hakone_hackthon

Transcript

1. Basics of Block Chain
2. 2 ͜ͷࢿྉʹ͍ͭͯ ڞ༗ࢿྉ https://goo.gl/ZvPo1h
3. @r_etx -*/&
   $MPWB Taiki Kawa ౦ژ޻ۀେֶ෺ཧֶՊଔۀɾम࢜2೥ Ӊ஦ͱྔࢠ৘ใͷݚڀΛ͍ͯͨ͠ɻ LINE ClovaͰ6ϲ݄ؒPM ݱࡏෳ਺ͷBlock Chain ελʔτΞοϓͰBlockchainͷ։ൃ ϝ σΟΞࣄۀͰ׆ಈ CONSENSYS MEDIA Crypto AGE
4. Idea of Block Chain
5. BlockchainΛ࢖ͬͨCryptoCurrency΍Project͸ɺ BitcoinɺEthereumɺNEOɺMonaͳͲ৭ʑ͋Γ·͢ɻ ͜͜Ͱ͸ͦͷྲྀߦΓΛ࡞ͬͨBlockchain=Bitcoinʹؔ ͢Δ࿩Λ͠·͢ɻ ·͓͖͑
6. Blockchain΁ͷظ଴ “The technology most likely to change the next decade of business is not the social web, big data, the cloud, robotics, or even artificial intelligence. It’s the blockchain, the technology behind digital currencies like Bitcoin.” )BSWBSE
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   5BQTDPU
7. Blockchain΁ͷظ଴ ‘’Bitcoin at its most fundamental level is a breakthrough in computer science —one that builds on 20 years of research into cryptographic currency’’ •— Marc Andreessen
8. 1975೥͸ɺύʔιφϧίϯϐϡλʔɺ •— Marc Andreessen Blockchain΁ͷظ଴
9. 1975೥͸ɺύʔιφϧίϯϐϡλʔɺ 1993೥͸ɺΠϯλʔωοτɺ •— Marc Andreessen Blockchain΁ͷظ଴
10. 1975೥͸ɺύʔιφϧίϯϐϡλʔɺ 1993೥͸ɺΠϯλʔωοτɺ 2014೥͸ɺϏοτίΠϯͩͱࢲ͸৴͍ͯ͡Δɻ •— Marc Andreessen Blockchain΁ͷظ଴
11. Bitcoin͕ղ͖͔ͨͬͨ໰୊ A peer to peer version of electronic cash would allow online payments to be sent directly from one party to another without going through a financial institution. ࣗ෼ͷ͓ۚΛ୭ʹ΋ࢭΊΒΕΔ͜ͱແࣗ͘෼ͷ޷͖ͳλΠϛϯάͰ ૹۚ͢Δʹ͸Ͳ͏͢Ε͹Α͍͔ʁ
12. ශ͚ͩ͠͞Ͱͳ͘ɺޱ࠲։ઃʹ൐͏අ༻ɺखଓ͖ɺۜߦ·Ͱͷڑ ཭ͳͲʹΑͬͯɺੈքͷශࠔ૚ͷ4ਓʹ3ਓ͕ۜߦޱ࠲Λ͍࣋ͬͯ ͳ͍ɻ ࠃՈ΍ۜߦͳͲͷɺطಘݖӹͷհೖʹΑΓෆ౰ʹۜߦޱ࠲͕ౚ݁ ͤ͞ΒΕͨΓɺࣗ෼ͷ͍࣋ͬͯΔࢿ࢈ΛࠃՈͷ໊ͷԼʹୣΘΕΔ ͜ͱ͕ى͖Δɻ Bitcoin͕ղ͖͔ͨͬͨ໰୊
13. ශ͚ͩ͠͞Ͱͳ͘ɺޱ࠲։ઃʹ൐͏අ༻ɺखଓ͖ɺۜߦ·Ͱͷڑ ཭ͳͲʹΑͬͯɺੈքͷශࠔ૚ͷ4ਓʹ3ਓ͕ۜߦޱ࠲Λ͍࣋ͬͯ ͳ͍ɻ ࠃՈ΍ۜߦͳͲͷɺطಘݖӹͷհೖʹΑΓෆ౰ʹۜߦޱ࠲͕ౚ݁ ͤ͞ΒΕͨΓɺࣗ෼ͷ͍࣋ͬͯΔࢿ࢈ΛࠃՈͷ໊ͷԼʹୣΘΕΔ ͜ͱ͕ى͖Δɻ Bitcoin͕ղ͖͔ͨͬͨ໰୊ BitcoinͷΞΧ΢ϯτ͸୭Ͱ΋ҰॠͰ࡞ΕΔ BitcoinͷΞΧ΢ϯτ͸୭ʹ΋ࢭΊΔ͜ͱ͕Ͱ͖ͳ͍ɻ
