Upgrade to Pro — share decks privately, control downloads, hide ads and more …

R&B: When Ruby Met Bitcoin

Avatar for Joseph Ku Joseph Ku
September 12, 2015
Technology
0
250

R&B: When Ruby Met Bitcoin

* Talk @ RubyConf Taiwan 2015 (2015.09.12)

Avatar for Joseph Ku

Joseph Ku

September 12, 2015
Tweet

More Decks by Joseph Ku

See All by Joseph Ku
第一次去 WWDC 就上手
Avatar for Joseph Ku joseph
0
210
Swift Introduction to Swift in Ruby
Avatar for Joseph Ku joseph
0
160
手機遊戲開發的兩三事
Avatar for Joseph Ku joseph
0
120
RubyMotion Gets A Cool New Friend: mruby on iOS
Avatar for Joseph Ku joseph
2
990
RubyMotion: Hack Your iOS App Like Never Before
Avatar for Joseph Ku joseph
5
1k

Other Decks in Technology

See All in Technology
AI時代、1年目エンジニアの悩み
Avatar for JINYOUNG KIM jin4
1
140
ブロックテーマでサイトをリニューアルした話 / 2026-01-31 Kansai WordPress Meetup
Avatar for Toro_Unit (Hiroshi Urabe) torounit
0
340
レガシー共有バッチ基盤への挑戦 - SREドリブンなリアーキテクチャリングの取り組み
Avatar for Konishi tatsuhiro tatsukoni
0
160
2026年、サーバーレスの現在地 -「制約と戦う技術」から「当たり前の実行基盤」へ- /serverless2026
Avatar for Serverless Operations slsops
2
140
toCプロダクトにおけるAI機能開発のしくじりと学び / ai-product-failures-and-learnings
Avatar for rince rince
6
5.1k
セキュリティについて学ぶ会 / 2026 01 25 Takamatsu WordPress Meetup
Avatar for Rocket Martue rocketmartue
1
250
Introduction to Sansan, inc / Sansan Global Development Center, Inc.
Avatar for Sansan, Inc. sansan33
PRO
0
2.9k
システムのアラート調査をサポートするAI Agentの紹介/Introduction to an AI Agent for System Alert Investigation
Avatar for SadayoshiTada taddy_919
2
1.4k
学生・新卒・ジュニアから目指すSRE
Avatar for Hiroya Onoe hiroyaonoe
1
370
Amazon Bedrock AgentCore 認証・認可入門
Avatar for iganin hironobuiga
2
480
Databricks Free Edition講座 データサイエンス編
Avatar for Takaaki Yayoi taka_aki
0
270
Werner Vogelsが14年間 問い続けてきたこと
Avatar for Yusuke Shimizu yusukeshimizu
2
300

Featured

See All Featured
No one is an island. Learnings from fostering a developers community.
Avatar for Antonio thoeni
21
3.6k
Tips & Tricks on How to Get Your First Job In Tech
Avatar for Honza Javorek honzajavorek
0
420
The Psychology of Web Performance [Beyond Tellerrand 2023]
Avatar for Tammy Everts tammyeverts
49
3.3k
The Anti-SEO Checklist Checklist. Pubcon Cyber Week
Avatar for Ryan Jones ryanjones
0
53
A Modern Web Designer's Workflow
Avatar for Chris Coyier chriscoyier
698
190k
For a Future-Friendly Web
Avatar for Brad Frost brad_frost
182
10k
How to audit for AI Accessibility on your Front & Back End
Avatar for davetheseo davetheseo
0
150
Fantastic passwords and where to find them - at NoRuKo
Avatar for Phil Nash philnash
52
3.6k
Intergalactic Javascript Robots from Outer Space
Avatar for Vicent Martí tanoku
273
27k
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
Avatar for Eileen M. Uchitelle eileencodes
26
3.3k
[RailsConf 2023 Opening Keynote] The Magic of Rails
Avatar for Eileen M. Uchitelle eileencodes
31
9.9k
How Fast Is Fast Enough? [PerfNow 2025]
Avatar for Tammy Everts tammyeverts
3
440

Transcript

  1. RubyConf Taiw an 2015 R&B: When Ruby Met Bitcoin

  2. Who Am I?

  3. 古傑芳

  4. @josephku

  5. None
  6. None

  7. 2009

  8. Ruby

  9. 2010

  10. 2011

  11. 2012

  12. Bitcoin

  13. R & B

  14. Rhythm & Blues

  15. Ruby & Bitcoin

  16. When Ruby Met Bitcoin

  17. Yukihiro Matsumoto

  18. Matz

  19. None
  20. None

  21. Satoshi Nakamoto

  22. None
  23. None
  24. None
  25. None

  26. Yukihiro Matsumoto Satoshi Nakamoto

  27. Yukihiro Matsumoto Satoshi Nakamoto

  28. Yukihiro Matsumoto Satoshi Nakamoto

  29. None
  30. None
  31. None
  32. None
  33. None

  34. Money

  35. None

  36. Money?

  37. Currency

  38. None
  39. None
  40. None
  41. None
  42. None
  43. None
  44. None
  45. None
  46. None
  47. None

  48. Bitcoin

  49. Have you heard of Bitcoin? I have one bitcoin.

  50. None

  51. v0.11.0

  52. !

  53. Node.js

  54. v0.12.7

  55. 21 Million

  56. 10-6 btc = 1 bit

  57. 10-8 btc = 1 satoshi

  58. Address

  59. Wallet

  60. Demo Time!

  61. Blockchain

  62. Block

  63. None

  64. SHA256(Block Data + Nonce) < Target

  65. Difficulty = Maximum Target / Target

  66. None
  67. None
  68. None

  69. Internet of Things

  70. Mining

  71. None
  72. None

  73. NT$ 105

  74. 0.00815 BTC

  75. None

  76. Bitcoin Only!!

  77. None
  78. None

  79. After a month…

  80. 0.00000422 BTC

  81. 7.394Mh/s

  82. 23,285 days

  83. 63.79 years

  84. Can I just pay by NT$105?

  85. None
  86. None
  87. None
  88. None

  89. Game

  90. None
  91. None
  92. None
  93. None

  94. 1 = 1 bit

  95. None
  96. None

  97. Demo Time!

  98. None

  99. Block Size

  100. None
  101. None
  102. None

  103. Any questions?

  104. Thank you!