BBc-2 office@beyond-blockchain.org https://speakerdeck.com/beyondblockchain BBc-2 — — 2023-11-15 – p.1/26

BBc-2 API ( ) BBc-2 BBc-2 — — 2023-11-15 – p.2/26

BBc-2 BBc-2 BBc-1 ( ) / ⇒ / BBc-2 — — 2023-11-15 – p.3/26

( ) τʔΫϯ ୅ସ՟ฎ εϚʔτίϯτϥΫτ ݕূՄೳͳঢ়ଶϚγϯ ϓϩϏφϯε དྷྺূ໌ ୅ସՄೳ ঈؐෆೳ ୅ସՄೳ ঈؐՄೳ ୅ସෆೳ ঈؐՄೳ ୅ସෆೳ ঈؐෆೳ ূ໌͢Δ ಉఆ͢Δ ࢧ෷͍౳ ࠷ॳͷԠ༻ *%Χʔυ౳ ηΩϡϦςΟ τʔΫϯ ূ݊ ౳ ηϯαʔ౳ ෺ྲྀɾ Ҩݴॻ౳ อݥਃ੥౳ ௥੻͢Δ ײ஌͢Δ தԝۜߦ σδλϧ௨՟౳ ҭ੒ήʔϜ౳ ൿີ伴Λ࢖͑Δ͔Βຊਓʁ ෛ࠴ Ξηοτͷ ਺஋දݱΛҠసͰ͖Δʁ ొ࿥͞Εͨίʔυͱ ͦͷ࣮ߦϩάͱ݁Ռͷ ਅਖ਼ੑΛ୲อͰ͖Δʁ ݖҖ͕ Կ͔ͷ಺༰Λূ໌͢Δʁ ࣋ଓ͢Δଘࡏʹ͍ͭͯ ه࿥ΛΞοϓσʔτՄʁ ओମ͕͍ͳ͘ͳͬͯ΋ աڈͷσʔλ͸༗ޮʁ /'5 Ұൠతͳ ೝࣝ ػೳͷ ෼ੳ݁Ռ BBc-2 — — 2023-11-15 – p.4/26

Python3 bbc2 : https://speakerdeck.com/beyondblockchain/bbc-2-hands-on-basic-installation BBc-2 — — 2023-11-15 – p.5/26

Certify Certify BBc-2 — — 2023-11-15 – p.6/26

Certify Certify BBc-2 BBc-2 Certify API Certifiy API JSON ( ) XML ( ) (= ) Certify API ( ) (API ) BBc-2 — — 2023-11-15 – p.7/26

Certify Web GitHub git clone $ git clone -b develop https://github.com/beyond-blockchain/bbc2-examples.git $ cd bbc2-examples/certify GitHub index.py BBc-2 $ python index.py ( ) http://localhost:5000 BBc-2 — — 2023-11-15 – p.8/26

Certify / (1) Certify JSON { "id": "AR-1838B", "title": "I Am the Walrus", "artist": "The Beatles", "writer": "Lennon-McCartney", "year": "1967" } “proof” Merkle Proof ( ) BBc-2 — — 2023-11-15 – p.9/26