14. ωύʔϧ஍਒ͷ࣌ͷࣸਅ ban.cr/aiddelivery
15. BitcoinͷՁ֨͸ͳ্͕ͥΔͷ͔?
16. bitcoin͸ҙਤతʹΠϯϑϨʹͳΒͳ͍Α͏ʹઃܭ͞Ε͍ͯΔɻ →௨՟͕঎඼ʹର͠ऑ͘ͳΒͳ͍Α͏ʹઃܭ͍ͯ͠Δɻ • Bitcoinͷ্ݶ͸20,999,999ສຕɻҰൠతʹ͸2100ສຕɻ • 2140೥ʹ࠾۷ऴྃɻ • 4೥ʹ1౓൒ݮظ͕͋Δɻ
17. What is a block chain
18. Blockchain is a public distributed ledger, in which all who choose to participate in it have autonomy to access it. Simply put, a blockchain is like spreadsheet anyone can access. Every participate has a copy of the spreadsheet and its responsible for keeping it up to date What is a block chain
19. ୭Ͱ΋ࢀՃͰ͖ ୯Ұͷঢ়ଶΛҡ࣋͢Δ ෼ࢄಉظ͞Εͨෳ੡σʔλϕʔε Permissionless Atomic State Machine Replication What is a block chain
20. ৘ใηΩϡϦςΟʔͷࡾେཁ݅(CIA) 1,ػີੑ 2,׬શੑ 3,Մ༻ੑ confidentiality integrity Availability ਖ਼౰ͳݖརΛ͍࣋ͬͯͳ͍ਓ Ҏ֎͕ΞΫηεͰ͖ͳ͍ ਖ਼౰ͳݖརΛ͍࣋ͬͯͳ͍ ਓҎ֎͕มߋͰ͖ͳ͍(վ᜵͞Εͳ͍) ඞཁͳ࣌ʹΞΫηεͰ͖Δ Blockchain͸͍ͭͰ΋࢖͑ͯվ᜵ෆՄೳੑ͕ߴ͍͕openͰ͋Δɻ
21. ࢀՃऀʹΑΔChainͷ෼ྨ(Permission less) Public chain Ұൠͷਓ(ෆಛఆଟ਺)
22. ࢀՃऀʹΑΔChainͷ෼ྨ(Permissioned) Consortium chain اۀ+ύʔτφʔ
23. ࢀՃऀʹΑΔChainͷ෼ྨ(Permissioned) Private chain 1ͭͷاۀͷΈ
24. 24 Public Consortium Private ϊʔυ ෼ࢄ͢Δ ෼ࢄ͠ͳ͍ ෼ࢄ͠ͳ͍ ϒϩοΫνΣʔϯӾཡ Φʔϓϯ ੍ݶՄೳ ੍ݶՄೳ ϒϩοΫੜ੒ PoW΍PoSͳͲͷ೉қ ౓ͷߴ͍࢓૊Έ͕ඞཁ ೚ҙʢϒϩοΫੜ੒ओମ Λݶఆͤ͞Δ৔߹͕ଟ ͍ʣ ೚ҙ ؅ཧऀ ඞཁͳ͍ ඞཁ ඞཁ Ϣʔεέʔε Bitcoin, EthereumͳͲ TendermintͳͲ اۀ಺σʔλ؅ཧͳͲ HyperledgerͳͲ
25. 25 Public Consortium Private ϊʔυ ෼ࢄ͢Δ ෼ࢄ͠ͳ͍ ෼ࢄ͠ͳ͍ ϒϩοΫνΣʔϯӾཡ Φʔϓϯ ੍ݶՄೳ ੍ݶՄೳ ϒϩοΫੜ੒ PoW΍PoSͳͲͷ೉қ ౓ͷߴ͍࢓૊Έ͕ඞཁ ೚ҙʢϒϩοΫੜ੒ओମ Λݶఆͤ͞Δ৔߹͕ଟ ͍ʣ ೚ҙ ؅ཧऀ ඞཁͳ͍ ඞཁ ඞཁ Ϣʔεέʔε Bitcoin, EthereumͳͲ TendermintͳͲ اۀ಺σʔλ؅ཧͳͲ HyperledgerͳͲ ؅ཧऀ͕͍Δ৔߹ɺͦͷ؅ཧऀʹΑͬͯBlockchain಺ͷσʔλΛ؅ཧ͢Δ͜ͱ͕Ͱ͖ͯ͠·͏ɻ
