Web3 のリアリティ / Web3 Reality

早稲田大学大学院経営管理研究科「フィンテック ─ 金融革新とインターネット」2025 夏の第3-4回で使用したスライドです。

Transcript

1. Light and Shadow — Generated by Stable Diffusion 3.5 — 2025 3-4 Web3 (WBS) — 2025 3-4 Web3 — 2025-06-16 – p.1/48
2. https://speakerdeck.com/ks91/collections/fintech-2025-summer — 2025 3-4 Web3 — 2025-06-16 – p.2/48
3. ( ) 1 6 9 (1) • 2 6 9 (2) • 3 6 16 Web3 (1) • 4 6 16 Web3 (2) • 5 6 23 (1) 6 6 23 (2) 7 6 30 (1) 8 6 30 (2) 9 7 7 (1) 10 7 7 (2) 11 7 14 (1) 12 7 14 (2) 13 7 21 (1) 14 7 21 (2) W-IOI ( ) — 2025 3-4 Web3 — 2025-06-16 – p.3/48
4. ( 20 ) 1 ↑ 2 ↓ 2025 3 4 (TCP/IP ) 5 6 7 8 ↑ 9 ↓ 2024 ( ) 10 World Wide Web 11 Web API 12 * 13 git GitHub 14 (6/23 ) / (2 ) OK / — 2025 3-4 Web3 — 2025-06-16 – p.4/48
5. ( ) (FinTech) — 2025 3-4 Web3 — 2025-06-16 – p.5/48
6. Web3 (1) — Web3 (2) — on API ( ) — 2025 3-4 Web3 — 2025-06-16 – p.6/48
7. — 2025 3-4 Web3 — 2025-06-16 – p.7/48
8. 1. (1) (2) (plain text) ( ×) 2025 6 12 ( ) 23:59 JST ( ) Waseda Moodle — 2025 3-4 Web3 — 2025-06-16 – p.8/48
9. . . . . . . 17 ( ) 16 (6/14( ) ) ( ) 20 (1990 ) ( ) — 2025 3-4 Web3 — 2025-06-16 – p.9/48
10. (tetrad) = ( ) 4 : ? : ? : ? : ? — — 2025 3-4 Web3 — 2025-06-16 – p.10/48
11. ڧԽ ਰୀ ճ෮ ൓స ॏཁ͕ͩݟམͱ͞Ε͕ͪͳޮՌ ਰୀʹΑΓ෮׆ ൓సʹΑΓਰୀ ੈքதͷ৘ใ΍ਓͱɺ͙͢ʹɾ؆୯ʹͭͳ͕Δ ͭͳ͕Γ਺ ՋͭͿ͠ ޾෱ײ ಗ໊ੑ ిࢠతͳܦࡁ׆ಈ ؀ڥͷฏ४Խ اۀͷෆਖ਼΍ϋϥεϝϯτͳͲͷൃݟ ݸਓ޲͚޿ࠂɾλʔήςΟϯά޿ࠂ ϦϞʔτϫʔΫ ϓϥοτϑΥʔϚʔ ݸʢݸਓɺݸੑɺݸମɺݸผͷҙຯʣ ɺࣗ༝ ৘ใͷಁ໌ੑɾ৘ใͷඇରশੑͷղফɺ৴པͷՄࢹԽɾఆྔԽ ਫฏతͳؔ܎ʢώΤϥϧΩʔͰ͸ͳ͍ʣ ৘ใࣾձ ৘ใڞ༗ͷଈ࣌ੑɺ૒ํ޲ίϛϡχέʔγϣϯɺάϩʔόϧͳ઀ଓੑɺ ஌ࣝΞΫηεͷຽओԽ ࢴͷࣙॻɺखࢴɺ৽ฉɺ$% ΍ %7%ɺి࿩ாɺ஍ਤா தԝूݖɾू໿ ஌ࣝ΍৘ใͷಠ઎ ઐ໳ੑ ϦΞϧײ ෺ཧతڑ཭ ΦʔϧυϘʔΠζΫϥϒ Էചۀऀɾ஥հऀ ϋϥεϝϯτ΍ෆਖ਼ɾෆ঵ࣄ͕ԣߦ͢Δاۀ ਎ମੑΛ൐͏ର໘ίϛϡχέʔγϣϯ ࢮͷ֓೦ʢσδλϧΞʔΧΠϒͰଘࡏ͠ଓ͚ΒΕΔʣ Կ΋ߟ͑ͳ͍࣌ؒɾՋ ॻ੶ɺ༣ศɺਤॻؗɺ'"9ɺϚεϝσΟΞͱͯ͠ͷςϨϏɺ ϦΞϧళฮͰͷങ͍෺ɺϦΞϧͰͷଧͪ߹Θͤɺࢴഔମͷ໊ࢗަ׵ ϑΣΠΫχϡʔεɺதইɺ4/4 ґଘɺݸਓ৘ใͷ࿙͍͑ σδλϧλτΡʔ ΤίʔνΣϯόʔ αΠόʔ߈ܸ ຊ཭ΕɺจԽతج൫ͷਰୀ શମओٛ΍ϙϐϡϦζϜͷ୆಄ ද໘తͳͭͳ͕Γͷ൙ཞʹΑͬͯɺ ͔͑ͬͯਂ͍ਓؒؔ܎͕ங͖ʹ͘͘ͳΔ ૬ޓ؂ࢹࣾձ σδλϧστοΫε ਓؒΒ͠͞ ৘ใ֨ࠩ ਎ମੑͷرബԽ ग़ࣾճؼ ͏Θ͞ʹΑΔࢢ৔ͷࠞཚ ϝλόʔε΍ి೴ੈք ਓຽઔಈ ৘ใաଟɺ෼அͱϑΟϧλʔόϒϧɺ஫ҙྗͷ௿Լɺݽཱײɺωοτதಟ ਓͱਓͱͷͭͳ͕Γ ௚઀औҾ ࢢ৔ͷۭؾ ίϛϡχςΟ ࣗ༝࣌ؒ ௕͍௨ۈ͔࣌ؒΒͷղ์ ࣾձنൣ͔Βҳ୤͢Δදݱͷࣗ༝ ಡ·Ε͍ͯͳ͔ͬͨॻ੶΍จݙʢϩϯάςʔϧͷ๏ଇʣ ৴པɾڞײʹجͮ͘ඇ՟ฎతͭͳ͕Γ ޷͖ͳ͜ͱΛ࢓ࣄʹ͢Δ ωοτϫʔΫܗ੒ ஌ࣝͷूੵͱڞ༗ ݹయ ޱ಄఻ঝͷΑ͏ͳ૒ํ޲తͳ΍ΓͱΓɺ޿৔తۭؒɺจ௨ ϦϯνɺσϚ — 2025 3-4 Web3 — 2025-06-16 – p.11/48
12. : End-to-End, GAFA — 2025 3-4 Web3 — 2025-06-16 – p.12/48
13. Y ⇒ ( ) ( ) ATM ( ATM ATM ) ⇒ ⇒ ⇒ ⇒ — 2025 3-4 Web3 — 2025-06-16 – p.13/48
14. Y ⇒ — 2025 3-4 Web3 — 2025-06-16 – p.14/48
15. Web3 (1) — ← Web3 NFT DAO — 2025 3-4 Web3 — 2025-06-16 – p.15/48
16. ( ) NFT ( web3 ) NFT — 2025 3-4 Web3 — 2025-06-16 – p.16/48
17. — 2025 3-4 Web3 — 2025-06-16 – p.17/48
18. NFT Minecraft VRChat (VR) NFT NFT Minecraft — 2025 3-4 Web3 — 2025-06-16 – p.18/48
19. .JOFDSBGU
    ʙ ҉߸ࢿ࢈ɾ/'5
    ⁇ 3PCMPY
    ʙ ҉߸ࢿ࢈ɾ/'5
    ʓ 73$IBU
    ʙ ҉߸ࢿ࢈ɾ/'5
    ʷ 5IF
    4BOECPY
    ʙ ҉߸ࢿ࢈ɾ/'5
    ʓ ̍ ೔ ͷ Ϣ ồ β ਺ 0 200000 400000 600000 ˞
    IUUQTNNPTUBUTDPN
    ͕ఏڙ͢ΔσʔλΛݩʹ࡞੒ ZEPETO (2018∼) ( NFT ) The Sandbox 100 Roblox/Minecraft 1 10 Axie Infinity (2018∼) [ ] ( NFT ) The Sandbox 2 Decentraland (2020∼) ( NFT ) The Sandbox 1 10 — 2025 3-4 Web3 — 2025-06-16 – p.19/48
20. VRChat vs. NeosVR ( ) 73$IBU
    ʙ ҉߸ࢿ࢈ɾ/'5
    
