Goはブロックチェーン領域でなぜ使われ、どのように活躍しているのか

Google slide: https://docs.google.com/presentation/d/1TTw5Ff26Ze0oiDr2w-cDwXWD8NgGuI0ChI2iGeg4pu0/edit?usp=sharing

1. Go͸ϒϩοΫνΣʔϯྖҬͰͳͥ࢖ ΘΕɺͲͷΑ͏ʹ׆༂͍ͯ͠Δͷ͔ Money Forward, Inc. uji 
 Why and how Go is used and active in the blockchain domain
2. uji
 • Software engineer
 @Money Forward, Inc. Web3 group (Osaka) • A four-year-old Gopher • Kyoto.go organizer
3. Today's goal ϒϩοΫνΣʔϯྖҬͰͷGoͷ࢖ΘΕํΛղઆ͢Δ͜ͱͰ • Go͕΋ͭڧΈΛ஌Γɺٕज़બఆશൠʹ໾ཱͯͯ΋Β͏ • GoΛ௨ͯ͠ϒϩοΫνΣʔϯͷٕज़ΛֶͿ଍͕͔ΓΛఏڙ͢Δ
4. Agenda • ϒϩοΫνΣʔϯͷ֓ཁ • ϒϩοΫνΣʔϯͰ׆༂͢Δϓϩάϥϛϯάݴޠ • GoͰ࣮ݱ͢ΔϒϩοΫνΣʔϯٕज़
5. • ϒϩοΫνΣʔϯͱ͸ɺτϥϯβΫγϣϯ(औҾͷ୯Ґ)Λ
 ҉߸ٕज़ʹΑͬͯه࿥͢Δٕज़ • ͍͔ͭ͘ͷτϥϯβΫγϣϯΛʮϒϩοΫʯͱݺ͹ΕΔ୯ҐͰه࿥͠ɺ
 ͦΕΒΛʮνΣʔϯʯঢ়ʹͭͳ͛Δ͜ͱͰσʔλͷෆมੑͱಁ໌ੑΛ֬อ ϒϩοΫνΣʔϯͷ֓ཁ ϒϩοΫ τϥϯβΫγϣϯ τϥϯβΫγϣϯ τϥϯβΫγϣϯ ϒϩοΫ τϥϯβΫγϣϯ τϥϯβΫγϣϯ τϥϯβΫγϣϯ ϒϩοΫ τϥϯβΫγϣϯ τϥϯβΫγϣϯ τϥϯβΫγϣϯ
6. • ෳ਺ͷϊʔυʢίϯϐϡʔλʔʣͰܗ੒͞ΕΔωοτϫʔΫશମͰ
 ෳ੡ͯ͠ڞ༗͞Εɺ૬ޓʹݕূ͞ΕΔͷ͕Ұൠత ◦ ୯Ұͷ૊৫΍؅ཧऀʹґଘͤͣɺ1ͭͷϊʔυ͕μ΢ϯͯ͠΋γεςϜ͕ࢭ·Βͳ͍ ◦ ϒϩοΫͷվ͟Μ͕ෳ਺ͷ૊৫ɺ؅ཧऀʹΑͬͯݕূ͞ΕΔ • ୯ͳΔ෼ࢄDBʹ͸ͳ͍ɺಁ໌ੑ΍ରվ͟Μੑɺ଱ো֐ੑΛ࣮ݱͰ͖Δ ϒϩοΫνΣʔϯͷ֓ཁ ϒϩοΫνΣʔϯ͸ෳ੡͞Ε ֤ϊʔυʹಉ͡΋ͷ͕อ࣋͞ΕΔ