( ) จ ॻ จ ॻ จ ॻ จ ॻ จ ॻ O μΠδΣετ μΠδΣετ μΠδΣετ μΠδΣετ μΠδΣετ μΠδΣετ μΠδΣετ ح਺ͷ৔߹͸ ෳ੡͢Δ ɾจॻ Λಘͨ" ࢯ͸ɺಉ࣌ʹূ໌ཁૉͱͯ͠ɺϒϧʔͰࣔ͞ΕΔμΠδΣετͱ֤ʑ͕ࠨӈͷͲͪΒʹҐஔ͢Δ͔Λड͚औΔɻ ɾ" ࢯ͸จॻ ͷμΠδΣετ͔Β࢝Ίͯɺ࿈݁͢΂͖Ұ࿈ͷμΠδΣετΛ஌Δ͜ͱʹͳΔͷͰɺϚʔΫϧϧʔτʹࢸΔ·Ͱͷ ɹܭࢉΛ࠶ݱͰ͖ɺಘΒΕͨϚʔΫϧϧʔτ͕ &UIFSFVN εϚʔτίϯτϥΫτʹه࿥͞Ε͍ͯΔ஋ͱҰக͢Δ͜ͱΛ֬ೝͰ͖Δɻ ɾͦͷܭࢉΛ୅ߦ͢Δͷ͕DFSUJGZͷαʔϏε ݪཧͷཧղͱඞཁͳ৘ใ͕͋Ε͹୭Ͱ΋࠶ݱͰ͖Δ ূ໌͞ΕΔ ɻ ه࿥͢Δ ಡΈग़ͤΔ ূ໌Λ ඞཁͱ͢Δऀʹ ։ࣔ͞ΕΔ৘ใ ˞##D͸ɺ͜ͷߏ଄Λอଘ ɹ͍ͯ͠Δ͕ɺαϒπϦʔΛ ɹূ໌ཁૉԽͯ͠౉ͨ͠ޙ͸ɺ ɹূ໌͢Δ্Ͱ͸##D ͸ෆཁ ެ։͞ΕΔ৘ใ ϚʔΫϧϧʔτ Ϛ ồ Ϋ ϧ ໦ γ ε ς Ϝ ͕ อ ؅ ͠ ֤ Ϣ ồ β ʹ ෦ ෼ త ʹ ఻ ͑ Δ ʜʜ ʜʜ ʜʜ ʜʜ ʜʜ μΠδΣετ μΠδΣετ μΠδΣετ μΠδΣετ μΠδΣετ μΠδΣετ &UIFSFVNϒϩοΫνΣʔϯ ʜ ʜ ##DϥΠϒϥϦɾ"1* ূ໌ॻΞϓϦͰ࣮ݱ BBc-2 — — 2023-11-15 – p.10/26

Certify / (2) JSON “id”: (bbc2.lib.document_lib ) “digest”: SHA-256 SHA-256 /certify-api/digest API “_docs”: ( ; ) “proof”: ( ) Merkle Proof “privkey”: ( ) ( ) - /certify-api/keypair API ( ) “pubkey”: ( ) “sig”: (pubkey ) “algo”: algo, sig, pubkey /certify-api/sign API ( ) BBc-2 — — 2023-11-15 – p.11/26

Certify / (3) “proof” "proof": { "spec": { "subsystem": "ethereum", "network": "goerli", "contract": "BBcAnchor", "contract_address": "0x8c6DB26Ab0eAaDcB46438DDEEE7baD2271e2df71", "block": 9098749 }, "subtree": [ { "position": "left", "digest": "6578c8c585be7aa25e5619cedfbc02820c223d667a2561b92c9de9656fded793" }, : # ] } BBc-2 — — 2023-11-15 – p.12/26

(1) ( ) (bbc_serv.py ) $ curl -X POST http://localhost:5000/cert/setup domain id (“certify_web_domain” ) 7bc5dc8c1f3c4dc16e165beac165d73e4cb60530ac0b11bc433f6fba517d67b7 BBc-2 — — 2023-11-15 – p.13/26

(2) bbc_serv.py $ bbc_eth_tool.py -w ~/.bbc2 -d config_tree 100 30 100 30 API/ bbc_serv.py $ bbc_eth_tool.py -w ~/.bbc2 -d enable bbc_serv.py index.py BBc-2 — — 2023-11-15 – p.14/26

URL http://localhost:5000/cert/ (API : /certify-api/register [POST]) (API : /certify-api/proof [GET]) (API : /certify-api/verify [GET]) (API : /certify-api/verify [GET]) “i-am-the-walrus-cert.json” “ishindenshin-cert.json” ( ) “i-am-the-walrus-cert.json” → Verify Certificate API Ethereum 1 ( ) BBc-2 — — 2023-11-15 – p.15/26

(BBc-1 ) API JSON BBc-2 — — 2023-11-15 – p.16/26

(1) “beatles-singles-doc.json” → Register Document 30 Ethereum ( ) 1 → Get Certificate “Download Certificate” proof JSON → Verify Certificate BBc-2 — — 2023-11-15 – p.17/26

(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” ) BBc-2 — — 2023-11-15 – p.18/26

(1) ( ) “ishindenshin-cert.json” { "id": "YLR-709A", "title": " ", "artist": "YMO", "writer": [ {"name": " "}, {"name": " "}, {"name": " "}, {"name": " "} ], "year": "1983", : } BBc-2 — — 2023-11-15 – p.19/26

(2) ( ) Get Digest { "writer": [ {"name": " "}, {"name": " "}, {"name": " "}, {"name": " "} ] } { "name": " " } “digest” “writer” “name” BBc-2 — — 2023-11-15 – p.20/26