    ʷ NeosVR (2018ʙ) ҉߸ࢿ࢈ɾ/'5
    
    ʓ ௚ۙ աڈ࣌ؒͷϐʔΫ աڈ࠷େͷϐʔΫ ಉ ࣌ ઀ ଓ Ϣ ồ β ਺ 0 10000 20000 30000 40000 ˞
    IUUQTTUFBNDIBSUTDPN
    ͕ఏڙ͢Δ ɹ
    σʔλΛݩʹ࡞੒ ˞
    ήʔϜϓϥοτ ϑΥʔϜ
    4UFBN
    ͷ
    "1*
    ͔Β ɹ
    औಘ͞ΕͨσʔλʹଇΔ NeosVR NFT ( ) VRChat — 2025 3-4 Web3 — 2025-06-16 – p.20/48
21. Interop Tokyo . . . . . . (1) (AGI) ∼ ∼ — 2025 3-4 Web3 — 2025-06-16 – p.21/48
22. ( ) Web3 Web 3.0 World Wide Web Web 2.0 “web3.py” Python Ethereum NFT ( ) Web3 Web 3.0 — 2025 3-4 Web3 — 2025-06-16 – p.22/48
23. Web3 Web3 — 2025 3-4 Web3 — 2025-06-16 – p.23/48
24. Web 1-2-3 ͍ΘΏΔ 8FC
     8FC
     ໰୊ͷۚ༥Խ Ϣʔβࣗ਎͕ʮ؆୯ʹʯσʔλͷੜ࢈ऀʹ ΋͏ͻͱͭ ͷࢭ༲ ࢭ༲ 4FNBOUJD
    8FC  l8FC
    z
    ॳग़
      8FC
     ˠ
    8FC           8FC
     ૊৫ʹ ؅ཧͤͣ͞ɺ σʔλΛϢʔβͷ खʹऔΓ໭ͦ͏ ͢΂ͯͷ໰୊͸ ͢΂ͯΛ ۚ༥τʔΫϯԽͯ͠ ղܾ͠Α͏ #FSOFST-FF ͷ #FSOFST-FF ͷ 0` 3FJMMZ ͷ 8PPE ͷ #JUDPJO ε ϊ ồ σ ϯ ࣄ ݅ Ϧ ồ Ϛ ϯ ɾ γ ἀ ỽ Ϋ Π ϯ λ ồ ω ỽ τ ঎ ༻ Խ &UIFSFVN 4PMJE ϓϩδΣΫτ΁ Ϣʔβࣗ਎ͱ ެӹͷͨΊʹ σʔλ͸ࣗ༝ʹ ׆༻Ͱ͖͍ͯΔ͔ʁ — 2025 3-4 Web3 — 2025-06-16 – p.24/48
25. Web 3.0 Web3 Web 1.0 (Berners-Lee) : Read × Write → Web 2.0 (O’Reilly) : Read × Write ← (Web 1.0 ) Web 3.0 (Berners-Lee) → Solid (Social linked data) Web 3.0 → Web3 (Wood) Ethereum ← web3.js, web3.py Web3 (Dixon) : Read × Write × Own (Bloomberg) — 2025 3-4 Web3 — 2025-06-16 – p.25/48
26. python 3.12.3 solc 0.8.30 ( ) (Solidity ( ) ) ( ) py-solc-x node v22.16.0 ganache v7.9.2 (Ethereum RPC + ) eth-brownie 1.20.7 (Python Ethereum ) web3 6.15.1 (Python Ethereum ) py-solc-x 1.1.1 (Solidity Python + ) macOS Sequoia 15.5 lima 1.0.7 Ubuntu 24.04 LTS — 2025 3-4 Web3 — 2025-06-16 – p.26/48
27. Python3 eth-brownie . . . $ python3 -m venv demoenv $ source demoenv/bin/activate $ pip install -U pip $ pip install eth-brownie==1.20.7 eth-brownie web3.py — 2025 3-4 Web3 — 2025-06-16 – p.27/48
28. Ethereum Python NFT — 2025 3-4 Web3 — 2025-06-16 – p.28/48
29. : Bitcoin . . . : ( : ) ( ) : : : ⇒ — 2025 3-4 Web3 — 2025-06-16 – p.29/48
30. Ethereum        ߹ҙ͞Εͨཤྺ ϩʔΧϧʹෳ੡Λҡ࣋ ϒϩοΫ εϩοτ  ඵִؒ  εϩοτͰ  ΤϙοΫ ҉߸ֶతμΠδΣετ ϒϩοΫνΣʔϯͷҡ࣋ࢀՃऀ͕ϩʔΧϧʹ؅ཧ͢Δσʔλۭؒ ࣌ؒ
    ΑΓ৽͍͠ه࿥ ΦϒδΣΫτ τʔΫϯγεςϜ౳ͷεϚʔτίϯτϥΫτ ֤Ϣʔβͷ ࢒ߴ౳ͷঢ়ଶ ঢ়ଶ` ঢ়ଶ`` τϥϯβΫγϣϯ
     ΦϒδΣΫτͷੜ੒ ·ͨ͸ঢ়ଶભҠͷࢦࣔ ແޮͳཤྺ ω ỽ τ ϫ ồ Ϋ Λ ௨ ͠ ͯ ૹ ड ৴ ͞ Ε Δ ϩ ồ Χ ϧ ʹ ࣋ ͭ ܨ͙ͨΊʹ͸
    &5) Ͱͷσϙδοτͱ σϙδοτ૯ֹͷ ♤ ૬౰ͷϢʔβʹΑΔ ΤϙοΫ΁ͷূݴ͕ඞཁ શΦϒδΣΫτͷભҠޙͷঢ়ଶ ͕ϋογϡ໦˞ʹू໿͞Ε ͦͷ ϧʔτ஋͕ϒϩοΫʹॻ͔ΕΔ ঢ়ଶભҠ ˞
    ϋογϡ໦
    
