フィンテック 2018夏 第5-6回「ブロックチェーン」 / Blockchain

2018年6月25日(月)、早稲田大学 大学院経営管理研究科の授業「フィンテック ─ 金融革新とインターネット」第5-6回で使用したスライドです。

Transcript

1. —
   5-6
   — 2018
   ( )
   ks91@sfc.wide.ad.jp
   — 2018 5-6 — 2018-06-25 – p.1/77
   

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2. ( )
   1 6 11 (1) •
   2 6 11 (2) •
   3 6 18 (1) •
   4 6 18 (2) •
   5 6 25 (1) •
   6 6 25 (2) •
   7 7 2 (1)
   8 7 2 (2)
   9 7 9 (2018 APSIG : Asia Pacific School on Internet Governance)
   10 7 9 (2018 APSIG)
   11 7 16 (1)
   12 7 16 (2)
   13 7 23 (1)
   14 7 23 (2)
   15 7 30 (1)
   16 7 30 (2)
   — 2018 5-6 — 2018-06-25 – p.2/77
   

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3. ( ) ( )
   DASF /
   — 2018 5-6 — 2018-06-25 – p.3/77
   

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4. DASF /
   https://dasf.global
   P2P OS
   (3D )
   — 2018 5-6 — 2018-06-25 – p.4/77
   

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5. 2018
   SFC ( )
   1 : 8 4 ( )∼8 ( ) [4 5 ]
   2 : 8 20 ( )∼24 ( ) [4 5 ]
   5,000 ( )
   ( )
   / /
   https://academy-camp.org/2018/06/12/acamp2018s-staff-cfp/
   — 2018 5-6 — 2018-06-25 – p.5/77
   

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6. SF
   — 2018 5-6 — 2018-06-25 – p.6/77
   

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7. WIRED vol.25 The Power of Blockchain
   (2016)
   :
   5
   Family
   ( )
   — 2018 5-6 — 2018-06-25 – p.7/77
   

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8. SFC
   ⇒
   — 2018 5-6 — 2018-06-25 – p.8/77
   

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9. — 2018 5-6 — 2018-06-25 – p.9/77
   

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10. 1.
    2.
    3.
    4.
    5.
    6.
    7. :
    8.
    — 2018 5-6 — 2018-06-25 – p.10/77
    

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11. 1.
    — 2018 5-6 — 2018-06-25 – p.11/77
    

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12. 2.
    (1) (end; )
    (2)
    2018 6 23 ( ) 17:59 JST
    Course N@vi
    — 2018 5-6 — 2018-06-25 – p.12/77
    

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13. 24 21 (6/24 11:00 )
    , , ,
    (correspondent; ), , , , , ,
    , , , , , ,
    ,
    — 2018 5-6 — 2018-06-25 – p.13/77
    

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14. S
    2011
    ⇒
    ↔
    ↔
    — 2018 5-6 — 2018-06-25 – p.14/77
    

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15. S
    DASF
    ( )
    . . .
    ⇒
    and/or
    — 2018 5-6 — 2018-06-25 – p.15/77
    

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16. K
    “ ” “ ”
    . . .
    ( )
    ⇒
    / = , / =
    — 2018 5-6 — 2018-06-25 – p.16/77
    

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17. K
    ◦◦
    ⇒
    =
    — 2018 5-6 — 2018-06-25 – p.17/77
    

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18. Y
    ⇒
    ( )
    — 2018 5-6 — 2018-06-25 – p.18/77
    

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19. U
    ⇒
    — 2018 5-6 — 2018-06-25 – p.19/77
    

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20. 2.
    — 2018 5-6 — 2018-06-25 – p.20/77
    

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21. — 2018 5-6 — 2018-06-25 – p.21/77
    

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22. SHA-1
    https://shattered.it
    2017 2 Google
    (CWI)
    — 2018 5-6 — 2018-06-25 – p.22/77
    

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23. — 2018 5-6 — 2018-06-25 – p.23/77
    

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24. (RSA)
    RSA (RSA : Rivest, Shamir, Adleman)
    ECDSA ( DSA : Digital Signature Algorithm)
    — 2018 5-6 — 2018-06-25 – p.24/77
    

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25. : < , >
    :
    : < , , >
    : OK NG
    — 2018 5-6 — 2018-06-25 – p.25/77
    

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26. ( ) ← CA
    — 2018 5-6 — 2018-06-25 – p.26/77
    

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27. 3.
    (by Satoshi Nakamoto)
    Satoshi
    ( )
    (block; , ) ←
    (chain; ) ←
    — 2018 5-6 — 2018-06-25 – p.27/77
    

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28. 1)
    2)
    3)
    ⇒
    ⇒
    ·
    / (dependable )
    — 2018 5-6 — 2018-06-25 – p.28/77
    