7. • εϚʔτίϯτϥΫτͱݺ͹ΕΔ࢓૊Έ͕ଘࡏ͢Δ৔߹͕ଟ͍ ◦ ͋Β͔͡ΊܾΊΒΕͨܖ໿΍औҾΛɺ஥հऀͳ͠ͰࣗಈࣥߦͰ͖Δ࢓૊Έ • ϓϩάϥϜΛॻ͘͜ͱͰɺ༷ʑͳऔҾͷ
 ϒϩοΫνΣʔϯ্Ͱͷࣗಈࣥߦ͕࣮ݱͰ͖Δ ◦ ྫ ▪ ҉߸ࢿ࢈ಉ࢜ͷ׵ۚ ▪ ΦϦδφϧͷ௨՟΍NFTͷൃߦɾৡ౉ ϒϩοΫνΣʔϯͷ֓ཁ ਗ਼ྋҿྉਫͷࣗಈൢചػ΋
 εϚʔτίϯτϥΫτͱݴ͑Δ Kyoto.goϒʔεͰ NFT഑෍தʂ
8. ΦϯϥΠϯ্Ͱ஥հऀΛඞཁͱͤͣʹ
 ॊೈͳՁ஋ͷऔҾ͕࣮ݱͰ͖Δ ϒϩοΫνΣʔϯͷՁ஋Λͻͱ͜ͱͰද͢ͱ
9. ϒϩοΫνΣʔϯΛࢧ͑Δओͳٕज़ཁૉ͸ҎԼ • ҉߸ٕज़ • ϒϩοΫνΣʔϯͷσʔλߏ଄ • P2P௨৴ • ίϯηϯαεΞϧΰϦζϜ • τϥϯβΫγϣϯΛॲཧ͢ΔϥϯλΠϜ ϒϩοΫνΣʔϯΛࢧ͑Δٕज़
10. ϒϩοΫνΣʔϯͰ҉߸ٕज़͸ॏཁͳ໾ׂΛ୲͓ͬͯΓɺ
 ͋ΒΏΔ৔໘Ͱར༻͞Ε͍ͯΔ • ΞΧ΢ϯτͷ؅ཧ ◦ ϒϩοΫνΣʔϯͷΞΧ΢ϯτ͸ɺެ։伴ͱൿີ伴ͷϖΞͰѻΘΕΔ͜ͱ͕ଟ͍ ◦ 伴ϖΞͷੜ੒΍؅ཧʹ͸ɺsecp256k1ͳͲͷପԁۂઢ҉߸͕ར༻͞ΕΔ • τϥϯβΫγϣϯͷॺ໊ ◦ τϥϯβΫγϣϯൃߦऀ͸σδλϧॺ໊ʹͯΞΧ΢ϯτͷূ໌Λߦ͏ ◦ ECDSA΍EdDSAͳͲͷॺ໊ΞϧΰϦζϜ͕ར༻͞ΕΔ • ϋογϡؔ਺ͷར༻ ◦ ϒϩοΫͷϋογϡ஋ͷܭࢉͳͲ ◦ ओʹKeccak256ͳͲ͕ར༻͞ΕΔ ϒϩοΫνΣʔϯΛࢧ͑Δٕज़ʢ̍ʣ
 ҉߸ٕज़
11. • ϒϩοΫ͸ϒϩοΫϋογϡͱݺ͹ΕΔ஋Λ࣋ͭɺ ◦ લͷϒϩοΫͷϋογϡɺλΠϜελϯϓɺϊϯεͳͲΛϋογϡԽͨ͠΋ͷ • ϒϩοΫ͕લͷϒϩοΫͷϋογϡΛ͓࣋ͬͯΓɺ͋Δ࣌఺ͷϒϩοΫͷ஋ Λม͑ΔͱޙଓͷϒϩοΫͷσʔλ΋มΘͬͯ͘Δ ◦ վ͟Μ͕ݕग़Ͱ͖Δ ϒϩοΫνΣʔϯΛࢧ͑Δٕज़ʢ̎ʣ
 σʔλߏ଄ “Ethereum whitepaper” ΑΓҾ༻ https://ethereum.org/en/whitepaper/
12. • தԝूݖతͳ؅ཧΛඞཁͱ͠ͳ͍࢓૊ΈΛ࣮ݱ͢ΔͨΊʹɺ
 ϒϩοΫνΣʔϯͰ͸P2P(Peer-to-Peer)௨৴͕׆༻͞Ε͍ͯΔ • ωοτϫʔΫʹࢀՃ͢Δϊʔυ(ίϯϐϡʔλʔ)͸ɺP2P௨৴Λ࢖ͬͯɺ