    σʔλ܈ͷ҉߸ֶతμΠδΣετ ϋογϡ ɹ
    Λ໦ߏ଄ʹදݱͨ͠΋ͷͰ
    ෆ੔߹ͷݕग़ʹ༻͍ΒΕΔ . . . ETH ETH — 2025 3-4 Web3 — 2025-06-16 – p.30/48
31. Ethereum Ethereum $ brownie console # eth-brownie (Python ) # ↓ Python >>> network.disconnect() # ( ) >>> network.connect(’mainnet’) # Ethereum >>> web3.eth.block_number # >>> web3.eth.get_block( ) # >>> web3.eth.get_block( ).get(’timestamp’) # >>> import datetime >>> dt = datetime.datetime.fromtimestamp( ) >>> print(dt) # — 2025 3-4 Web3 — 2025-06-16 – p.31/48
32. &UIFSFVN
    ωοτϫʔΫ  &7. &0" &5) ࢒ߴ &5) (BT εϚʔτ ίϯτϥΫτ ϝοηʔδʹΑΔ ݺͼग़͠ τϥϯβ Ϋγϣϯ ॺ໊ͯ͠ ౤ೖ ϒϩοΫʹ ૊ΈࠐΈˠ όϦσʔλ Ϣʔβ ॲ ཧ ˞
    (BT ͸ܭࢉࢿݯͷྔΛද͢ ˞
    (BT ࢖༻ྉΛ &5) Ͱࢧ෷͏Ϣʔβ͕τϥϯβΫγϣϯΛ౤ೖ͠ͳ͍ݶΓ ɹ
    εϚʔτίϯτϥΫτ͸ಈ࡞͠ͳ͍ . . . Ethereum (EVM) ETH ↑ DAO — 2025 3-4 Web3 — 2025-06-16 – p.32/48
33. $ brownie bake nft nft ( ) contracts SimpleCollectible.sol ERC-721 NFT $ cd nft # nft $ brownie console # eth-brownie (Python ) >>> network.disconnect() # >>> network.connect(’sepolia’) # Ethereum >>> accounts.add( ) # >>> collectible = SimpleCollectible.deploy({’from’: accounts[0]}) # NFT 1,435,343 Gas Invalid version brownie-config.yaml chainlink@2.24.0 (2 ) contracts SimpleCollectible.sol — 2025 3-4 Web3 — 2025-06-16 – p.33/48
34. NFT (Non-Fungible Token) 1 → ( ) → ( ) ( ) ( ) NFT NFT — 2025 3-4 Web3 — 2025-06-16 – p.34/48
35. ERC-721 NFT τʔΫϯ *% ൪߸ 63- ΞυϨε 63- /'5 Ұҙ Ұҙʁ Ұҙʁ Ұҙ ࣄ্࣮ Ұҙ ެ։伴ͷ μΠδΣετ ϝλσʔλ ίϯτϥΫτͱ͍͏ఆٛҬ ˞