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29. (1)
    ( )
    ⇒ P2P
    ⇒ ( )
    — 2018 5-6 — 2018-06-25 – p.29/77
    

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30. (2)
    (double spending) ( )
    ⇒
    ⇒ ( )
    →
    ( ) ( )
    ⇒ → →
    ⇒ →
    — 2018 5-6 — 2018-06-25 – p.30/77
    

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31. —
    — 2018 5-6 — 2018-06-25 – p.31/77
    

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32. (1)
    2,100 cm3 (cc)
    1 1cm3
    ( )
    10
    12.5cm3
    →
    10
    4
    ( 21 )
    2009 1 50cm3
    — 2018 5-6 — 2018-06-25 – p.32/77
    

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33. (2)
    . . .
    →
    — 2018 5-6 — 2018-06-25 – p.33/77
    

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34. ∼
    ท൪߸O ท൪߸O ท൪߸O
    લทͷμΠδΣετ
    λʔήοτҎԼͰͳ͍ͱ͍͚ͳ͍
    
    ͸Έͩ͠ίʔφʔ
    μΠδΣετ͕λʔήοτҎԼʹͳΔΑ͏ʹೖΕΔద౰ͳ಺༰
    
    ( )
    — 2018 5-6 — 2018-06-25 – p.34/77
    

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35. ∼
    ϖʔδ൪߸O ϖʔδ൪߸O ϖʔδ൪߸O ϖʔδ൪߸O
    ϖʔδ൪߸O ϖʔδ൪߸O ϖʔδ൪߸O
    ϖʔδ൪߸O
    ͬͪ͜ͷྺ࢙͕༗ޮ
    ()
    — 2018 5-6 — 2018-06-25 – p.35/77
    

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36. ( )
    1. 10 ( )
    2.
    3. 1
    — 2018 5-6 — 2018-06-25 – p.36/77
    

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37. /DLT(Distributed Ledger Technology)
    ਖ਼౰ੑͷอূ
    ྫ6590ߏ଄ͱσδλϧॺ໊
    ଘࡏੑͷূ໌
    ྫ࡞ۀূ໌෇͖ϋογϡνΣʔϯ
    །Ұੑͷ߹ҙ
    ྫφΧϞτɾίϯηϯαε
    ϧʔϧͷهड़
    ྫ#5$ͷҠస
    ɾ
    τϥϯβΫγϣϯͷ಺༰͕վ͟ΜͰ͖ͣɺ
    ɾ
    ͦͷΞηοτʹؔ͢ΔաڈͷτϥϯβΫγϣϯྻʹরΒͯ͠ໃ६͕ͳ͘ɺ
    ɾ
    ͔ͭɺਖ਼౰ͳϢʔβʹΑΓ౤ೖ͞Ε͍ͯΔ͜ͱΛอূ͢Δ
    ɾաڈʹ͋ͬͨτϥϯβΫγϣϯͷূڌΛຣফͰ͖ͣɺ
    ɾ
    ͔ͭɺաڈʹͳ͔ͬͨτϥϯβΫγϣϯͷূڌΛ፻଄Ͱ͖ͳ͍
    ɾໃ६͢Δ;ͨͭͷτϥϯβΫγϣϯ͕౤ೖ͞Εͨ৔߹ɺ
    ɹ ͍ͣΕ
    ؔ༩͢Δશһ͕ಉ͡ยํΛબΜͰྺ࢙ͷதʹҐஔ͚ͮΔ
    ɾΞϓϦέʔγϣϯϩδοΫ Կ͕ਖ਼͍͠τϥϯβΫγϣϯ͔ΛܾΊΔ
    
    End-to-End
    ( ) ( )
    — 2018 5-6 — 2018-06-25 – p.37/77
    

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38. — 2018 5-6 — 2018-06-25 – p.38/77
    

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39. 10 WaCo
    WaCo : Waseda Coin
    1)
    2)
    — 2018 5-6 — 2018-06-25 – p.39/77
    

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40. ⇒
    — 2018 5-6 — 2018-06-25 – p.40/77
    

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41. 4.
    — 2018 5-6 — 2018-06-25 – p.41/77
    

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42. (Hyperledger )
    ( )
    ( )
    ( )
    IoT
    / /
    ( )
    — 2018 5-6 — 2018-06-25 – p.42/77
    

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43. : . . .
    : Proof of Existence, Everledger, Factom, . . .
    ( )
    ( )
    ( )
    — 2018 5-6 — 2018-06-25 – p.43/77
    

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44. ( KVS DHT)
    — 2018 5-6 — 2018-06-25 – p.44/77
    

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45. 5.
    — 2018 5-6 — 2018-06-25 – p.45/77
    

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46. (2009.1-2018.6)
    : 2
    . . .
    — 2018 5-6 — 2018-06-25 – p.46/77
    

