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
R&B: When Ruby Met Bitcoin
Search
Sponsored
·
Your Podcast. Everywhere. Effortlessly.
Share. Educate. Inspire. Entertain. You do you. We'll handle the rest.
→
Joseph Ku
September 12, 2015
Technology
260
0
Share
R&B: When Ruby Met Bitcoin
* Talk @ RubyConf Taiwan 2015 (2015.09.12)
Joseph Ku
September 12, 2015
More Decks by Joseph Ku
See All by Joseph Ku
第一次去 WWDC 就上手
joseph
0
220
Swift Introduction to Swift in Ruby
joseph
0
170
手機遊戲開發的兩三事
joseph
0
120
RubyMotion Gets A Cool New Friend: mruby on iOS
joseph
2
1k
RubyMotion: Hack Your iOS App Like Never Before
joseph
5
1.1k
Other Decks in Technology
See All in Technology
AI時代に新卒採用、はじめました/junior-engineer-never-die
dmnlk
0
210
40代からのアウトプット ― 経験は価値ある学びに変わる / 20260404 Naoki Takahashi
shift_evolve
PRO
5
900
AWS DevOps Agent or Kiro の使いどころを考える_20260402
masakiokuda
0
190
AI前提とはどういうことか
daisuketakeda
0
150
Claude Teamプランの選定と、できること/できないこと
rfdnxbro
1
1.8k
「決め方」の渡し方 / How to hand over the "decision-making process"
pauli
8
1.3k
シン・リスコフの置換原則 〜現代風に考えるSOLIDの原則〜
jinwatanabe
0
150
システムは「動く」だけでは 足りない - 非機能要件・分散システム・トレードオフの基礎
nwiizo
16
5.1k
ふりかえりがなかった職能横断チームにふりかえりを導入してみて学んだこと 〜チームのふりかえりを「みんなで未来を考える場」にするプロローグ設計〜
masahiro1214shimokawa
0
250
英語翻訳を通じて 音声AIエージェント入門してみた
shichijoyuhi
0
100
Tour of Agent Protocols: MCP, A2A, AG-UI, A2UI with ADK
meteatamel
1
220
あるアーキテクチャ決定と その結果/architecture-decision-and-its-result
hanhan1978
2
540
Featured
See All Featured
Collaborative Software Design: How to facilitate domain modelling decisions
baasie
0
190
Build your cross-platform service in a week with App Engine
jlugia
234
18k
Accessibility Awareness
sabderemane
0
94
The Curious Case for Waylosing
cassininazir
0
290
Leadership Guide Workshop - DevTernity 2021
reverentgeek
1
260
How to optimise 3,500 product descriptions for ecommerce in one day using ChatGPT
katarinadahlin
PRO
1
3.5k
The State of eCommerce SEO: How to Win in Today's Products SERPs - #SEOweek
aleyda
2
10k
StorybookのUI Testing Handbookを読んだ
zakiyama
31
6.7k
Ten Tips & Tricks for a 🌱 transition
stuffmc
0
95
Why Our Code Smells
bkeepers
PRO
340
58k
Git: the NoSQL Database
bkeepers
PRO
432
67k
Applied NLP in the Age of Generative AI
inesmontani
PRO
4
2.2k
Transcript
RubyConf Taiw an 2015 R&B: When Ruby Met Bitcoin
Who Am I?
古傑芳
@josephku
None
None
2009
Ruby
2010
2011
2012
Bitcoin
R & B
Rhythm & Blues
Ruby & Bitcoin
When Ruby Met Bitcoin
Yukihiro Matsumoto
Matz
None
None
Satoshi Nakamoto
None
None
None
None
Yukihiro Matsumoto Satoshi Nakamoto
Yukihiro Matsumoto Satoshi Nakamoto
Yukihiro Matsumoto Satoshi Nakamoto
None
None
None
None
None
Money
None
Money?
Currency
None
None
None
None
None
None
None
None
None
None
Bitcoin
Have you heard of Bitcoin? I have one bitcoin.
None
v0.11.0
!
Node.js
v0.12.7
21 Million
10-6 btc = 1 bit
10-8 btc = 1 satoshi
Address
Wallet
Demo Time!
Blockchain
Block
None
SHA256(Block Data + Nonce) < Target
Difficulty = Maximum Target / Target
None
None
None
Internet of Things
Mining
None
None
NT$ 105
0.00815 BTC
None
Bitcoin Only!!
None
None
After a month…
0.00000422 BTC
7.394Mh/s
23,285 days
63.79 years
Can I just pay by NT$105?
None
None
None
None
Game
None
None
None
None
1 = 1 bit
None
None
Demo Time!
None
Block Size
None
None
None
Any questions?
Thank you!