26. Architecture of Block Chain
27. 27 https://magazine.ginco.io/post/kisochishiki_blockchain_ecosystem/
28. 28 https://magazine.ginco.io/post/kisochishiki_blockchain_ecosystem/
29. Important Component of Blockchain Consensus algorithm P2P Network Hash function Digital signature Smart Contract
30. Transaction
31. What is transaction ૹۚॲཧɺ͓ΑͼBlockchainʹͲͷΑ͏ͳσʔλΛॻ͖ࠐΉ͔ ͕ॻ͔Εͨσʔλͷ͜ͱΛτϥϯβΫγϣϯͱݺͿɻ "sender" : “b169f2NB8fbAjk3aD7VkhdV18d3afb", "recipient" : "3wvNiUkXJAJ85e4yXJxJVWtsKqWDsDFK4", "amount" : 10, "digital signature" : “vnajovbnjb242dv64waab79f67c” TX
32. Blockchain͸State ͷࢹ఺͔ΒݟΔͱɺTransactionʹΑͬͯState͕ߋ৽͞Εɺ ͦΕ͕ChainͷΑ͏ʹܨ͕Δɻ World State σ m World State σ m+1 Transactions World State σ m+1 Transactions What is transaction
33. Address & Secret key
34. 34 ൿີ伴ͱެ։伴 ൿີ伴͸ϥϯμϜͳ਺஋ʹΑͬͯߏ੒͞ΕΔɻެ։伴͸ൿີ伴Λପԁۂઢ ൿີ伴͕όϨΔͱࢿ࢈Λ؆୯ʹ౪ΊΔঢ়ଶʹͳΔɻൿີ伴ͷ෮ݩ΋ෆՄೳɻ Ұൠతʹ͸ɺऔҾॴ͕ൿີ伴ͷ؅ཧΛ͍ͯ͠ΔɻࠓճͷίΠϯνΣοΫͷҰ݅͸ ίΠϯνΣοΫ͕ൿີ伴Λϗοτ΢ΥϨοτͰ؅ཧ͓ͯ͠ΓϋοΩϯά͞Εͨɻ ൿີ伴ͷྫɿ Source : mastering bitcoin
35. 35 ൿີ伴ͱެ։伴 Source : mastering bitcoin ൿີ伴͸ɺ16ਐ๏ͷ64ܻͱͳ͍ͬͯΔɻ16ͷ64৐ɻ 1664 ≈ 1077 Ӊ஦ʹଘࡏ͢Δݪࢠͷ਺ͱಉ͡ͰɺӉ஦ͷத͔ΒಛఆͷݪࢠΛݟ͚ͭΔ ͘Β͍೉͍͠ɻ
36. 36 ECDSAʢElliptic Curve Digital Signature Algorithmʣ Source : mastering bitcoin ପԁۂઢ Txʹඞཁͳిࢠॺ໊͸ɺൿີ伴Λପԁۂઢ্ͷ εΧϥʔഒࢉΛ༻͍ͯ࡞੒͞ΕΔɻ ެ։伴͔Βൿີ伴ͷ࡞੒͸ݶΓͳ͘೉͍͠ɻ G_1 G_2 y2 = x3 + 7
37. 37 ECDSAʢElliptic Curve Digital Signature Algorithmʣ ପԁۂઢ G_1 G_2 G_3 Txʹඞཁͳిࢠॺ໊͸ɺൿີ伴Λପԁۂઢ্ͷ εΧϥʔഒࢉΛ༻͍ͯ࡞੒͞ΕΔɻ ެ։伴͔Βൿີ伴ͷ࡞੒͸ݶΓͳ͘೉͍͠ɻ G_1 + G_2 = G_3ͰՃ๏Λఆٛ͢Δɻ ͜ͷͱ͖ɺG_1, G_2͕༗ཧ਺Ͱ͋Ε͹G_3΋༗ཧ਺ Tx͝ͱʹr*Gͷ஋ΛٻΊΔɺ͜Ε͕signatureʹͳΔ y2 = x3 + 7 https://zoom-blc.com/what-is-ecdsa