(3) ( ) { "id": "YLR-709A", "title": " ", "artist": "YMO", "digest": "bca7d161ae5fce25a55e888e4704f506282b402846132fa9b38d2fb6b72dc405", "year": "1983", : } “writer” BBc-2 — — 2023-11-15 – p.21/26

(4) ( ) { "id": "YLR-709A", "title": " ", "artist": "YMO", "writer": [ {"digest": "5413e837a58878d2b077d14358f7769c8ae791f9deb0475d58d53ff8de1b8973"}, {"name": " "}, : } . . . ( ) ( ) ( ) BBc-2 — — 2023-11-15 – p.22/26

ID { "id": "4445 4558 1689", "name": "Wednesday Addams", "born": "1980-02-12", "address": "0001 Cemetery Lane", "public-key": "04d49e0786a37efce8552d6fd1566d7cfd86f110d4d95f1...4edb", "algo": "ecdsa-p256v1", "sig": "609b390f9486110d1ba39fc59cc46f1c2aa31ae8e40d3454c05a42...48e2", "pubkey": "0479c6676de61b41b7d0291b338f3279671d649f0a71bbb495...4bd1", } (Merkle) Ethereum ID BBc-2 — — 2023-11-15 – p.23/26

*%Χʔυจॻ JEJE OBNF8FEOFTEBZ"EEBNTOBNF 8FEOFTEBZ"EEBNT ͷ΋ͷ ࣏ࣗମͷ΋ͷ CPSOCPSO BEESFTT$FNFUFSZ-BOFBEESFTT QVCMJDLFZEFDFECQVCMJDLFZ *% Χʔυจॻ ͷμΠδΣετ ॺ໊෇͖ *% Χʔυจॻ ͷμΠδΣετ ࿈͔݁ͯ͠Β ܭࢉ͢Δ ॺ໊Λݕূ͠ɺ ੒ޭͨ͠Β ࿈͔݁ͯ͠Β ܭࢉ͢Δ EJHFTU EJHFTU EJHFTU BMHPSJUIN TJHOBUVSF QVCMJDLFZ EJHFTU EJHFTU EJHFTU EJHFTU +40/ σʔλߏ଄͸ɺ಺෦ॲཧͰ͸ 9.- ʹม׵͞Ε·͢ ΋ͱ΋ͱ 9.- ༻ʹ࡞ͬͯ͋ΔϥΠϒϥϦΛ࢖༻͍ͯ͠·͢ ɻ ෦෼తʹӅ͞Ε͍ͯͯ΋ূ໌Ͱ͖ΔΑ͏ʹɺηΫγϣϯ͝ͱʹμΠδΣετΛܭࢉ͍ͯ͠·͢ɻ ྫ͑͹ɺ*% ΧʔυͰ೥ྸ΍ॅॴɺ͋Δ͍͸ެ։伴Λ֬ೝ͢Δ͚ͩͰ͋Ε͹ɺ*% ൪߸ΛݟΔ͜ͱ͕๏཯Ͱېࢭ͞Ε͍ͯΔ౳ͷ৔߹ɺ *% ൪߸ΛӅͯ͠ ͦͷ෦෼ΛରԠ͢ΔμΠδΣετͰஔ͖׵͑ͯ ఏࣔͯ͠΋࠷ऴతʹॺ໊෇͖ *% Χʔυจॻͷಉ͡μΠδΣετΛܭࢉͰ͖ΔͷͰɺଘࡏূ໌͕Ͱ͖·͢ɻ ʮμΠδΣετʯͱ͸ɺ҉߸ֶతϋογϡؔ਺ʢࠓճ͸ 4)"ʣʹΑͬͯܭࢉ͞Εͨ஋ͷ͜ͱͰ͢ɻ Θ͔ͣ ϏοτͰ΋ݩͷσʔλ͕ҟͳΔͱɺฦͬͯ͘Δ஋͕શ͘ҟͳΓɺμΠδΣετ͔ΒݩͷσʔλΛ ਪଌ͢Δ͜ͱ͸Ͱ͖·ͤΜɻ BBc-2 — — 2023-11-15 – p.24/26

JSON ( ) https://doi.org/10.1016/j.icte.2021.08.012 BBc-2 — — 2023-11-15 – p.25/26

API ( ) ID BBc-2 certify certify-api document_lib BBc-2 — — 2023-11-15 – p.26/26