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ハイパーレッジャーとその他の分散レッジャー技術 / Hyperledger and Other...
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Kenji Saito
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July 26, 2017
Technology
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640
ハイパーレッジャーとその他の分散レッジャー技術 / Hyperledger and Other Distributed Ledger Technology
ブロックチェーンハブ主催で開催しているブロックチェーン基盤技術講義『ハイパーレッジャーとその他の分散レッジャー技術』のスライドです。2017年7月26日(水) に使用しました。
Kenji Saito
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July 26, 2017
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Transcript
CSO / SFC
[email protected]
— — 2017-07-26 – p.1/39
( ) SFC ( ) CSO (Chief Science Officer) CEO
1993 M.Eng ( ) 2006 ( ) SFC 16 P2P 2011 → ( ) — — 2017-07-26 – p.2/39
Linux Foundation Hyperledger R3CEV Corda IoT IOTA Tangle ( )
— — 2017-07-26 – p.3/39
1. DLT 2. (Linux Foundation) 3. Fabric (IBM), Sawtooth (Intel),
Iroha ( ) 4. Corda (R3) Tangle (IOTA) 5. DLT — — 2017-07-26 – p.4/39
1. DLT DLT : Distributed Ledger Technology ( ) —
— 2017-07-26 – p.5/39
Q. ( ) ( ) ( = / = )
— — 2017-07-26 – p.6/39
/DLT End-to-End ( ) ( ) — — 2017-07-26 –
p.7/39
2. (Linux Foundation) https://www.hyperledger.org Apache License, Version 2.0 — —
2017-07-26 – p.8/39
/ : Proposal → Incubation → Active → Deprecated →
End of Life — — 2017-07-26 – p.9/39
( https://www.hyperledger.org/about/members ) — — 2017-07-26 – p.10/39
( ) ( ) ( ) IoT / / (
) — — 2017-07-26 – p.11/39
( = ) ( ) ( ) ↑ — —
2017-07-26 – p.12/39
3. 3-1. Fabric (IBM) 3-2. Sawtooth (Intel) 3-3. Iroha (
) 3-4. Burrow (Monax) 3-5. Indy — — 2017-07-26 – p.13/39
3-1. Fabric (IBM) IBM Digital Asset Holdings http://hyperledger-fabric.readthedocs.io/en/latest/ State :
Active — — 2017-07-26 – p.14/39
( ) ( ) — — 2017-07-26 – p.15/39
— — 2017-07-26 – p.16/39
(Docker) (chaincode) PBFT (Practical BFT) RocksDB CA PKI v1.0 DB
CA BFT : Byzantine Fault Tolerance ( ) CA : Certificate Authority ( ) PKI : Public Key Infrastructure ( ) — — 2017-07-26 – p.17/39
( ) ← CA — — 2017-07-26 – p.18/39
3-2. Sawtooth (Intel) https://github.com/hyperledger/sawtooth-core State : Active — — 2017-07-26
– p.19/39
( ) (permissioned) (permissionless) Proof of Elapsed Time (PoET) Proof
of Work ( ) (Intel ) / Transaction Families — — 2017-07-26 – p.20/39
(transaction families) (PoET ) PoET ( ) (transaction families) —
— 2017-07-26 – p.21/39
3-3. Iroha ( ) https://github.com/hyperledger/iroha State : Active — —
2017-07-26 – p.22/39
( ) DLT : C++ Sumeragi Whitepaper : https://github.com/hyperledger/iroha/blob/master/docs/iroha_whitepaper.md —
— 2017-07-26 – p.23/39
JVM (chaincode) Sumeragi (BFT) JVM : Java Virtual Machine (Java
) — — 2017-07-26 – p.24/39
Merkle Tree ( ) Digest = double SHA-256 value Existence
of a TX can be verified if a relevant subtree is provided — — 2017-07-26 – p.25/39
4. Corda (R3) Tangle (IOTA) — — 2017-07-26 – p.26/39
4-1. Corda (R3) R3 https://github.com/corda/corda — — 2017-07-26 – p.27/39
R3 R3CEV 77 (2017 2 ) 3 SBI , R3Net(
) Corda — — 2017-07-26 – p.28/39
Corda Corda : : — — 2017-07-26 – p.29/39
( ) + CAP ( DLT ) — — 2017-07-26
– p.30/39
CAP ( ) Consistency ( ) Availability ( ) Partition
tolerance ( ) ⇒ 3 C Eventual consistency ( ) . . . — — 2017-07-26 – p.31/39
JVM ( ) (Uniqueness Services) UTXO X.509 PKI ( )
UTXO : Unspent TX (transaction) Output ( ) X.509 : PKI — — 2017-07-26 – p.32/39
4-2. Tangle (IOTA) IoT IOTA https://iota.readme.io — — 2017-07-26 –
p.33/39
IoT TX TX (DAG) TX Tangle — — 2017-07-26 –
p.34/39
IoT (IOTA) DAG ( ) DAG — — 2017-07-26 –
p.35/39
5. DLT DLT — — 2017-07-26 – p.36/39
( ) (by ) (since 1984) ( ) ( )
( ) . . . ( ) ⇒ . . . — — 2017-07-26 – p.37/39
( ) ( ) ( ) ( ) ( )
( ) (by ) ⇒ DLT — — 2017-07-26 – p.38/39
— — 2017-07-26 – p.39/39