38. ͜ͷΑ͏ʹͯ͠Transaction͕ੜ੒͞ΕΔɻ "sender" : “b169f2NB8fbAjk3aD7VkhdV18d3afb", "recipient" : "3wvNiUkXJAJ85e4yXJxJVWtsKqWDsDFK4", "amount" : 10, "digital signature" : “vnajovbnjb242dv64waab79f67c” TX
39. Contents of Block
40. ͜ͷΑ͏ʹͯ͠Transaction͕ੜ੒͞ΕΔɻ "sender" : “b169f2NB8fbAjk3aD7VkhdV18d3afb", "recipient" : "3wvNiUkXJAJ85e4yXJxJVWtsKqWDsDFK4", "amount" : 10, "digital signature" : “vnajovbnjb242dv64waab79f67c” TX
41. 41 ϒϩοΫͷߏ଄ TX time stump TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX
42. 42 ϒϩοΫͷߏ଄ TX this block’s hash time stump TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX
43. 43 ϒϩοΫͷߏ଄ Merkle treeͷrootͱ͸ʁ τϥϯβΫγϣϯͱͱͳΓͷτϥϯβΫγϣϯΛ͋Θͤͨ΋ͷΛϋογϡԽ͠·͢ɻ TxaͱTXbΛϋογϡԽ͠ɺHaͱHbΛ࡞ΓɺHaͱHbΛϋογϡԽ͢Δ͜ͱʹΑͬͯHabΛ࡞Γ·͢ɻ Ha͕վ͟Μ͞ΕΔͱ͜ͷ৔߹ɺMerkle rootͷ஋͕มΘΓ·͢ɻ https://bitcoinbook.info/translations-of-mastering-bitcoin/
44. 44 ϒϩοΫͷߏ଄ previous block’s hash TX this block’s hash time stump TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX
45. 45 ϒϩοΫͷߏ଄ previous block’s hash nonce TX this block’s hash time stump difficulty TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX
46. 46 Former block’s hash value Former block’s hash value Former block’s hash value Nonce Nonce Nonce Transaction Transaction Transaction Transaction Transaction Transaction Transaction Transaction Transaction Transaction Transaction Transaction • A block is including transactions in a certain period of time. • A block is including the former block’s hash value. 