    ͦͷίϯτϥΫτͱ͍͏ఆٛҬͷதͰ ࣮ઢ໼ҹͰࣔͨ͠ҰҙੑΛอূ͢Δʹա͗ͳ͍ ˞
    ഁઢ໼ҹͰࣔͨ͠Ұҙੑ͸ ࣮૷ɾӡ༻ͷ޻෉࣍ୈͰอূͰ͖Δ ɹ
    ྫ͑͹
    63- ʹͦΕ͕ࢦ͢Ϧιʔεͷ҉߸ֶతμΠδΣετΛؚΊΔ͜ͱ ྫ 
    *1'4 ͷར༻ ʹΑΓ ɹ
    ʮ63-
    ˠ
    σʔλʯͷҰҙੑΛอͯΔ ͦͷ৔߹Ͱ΋ʮσʔλ
    ˠ
    63-ʯͷҰҙੑ͸ແ͍ ର৅σʔλ ը૾౳ ॴ༗ऀ ϝλσʔλ 63- ର৅σʔλ 63- ൿີ伴 Ұҙ Ұҙʁ Ϣʔβ Ұҙʁ — 2025 3-4 Web3 — 2025-06-16 – p.35/48
36. NFT URL NFT >>> collectible.createCollectible( URL) # NFT URL NFT NFT >>> network.disconnect() # >>> network.connect(’mainnet’) # Ethereum >>> collectible = SimpleCollectible.at(’ ’) # >>> collectible.ownerOf(OpenSea NFT ID) # >>> collectible.tokenURI(OpenSea NFT ID) # — 2025 3-4 Web3 — 2025-06-16 – p.36/48
37. NFT σʔλ " ϒϩοΫνΣʔϯ #⒩ ʜ ʜ ϒϩοΫνΣʔϯ #⒪ ʜ ʜ εϚʔτίϯτϥΫτ $⒩ εϚʔτίϯτϥΫτ $⒪ ಛఆͷετϨʔδ ˞
    Ͳ͜ʹஔ͔ΕΑ͏ͱ΋ ɹ
    ౳͍͠σʔλ͸ಉ͡΋ͷ ϒϩοΫνΣʔϯ͕ಉ͡Ͱ΋ҟͳͬͯ ͍ͯ΋ εϚʔτίϯτϥΫτ͕ҟͳ ΔΠϯελϯεͳΒఆٛҬ͸ผͱͳΔ ଟ͘ͷ৔߹ ې͡ΒΕͳ͍ ېࢭͰ͖ͳ͍ ˞
    /'5 ͕σʔλΛࢦ͢ํࣜͱσʔλΛ֨ೲ͢Δํࣜ͸ σʔλͷՄ༻ੑ͸ҟͳΔͱͯ͠΋ҰҙੑʹؔΘΔੑ࣭͸มΘΒͳ͍ ಉҰ εϚʔτίϯτϥΫτ $⒫ εϚʔτίϯτϥΫτ $⒬ /'5⒩ /'5⒪ /'5⒫ /'5⒬ /'5⒮ /'5⒭ σʔλ "  ېͣΔΑ͏ͳ ઃܭ͸ίετߴ ېࢭͰ͖ͳ͍ — 2025 3-4 Web3 — 2025-06-16 – p.37/48
38. NFT NFT NFT >>> collectible.ownerOf( NFT ID) # >>> collectible.ownerOf( NFT ID) # NFT Ethereum Ethereum NFT NFT Ethereum Lazy Minting (?) ( ) (Gas ) — 2025 3-4 Web3 — 2025-06-16 – p.38/48
39. DAO (Decentralized Autonomous Organization) — 2025 3-4 Web3 — 2025-06-16 – p.39/48
40. DAO ಺෦ࢿຊˢ͋Δ ɹɹɹɹˣͳ͍ தԝʹࣗಈ ɹɹɹɹɹWT ɹɹɹɹɹɹதԝʹਓؒ ׬શͳ "* σʔϞϯ˞ ϑΥʔϥϜ˞ XFC αʔϏε ϩϘοτΛ࢖໾ %"0 %"QQ˞ ݹయత૊৫ ɹɹɹɹɹ
    
