Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
スマートコントラクト / Smart Contracts
Search
Kenji Saito
PRO
February 21, 2020
Technology
1
120
スマートコントラクト / Smart Contracts
2020年2月21日(金)、ブロックチェーンハブ主催のブロックチェーンアカデミー「スマートコントラクト」にて使用したスライドです。
Kenji Saito
PRO
February 21, 2020
Tweet
Share
More Decks by Kenji Saito
See All by Kenji Saito
多重比較/相関分析 / Multiple Comparison and Correlation Analysis
ks91
PRO
0
44
アカデミーキャンプ 2025冬「考えるのは奴らだ」 / Academy Camp 2025 Winter - Live and Let Think DAY 3
ks91
PRO
0
32
アカデミーキャンプ 2025冬「考えるのは奴らだ」 / Academy Camp 2025 Winter - Live and Let Think DAY 2
ks91
PRO
0
35
アカデミーキャンプ 2025冬「考えるのは奴らだ」 / Academy Camp 2025 Winter - Live and Let Think DAY 1
ks91
PRO
1
63
インクルーシブな社会へ / Toward an Inclusive Society
ks91
PRO
0
10
P 値と有意差/分散分析 / P-value, Significant Difference and Analysis of Variance
ks91
PRO
0
49
関連2群のt検定/独立2群のt検定 / Related 2-group t-test and independent 2-group t-test
ks91
PRO
0
65
A Guide to Paper Writing Support with Generative AI - A Joint Zemi
ks91
PRO
0
18
正規分布と簡単な統計理論/t分布と信頼区間 / Normal distribution, simple statistical theory, t-distribution and confidence intervals
ks91
PRO
0
50
Other Decks in Technology
See All in Technology
I could be Wrong!! - Learning from Agile Experts
kawaguti
PRO
8
3.2k
信頼されるためにやったこと、 やらなかったこと。/What we did to be trusted, What we did not do.
bitkey
PRO
0
2.1k
あなたの人生も変わるかも?AWS認定2つで始まったウソみたいな話
iwamot
3
820
20240522 - 躍遷創作理念 @ PicCollage Workshop
dpys
0
310
Visual StudioとかIDE関連小ネタ話
kosmosebi
1
360
チームが毎日小さな変化と適応を続けたら1年間でスケール可能なアジャイルチームができた話 / Building a Scalable Agile Team
kakehashi
2
210
生成AI × 旅行 LLMを活用した旅行プラン生成・チャットボット
kominet_ava
0
150
[IBM TechXchange Dojo]Watson Discoveryとwatsonx.aiでRAGを実現!事例のご紹介+座学②
siyuanzh09
0
110
「隙間家具OSS」に至る道/Fujiwara Tech Conference 2025
fujiwara3
6
6.2k
コロプラのオンボーディングを採用から語りたい
colopl
5
920
OPENLOGI Company Profile for engineer
hr01
1
18k
AWSの生成AIサービス Amazon Bedrock入門!(2025年1月版)
minorun365
PRO
7
450
Featured
See All Featured
CSS Pre-Processors: Stylus, Less & Sass
bermonpainter
356
29k
Unsuck your backbone
ammeep
669
57k
Fashionably flexible responsive web design (full day workshop)
malarkey
406
66k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
27
1.5k
ピンチをチャンスに:未来をつくるプロダクトロードマップ #pmconf2020
aki_iinuma
113
50k
Building Better People: How to give real-time feedback that sticks.
wjessup
366
19k
Thoughts on Productivity
jonyablonski
68
4.4k
Large-scale JavaScript Application Architecture
addyosmani
510
110k
Testing 201, or: Great Expectations
jmmastey
41
7.2k
Reflections from 52 weeks, 52 projects
jeffersonlam
348
20k
Automating Front-end Workflow
addyosmani
1366
200k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
19
2.3k
Transcript
Chief Science Officer / ks91@blockchainhub.co.jp — — 2020-02-21 – p.1/39
https://speakerdeck.com/ks91 — — 2020-02-21 – p.2/39
( ) SFC CSO (Chief Science Officer) 1993 ( )
2006 ( ) SFC 19 P2P (Peer-to-Peer) ( 9 ) 2011 2018 2019 ∼ 2019 ∼ REINVENT THE WORLD → ( ) — — 2020-02-21 – p.3/39
— — 2020-02-21 – p.4/39
— — 2020-02-21 – p.5/39
— — 2020-02-21 – p.6/39
↑ . . . — — 2020-02-21 – p.7/39
vs. — — 2020-02-21 – p.8/39
(by ) 1. 2. ( ) ( ) . .
