サービスデザインプロジェクトB 第6回「ウェブサービスデザイン 2」 / Web Service Design 2

2020年11月16日、慶應義塾大学大学院メディアデザイン研究科の「サービスデザインプロジェクトB (2020 秋)」第6回にて使用したスライドです。

紹介している API/アプリを更新したので、2020年11月20日にアップデートしました。

Transcript

1. B 2020 6 2 ( ) B 2020 — 6 2 — 2020-11-16 – p.1/38
2. https://speakerdeck.com/ks91 Discord Discord ( / / ) Zoom URL ( ) B 2020 — 6 2 — 2020-11-16 – p.2/38
3. ( ) 1 10 12 • 2 10 19 • 3 10 26 • 4 11 2 • 5 11 9 1 • 6 11 16 2 • 7 11 30 8 12 7 3 ( 2 ) ( ) ↓ B 2020 — 6 2 — 2020-11-16 – p.3/38
4. BBc-1 – Certify Web API & B 2020 — 6 2 — 2020-11-16 – p.4/38
5. B 2020 — 6 2 — 2020-11-16 – p.5/38
6. 3. API (1) ( ) (2) Web API 2020 11 14 ( ) 23:59 JST B 2020 — 6 2 — 2020-11-16 – p.6/38
7. . . . . . . 12 7 ( 13:00 ) ( ) API UI AP (Application Programming) vs. U (User) I (Interface) ( ) CRUD POST, GET, PUT, DELETE ( CRUD ) B 2020 — 6 2 — 2020-11-16 – p.7/38
8. T ( ) ⇒ ( ) API B 2020 — 6 2 — 2020-11-16 – p.8/38
9. T API [ ] ( API https://www.nttdocomo.co.jp/biz/service/kyc/function/) ⇒ API API API B 2020 — 6 2 — 2020-11-16 – p.9/38
10. W W stack stack Stack ⇒ stack stack API B 2020 — 6 2 — 2020-11-16 – p.10/38
11. N ⇒ Bitcoin Ethereum ( ) 3 Ethereum API B 2020 — 6 2 — 2020-11-16 – p.11/38
12. ( Ethereum ) จॻ  จॻ  จॻ  จॻ  จॻ O ཌ೔ͷ׭ใ μΠδΣετ μΠδΣετ μΠδΣετ μΠδΣετ μΠδΣετ μΠδΣετ μΠδΣετ ح਺ͷ৔߹͸ ෳ੡͢Δ ˞
    μΠδΣετ͸ݩͷ ɹ
    σʔλ͕
     ϏοτͰ΋ ɹ
    ҟͳΔͱશ͘ҟͳΔ஋ ɹ
    ͱͳΓɺ·ͨɺμΠδΣ ɹ
    ετ͔ΒݩͷσʔλΛ ɹ
    ਪଌ͢Δ͜ͱ͸Ͱ͖ͳ͍ɻ ɾจॻ 
    Λ։ࣔ͞Εͨ " ࢯ͸ɺಉ࣌ʹϒϧʔͰࣔ͞ΕΔμΠδΣετͱͦΕ͕ࠨӈͷͲͪΒʹҐஔ͢Δ͔Λड͚औΔɻ ɾ" ࢯ͸จॻ  ͷμΠδΣετ͔Β࢝Ίͯɺ࿈݁͢΂͖Ұ࿈ͷμΠδΣετΛ஌Δ͜ͱʹͳΔͷͰɺϚʔΫϧϧʔτʹࢸΔ·Ͱͷ ɹܭࢉΛ࠶ݱͰ͖ɺಘΒΕͨϚʔΫϧϧʔτ͕จॻͷ࡞੒೔ͷཌ೔ͷ׭ใʹهࡌ͞Ε͍ͯΔ஋ͱҰக͢Δ͜ͱΛ֬ೝͰ͖Δɻ هࡌ͢Δ ੥ٻʹج͖ͮ ։ࣔ͞Ε͏Δ ৘ใ ެ։͞ΕΔ৘ใ ϚʔΫϧϧʔτ Ϛ ồ Ϋ ϧ ໦
    ߦ ੓ ͕ อ ؅ ͠ ෦ ෼ త ʹ ։ ࣔ ͢ Δ ʜʜ ʜʜ ʜʜ ʜʜ ʜʜ μΠδΣετ μΠδΣετ μΠδΣετ μΠδΣετ μΠδΣετ μΠδΣετ B 2020 — 6 2 — 2020-11-16 – p.12/38
13. BBc-1 – Certify Web API & ( ) 2020-11-20 ledger_subsystem 0.15 git pull git clone setup.py pip install (0.15 ) : Ethereum https://speakerdeck.com/beyondblockchain/bbc-1-hands-on-ledger-subsystem-with-ethereum B 2020 — 6 2 — 2020-11-16 – p.13/38
14. Python3 bbc1 : https://speakerdeck.com/beyondblockchain/bbc-1-hands-on-installation-and-file-content-proof : https://speakerdeck.com/beyondblockchain/bbc-1-hands-on-ledger-subsystem-with-ethereum bbc1-lib-std ( ) ( OK) bbc1-lib-registry ( ) ( OK) B 2020 — 6 2 — 2020-11-16 – p.14/38
