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
ブロックチェーン概論とインストール大会 / Overview of Blockchain an...
Search
Kenji Saito
PRO
October 18, 2021
Technology
0
160
ブロックチェーン概論とインストール大会 / Overview of Blockchain and Installation
2021年10月18日(月)、慶應義塾大学大学院メディアデザイン研究科「サービスデザインプロジェクト B」2021秋 第2回で使用されたスライドです。
Kenji Saito
PRO
October 18, 2021
Tweet
Share
More Decks by Kenji Saito
See All by Kenji Saito
We Never Took the Kobayashi Maru Test Until Now. What Do You Think of Our Solutions? — Journeys of the Mind Through a No-Win Game
ks91
PRO
0
8
思いつきが武器になる:研究というゲームを始めよう / Ideas Are Your Equipments : Let the Game of Research Begin!
ks91
PRO
0
60
ロボットを雰囲気(ヴァイブ)でプログラミングするこどもたち / Children Vibe-Programming Robots
ks91
PRO
0
21
アカデミーキャンプ 2025 SuuuuuuMMeR「燃えろ!!ロボコン」 / Academy Camp 2025 SuuuuuuMMeR "Burn the Spirit, Robocon!!" DAY 3
ks91
PRO
0
29
アカデミーキャンプ 2025 SuuuuuuMMeR「燃えろ!!ロボコン」 / Academy Camp 2025 SuuuuuuMMeR "Burn the Spirit, Robocon!!" DAY 2
ks91
PRO
0
32
アカデミーキャンプ 2025 SuuuuuuMMeR「燃えろ!!ロボコン」 / Academy Camp 2025 SuuuuuuMMeR "Burn the Spirit, Robocon!!" DAY 1
ks91
PRO
0
150
未来へのフォワードキャスト / Forward Cast to the Future
ks91
PRO
0
82
発表と総括 / Presentations and Summary
ks91
PRO
0
59
サイバーフィジカル社会、金融の未来とアイデアソン / Cyber Physical Society, Future of Finance, and Ideathon
ks91
PRO
0
76
Other Decks in Technology
See All in Technology
【5分でわかる】セーフィー エンジニア向け会社紹介
safie_recruit
0
30k
VPC Latticeのサービスエンドポイント機能を使用した複数VPCアクセス
duelist2020jp
0
310
広島発!スタートアップ開発の裏側
tsankyo
0
260
ZOZOTOWNフロントエンドにおけるディレクトリの分割戦略
zozotech
PRO
18
5.7k
KiroでGameDay開催してみよう(準備編)
yuuuuuuu168
1
150
第4回 関東Kaggler会 [Training LLMs with Limited VRAM]
tascj
12
1.9k
実践データベース設計 ①データベース設計概論
recruitengineers
PRO
4
980
LLMエージェント時代に適応した開発フロー
hiragram
1
430
Browser
recruitengineers
PRO
5
1.3k
JavaScript 研修
recruitengineers
PRO
4
860
Figma + Storybook + PlaywrightのMCPを使ったフロントエンド開発
yug1224
10
3.2k
どこで動かすか、誰が動かすか 〜 kintoneのインフラ基盤刷新と運用体制のシフト 〜
ueokande
0
200
Featured
See All Featured
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
kevinliebholz
34
6k
Typedesign – Prime Four
hannesfritz
42
2.8k
Designing for Performance
lara
610
69k
Bash Introduction
62gerente
614
210k
Java REST API Framework Comparison - PWX 2021
mraible
33
8.8k
Six Lessons from altMBA
skipperchong
28
4k
Mobile First: as difficult as doing things right
swwweet
223
9.9k
How to Create Impact in a Changing Tech Landscape [PerfNow 2023]
tammyeverts
53
2.9k
Into the Great Unknown - MozCon
