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

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。

Kenji Saito
PRO

June 25, 2018
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  1. 5-6
    — 2018
    ( )
    [email protected]
    — 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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