 Therefore, it looks like a chain structure. • The hash is recomputed for each value until a hash containing the 
 required number of zero bits is found. (set by “the difficulty”) The Structure of Blocks
47. Consensus algorithm
48. BitcoinͰ͸ɺPoW(proof of work)ͱݺ͹ΕΔ ߹ҙܗ੒Λߦͳ͍ͬͯΔɻ Ұ൪͸΍͘σʔλͷݕূΛऴ͑target nonceΛݟ͚ͭͨ ϚΠφʔͷΈ͕ϒϩοΫΛੜ੒Ͱ͖ɺใु͕΋Β͑Δɻ
49. Nonce͸ϚΠφʔ͕ࣗ༝ʹܾΊΒΕΔՄมͳ஋ɺ ৭ʑͳ஋Λ୅ೖͯ͠ଞͷϚΠφʔΑΓ΋ઌʹϒϩοΫΛ ੜ੒͢Δ͜ͱ͕Ͱ͖ͨΒใु͕΋Β͑Δɻ Nonce : A Other data : fnb435yBHJV Nonce : B Other data : fnb435yBHJV Nonce : C Other data : fnb435yBHJV Hash ☓ 21333508fdw9cujsighwehɾɾɾ Hash ☓ 00avfea32452jkvfbjak463b4ɾɾɾ Hash ◦ 000000dw9cujsighwehɾɾɾ
50. Nonce : C Other data : fnb435yBHJV Hash 000000dw9cujsighwehɾɾɾ Targetͷnonce͸ϋογϡ஋Λܭࢉͨ࣌͠ʹɺ ઌ಄ʹ0͕ ྫ͑͹5ݸฒΜͩΒ੒ޭͱఆٛ͢Δɻ=> Blockੜ੒ͱใु Hash(blockchain, ⋯, nonce) ≤ target(difficulty)
51. 51 PoW (Workflow Systemᶃ) Participants : A, B, C, D, E, F, G Miners : α, β, γ, δ, ε A B C D E F α β γ ε δ Blockchain
52. 52 PoW (Workflow Systemᶄ) A send 10BTC to C, C send 5BTC to F, E send 8BTC to D A→C, C→F, E→ D A B C D E F α β γ ε δ
53. 53 PoW (Workflow Systemᶅ) A B C D E F α β γ ε δ The transactions are broadcasted to participants and miners at the same time. Transactions like A→C, C→F, E→D are also the same.
54. 54 PoW (Workflow Systemᶆ) A B C D E F α β γ ε δ The miners which received transactions confirm signatures and start to find Nance.
55. 55 PoW (Workflow Systemᶇ) A B C D E F α β γ ε δ The one who finds Nonce will make a new block and broadcast it to all participants and miners.
56. 56 PoW (Workflow Systemᶈ) A B C D E F α β γ ε δ Miners which received the block confirm it and add it to own blocks.
57. Consensus algorithm(ଞʹ΋)
