Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Sign up for free
Menu
Search
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Pricing
Search
Sign in
Sign up for free
ブロックチェーンとは何か?
Search
Sponsored
·
SiteGround - Reliable hosting with speed, security, and support you can count on.
→
Sota Watanabe
July 15, 2018
Technology
160
0
Share
Embed
Copy iframe code
Copy JS code
Copy link
Start on current slide
ブロックチェーンとは何か?
Sota Watanabe
July 15, 2018
More Decks by Sota Watanabe
See All by Sota Watanabe
Plasm Network at Sub0.1 Summit
sotawatanabe
1
630
Blockchain Intro
sotawatanabe
0
1.2k
0x_V2.pdf
sotawatanabe
0
180
ブロックチェーン比較(DEX, StableCoin,SecurityToken)
sotawatanabe
1
500
明星和楽ブロックチェーンセッション
sotawatanabe
1
140
Blockchain×Game
sotawatanabe
0
190
世界の有望ブロックチェーンスタートアップ20(7月)
sotawatanabe
0
190
Blockchain For Better (BLOCK CO+ 登壇資料)
sotawatanabe
0
160
世界の有望ブロックチェーンスタートアップ50社(CB Insights)
sotawatanabe
0
240
Other Decks in Technology
See All in Technology
DevelopersIO 2026 Tokyo 現時点の衛星通信サービスの現状を整理してみる
maroon1st
0
320
ビジネス部門からPOを迎えての半年間の進歩と課題
zozotech
PRO
0
150
Autonomous AI Lakehouse - Live AI Hubから始めるセキュアなAIデータ活用 -
oracle4engineer
PRO
2
160
Microsoft のサポート ライフサイクルを理解する
murachiakira
PRO
0
220
Let's Change Our World—Again
snoozer05
PRO
6
710
書き手が人でもAIでも正しくなる道、SREを埋め込んだDeveloper Platform / tech drivers day8
chmikata
4
800
(swiftc) NonCopyableとライフタイム修飾子
teamhimeh
0
150
AI駆動開発におけるハーネスエンジニアリングの勘所
tsukuboshi
1
830
アカウント統制の健康診断
kenichinakamura
1
210
Vue.jsのGitHubから学ぶ意思決定
yut0naga1_fa
1
320
Claude Code をローカルとサーバー上で利用した際の Bedrock 利用料をユーザー単位で一本化してみる
ohorig
0
180
Claude Codeから見る、エンジニアの世界の変容とその先
oikon48
7
4.6k
Featured
See All Featured
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
659
62k
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
35
2.6k
Amusing Abliteration
ianozsvald
1
360
Typedesign – Prime Four
hannesfritz
42
3.2k
世界の人気アプリ100個を分析して見えたペイウォール設計の心得
akihiro_kokubo
PRO
74
43k
Raft: Consensus for Rubyists
vanstee
143
7.8k
The Success of Rails: Ensuring Growth for the Next 100 Years
eileencodes
47
8.4k
Fight the Zombie Pattern Library - RWD Summit 2016
marcelosomers
234
18k
Claude Code どこまでも/ Claude Code Everywhere
nwiizo
68
59k
Automating Front-end Workflow
addyosmani
1370
210k
Lightning Talk: Beautiful Slides for Beginners
inesmontani
PRO
2
740
Skip the Path - Find Your Career Trail
mkilby
1
260
Transcript
1. ͳͥBC͕ඞཁͳͷ͔ 1. ैདྷͷऔҾ 2. ैདྷͷ 3. BCͷղܾੑ 2. جຊతͳΈ
1. લఏ݅ 2. ϓϩηε 3. ු͔ͼ্͕Δٙ 4. 51%߈ܸ ϒϩοΫνΣʔϯͱԿ͔ ࢀরݩɿWTF is The Blockchain? ʢhttps://hackernoon.com/wtf-is-the-blockchain-1da89ba19348ʣ
1. ͳͥϒϩοΫνΣʔϯ͕ඞཁͳͷ͔ BCʹΑͬͯୈࡾऀػؔʹґଘͤͣͱ৴པΛੜΈग़͢͜ͱ͕Ͱ͖ΔΑ͏ʹͳͬͨɻ Trust without 3rd party
1.1. ैདྷͷऔҾ ೋऀؒʹ͓͚ΔऔҾʹ͓͍ͯୈࡾऀػؔʢex. ۜߦʣ͕ؒΛऔΓ࣋ͪެਖ਼ੑΛอͭ $100 to B I send $100
from A to B I got $100 A͔ΒBʹ$100ૹۚ͢Δ߹ A͞Μ B͞Μ ۜߦ $100 $100
1.2. ैདྷͷ ୈࡾऀػ͕ؔԿΒ͔ͷཧ༝Ͱμϯɾϛεɾҙਤతͳૢ࡞Λߦ͑ެਖ਼ͳऔҾ͕ߦ͑ͳ͘ͳΔ $100 to B I send $50 from
A to B Why $50? A͔ΒBʹ$100ૹۚ͢Δ߹ A͞Μ B͞Μ ۜߦ $100 $50
1.3. Block Chainͷղܾੑ ϒϩοΫνΣʔϯୈࡾऀػؔʹཔΔ͜ͱແ͘औҾͷ৴པੑɾެਖ਼ੑΛ࣮ݱ͢Δ͜ͱ͕ग़དྷΔ Trust without 3rd party
2.1. લఏ݅ BC3ਓҎ্ͷωοτϫʔΫ͕ଘࡏ͠ɺͦΕͧΕ͕ه͢ΔͷΛ͍࣋ͬͯΔڥΛఆ͢Δ ωοτϫʔΫ هா
2.2. ϓϩηε େ͖͘4ͭͷಈ࡞ʹΑͬͯϒϩοΫνΣʔϯΓཱ͍ͬͯΔ 1. औҾͷൃੜ 2. औҾͷه 3. هͷܧଓ 4.