thekraken
40
2k
Designing for humans not robots
tammielis
253
25k
The Language of Interfaces
destraynor
160
25k
Testing 201, or: Great Expectations
jmmastey
45
7.6k
Transcript
B 2021 2 ( ) B 2021 — 2 —
2021-10-18 – p.1/58
https://speakerdeck.com/ks91 ( ) Discord Discord ( / / ) Zoom
URL ( ) B 2021 — 2 — 2021-10-18 – p.2/58
( ) 1 10 11 • 2 10 18 •
3 10 25 4 11 1 5 11 8 1 6 11 15 2 7 11 22 8 11 29 Discord B 2021 — 2 — 2021-10-18 – p.3/58
– : : Ethereum ( ) ( ) Ethereum B
2021 — 2 — 2021-10-18 – p.4/58
– B 2021 — 2 — 2021-10-18 – p.5/58
( ) ( ) ( ) ↓ ( ( ))
(BP : Blockchain Property ) BP-1 : ( ) BP-2 : ( ( ) ) BP-3 : ( ) ( ) ( ) B 2021 — 2 — 2021-10-18 – p.6/58
( ) (LIFO : Last In, First Out) ( )
B 2021 — 2 — 2021-10-18 – p.7/58
( ) ( ) ( ) ( ) ( 16
) SHA (Secure Hash Algorithm) ( ) 1bit B 2021 — 2 — 2021-10-18 – p.8/58
( ) ( ) < , > ( ) ←
: < , > : : < , , > : OK ( 1 ) NG ( ) B 2021 — 2 — 2021-10-18 – p.9/58
BP-1 ( ), BP-2 ( ) BBc-1 f : →
BP-3 ( ) ( ) ( ) ← BP-2 ← BP-3 ( ) (BP-2 ) ( ) ← BP-3 (?) + ← BP-{1,2} B 2021 — 2 — 2021-10-18 – p.10/58
[Lamport 1984][Schneider 1990] (1) (2) (3) (4) ( ) ←
↑ B 2021 — 2 — 2021-10-18 – p.11/58
TX : transaction ( 4 TX ) SMRP (State Machine
Replication Problem) SMRP-1 ( ) SMRP-2 : B 2021 — 2 — 2021-10-18 – p.12/58
( ) ( ) ϒϩοΫ൪߸O ϒϩοΫ൪߸O ϒϩοΫ൪߸O ϒϩοΫ൪߸O
ϒϩοΫ൪߸O ϒϩοΫ൪߸O ϒϩοΫ൪߸O ϒϩοΫ൪߸O ͍ͪΜهɾॻ͖͑ͷίετ͕ߴ͍ྺ࢙ ࠷վ͟Μ͠ʹ͍͘ྺ࢙ ͕༗ޮ ͻͱͭखલͷϒϩοΫͷ ʮμΠδΣετʯ σδλϧॺ໊͞Εͨ ʮτϥϯβΫγϣϯ औҾ ʯ ϒϩοΫΛ࡞ΔͨΊʹɺͦͷʮμΠδΣετʯ͕͋ΔҎԼͱ͍͏݅Λຬͨͨ͠Γ 1SPPGPG8PSL Ծ௨՟ͷ࣋ͪʹԠͨ͡ݖརΛͬͨථͰউͬͨΓ 1SPPGPG4UBLF ͢Δඞཁ͕͋Δ ίετ͕͔͔Δ ϒϩοΫΛ࡞ΔਓͦͷதʹࣗʹѼͯͨ Ծ௨՟ͰͷใुΛॻ͖ࠐΉ͜ͱ͕Ͱ͖ɺ ͦͷϒϩοΫ͕༗ޮͳྺ࢙ͷதʹ͋Δ߹ʹ ݶΓใु༗ޮͱͳΔ τϥϯβΫγϣϯͷଘࡏΛ֬ೝ͢Δ ͨΊͷޮతͳํ๏͕ఏڙ͞ΕΔ ਖ਼ੑ ଘࡏੑ །Ұੑ Proof of Work ( ) ( ) . . . → B 2021 — 2 — 2021-10-18 – p.13/58
(BP-3 ) ( : ) (BP-3 ) ( : )
← NFT BP-{1,2,3} BP-{1, 2} ⇒ B 2021 — 2 — 2021-10-18 – p.14/58
(Confidentiality) BP-{1,2,3} ↑ ( = ) (Integrity) BP-3 (Availability) BP-2
B 2021 — 2 — 2021-10-18 – p.15/58
2009 ↑ 12 ( 5 ) B 2021 — 2
— 2021-10-18 – p.16/58
( ) ADR (Active (space) Debris Removal) : https://doi.org/10.1109/TCSS.2018.2890655 (1930
) ( ) B 2021 — 2 — 2021-10-18 – p.17/58
( ) ( ) ( ) B 2021 — 2
— 2021-10-18 – p.18/58
( ) ( - ) : https://doi.org/10.1016/j.future.2019.05.019 B 2021 —
2 — 2021-10-18 – p.19/58
( ) ( ) ( ) B 2021 — 2
— 2021-10-18 – p.20/58
( ) B 2021 — 2 — 2021-10-18 – p.21/58
/ ( ) ( ) ( ) ( ) B
2021 — 2 — 2021-10-18 – p.22/58
( ) ( ) ( ) B 2021 — 2
— 2021-10-18 – p.23/58
