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ブロックチェーンの課題 〜そしてそれを乗り越えた先に〜 / Problems of Block...
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Kenji Saito
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October 31, 2018
Technology
380
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ブロックチェーンの課題 〜そしてそれを乗り越えた先に〜 / Problems of Blockchain, and Beyond
2018年10月31日(水)、品川にて開催された「NTTデータ テクノロジーカンファレンス 2018」の基調講演にて使用したスライドです。
Kenji Saito
PRO
October 31, 2018
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Transcript
∼ ∼ SFC ( )
[email protected]
∼ ∼ — 2018-10-31
– p.1/16
( ) SFC ( ) CSO (Chief Science Officer) 1993
( ) 2006 ( ) SFC 18 P2P (Peer-to-Peer) 2011 SFC 2018 → ( ) ∼ ∼ — 2018-10-31 – p.2/16
∼ ∼ — 2018-10-31 – p.3/16
( ) (1) (2) (3) (4) ( ) state machine
replication ∼ ∼ — 2018-10-31 – p.4/16
/ ਖ਼ੑͷอূ ྫ6590ߏͱσδλϧॺ໊ ଘࡏੑͷূ໌ ྫ࡞ۀূ໌͖ϋογϡνΣʔϯ །Ұੑͷ߹ҙ ྫφΧϞτɾίϯηϯαε ϧʔϧͷهड़ ྫ#5$ͷҠస ɾ
τϥϯβΫγϣϯͷ༰͕վ͟ΜͰ͖ͣɺ ɾ ͦͷΞηοτʹؔ͢ΔաڈͷτϥϯβΫγϣϯྻʹরΒͯ͠ໃ६͕ͳ͘ɺ ɾ ͔ͭɺਖ਼ͳϢʔβʹΑΓೖ͞Ε͍ͯΔ͜ͱΛอূ͢Δ ɾաڈʹ͋ͬͨτϥϯβΫγϣϯͷূڌΛຣফͰ͖ͣɺ ɾ ͔ͭɺաڈʹͳ͔ͬͨτϥϯβΫγϣϯͷূڌΛ፻Ͱ͖ͳ͍ ɾໃ६͢Δ;ͨͭͷτϥϯβΫγϣϯ͕ೖ͞Εͨ߹ɺ ɹ ͍ͣΕ ؔ༩͢Δશһ͕ಉ͡ยํΛબΜͰྺ࢙ͷதʹҐஔ͚ͮΔ ɾΞϓϦέʔγϣϯϩδοΫ Կ͕ਖ਼͍͠τϥϯβΫγϣϯ͔ΛܾΊΔ ( ) ∼ ∼ — 2018-10-31 – p.5/16
/ ਖ਼ੑͷอূ ྫ6590ߏͱσδλϧॺ໊ ଘࡏੑͷূ໌ ྫ࡞ۀূ໌͖ϋογϡνΣʔϯ །Ұੑͷ߹ҙ ྫφΧϞτɾίϯηϯαε ϧʔϧͷهड़ ྫ#5$ͷҠస ɾ
τϥϯβΫγϣϯͷ༰͕վ͟ΜͰ͖ͣɺ ɾ ͦͷΞηοτʹؔ͢ΔաڈͷτϥϯβΫγϣϯྻʹরΒͯ͠ໃ६͕ͳ͘ɺ ɾ ͔ͭɺਖ਼ͳϢʔβʹΑΓೖ͞Ε͍ͯΔ͜ͱΛอূ͢Δ ɾաڈʹ͋ͬͨτϥϯβΫγϣϯͷূڌΛຣফͰ͖ͣɺ ɾ ͔ͭɺաڈʹͳ͔ͬͨτϥϯβΫγϣϯͷূڌΛ፻Ͱ͖ͳ͍ ɾໃ६͢Δ;ͨͭͷτϥϯβΫγϣϯ͕ೖ͞Εͨ߹ɺ ɹ ͍ͣΕ ؔ༩͢Δશһ͕ಉ͡ยํΛબΜͰྺ࢙ͷதʹҐஔ͚ͮΔ ɾΞϓϦέʔγϣϯϩδοΫ Կ͕ਖ਼͍͠τϥϯβΫγϣϯ͔ΛܾΊΔ σδλϧॺ໊ͰͰ͖Δʂ τϥετʹཔΔඞཁ͕͋ͬͨʂ ઃܭʹΑͬͯෆཁʹͰ͖Δʂ ΞϓϦέʔγϣϯʂ ( ) ∼ ∼ — 2018-10-31 – p.5/16
→ 1 : ( ) ↑ 2 : ( )
( ) → ∼ ∼ — 2018-10-31 – p.6/16
( ) / ( ) ∼ ∼ — 2018-10-31 –
p.7/16
IP (Internet Protocol) : IP : (IP ) : :
∼ ∼ — 2018-10-31 – p.8/16
. . . ( : ) ( : ) ↑
∼ ∼ — 2018-10-31 – p.9/16
BBc-1 (Beyond Blockchain One) / ∼ ∼ — 2018-10-31 –
p.10/16
/ Bitcoin, Ethereum DLT BBc-1 ( ) ( ) (
) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) Ethereum ( ) ( ) ∼ ∼ — 2018-10-31 – p.11/16
(finality ) ( ( )) ( ) DLT ( )
( ) : ( ) ( ) ( ) BBc-1 ( ; ) ∼ ∼ — 2018-10-31 – p.12/16
/ ( ) ( ) ( vs. ) ( )
( ) ( ) ⇒ ( : BBc-1) : : ∼ ∼ — 2018-10-31 – p.13/16
Ethereum ( ) ⇒ (Casper) ( ) ⇒ ZoE (Zcash
on Ethereum) ( vs. ) ( ) ⇒ Plasma ( ) ⇒ ( ) (Benevolent Dictator For Life (BDFL)) ( ) ⇒ ∼ ∼ — 2018-10-31 – p.14/16
BBc-1 ( ) ⇒ ( ) ⇒ : ( vs.
) ( ) ⇒ DHT ( ) ⇒ ( ) ( ) ⇒ ∼ ∼ — 2018-10-31 – p.15/16
( ) ( ) ( ) ( ) ↑ AI
BBc-1 (Beyond Blockchain One) ∼ ∼ — 2018-10-31 – p.16/16