ビヨンドブロックチェーン基礎 / Beyond Blockchain Basics

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Chief Science Ofﬁcer / [email protected] — — 2021-04-07 – p.1/32

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https://speakerdeck.com/ks91 — — 2021-04-07 – p.2/32

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( ) SFC ( ) CSO (Chief Science Ofﬁcer) 1993 ( ) 2006 ( ) SFC 20 P2P (Peer-to-Peer) ( 2019 9 ) 2011 2018 2019 2021 VR( ) → ( ) — — 2021-04-07 – p.3/32

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Beyond Blockchain One (BBc-1) — — 2021-04-07 – p.4/32

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Beyond Blockchain One (BBc-1) — — 2021-04-07 – p.5/32

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— — 2021-04-07 – p.6/32

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(BP : Blockchain Property ) BP-1 : BP-2 : BP-3 : ( ) ( ) BP-2 permissionless ( ) permissioned ( ) BP-2’ : — — 2021-04-07 – p.7/32

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( ) (1) (2) (3) (4) ( ) (BP-2 ) state machine replication BP-3 ( : ( )) ( ) — — 2021-04-07 – p.8/32

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1 : ( ) 2 : ( ) ⇒ ( ) ( ) ( ) ( ) ( ) → — — 2021-04-07 – p.9/32

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/ ( ) Bitcoin ( ) Open Assets Protocol (OAP) ( ) Ethereum ( ) ( ) Polkadot relay chain (parachains ↓ ) ( ) ( ) Hyperledger (Linux Foundation) Fabric (IBM/DAH), Sawtooth (Intel), Iroha ( ), Indy (Sovrin) Corda (R3), BBc-1 ( ) — — 2021-04-07 – p.10/32

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/ 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 — — 2021-04-07 – p.11/32

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( ) ↑ (BP-2 BP-2’ ) — — 2021-04-07 – p.12/32

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( ) ( ) — — 2021-04-07 – p.13/32

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( ) ( ) BP-2 ( ) — — 2021-04-07 – p.14/32

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/ Bitcoin, Ethereum BBc-1 ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ެڞۭؒ ɾτϥϯβΫγϣϯͷূڌΛແؔ܎ͳྺ࢙͕อ༗ ɾͲΕ͔ͷ୆ாΛແໃ६ʹॻ͖׵͑ͯ΋ূڌ͕࢒Δ τϥϯβΫγϣϯ ୆ா υϝΠϯ ϩʔΧϧۭؒ υϝΠϯ ϩʔΧϧۭؒ υϝΠϯ ϩʔΧϧۭؒ Ethereum ( ) — — 2021-04-07 – p.15/32

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( ( )) (BP-2 : ) ( ) ( ) : ( ) ( ) ( ) BBc-1 ( ; ) — — 2021-04-07 – p.16/32

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— — 2021-04-07 – p.17/32

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/ ( ) ( ) ( vs. ) ( ) ( ) ( ) ⇒ ( : BBc-1) : : — — 2021-04-07 – p.18/32

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→ ( ) → — — 2021-04-07 – p.19/32

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C V C ≥ V Bitcoin ( ) bitcoin Bitcoin ( ) Ethereum ( ) BBc-1 (PoCX) ( ) C ≥ V (proactive) (introspection ( ) ) ( ) — — 2021-04-07 – p.20/32

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— — 2021-04-07 – p.21/32

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Ethereum ( ) ⇒ (Casper) ( ) ⇒ ZoE (Zcash on Ethereum) ( vs. ) ( ) ⇒ Plasma ( ) ⇒ ( ) (Benevolent Dictator For Life (BDFL)) ( ) ⇒ — — 2021-04-07 – p.22/32

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DPoS (Delegated Proof of Stake) PoS Delegated ( ) stake . . . stake stake . . . — — 2021-04-07 – p.23/32

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BBc-1 ( ) ⇒ ( ) ⇒ ( vs. ) ( ) ⇒ DHT ( ) ⇒ ( ) ( ) ⇒ — — 2021-04-07 – p.24/32

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Beyond Blockchain One (BBc-1) https://beyond-blockchain.org https://github.com/beyond-blockchain (2017 10 31 ) ofﬁ[email protected] — — 2021-04-07 – p.25/32

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( ) — — 2021-04-07 – p.26/32

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— — 2021-04-07 – p.27/32

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Beyond Blockchain One (BBc-1) #JUDPJO ##D$PSF ϨοδϟʔαϒγεςϜ ΞϓϦέʔγϣϯ ͦ ͷ ଞ ͞ · ͟ · ͳ Ξ ϓ Ϧ ͷ Մ ೳ ੑ ڞ௨ϥΠϒϥϦ ##D ։ൃ߲໨ ஍ Ҭ ௨ ՟ Ξ ϓ Ϧ ϙ Π ϯ τ Ξ ϓ Ϧ དྷ ྺ ূ ໌ Ξ ϓ Ϧ ʜ ॳظʹ͓͍ͯଘࡏূ໌Λґଘ ΞϯΧϦϯά ֤ϊʔυʹ͓͚Δه࿥ʹ͸ ֤छσʔλϕʔεΛར༻Մೳ TRMJUF.Z42-ͦͷଞ%# BBc-1 σδλϧ௨՟ϥΠϒϥϦ ͦͷଞͷϥΠϒϥϦ CCDMJC 1ZUIPO (P +4 FUD ( ) ( ) — — 2021-04-07 – p.28/32

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BBc-1 ਖ਼౰ੑͷอূ 6590 جຊߏ଄ εςʔτ؅ཧ΋Մ ࣝผࢠͱެ։ݤͷ෼཭ ଟ༷ͳॺ໊ཁٻ υϝΠϯ಺Ͱͷݕূ αΠϯϦΫΤετ ࠴ݖͱͯ͠ͷΞηοτ #Z[BOUJOF1BYPT ଱ো֐ੑ ౳ ωΠςΟϒ௨՟Λ΋ͨͳ͍ υϝΠϯ಺࣏ࣗ υϝΠϯؒͷཤྺަࠩʹΑΔίϯςΩετূ໌ ॳظʹ͓͍ͯ͸ϒϩοΫνΣʔϯ΁ͷΞϯΧϦϯά ଘࡏੑͷূ໌ །Ұੑͷ߹ҙ Ψόφϯε — — 2021-04-07 – p.29/32

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BBc-1 — — 2021-04-07 – p.30/32

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BBc Trust ( ) — https://beyond-blockchain.org/public/bbc-trust.pdf — https://beyond-blockchain.org/public/bbc-trust_ja.pdf Design Paper (white paper) ( revision 0.2) — https://beyond-blockchain.org/public/bbc1-design-paper.pdf gihyo.jp ∼BBc-1 Beyond Blockchain One — https://gihyo.jp/dev/serial/01/bbc1 — — 2021-04-07 – p.31/32

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— — 2021-04-07 – p.32/32