HyperLedger Today - Speaker Deck

HyperLedger Today

by Seiji Takahashi

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HYPER  LEDGER TODAY @__timakin__ / blockchain.tokyo#1

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ࣗݾ঺հ • Seiji Takahashi • Github: timakin / Twitter: @__timakin__ • Gunosy Inc. Business Development Team • Go / Swift • Just a little bit contributed to Go.

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https://www.slideshare.net/seijitakahashi92/concept-of- blockchain-decentralized-application

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ΞδΣϯμ • HyperLedgerͱ͸ʁ • HyperLedgerͷϓϩδΣΫτҰཡ • HyperLedgerͷ։ൃʹؔͯ͠

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HyperLedgerͱ͸ʁ

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HyperLedgerͱ͸ʁ • ۚ༥Λத৺ͱͨ͠൚ۀछͰͷϒϩοΫνΣʔϯ ٕज़ͷߴ౓ԽΛਐΊΔڞಉϓϩδΣΫτ • Supported by The Linux Foundation • ίϯιʔγΞϜܕͷϒϩοΫνΣʔϯ • IBMɺIntelɺJ.P.MorganɺMUFGɺNECɺΞΫ ηϯνϡΞɺ෋࢜௨ɺ೔ཱetc…େاۀ͕ϝϯ όʔͱͳ͍ͬͯΔ

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HyperLedgerͱ͸ʁ ref: http://gaiax-blockchain.com/hyperledger-project

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HyperLedgerͷߏ੒ཁૉ ref: https://docs.google.com/document/d/1Z4M_qwILLRehPbVRUsJ3OF8Iir-gqS-ZYe7W-LE9gnE/pub

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HyperLedger Projects Fabric PBFTʹΑΔߴ଎ͳ߹ҙܗ੒  খ਺ϊʔυͰՄೳͳӡ༻  ϝϯόʔγοϓ੍ʹΑΔԾ૝௨՟ͷෆࡏ  ։ൃස౓͸ߴ͘ɺ࣮ূ࣮ݧࡁΈ*ɻGoɻ  * http://www.jpx.co.jp/corporate/research-study/working-paper/tvdivq0000008q5y-att/ JPX_working_paper_No15.pdf 

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HyperLedger Fabric Network ref: https://www.ibm.com/developerworks/jp/cloud/library/j_cl-blockchain-basics-bluemix/

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PBFT (Practical Byzantine Fault Tolelance) ref: https://www.ibm.com/developerworks/jp/cloud/library/j_cl-blockchain-basics-bluemix/

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ChainCode • εϚʔτίϯτϥΫτɻGo͔JavaͰΠϯλʔ ϑΣʔεΛ࣮૷͢Ε͹ϒϩοΫνΣʔϯ্Ͱ࣮ߦ ՄೳͳϓϩάϥϜɻ

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ChainCode

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World State • ChainCode͔ΒR/WͰ͖ΔKVSɻJSONจࣈྻΛ ֨ೲͰ͖Δɻ • ϑΝΠϧΛอଘ͍ͨ͠৔߹͸όΠφϦจࣈྻʹ ม׵ͯ͠ɺChainCode্͔Βࢀর͢Δ͜ͱʹͳ Δɻ

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shim.ChaincodeStubInterface • chaincodeͰWorldStateɺLedgerɺೝূ৘ใͳ ͲʹΞΫηε͢ΔAPI • Init, Invokeͷ྆ํͰୈҰҾ਺ʹ౉ͬͯ͘Δɻ • Get/Put/Delete StateͰWorld StateʹΞΫηε • shim.Success, shim.ErrorͰres payload writer͕ ϥοϓ͞Ε͍ͯΔɻʢΤϥʔίʔυ͸200, 400, 500ͷΈʣ

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HyperLedger Projects Iroha ೔ຊͷιϥϛπגࣜձࣾ։ൃओಋͷϒϩοΫνΣʔϯɻ ஍Ҭ௨՟ɺֶ಺௨՟ͳͲʹ࣮༻͞ΕͯΔɻ  ϞόΠϧSDKɺσδλϧΞηοτൃߦʹॏ఺Λஔ͍ͯ ͍Δɻ Fabricͱ͸߹ҙܗ੒ΞϧΰϦζϜ͕एׯҧ͏ɻ  C++ɻ

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Sumeragi ref: https://github.com/hyperledger/iroha/blob/master/docs/iroha_whitepaper.md As 2f+1 signatures are needed to conﬁrm a transaction, under the normal case only 2f+1 peers are involved in transaction validation; the remaining peers only join the validation when faults are exhibited in peers.