58. Proof of Stake Other data : fnb435yBHJV Hash 000000dw9cujsighwehɾɾɾ ྫ͑͹ɺStakeʹԠͯ͡೉қ౓͕ҟͳΓɺΑΓଟ͘Stakeͯ͠ਓ΄Ͳ ؆୯ʹBlockΛੜ੒͢Δ͜ͱ͕Ͱ͖Δɻ Hash(blockchain, ⋯) ≤ target(difficulty, stake, time)
59. PBFT(Practical Byzantine Fault Tolerance) PBFT͸ɺίϯιʔγΞϜνΣʔϯͰҰ෦ͷίϯϐϡʔλʔ͕ো֐Ͱఀ ࢭͨ͠Γɺෆਖ਼Λಇ͜͏ͱͨ͠Γͯ͠΋ɺ߹ҙܗ੒͕Ͱ͖ΔΑ͏ͳ࢓૊ Έɻ(શମͷϊʔυͷ਺͕3n+1ͷͱ͖2n+1ݸͷϊʔυ͕ਖ਼ৗʹىಈͯ͠ ͍͍ͯΕ͹ɺ߹ҙܗ੒͕Ͱ͖Δɻ) The Byzantine Generals Problem L LAMPORT ஶ - 1982
60. PBFT(Practical Byzantine Fault Tolerance) App No validator Leader Validator
61. PBFT(Practical Byzantine Fault Tolerance) PBFT͸ɺϏβϯνϯނোʹ଱ੑ͕͋Δɻ Ϗβϯνϯނোͱ͸ɺނোͯ͠΋ঘɺϓϩηε͸೚ҙͷಈ࡞Λ࣮ߦͯ͠͠· ͏Α͏ͳঢ়ଶͷ͜ͱɻ ͜ͷΑ͏ͳঢ়ଶͰ΋߹ҙܗ੒͕Ͱ͖Δ͜ͱ͕ಛ௃ɻ
62. PBFT(Practical Byzantine Fault Tolerance) ߹ҙ͕ϏβϯνϯͳৼΔ෣͍Λ͢ΔϓϩηεʹΑܾͬͯ·ͬͯ͠·Θͳ͍ɻ N − F > N − F 2 + F T > N − F 2 + F Ϗβϯνϯʹͳ͍ͬͯͳ͍ϊʔυ͚ͩͰ΋߹ҙܗ੒͕Ͱ͖Δɻ N − F ≥ T ͕ͨͬͯ͠ɺ N:શମͷϊʔυ਺ɹF:Ϗβϯνϯͳϊʔυ T:ਖ਼ৗʹίϯηϯαεΛͱΔͷʹඞཁͳϊʔυ
63. PBFT(Practical Byzantine Fault Tolerance) N − F > N − F 2 + F Αͬͯ F < N 3
64. PBFT(Practical Byzantine Fault Tolerance) ͕ͨͬͯ͠ɺ F < N 3 ͜ΕΑΓɺϏβϯνϯͳϊʔυ͕શମͷ1/3ҎԼͰ͋Ε͹ɺਖ਼ৗʹ ߹ҙܗ੒͕Ͱ͖Δɻ
65. Smart Contract
66. σδλϧʹදݱ͞ΕΔࢿ࢈Λ༧ΊఆΊΒΕͨϧʔϧʹ ैͬͯࣗಈతʹҠసͤ͞Δ࢓૊Έ ࣄલʹBlockchainʹͰϓϥΠ͢Δ͜ͱͰɺ୭͔Β΋֬ೝͰ ͖(ಁ໌ੑ͕͋Δ)ɺ͋Β͔͡Ίઃఆ͓͍ͯͨ͜͠ͱ͕ى͖ ͨΒඞͣࢪߦ͞ΕΔɻ Smart Contract https://www.bibitpost.com/archives/775
68. https://www.mermirai.com/entry/0409_blockchain ࢀߟ: ϒϩοΫνΣʔϯΛ࢖͏ͱྑ͍΋ͷ
69. 69 ϒϩοΫνΣʔϯͬͯඞཁͳΜ͚ͩͬʁ σʔλϕʔε͸ඞཁ͔ʁ ϒϩοΫ νΣʔ ϯ͡Ό ͳͯ͘ྑ͘ ͳ͍ʁ Y N ෳ਺ͷεςʔΫϗϧμʔ ͕ؔΘΔ͔ʁ Y ͦΕΒͷεςʔΫϗϧμʔ͸৴པ Ͱ͖Δ͔ʁ Y ͦΕΒΛ౷߹͢Δ͜ͱ͸Ͱ͖Δ͔ʁ Y N N N ୈࡾऀΛ৴པͰ͖Δ͔ʁ Y N ϒϩοΫνΣʔϯΛ ಋೖ͢Δίετͱޮ ༻͸ׂʹ͋͏͔ʁ N Y ϒϩοΫ νΣʔϯ࢖ ͓͏͔ʂ ࣗ෼͕ϒϩοΫνΣʔ ϯ্ͷه࿥Λॻ͍ͨ ΓಡΜͩΓΛ͢Δඞ ཁੑ͸͋Δ͔ʁ ࢀߟɿDistributed.comɹBlockcahin Capital LLC Y N ίϯηϯαε͸ෳ਺ ͷϓϨʔϠʹΑͬͯ ܾఆ͞ΕΔʁ Y N ޮ཰ΑΓ΋ɺվ͟Μ ଱ੑ΍ΞΫηαϏϦ ςΟʔͷํ͕େࣄʁ N ίϯιʔγ ΞϜ ϒϩοΫ νΣʔϯʂ ϓϥΠϕʔ τ ϒϩοΫ νΣʔϯʂ ύϒϦοΫ ϒϩοΫ νΣʔϯʂ Y
