Slide 2
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https://speakerdeck.com/ks91
— — 2022-02-16 – p.2/43
Slide 3
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( )
SFC ( )
CSO (Chief Science Officer)
1993 ( )
2006 ( )
SFC
21 P2P (Peer-to-Peer)
2011
2018 2019
VR 2021.7 VR 2021.8 “ALL THESE WORLDS ARE YOURS”
VR 2021.9 & VR 2021.12
( (VR) )
→ ( )
— — 2022-02-16 – p.3/43
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Linux Foundation
Hyperledger
R3 Corda
Web3 Foundation Polkadot
( )
— — 2022-02-16 – p.4/43
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:
Kenji Saito, Akimitsu Shiseki, Mitsuyasu Takada, Hiroki Yamamoto, Masaaki
Saitoh, Hiroaki Ohkawa, Hirofumi Andou, Naotake Miyamoto, Kazuaki
Yamakawa, Kiyoshi Kurakawa, Tomohiro Yabushita, Yuji Yamada, Go Masuda,
Kazuyuki Masuda, “Requirement Analyses and Evaluations of Blockchain
Platforms per Possible Use Cases”
https://arxiv.org/abs/2103.03209
( )
— — 2022-02-16 – p.5/43
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(Linux Foundation)
Fabric (IBM), Sawtooth (Intel), Iroha ( ),
Indy (Sovrin), Besu (ConsenSys)
Corda (R3)
Polkadot (Web3)
BBc-1 ( )
DLT
— — 2022-02-16 – p.6/43
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(BP : Blockchain Property )
BP-1 :
BP-2 :
BP-3 : ( )
( )
BP-2 (BP-2 )
permissionless ( ) permissioned ( )
BP-2’ :
— — 2022-02-16 – p.7/43
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( )
BP-1 ( ), BP-2 ( )
BBc-1 f : → BP-3
( )
( )
( ) ← BP-2
← BP-3 (?) ( )
( ) ← BP-3
( BP-3 proof-of-work )
+ ← BP-{1,2}
— — 2022-02-16 – p.8/43
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[Lamport 1984][Schneider 1990]
(1)
(2)
(3)
(4) ( )
←
↑
permissioned
— — 2022-02-16 – p.9/43
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(n ≥ 3f + 1 )
SMRP (State Machine Replication Problem)
SMRP-1 ( )
SMRP-2
:
=
— — 2022-02-16 – p.10/43
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/DLT
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
BP-1, BP-3, BP-2 ( )
— — 2022-02-16 – p.11/43
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(Linux Foundation)
https://www.hyperledger.org
Apache License, Version 2.0
— — 2022-02-16 – p.12/43
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/
:
Proposal → Incubation → Active → Deprecated → End of Life
— — 2022-02-16 – p.13/43
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( https://www.hyperledger.org/about/members )
— — 2022-02-16 – p.14/43
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Fabric (IBM)
IBM Digital Asset Holdings
http://hyperledger-fabric.readthedocs.io/en/latest/
State : Active
— — 2022-02-16 – p.15/43
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( )
( )
— — 2022-02-16 – p.16/43
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Fabric –
(Docker) (chaincode)
BFT
, ,
RocksDB CA PKI
v1.0 ( v2.0) DB CA
BFT : Byzantine Fault Tolerance ( )
CA : Certificate Authority ( )
PKI : Public Key Infrastructure ( )
— — 2022-02-16 – p.17/43
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Sawtooth (Intel)
https://github.com/hyperledger/sawtooth-core
State : Active
— — 2022-02-16 – p.18/43
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( )
(permissioned) (permissionless)
Proof of Elapsed Time (PoET)
Proof of Work ( )
(Intel )
/
Transaction Families
— — 2022-02-16 – p.19/43
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Sawtooth –
(transaction families)
(PoET ) PBFT (Practical BFT)
PoET ( )
(transaction families)
— — 2022-02-16 – p.20/43
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Iroha ( )
https://github.com/hyperledger/iroha
State : Active
— — 2022-02-16 – p.21/43
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( )
DLT
:
C++
— — 2022-02-16 – p.22/43
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Iroha –
Iroha EVM
Sumeragi (BFT) → YAC (FT)
+ ,
EVM : Ethereum Virtual Machine (Ethereum )
FT : Fault Tolerance ( ) ( )
— — 2022-02-16 – p.23/43
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Indy (Sovrin)
https://github.com/hyperledger/indy-node
State : Active
ID
Hyperledger
ID
— — 2022-02-16 – p.24/43
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Indy –
ID
RBFT (Redundant BFT)
— — 2022-02-16 – p.25/43
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Besu (ConsenSys)
https://besu.hyperledger.org/en/stable/
State : Active
Ethereum
Quorum
— — 2022-02-16 – p.26/43
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Besu –
EVM
GHOST → Casper, PoA, etc.
+ PoW → Casper,
PoA : Proof of Authority
— — 2022-02-16 – p.27/43
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Corda (R3)
https://github.com/corda/corda
— — 2022-02-16 – p.28/43
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R3
R3CEV
77 (2017 2 )
3 SBI
R3Net( )
Corda
— — 2022-02-16 – p.29/43
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Corda
Corda :
BP-{1,2,3}
:
— — 2022-02-16 – p.30/43
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( )
+
CAP
( Polkadot (?) )
— — 2022-02-16 – p.31/43
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Corda –
JVM
( )
(Uniqueness Services)
UTXO X.509 PKI
( )
JVM : Java Virtual Machine (Java )
X.509 : PKI
— — 2022-02-16 – p.32/43
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Polkadot (Web3 Foundation)
https://polkadot.network/PolkaDotPaper.pdf
— — 2022-02-16 – p.33/43
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Polkadot –
, Substrate
BFT
( )
( )
Bitcoin, Ethereum
DOT
— — 2022-02-16 – p.34/43
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BBc-1 (Beyond Blockchain One)
https://github.com/beyond-blockchain
https://beyond-blockchain.org
— — 2022-02-16 – p.35/43
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Proof of Work
Bitcoin ( )
BBc Trust ( )
https://github.com/beyond-blockchain/bbc1/blob/develop/docs/BBc-trust.pdf ( )
https://github.com/beyond-blockchain/bbc1/blob/develop/docs/BBc-trust_ja.pdf ( )
Design Paper (white paper)
https://github.com/beyond-blockchain/bbc1/blob/develop/docs/BBc-1_design_paper.pdf
— — 2022-02-16 – p.36/43
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BBc-1
— — 2022-02-16 – p.37/43
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BBc-1 –
(Python → bbc1-lib-contracts?)
PoCX ( ) ( DAG)
( )
UTXO/
(Proof of Context)
— — 2022-02-16 – p.38/43
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(D)LT
— — 2022-02-16 – p.39/43
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( )
(1)
(2)
(3)
(4) ( )
⇒
— — 2022-02-16 – p.40/43
Slide 41
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( )
(by ) (since 1984) ( ) ( )
( )
. . . ( )
⇒ state machine replication
— — 2022-02-16 – p.41/43
Slide 42
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( )
( ) ( ) ( ) ( )
( )
(by )
( ) → — — 2022-02-16 – p.42/43
Slide 43
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— — 2022-02-16 – p.43/43