening on Ethereum? Using EthStats to visualize public and private Ethereum networks.
Speakers
avatar for Christian Crowley

Christian Crowley

Head of Strategy & Partnerships, Alethio by ConsenSys


Saturday November 10, 2018 13:00 - 13:20
Track C
  • Lang EN

13:00

[ja][A] Report from Devcon4
Speakers
avatar for Hiroshi Shimo

Hiroshi Shimo

CEO, Consensus Base Inc.


Saturday November 10, 2018 13:00 - 13:40
Track A

13:00

[ja][B] DApps開発チームの取り組みの紹介
Speakers
avatar for Noriaki Kawanishi

Noriaki Kawanishi

Design strategist , UI/UX designer, DMM.com
DMM.com Blockchain Lab R&Dチームの取り組みについて紹介します。 | | この度DMM.comは「Hi-con2018」にあわせ、クリプト報酬型イベント運用プラットフォーム『Quest α版』をリリースしました。『Quest』はイベントなどを運営主催するコミュニティーの成長支援や参加者の学習サポートを目的としたDApps... Read More →
avatar for Jikyung Kim

Jikyung Kim

Lead Engineer, DMM.com



Saturday November 10, 2018 13:00 - 13:40
Track B
  • Lang JA

13:20

[en][C] Mustekala - MetaMask's browser light client
Speakers
avatar for Aaron Davis

Aaron Davis

Research Director, MetaMask by ConsenSys
avatar for Herman Junge

Herman Junge

Founder & Infrastructure Architect, Infura


Saturday November 10, 2018 13:20 - 13:40
Track C
  • Lang EN

13:50

13:50

[ja][B] A new protocol for assuring smart contract behaviour
A new protocol for assuring smart contract behaviour
デプロイされたスマートコントラクトのセキュリティ・プロトコール

Smart contracts are immutable pieces of code on a blockchain which often handle large sums of money. Pre-deployment, many contracts undergo security audits and are subjected to static analysis in order to find errors and issues; however, there are no options for ensuring correctness of a contract once it has been deployed. This talk describes a novel decentralized protocol that provides a layer of economic assurance for the correctness of a deployed smart contract. The protocol deems a smart contract to be correct if it does not perform some user-defined behaviour. The protocol periodically rewards participants who place a collateral stake on the behaviour of a smart contract; participants lose this stake in the event that the contract misbehaves. The protocol enables economic assurance for arbitrary stakeholders of a contract, allowing these stakeholders to recover staked funds if a contract misbehaves. Stakeholders are not limited to the contract writers or owners, and anyone can stake collateral.

Speakers
avatar for Yohei Oka

Yohei Oka

Forward Deployed Engineer, Quantstamp
Yohei is a full stack engineer with experience working at both startups and large tech companies. Before joining Quantstamp, Yohei was in Seattle working on Amazon Go, the no-checkout convenience store. He first got involved with blockchain through arbitrage and bot-trading and is... Read More →


Saturday November 10, 2018 13:50 - 14:30
Track B
  • Lang JA

13:50

[ja][C] zk-SNARKsの理論と応用 / Theory and practice of zk-SNARKs
Speakers
avatar for Osuke Sudo

Osuke Sudo

Lead Engineer, LayerX


Saturday November 10, 2018 13:50 - 14:30
Track C
  • Lang JA

14:40

[ja][A] mercariX ~Decentralized Marketplace~
Speakers
avatar for Keita Nakamura

Keita Nakamura

Blockchain Engineer, mepary


Saturday November 10, 2018 14:40 - 15:20
Track A
  • Lang JA

14:40

[ja][B] 分散型IDとはなにか / What is Decentralized Identity
Speakers
avatar for Kunihito Kuwabara