 ϒϩοΫνΣʔϯͷσʔλಉظ΍ϒϩοΫʹ௥Ճ͢ΔલͷऔҾͷݕূΛߦ͏ • ΦϯϥΠϯ্Ͱ஥հऀͳ͠ͷ͓ۚͷऔҾΛ࣮ݱ͢Δ্Ͱ
 P2P௨৴͸ඞਢͷٕज़ ϒϩοΫνΣʔϯΛࢧ͑Δٕज़ʢ̏ʣ
 P2P௨৴
13. • ωοτϫʔΫ಺ͷ͢΂ͯͷϊʔυ͕ϒϩοΫνΣʔϯͷঢ়ଶʹ͍ͭͯ
 ߹ҙΛܗ੒͢ΔͨΊͷ࢓૊Έ • ϒϩοΫੜ੒ऀͷܾఆ΍ɺϒϩοΫʹؚ·ΕΔऔҾͷॱং͚ͮͳͲʹ
 ϧʔϧΛઃ͚Δ͜ͱͰɺೋॏࢧ෷͍΍ωοτϫʔΫࢀՃऀͷෆਖ਼ߦҝΛ๷͙ • νΣʔϯʹΑͬͯ͞·͟· ◦ ྫ: PoW(ϓϧʔϑɾΦϒɾϫʔΫ) ▪ ϏοτίΠϯͰ࢖ΘΕ͍ͯΔ ▪ ϚΠχϯάʢܭࢉ໰୊Λղ͘ߦҝʣͨ͠ϊʔυʹ
 ϒϩοΫੜ੒ݖ͕༩͑ΒΕΔϧʔϧʹΑΓɺෆਖ਼ߦҝͷίετΛ૿Ճ ϒϩοΫνΣʔϯΛࢧ͑Δٕज़ʢ̐ʣ
 ίϯηϯαεΞϧΰϦζϜ
14. • ϊʔυ͸ॊೈͳऔҾΛ࣮ݱ͢ΔͨΊʹɺ
 εϚʔτίϯτϥΫτͳͲͷϓϩάϥϜΛ࣮ߦ͢Δ • ࣮ߦ΍݁ՌͷݕূΛߦ͏ͨΊͷ؀ڥ͕ඞཁͱͳΔ • ϥϯλΠϜͷಛੑ͸ϒϩοΫνΣʔϯʹΑ༷ͬͯʑ
 ੍໿΍ར༻Ͱ͖Δϓϩάϥϛϯάݴޠ͕มΘͬͯ͘Δ ◦ ྫɿEthereum Virtual MachineʢEVMʣ ▪ Solidity΍VyperͳͲͷݴޠͰهड़͞ΕͨεϚʔτίϯτϥΫτΛ࣮ߦͰ͖Δ ▪ νϡʔϦϯά׬શʢϧʔϓΛؚΉ೚ҙͷϓϩάϥϜΛ࣮ߦͰ͖Δʣ ϒϩοΫνΣʔϯΛࢧ͑Δٕज़ʢ̑ʣ
 τϥϯβΫγϣϯΛॲཧ͢ΔϥϯλΠϜ
15. ϒϩοΫνΣʔϯ͸޿͍෼໺ͷٕज़Ͱࢧ͑ΒΕ͍ͯΔ ※͜͜·Ͱ঺հٕͨ͠ज़͸
 ɹ͢΂ͯͷϒϩοΫνΣʔϯͰ׆༻͞Ε͍ͯΔͱ͍͏Θ͚Ͱ͸ͳ͍ɻ
 ɹϒϩοΫνΣʔϯͷઃܭ΍༻్ʹΑΓɺҟͳΔ৔߹͕͋Δɻ ϒϩοΫνΣʔϯΛࢧ͑Δٕज़
16. Agenda • ϒϩοΫνΣʔϯͷ֓ཁ • ϒϩοΫνΣʔϯͰ׆༂͢Δϓϩάϥϛϯάݴޠ • GoͰ࣮ݱ͢ΔϒϩοΫνΣʔϯٕज़
17. ϒϩοΫνΣʔϯྖҬͰϓϩάϥϛϯά͕ൃੜ͢Δ৔໘ • ϒϩοΫνΣʔϯࣗମͷ։ൃ • εϚʔτίϯτϥΫτ։ൃ • ϒϩοΫνΣʔϯͱ઀ଓ͢ΔΞϓϦ։ൃ ͦΕͧΕཁ͕݅มΘͬͯ͘ΔͨΊ׆༂͢Δݴޠ΋ҟͳΔ ࠓճ͸ϒϩοΫνΣʔϯࣗମͷ։ൃʹϑΥʔΧε ϒϩοΫνΣʔϯྖҬͰ׆༂͢Δϓϩάϥϛϯάݴޠ