. cf. by McLuhan cf. by McLuhan → — — 2020-02-21 – p.9/39
Ethereum ( ) EVM (Ethereum Virtual Machine) — — 2020-02-21
– p.10/39
Vitalik Buterin, “Ethereum White Paper: A NEXT GENERATION SMART CONTRACT
& DECENTRALIZED APPLICATION PLATFORM” 15 = ( ) DApps ( ) — — 2020-02-21 – p.11/39
EVM : Ethereum Virtual Machine Gas ( EVM = )
→ — — 2020-02-21 – p.12/39
— — 2020-02-21 – p.13/39
EVM : . . . : Solidity — JavaScript Vyper
— Python LLL — Lisp — — 2020-02-21 – p.14/39
Solidity ( ) pragma solidityˆ0.5.0; contract IndivisibleAsset { /* */
string public _name; string public _symbol; uint256 public _quantity; address public _owner; constructor(string memory name, string memory symbol, uint256 quantity) public { _name = name; _symbol = symbol; _quantity = quantity; _owner = msg.sender; } function transfer(address to) public returns (bool) { require (_owner == msg.sender); _owner = to; return true; } } — — 2020-02-21 – p.15/39
( , ) (constructor) (deploy) = ( ) ( )
ETH — — 2020-02-21 – p.16/39
(ex. ) (ex. ) — — 2020-02-21 – p.17/39
ADEPT The DAO — — 2020-02-21 – p.18/39
ADEPT ADEPT : IBM IoT → ⇒ — — 2020-02-21
– p.19/39
— — 2020-02-21 – p.20/39
⇒ — — 2020-02-21 – p.21/39
The DAO ( ) The DAO Split ( ) 360
ETH (50∼60 ) (2016/6/17) ( ) ( ; ) (2016/7/20 ) — — 2020-02-21 – p.22/39
— — 2020-02-21 – p.23/39
ERC20 ERC (Ethereum Request for Comment) 20 https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md contract ERC20
{ function totalSupply() constant returns (uint totalSupply); function balanceOf(address _owner) constant returns (uint balance); function transfer(address _to, uint _value) returns (bool success); function transferFrom(address _from, address _to, uint _value) returns (bool success); function approve(address _spender, uint _value) returns (bool success); function allowance(address _owner, address _spender) constant returns (uint remaining); event Transfer(address indexed _from, address indexed _to, uint _value); event Approval(address indexed _owner, address indexed _spender, uint _value); } name/ , symbol/ , decimals/ approve allowance ERC223 ( ), ERC721 (Non-Fungible) — — 2020-02-21 – p.24/39
ERC20 ERC20 ( ) ⇒ ERC20 ( ERC20 ) ERC20
⇒ — — 2020-02-21 – p.25/39
(fungible) ERC20 → ERC223 (draft) or ERC777 (non-fungible) ERC721 (
) (partially fungible) ERC1410 (draft) (ERC1400 ) — — 2020-02-21 – p.26/39
ERC ERC1400 (draft) : Security Token Standard ERC20 ERC777 ERC1594
(draft) : Core Security Token Standard ( ) (KYC ) ERC1643 (draft) : Documnet Management Standard ERC1644 (draft) : Controller Token Standard ( ) ( ) ERC2258 (draft) : Custodial Ownership Standard ( ) ( ) — — 2020-02-21 – p.27/39
OS — — 2020-02-21 – p.28/39
OS (2007) — — 2020-02-21 – p.29/39
OS ↑ cf. NPO/NGO — — 2020-02-21 – p.30/39
OS — — 2020-02-21 – p.31/39
Uber — — 2020-02-21 – p.32/39
Uber Uber P2P + Uber — — 2020-02-21 – p.33/39
/ . . . — — 2020-02-21 – p.34/39
( ) / / — — 2020-02-21 – p.35/39
— 1. ( ) 2. ( ) 3. ( )
— — 2020-02-21 – p.36/39
10 12 → 120 120 12 12 120 — —
2020-02-21 – p.37/39
— — 2020-02-21 – p.38/39
— — 2020-02-21 – p.39/39