15. GitHub git clone $ git clone -b develop https://github.com/beyond-blockchain/bbc1-lib-std.git $ cd bbc1-lib-std tar pip (Python ) $ python setup.py sdist $ pip install dist/bbc1-lib-std-0.19.tar.gz dist tar pip install B 2020 — 6 2 — 2020-11-16 – p.15/38
16. ( OK) ( SQLite3 ) ( ) ( ) ( ) ( ) B 2020 — 6 2 — 2020-11-16 – p.16/38
17. GitHub git clone ( ) $ git clone -b develop https://github.com/beyond-blockchain/bbc1-lib-registry.git $ cd bbc1-lib-registry tar pip (Python ) $ python setup.py sdist $ pip install dist/bbc1-lib-registry-0.8.tar.gz dist tar pip install bbc_core.py B 2020 — 6 2 — 2020-11-16 – p.17/38
18. ( OK) (registry) XML XML , etc. B 2020 — 6 2 — 2020-11-16 – p.18/38
19. Certify Web API & Certify Web B 2020 — 6 2 — 2020-11-16 – p.19/38
20. Certify Web Certify Web bbc1-lib-registry API & bbc-lib-std API JSON ( ) ( ) (= ) Certify Web API ( ) B 2020 — 6 2 — 2020-11-16 – p.20/38
21. Certify Web GitHub git clone $ git clone https://github.com/beyond-blockchain/examples.git $ cd examples/certify-web git pull git clone GitHub API & index.py BBc-1 $ python index.py (API ) http://localhost:5000 B 2020 — 6 2 — 2020-11-16 – p.21/38
22. Certify Web / (1) Certify Web JSON { "id": "AR-1838B", "title": "I Am the Walrus", "artist": "The Beatles", "writer": "Lennon-McCartney", "year": "1967" } “proof” Merkle Proof ( ) B 2020 — 6 2 — 2020-11-16 – p.22/38
23. Certify Web / (2) JSON “id”: (bbc1-lib-registry ) “digest”: SHA-256 SHA-256 /api/digest API “_docs”: ( ; ) “proof”: ( ) Merkle Proof “privkey”: ( ) ( ) - /api/keypair API ( ) “pubkey”: ( ) “sig”: (pubkey ) “algo”: algo, sig, pubkey /api/sign API ( ) B 2020 — 6 2 — 2020-11-16 – p.23/38
24. Certify Web / (3) “proof” "proof": { "spec": { "subsystem": "ethereum", "network": "ropsten", "contract": "BBcAnchor", "contract_address": "0x31e12b7b5214248184DaBa8071605CE3E92AcDa3", "block": 9098749 }, "subtree": [ { "position": "left", "digest": "6578c8c585be7aa25e5619cedfbc02820c223d667a2561b92c9de9656fded793" }, : ] } B 2020 — 6 2 — 2020-11-16 – p.24/38
25. (1) ( ) (bbc_core.py ) $ curl -X POST http://localhost:5000/api/setup domain id (“certify_web_domain” ) 7bc5dc8c1f3c4dc16e165beac165d73e4cb60530ac0b11bc433f6fba517d67b7 “./.bbc1_app_support” index.py bbc1-lib-registry B 2020 — 6 2 — 2020-11-16 – p.25/38