৽͍͠هͷ༻ҙ
2.2.1 औҾͷൃੜ ೋऀؒͰऔҾ͕ߦΘΕΔɻҎԼͷྫͰ#2͔Β#9ͷૹ͕ۚऔҾͷ༰ɻ $10 औҾͷൃੜ
2.2.2 औҾͷه औҾ͕͋ͬͨ͜ͱɾऔҾͷ༰ʢ#2→#9 $10ૹۚʣΛपғʹରͯ͠Β֤ͤͯࣗʹهͤ͞Δɻ $10 औҾͷൃੜ औҾΛه
2.2.3 هͷܧଓ ୭͔ͷऔҾͷʹશһ͕֤ࣗʹه͍ͯ͘͠ಈ࡞Λهϖʔδ͕ͳ͘ͳΔ·Ͱଓ͚Δɻ औҾܧଓ ϖʔδͷݶք·Ͱه
2.2.4 ৽͍͠هͷ༻ҙ هϖʔδ͕ͳ͘ͳͬͨΒਖ਼͍͠ϓϩηεͰϖʔδΛอଘ͠ɺهாͷ࣍ϖʔδΛ༻ҙ͢Δɻ
2.2.4.1 ਖ਼͍͠อଘͷํ๏ ΠϯϓοτΛՃ͠Ξτϓοτ͢ΔϚδοΫϚγʔϯʢਖ਼͘͠ϋογϡؔʣΛ༻ҙ͢Δɻ
2.2.4.2 Ϛγʔϯͷϧʔϧ Ξτϓοτ͔ΒΠϯϓοτΛಋ͘͜ͱͰ͖ͳ͍Ұํ௨ߦʹͳ͍ͬͯΔɻ Ұํ௨ߦ
2.2.4.3 ਖ਼͍͠อଘ൪߸ Πϯϓοτ༰ʹΛՃ͑ͯɺܾΊΒΕͨ൪߸Λग़ྗͰ͖ͨͷΛਖ਼͍͠อଘ൪߸ʢ1ͭʣͱ͢Δɻ
2.2.4.4 อଘ൪߸ͷݟ͚ͭํ Ϛγʔϯ͕Ұํ௨ߦͷͨΊਖ਼͍͠อଘ൪߸Λ୳ͨ͢Ίʹͻͨ͢ΒΠϯϓοτΛߦ͏͔͠ͳ͍ɻ
2.2.4.5 อଘ൪߸ͷڞ༗ ͦͷΠϯϓοτΛΈΜͳͰߦ͍ɺਖ਼͍͠อଘ൪߸Λݟ͚ͭͨਓ͕ωοτϫʔΫશһʹڞ༗͢Δɻ 31983 !
2.2.4.6 ਖ਼͠͞ͷ֬ೝ ڞ༗͞Εͨอଘ൪߸͕ਖ਼͍͔͠ʢٻΊ͍ͯΔΞτϓοτ͕ग़ྗ͞ΕΔ͔ʣΛ֬ೝ͢Δ 31983 correct?
2.2.4.7 ͍ํ ਖ਼͍͜͠ͱ͕֬ೝͰ͖ͨΒอଘ͕ߦΘΕΔɻͭ·ΓऔҾ͕ࣄ࣮Ͱ͋Δͱ͞ΕΔɻ 31983 is correct!
2.2.4.8 ͍ํ هΛվ͟Μ͢Δͱग़ྗ͕มΘΔͨΊɺਖ਼͍͠อଘ൪߸มΘΓɺશମ͔Βड͚ೖΕΒΕͳ͍ɻ That is wrong!
2.3. ු͔ͼ্͕Δٙ هϖʔδ͕ͳ͘ͳͬͨΒਖ਼͍͠ϓϩηεͰϖʔδΛอଘ͠ɺ࣍ͷϖʔδΛ༻ҙ͢Δɻ Q. ਖ਼͍͠൪߸Λ୳͢ಈػԿͳͷ͔ʁ A. ૣ͘ݟ͚ͭͨਓʹใु͕ೖΓ·͢ɻ Q. ݹ͍ใΛվ͟Μ͠Α͏ͱͨ͠ΒͲ͏ͳΓ·͔͢ A.
ϚγʔϯͷΠϯϓοτͱͯ͠લͷϖʔδͷாͷใ͕ೖΕΒΕ·͢ɻͦͷͨΊ վ͟Μ͕͋ΔͱΞτϓοτ͕มΘͬͯ͠·͍ɺҟͳΔΞτϓοτશମͰ ίϯηϯαε͕ಘΒΕ·ͤΜɻΑͬͯࣄ࣮ͱͯ͠ೝΊΒΕ·ͤΜɻ
2.4 51%߈ܸ ωοτϫʔΫͷҎ্ͷਓ͕ؒڏِͷใΛਖ਼͍͠ͱ͢ΔखॱΛऔΕվ͟Μ͕Մೳɻ That is correct! It isn’t correct! It
isn’t correct!