( ) : https://www.lij.jp/html/jli/jli_2017/ 2017summer_p018.pdf B 2021 — 2 —
2021-10-18 – p.24/58
( ) ( ) B 2021 — 2 — 2021-10-18
– p.25/58
B 2021 — 2 — 2021-10-18 – p.26/58
with ( ) ( ) : https://doi.org/10.1016/j.icte.2021.08.012 ( ) B
2021 — 2 — 2021-10-18 – p.27/58
DNS : https://arxiv.org/abs/2011.05442 ( ) IP AS B 2021 —
2 — 2021-10-18 – p.28/58
( ) ( ) : https://arxiv.org/abs/2011.05442 ( ) : https://doi.org/10.1016/j.icte.2021.08.012
(web ) B 2021 — 2 — 2021-10-18 – p.29/58
( ) ( ) ( ) : https://doi.org/10.1016/j.icte.2021.08.012 ( )
( ) ( ) : https://arxiv.org/abs/2011.05442 B 2021 — 2 — 2021-10-18 – p.30/58
( ) ( ) : https://arxiv.org/abs/2011.05442 3D HACCP ( )
B 2021 — 2 — 2021-10-18 – p.31/58
2. Ethereum macOS (Big Sur 11.6) + Homebrew Linux (Ubuntu
20.04.3) (x86/AMD64 and ARM) Windows 10 + Windows Subsystem for Linux (Ubuntu ) Ethereum solidity brownie B 2021 — 2 — 2021-10-18 – p.32/58
Solidity Ethereum ( ) http://solidity.readthedocs.io/en/latest/installing-solidity.html Linux (on Windows) “sudo apt”,
macOS “brew” Linux ARM git clone dependencies solc 0.8.9 (10/6 ) $ solc --version brownie py-solc-x solc (dependencies) ( solc py-solc-x ) B 2021 — 2 — 2021-10-18 – p.33/58
Ganache CLI Ethereum RPC npm ( ) macOS https://qiita.com/kyosuke5_20/items/c5f68fc9d89b84c0df09 Linux
https://qiita.com/seibe/items/36cef7df85fe2cefa3ea npm Ganache CLI $ sudo npm install -g ganache-cli B 2021 — 2 — 2021-10-18 – p.34/58
Python3 macOS $ brew install
[email protected]
python3 python 3.9 (12/2
) 3.9 3.8 3.9 $ brew uninstall --ignore-dependencies
[email protected]
$ brew install
[email protected]
/usr/local/opt/
[email protected]
/bin/python3 Linux $ sudo apt update $ sudo apt install python3.8 python3.8-dev python3.8-venv python3.8-tk 16.10 python3(.8) apt (PPA ) python3 python3-dev python3-venv python3-tk B 2021 — 2 — 2021-10-18 – p.35/58
macOS : . . . macOS wget brew dyld: Library
not loaded: /usr/local/opt/gettext/lib/libintl.8.dylib $ brew uninstall --force gettext $ brew install gettext B 2021 — 2 — 2021-10-18 – p.36/58
Python (venv) macOS (Linux python3 ) ‘python3.8’ ‘python3’ $ python3.8
-m venv bbc1env $ source bbc1env/bin/activate (bbc1env) $ pip install -U pip (bbc1env) $ pip install wheel bbc1env ( BBc-1 ) ( ) (bbc1env) $ deactivate B 2021 — 2 — 2021-10-18 – p.37/58
Brownie Python Ethereum https://eth-brownie.readthedocs.io Brownie $ pip install eth-brownie version
1.16.4 (10/6 ) B 2021 — 2 — 2021-10-18 – p.38/58