18. ϒϩοΫνΣʔϯͷTLV(ϩοΫ͞Ε͍ͯΔ҉߸ࢿ࢈ͷֹ)ʹΑΔϥϯΩϯά ϒϩοΫνΣʔϯࣗମͷ։ൃݴޠ ॱҐ νΣʔϯ ϝΠϯݴޠ ॱҐ νΣʔϯ ϝΠϯݴޠ 1 Ethereum 11 Fantom 2 Tron 12 Cronos 3 BSC 13 DefiChain 4 Arbitrum 14 Klaytn 5 Polygon 15 Bitcoin 6 Optimism 16 Parallel 7 Avalanche 17 Acala 8 Solana 18 Fusion 9 Mixin 19 Algorand 10 Kava 20 Osmosis CoinMarketCap “Largest Blockchains in Crypto Ranked by TVL” ΑΓҾ༻ https://coinmarketcap.com/ja/chain-ranking/ (2023/05/16)
19. CoinMarketCap “Largest Blockchains in Crypto Ranked by TVL” ΑΓҾ༻ https://coinmarketcap.com/ja/chain-ranking/ (2023/05/16) ϒϩοΫνΣʔϯͷTLV(ϩοΫ͞Ε͍ͯΔ҉߸ࢿ࢈ͷֹ)ʹΑΔϥϯΩϯά ϒϩοΫνΣʔϯࣗମͷ։ൃݴޠ ॱҐ νΣʔϯ ϝΠϯݴޠ ॱҐ νΣʔϯ ϝΠϯݴޠ 1 Ethereum Go 11 Fantom Go 2 Tron Java 12 Cronos Go 3 BSC Go 13 DefiChain C++ 4 Arbitrum Go 14 Klaytn Go 5 Polygon Go 15 Bitcoin C++ 6 Optimism Go 16 Parallel Rust 7 Avalanche Go 17 Acala Rust 8 Solana Rust 18 Fusion C++ 9 Mixin Go 19 Algorand C, Go 10 Kava Go 20 Osmosis Go
20. • EthereumͷϝΠϯͷ։ൃݴޠʹબ͹Εͨ͜ͱ͕ىҼ͍ͯ͠Δ • Ethereum͸εϚʔτίϯτϥΫτΛ
 ॳΊͯϒϩοΫνΣʔϯʹ૊ΈࠐΜͩࣄྫ • Ethereumͷ࠷ॳͷΫϥΠΞϯτ࣮૷ͷ1ͭͰ Go ͕બ͹Εͨ • go-ethereum ͸ Ethereum ωοτϫʔΫͷ