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HyperLedger Projects Indy ϒϩοΫνΣʔϯ্ͰσδλϧIDΛ؅ཧ͢Δɻ Bitcoin΍Ethereumͱ͸ҟͳΓɺID؅ཧͷͨΊͷಠࣗ ͷ୆ாΛ࣋ͭɻ IDͷόϦσʔγϣϯ΋ɺHyperLedgerՃໍલʹ  σδλϧIDͰ͋ΔSovrin IDΛ؅׋͍ͯͨ͠ɺ  Sovrin FoundationͷόϦσʔλʔϊʔυ (Permissioned)্ͰߦΘΕΔɻ

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Indy Access Control IDͷࢀরࣗମ͸PublicʹͰ͖Δ͕ɺόϦσʔγϣϯ͸ೝՄΛड͚ͨ  όϦσʔλʔϊʔυ͚͕ͩͰ͖Δɻ

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RBFT (Redundunt Byzantine Fault Tolelance) ref: https://pakupaku.me/plaublin/rbft/5000a297.pdf

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HyperLedgerͷ։ൃʹ͍ͭͯ Development ϏοΫϦυοΩϦMakeﬁleͰdockerͷίϯςφϏϧυ͕Ӆṭ ͞ΕͯΔɻ  kubernetesʹҠߦ͠Α͏ͱ͍͏ٞ୊΋Issueʹ͸্͕ͬͯΔ Fablic, Iroha, Sawtooth, IndyͲΕ΋ίϛοτࣗମ͸׆ൃʹߦ ΘΕ͍ͯΔɻ

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HyperLedgerͷ։ൃʹؔͯ͠ ίϛϡχςΟ https://chat.hyperledger.org͔ϝʔϦϯάϦετͰ֤ϓϩ δΣΫτͷ࣭໰ɾਐḿ֬ೝ౳͕ߦΘΕ͍ͯΔɻ JIRAͰνέοτ੾ͬͯλεΫ؅ཧ͞Ε͓ͯΓɺਐḿঢ়گ͕ެ ։͞Ε͍ͯΔɻ https://jira.hyperledger.org/secure/Dashboard.jspa? selectPageId=10104 https://wiki.hyperledger.org/

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HyperLedgerͷ։ൃʹؔͯ͠ https://wiki.hyperledger.org/

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HyperLedgerͷ։ൃʹ͍ͭͯ Composer Development framework/tools for building Blockchain business networks

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HyperLedgerͷ։ൃʹ͍ͭͯ Composer Web UIͰϒϩοΫνΣʔϯ(Fabric)্ʹ৐ͤΔΞϓϦ͕࡞ΕΔɻ ҎԼ4ͭͷߏ੒ཁૉͰ੒Γཱͭɻ Model: τϥϯβΫγϣϯͰѻ͏ΤϯςΟςΟ Access Control: Read/Writeݖݶͷઃఆ Script: νΣʔϯ্Ͱ࣮ߦ͞ΕΔεΫϦϓτɻJSɻ Query: εΫϦϓτ಺෦Ͱݺ΂Δ Modelఆٛʹج͍ͮͯREST APIΛߏஙͨ͠ΓϢχοτςετ΋Մೳ

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·ͱΊ • ίϯιʔγΞϜܕϒϩοΫνΣʔϯ࣮૷ͷ HyperLedger͸֤छϓϩδΣΫτ͕׆ൃʹ  ։ൃ͞Εͯ·͢ɻ • ύϑΥʔϚϯε౳࣮ূ࣮ݧ͕͞Ε͓ͯΓɺ  ۚ༥෼໺ʹ͓͍ͯ͸࣮༻ੑΛײ͡Δɻ • Fabric + Composerͷ։ൃ؀ڥ͕͙͢৮ΕΔͷ ͰɺؾʹͳΔਓ͸ࢼͯ͠Έ͍ͯͩ͘͞ɻ