26. (2) bbc_core.py $ eth_subsystem_tool.py -w ∼/.bbc1 -d config_tree 100 30 100 30 API/ bbc_core.py $ eth_subsystem_tool.py -w ∼/.bbc1 -d enable bbc_core.py index.py B 2020 — 6 2 — 2020-11-16 – p.26/38
27. URL http://localhost:5000/cert/ (API : /api/register [POST]) (API : /api/proof [GET]) (API : /api/verify [GET]) (API : /api/verify [GET]) “i-am-the-walrus-cert.json” “ishindenshin-cert.json” ( ) ( ) “i-am-the-walrus-cert.json” → Verify Certificate API Ethereum 1 ( ) B 2020 — 6 2 — 2020-11-16 – p.27/38
28. API JSON B 2020 — 6 2 — 2020-11-16 – p.28/38
29. (1) “beatles-singles-doc.json” → Register Document 30 Ethereum ( ) 1 → Get Certificate “Download Certificate” proof JSON → Verify Certificate B 2020 — 6 2 — 2020-11-16 – p.29/38
30. (2) JSON { "id": "5099920311971", "title": "Penny Lane", "artist": "The Beatles", "writer": "Lennon-McCartney", "year": "1967" } ( ) Generate Key Pair API Return Values “privkey” ( “pubkey” ) JSON “year” ( ) “privkey” Sign Document API Return Values “algo” “sig” “pubkey” 3 “privkey” 3 (“privkey” ) B 2020 — 6 2 — 2020-11-16 – p.30/38
31. (1) ( ) “ishindenshin-cert.json” { "id": "YLR-709A", "title": " ", "artist": "YMO", "writer": [ {"name": " "}, {"name": " "}, {"name": " "}, {"name": " "} ], "year": "1983", : } B 2020 — 6 2 — 2020-11-16 – p.31/38
32. (2) ( ) Get Digest { "writer": [ {"name": " "}, {"name": " "}, {"name": " "}, {"name": " "} ] } { "name": " " } “digest” “writer” “name” B 2020 — 6 2 — 2020-11-16 – p.32/38
33. (3) ( ) { "id": "YLR-709A", "title": " ", "artist": "YMO", "digest": "bca7d161ae5fce25a55e888e4704f506282b402846132fa9b38d2fb6b72dc405", "year": "1983", : } “writer” B 2020 — 6 2 — 2020-11-16 – p.33/38
34. (4) ( ) { "id": "YLR-709A", "title": " ", "artist": "YMO", "writer": [ {"digest": "5413e837a58878d2b077d14358f7769c8ae791f9deb0475d58d53ff8de1b8973"}, {"name": " "}, : } . . . ( ) ( ) ( ) B 2020 — 6 2 — 2020-11-16 – p.34/38
35. API ( ) → → → Pet Adoption Platform → ( ) → → B 2020 — 6 2 — 2020-11-16 – p.35/38
36. B 2020 — 6 2 — 2020-11-16 – p.36/38
37. 4. API (1) ( ) (2) API Certify Web API 2020 11 28 ( ) 23:59 JST B 2020 — 6 2 — 2020-11-16 – p.37/38
38. B 2020 — 6 2 — 2020-11-16 – p.38/38