 80%Ҏ্ͷϊʔυͰར༻͞Ε͍ͯΔ • ࠷΋࢖ΘΕςετ͞ΕͨΫϥΠΞϯτͱͯ͠ɺ
 ଟ͘ͷνΣʔϯͷࢀߟ࣮૷ʹͳ͍ͬͯΔ Go͕ϒϩοΫνΣʔϯࣗମͷ։ൃʹ࢖ΘΕ͖ͯͨཧ༝
21. ϒϩοΫνΣʔϯ։ൃͷཁٻʹԠ͑Δݴޠͩͬͨ • ίϯύΠϧݴޠͰɺ࣮ߦ଎౓͕଎͍ • ฒྻॲཧͷੑೳ͕ߴ͘ɺ࣮૷αϙʔτ͕ڧྗ ◦ ෼ࢄγεςϜͱ਌࿨ੑ͕ߴ͍ • ϝϞϦ҆શੑ͕ߴ͘ɺݎ࿚ੑͷߴ͍ίʔυΛҡ࣋Ͱ͖Δ ◦ ۚ༥ϓϥοτϑΥʔϜͷͨΊݎ࿚ੑ͸ॏཁ • ඪ४ͷ҉߸ϥΠϒϥϦ͕ॆ࣮ Ethereumͷ։ൃʹGo͕࢖ΘΕ͖ͯͨཧ༝
22. Ethereumͷ։ൃʹGo͕࢖ΘΕ͖ͯͨཧ༝ • Rust΋ϒϩοΫνΣʔϯ։ൃͷཁٻʹԠ͑Δݴޠ͕ͩɺ
 ։ൃ։࢝࣌఺Ͱ͸Rustͷਖ਼ࣜϦϦʔε͕·ͩͩͬͨ ◦ ։ൃ͕࢝·ͬͨͷ͕2013-14͋ͨΓ(init commit ͕ 2013-12-26) ◦ Go͸v1.2͕ϦϦʔε͞Ε͍ͯͨ ◦ Rustͷv1ϦϦʔε͸ 2015/05/15 • ࣮ࡍʹ৽ڵνΣʔϯͰ
 Rust͕ϝΠϯͷ։ൃʹ࢖ΘΕΔγʔϯ͸૿͍͑ͯΔ
23. • Ethereumޓ׵ͷνΣʔϯͳͲɺEthereumࢿݯ͕༗ޮ׆༻Ͱ͖Δ৔߹ ◦ Rust΋EthereumΫϥΠΞϯτ͕࣮૷͞ΕͨΓͳͲͰɺࢿݯ͕ཷ·Γͭͭ͋Δ • ։ൃݴޠͷֶशίετΛ௿͍ͨ͘͠৔߹ • ݴޠͰύϑΥʔϚϯεΛγϏΞʹಥ͖٧Ίͳͯ͘ྑ͍৔߹ ͳͲ͕౰ͯ͸·Δ৔߹͸GoΛ࢖͏ϝϦοτ͕େ͖͍ ϒϩοΫνΣʔϯ͸ωοτϫʔΫͷ݈શੑͷͨΊʹɺ
 ΫϥΠΞϯτ࣮૷ͷଟ༷ੑ͕ॏཁࢹ͞Ε͍ͯΔ ଟ༷ͳݴޠͷΤίγεςϜͷ੒௕͕ඞཁʹͳΔ ࠓޙ΋Go͸࢖ΘΕଓ͚Δͷ͔
24. Agenda • ϒϩοΫνΣʔϯͷ֓ཁ • ϒϩοΫνΣʔϯͰ׆༂͢Δϓϩάϥϛϯάݴޠ • GoͰ࣮ݱ͢ΔϒϩοΫνΣʔϯٕज़
25. ΄ͱΜͲͷ৔໘Ͱɺར༻࣮੷ͷଟ͍ϥΠϒϥϦ͕ར༻͞Ε͍ͯΔ
 ʢϓϦίϯύΠϧυίϯτϥΫτͷ҉߸Խؔ਺ͳͲɺҰ෦ಠࣗʹ࣮૷͞Ε͍ͯΔ΋ͷ ΋͋Δʣ • ඪ४ύοέʔδ crypto • ४ඪ४ύοέʔδ golang.org/x/crypto • BitcoinͷGo࣮૷ύοέʔδ btcsuite/btcd, bitcoin-core/secp256k1 ࣮੷ͷ͋ΔϥΠϒϥϦΛ࠶ར༻͢Δ͜ͱͰɺ
 ҆શੑ΍ੑೳͱɺ։ൃ༰қੑΛཱ͍྆ͯ͠Δ ࣮ࡍʹͲͷΑ͏ʹGo͕࢖ΘΕ͍ͯΔͷ͔