Kunihito Kuwabara

Tech Lead, Hi-Ether


WIDI pdf

Saturday November 10, 2018 14:40 - 15:20
Track B
  • Lang JA

14:40

15:50

[ja][A] パネルディスカッション / Panel Discussion
Speakers
avatar for Yoshinori Fukushima

Yoshinori Fukushima

CEO, LayerX
東京大学大学院工学系研究科修了。大学院在学中に「Gunosy(グノシー)」のサービスを開発し、2012年11月に株式会社Gunosyを創業、代表取締役に就任。2013年11月より代表取締役最高経営責任者に就任。2012年度IPA... Read More →
avatar for Yuki Hamada

Yuki Hamada

CPO, Mercari
株式会社メルカリ 取締役CPO | 東京理科大学理工学部在学中に、株式会社サイブリッジを立ち上げ取締役副社長に就任、受託開発の責任者を始めM&A、新規事業の立ち上げなどに従事。同社を2014年10月退社後、2014年12... Read More →
avatar for Yuki Matsumoto

Yuki Matsumoto

CTO, DMM.com


Saturday November 10, 2018 15:50 - 16:30
Track A
  • Lang JA

15:50

15:50

[ja][B] Testing a Contract with Truffle
このワークショップでは以下の4つのtest手法を学びます。
  1. Truffleを用いたunit testの方法
  2. Truffle + lk-test-helpersを用いた異常系のtestの作成方法
  3. Mythril Classicを用いた危険なコードの発見方法
  4. sol-traceを用いた高速なデバッグ手法
Step 0 - 事前準備 Workshop参加前に以下の環境を整備しておいてください。
※注意! 下記のセットアップには1時間以上時間がかかるため、必ずworkshop参加前に環境構築をお願いいたします。最低 2. Install Truffleまでは終わらせておいてください。
  1. Installe node.js.
    1. Windows: https://qiita.com/maecho/items/ae71da38c88418b806ff
    2. Mac OSX: https://qiita.com/kyosuke5_20/items/c5f68fc9d89b84c0df09
    3. Linux: https://nodejs.org/ja/download/package-manager/
  2. Install Truffle: https://truffleframework.com/docs/truffle/getting-started/installation
  3. Install Ptyhon3 (for mythril-classic)
    1. Windows: https://www.python.jp/install/windows/install_py3.html
    2. Mac OSX: https://qiita.com/yutaro_sakaguchi/items/72b17dfea1efa05aded4
    3. Linux: https://www.python.ambitious-engineer.com/archives/7
  4. Install Solidity Compiler(binary version. not solcjs)
  5. Install Mythril Classic


Speakers
avatar for Yukishige Nakajo

Yukishige Nakajo

Chief Ethereum Researcher, chaintope
Ethereum Researcher, Solidity, Truffle, Smart Contract / https://github.com/maticnetwork/sol-trace developing now


Saturday November 10, 2018 15:50 - 17:20
Track B
  • Lang JA

16:40

[ja][A] より良いDApp開発をするための話とgethoについて
より良いDApp開発をするために、ブロックチェーンネットワークとスマートコントラクトの実行という2つの点から問題点を指摘し、その解決をするために生まれたgethoというサービスについて話をします。

Speakers
avatar for Daisuke Sato

Daisuke Sato

CTO, Popshoot


Saturday November 10, 2018 16:40 - 17:20
Track A
  • Lang JA

16:40

[ja][C] ブロックチェーンとフルサーバレスでのシステム構築
フルサーバレスとブロックチェーンでのシステム構築と運用を通じて得られた知見について、良かった点や辛かった点含めて情報を展開させて頂きます。

Speakers
avatar for Keiju Togashi

Keiju Togashi

Lead Engineer, ALIS


Saturday November 10, 2018 16:40 - 17:20
Track C
  • Lang JA

17:30

18:30

[ja][A] 閉会の挨拶 / Closing Remarks
Speakers
avatar for Jun Ohwada

Jun Ohwada

Software Engineer, Hi-Ether


Saturday November 10, 2018 18:30 - 18:45
Track A
  • Lang JA

19:00

 


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