70. Hyperledger
71. Hyperledgerͱ͸ اۀؒͷσʔλΛ؅ཧ͢ΔBlockchain LinuxOSͷීٴΛαϙʔτ͢ΔඇӦརͷڞಉࣄۀମͰ͋ΔLinux Foundation ͕த৺ͱͳΓɺΦʔϓϯιʔεͷཧ೦͔ΒੈքதͷITاۀ͕ڠྗͯ͠ɺϒϩ οΫνΣʔϯٕज़ͷཱ֬Λ໨ࢦ͍ͯ͠Δ ҉߸௨՟͕ଘࡏ͠ͳ͍ ݫ֨ͳPermissionܕ PBFTγεςϜ
72. ࢀՃऀʹΑΔChainͷ෼ྨ(Permissioned) Consortium chain اۀ+ύʔτφʔ
73. Hyperledgerͱ͸ Hperledgerʹ͸༷ʑͳछྨ͕͋Δɻ߹ҙܗ੒ͷ࢓ํ΍։ൃ ͞Ε͍ͯΔݴޠ͕͜ͱͳΔɻ Fabric IBM Go Swatooth Lake Intel Python ͍Ζ͸ ιϥϛπ C++ Corda R3 Kotlin
74. Hyperledgerͱ͸ Hperledgerʹ͸༷ʑͳछྨ͕͋Δɻ߹ҙܗ੒ͷ࢓ํ΍։ൃ ͞Ε͍ͯΔݴޠ͕͜ͱͳΔɻ Fabric IBM Go Swatooth Lake Intel Python ͍Ζ͸ ιϥϛπ C++ Corda R3 Kotlin
75. Hyperledgerͱ͸ ҰൠతͳwebΞϓϦέʔγϣϯ ΞϓϦέʔγϣϯ؀ڥ ϢʔβʔͷΞΫηε App σʔλϕʔε σʔλͷ֨ೲઌ σʔλͷߋ৽ݕࡧ API
76. Hyperledger Fabricͱ͸ BlockchainΞϓϦέʔγϣϯ ΞϓϦέʔγϣϯ؀ڥ ϢʔβʔͷΞΫηε App Blockchain chaincode σʔλͷ֨ೲઌ BC΁ͷॻ͖ࠐΈ Chain code
77. Hyperledger Fabricͱ͸ ΞϓϦέʔγϣϯ؀ڥ ϢʔβʔͷΞΫηε App Blockchain chaincode σʔλͷ֨ೲઌ BC΁ͷॻ͖ࠐΈ Chain code ΞϓϦέʔγϣϯͷॲཧʹඞཁͳ ChainCode Λ͋Β ͔͡Ί༻ҙͯ͠ɺ σʔλͷ֨ೲઌ ͦͷ ChainCode ܦ༝ͰಡΈॻ͖ ߋ৽ݕࡧɾɾɾ BlockchainΞϓϦέʔγϣϯ
78. Hyperledger Fabricͱ͸ ΞϓϦέʔγϣϯ؀ڥ ϢʔβʔͷΞΫηε App Blockchain chaincode σʔλͷ֨ೲઌ BC΁ͷॻ͖ࠐΈ Chain code Blockchain্ʹσϓϩΠ͢Δ Code( ChainCode ) ͸GoͰ࣮૷͢Δඞཁ͕͋Γɺந৅తɻ BlockchainΞϓϦέʔγϣϯ
79. Hyperledger Fabricͱ͸ ΞϓϦέʔγϣϯ App Blockchain chaincode BlockchainΞϓϦέʔγϣϯ API(Composer)Λ༻͍Δ͜ͱͰGoҎ֎ͷ৭ʑͳݴޠͰ։ൃ͕Ͱ͖Δ APIαʔόʔͱ͚ͩ௨৴͕Ͱ͖ΔChaincodeΛ༻ҙ͢Ε͹͍͍ɻ Hyoperledger Composer API
81. ࣮ࡍͷυΩϡϝϯτ͸ҎԼΑΓಡΉ͜ͱ͕Ͱ͖·͢!! ࣮ࡍʹಡΜͰࢼͯ͠ΈΑ͏ https://hyperledger-fabric.readthedocs.io/en/release-1.2/ https://composer-playground.mybluemix.net https://www.ibm.com/developerworks/jp/cloud/library/cl- hyperledger-fabric-basic-1/index.html https://www.ibm.com/developerworks/jp/cloud/library/cl- hyperledger-fabric-basic-2/index.html Hyperledger Fabricͱ͸