    पลʹਓؒ ɹɹɹɹ
    
    WT पลʹࣗಈ ˞
    %"QQ
    
    εϚʔτίϯτϥΫτʹΑΔΞϓϦέʔγϣϯ
    %FDFOUSBMJ[FE
    "QQ ˞
    ϑΥʔϥϜ
    
    ਓʑ͕ಛఆͷ࿩୊ʹ͍ͭͯٞ࿦ͨ͠Γ৘ใΛަ׵ͨ͠Γ͢Δ৔ ˞
    σʔϞϯ
    
    όοΫάϥ΢ϯυͰՔಇ͠
    ΠϕϯτʹࣗಈతʹରԠ͢ΔϓϩάϥϜ . . . Buterin DAO (2014) — 2025 3-4 Web3 — 2025-06-16 – p.40/48
41. DAO $ brownie bake dao README https://github.com/brownie-mix/dao-mix ( OpenZeppelin ) ( ) ( DAO ) ( ) DAO . . . (2024 4 ) DAO ( ) — 2025 3-4 Web3 — 2025-06-16 – p.41/48
42. DAO Bitcoin DAO → DAO Ethereum DAO → . . . DAO ( ) ( ) DAO → . . . ( ) ↑ ( ) ← — 2025 3-4 Web3 — 2025-06-16 – p.42/48
43. — Web 3.0 ( ) ( ) ( . . . ) ( ) . . . DAO . . . — 2025 3-4 Web3 — 2025-06-16 – p.43/48
44. Web3 (2) — — 2025 3-4 Web3 — 2025-06-16 – p.44/48
45. : API Pay API (Application Programming Interface) — 2025 3-4 Web3 — 2025-06-16 – p.45/48
46. — 2025 3-4 Web3 — 2025-06-16 – p.46/48
47. 2. (1) (end; ) (2) 2025 6 19 ( ) 23:59 JST ( ) Waseda Moodle — 2025 3-4 Web3 — 2025-06-16 – p.47/48
48. — 2025 3-4 Web3 — 2025-06-16 – p.48/48