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47. vs.
    — 2018 5-6 — 2018-06-25 – p.47/77
    

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48. The DAO ( )
    The DAO
    Split ( ) 360 ETH (50∼60 ) (2016/6/17)
    ( → )
    ( → ; )
    ( )
    (2016/7/20 )
    — 2018 5-6 — 2018-06-25 – p.48/77
    

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49. — 2018 5-6 — 2018-06-25 – p.49/77
    

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50. :
    ⇒
    ⇒
    — 2018 5-6 — 2018-06-25 – p.50/77
    

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51. Ether
    Ether
    Ether
    ( ) Ether
    Ether ( )
    . . .
    . . .
    BTC
    Everledger, Factom
    ⇒
    ( )
    — 2018 5-6 — 2018-06-25 – p.51/77
    

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52. 3
    1. ( : UTXO )
    ⇒ ( )
    2. ( : )
    ⇒
    3. ( : )
    TX ⇒
    2 3
    — 2018 5-6 — 2018-06-25 – p.52/77
    

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53. /DLT
    Bitcoin, Ethereum DLT BBc-1
    ( )
    ( ) ( ) ( ) ( )
    ( )
    ( ) ( ) ( )
    Ethereum
    ( ) ( )
    — 2018 5-6 — 2018-06-25 – p.53/77
    

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54. ( ( ))
    ( )
    DLT ( )
    ( )
    ( )
    . . .
    BBc-1 ( )
    — 2018 5-6 — 2018-06-25 – p.54/77
    

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55. →
    ( )
    — 2018 5-6 — 2018-06-25 – p.55/77
    

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56. C V C ≥ V
    Bitcoin ( ) bitcoin
    Bitcoin ( )
    Ethereum
    DLT ( )
    BBc-1 ( ) ( )
    C ≥ V
    (proactive) (introspection ( ) )
    ( )
    — 2018 5-6 — 2018-06-25 – p.56/77
    

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57. — 2018 5-6 — 2018-06-25 – p.57/77
    

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58. Ethereum ( )
    ( )
    ⇒ (Casper)
    ( )
    ⇒ ZoE (Zcash on Ethereum)
    ( vs. )
    ( )
    ⇒ Plasma
    ( )
    ⇒ ( ) (Benevolent Dictator For Life (BDFL))
    ( )
    ⇒
    — 2018 5-6 — 2018-06-25 – p.58/77
    

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59. BBc-1 ( )
    ( )
    ⇒
    ( )
    ⇒
    ( vs. )
    ( )
    ⇒ DHT
    ( )
    ⇒ ( )
    ( )
    ⇒
    — 2018 5-6 — 2018-06-25 – p.59/77
    

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60. 6.
    — 2018 5-6 — 2018-06-25 – p.60/77
    

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61. ( )
    (by ) (since 1984) ( ) ( )
    ( )
    . . .
    ( )
    ⇒ . . .
    — 2018 5-6 — 2018-06-25 – p.61/77
    

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62. ( )
    ( ) ( ) ( ) ( )
    (by )
    — 2018 5-6 — 2018-06-25 – p.62/77
    

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63. Q. ( )
    ( = / = )
    ⇒
    — 2018 5-6 — 2018-06-25 – p.63/77
    

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64. ( )
    ( ) ( )
    — 2018 5-6 — 2018-06-25 – p.64/77
    

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65. ( )
    ( )
    /
    /
    — 2018 5-6 — 2018-06-25 – p.65/77
    

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66. — ( )
    1. ( )
    2. ( )
    3. ( )
    — 2018 5-6 — 2018-06-25 – p.66/77
    

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67. → 30
    : ×
    — 2018 5-6 — 2018-06-25 – p.67/77
    

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68. OS (2007)
    — 2018 5-6 — 2018-06-25 – p.68/77
    

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69. Amazon Go
    →
    — 2018 5-6 — 2018-06-25 – p.69/77
    

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70. ( JPY )
    MUFG J S
    (“Cause-Oriented Economy”)
    ⇒
    — 2018 5-6 — 2018-06-25 – p.70/77
    

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71. (4 )
    ( )
    — 2018 5-6 — 2018-06-25 – p.71/77
    

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72. →
    (AI )
    →
    ←
    →
    →
    / /
    — 2018 5-6 — 2018-06-25 – p.72/77
    

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73. ( )
    ( )
    — 2018 5-6 — 2018-06-25 – p.73/77
    

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74. 7. :
    — 2018 5-6 — 2018-06-25 – p.74/77
    

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75. 8.
    — 2018 5-6 — 2018-06-25 – p.75/77
    

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76. 3.
    2018 6 30 ( ) 17:59 JST
    Course N@vi
    — 2018 5-6 — 2018-06-25 – p.76/77
    

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77. — 2018 5-6 — 2018-06-25 – p.77/77
    

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