$ brownie init ( ERC-20 ) $ brownie bake token
$ cd token B 2021 — 2 — 2021-10-18 – p.39/58
contracts (macOS Linux (x86/AMD64) ) $ brownie compile Linux (ARM)
(AMD64 ) $ python # >>> import solcx >>> solcx.compile_solc(’0.6.12’) # >>> quit() /tmp ~/.solcx/solc-v0.6.12 ( ) $ pytest tests B 2021 — 2 — 2021-10-18 – p.40/58
Brownie $ brownie console Python >>> len(accounts) 10 >>> accounts[0].balance()
100000000000000000000 >>> quit() B 2021 — 2 — 2021-10-18 – p.41/58
3. Ethereum ropsten B 2021 — 2 — 2021-10-18 –
p.42/58
infura.io Brownie https://infura.io SIGN UP PROJECT ID infura Ethereum API
infura . . . infura.io PROJECT ID WEB3_INFURA_PROJECT_ID PROJECT ID (~/.bash_profile ) $ export WEB3_INFURA_PROJECT_ID= PROJECT ID B 2021 — 2 — 2021-10-18 – p.43/58
ropsten ETH brownie console ropsten >>> network.disconnect() >>> network.connect(’ropsten’) >>>
len(accounts) 0 >>> accounts.add() <LocalAccount object ’ 16 ’> >>> accounts[0].private_key 16 >>> quit() Ropsten Testnet ETH Faucet 5.0ETH https://faucet.dimensions.network/ ( ) https://metamask.io/ B 2021 — 2 — 2021-10-18 – p.44/58
ropsten ETH brownie console ropsten ETH >>> network.disconnect() >>> network.connect(’ropsten’)
>>> len(accounts) 0 >>> accounts.add( 16 ) <LocalAccount object ’ 16 ’> >>> accounts[0].balace() ETH >>> quit() ETH >>> accounts[0].transfer(accounts[1], "1 ether") B 2021 — 2 — 2021-10-18 – p.45/58
Ethereum B 2021 — 2 — 2021-10-18 – p.46/58
Ethereum Vitalik Buterin, “Ethereum White Paper: A NEXT GENERATION SMART
CONTRACT & DECENTRALIZED APPLICATION PLATFORM” 15 (= ) = ⇒ → Dapps ( / / ) B 2021 — 2 — 2021-10-18 – p.47/58
( ) B 2021 — 2 — 2021-10-18 – p.48/58
. . . B 2021 — 2 — 2021-10-18 –
p.49/58
vs. B 2021 — 2 — 2021-10-18 – p.50/58
= run B 2021 — 2 — 2021-10-18 – p.51/58
Ether Ethereum EOA : Externally-Owned Account ( ) Ether EVM
EVM B 2021 — 2 — 2021-10-18 – p.52/58
EVM : Ethereum Virtual Machine Gas ( EVM = (
burn)) . . . B 2021 — 2 — 2021-10-18 – p.53/58
EVM : : ← : Solidity — JavaScript LLL —
Lisp Vyper — Python Fe — Vyper Rust ← NEW! Solidity Vyper Python B 2021 — 2 — 2021-10-18 – p.54/58
Solidity ( ) pragma solidityˆ0.7.0; 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; } } B 2021 — 2 — 2021-10-18 – p.55/58
( , ) (constructor) (deploy) = ( ) ( )
ETH Trusted Actor Model B 2021 — 2 — 2021-10-18 – p.56/58
Ethereum B 2021 — 2 — 2021-10-18 – p.57/58
B 2021 — 2 — 2021-10-18 – p.58/58