 ҉߸ٕज़ͷ࣮ݱํ๏ ৄࡉ͸ͪ͜Βˠ
26. Goͷ۩ମతͳ࢖ΘΕํ
 ౬ਫͷΑ͏ʹ࢖ΘΕΔgoroutine go-ethereumͰ͸ɺGoͷΰϧʔνϯͱνϟωϧ͕๛෋ʹ࢖ΘΕ͍ͯΔ ֤छΠϕϯτΛ chan Ͱఆٛ͠ɺfor, select Λ࢖ͬͯΠϕϯτϋϯυϥΛ࣮ݱ ͜ͷύλʔϯ͕࢖ΘΕ͍ͯΔՕॴ • P2Pαʔόʔ
 https://github.com/ethereum/go-ethereum/blob/v1.11.6/p2p/server.go#L705 • Transactionͷϓʔϧ
 https://github.com/ethereum/go-ethereum/blob/v1.11.6/core/txpool/txpool.go#L349 • ϚΠχϯάϫʔΧʔ
 https://github.com/ethereum/go-ethereum/blob/v1.11.6/miner/worker.go 

27. sync ύοέʔδͷػೳ΋ଟ༻ ྫɿϒϩοΫϋογϡͷಋग़ʹར༻͢Δϋογϡؔ਺ͷϩδοΫ • x/crypto/sha3 ͷ NewLegacyKeccak256() Λ࢖͍ͬͯΔ • sync.Pool Ͱ buffer Λ
 Ωϟογϡ͠
 ࠶ར༻͢Δ͜ͱͰɺ
 GC΁ͷෛ୲Λܰݮ͍ͯ͠Δ Goͷ۩ମతͳ࢖ΘΕํ
 ౬ਫͷΑ͏ʹ࢖ΘΕΔgoroutine https://github.com/ethereum/go-ethereum/blob/v1.11.6/cmd/geth/main.go#L331-L346
28. ϒϩοΫνΣʔϯͷσʔλߏ଄͸core/ blockchain.go ʹ࣮૷͞Ε͍ͯΔ https://github.com/ethereum/go-ethereum/blob/v1.11.6/core/ blockchain.go#L168-L227 ҎԼΛfieldʹॴ࣋ • ࣮ମΛอଘ͢Δσʔλϕʔε • ֤छΩϟογϡ • ϒϩοΫͷݕূʹඞཁͳม਺ Goͷ۩ମతͳ࢖ΘΕํ
 ϒϩοΫνΣʔϯͷσʔλߏ଄
29. Goͷ۩ମతͳ࢖ΘΕํ
 ϒϩοΫνΣʔϯͷσʔλߏ଄ σʔλʹॊೈʹΞΫηεͰ͖ΔΑ͏ʹϝιου܈͕༻ҙ͞Ε͍ͯΔ ྫ: GetBlockByHash ϒϩοΫϋογϡΛ౉͢͜ͱͰϒϩοΫͷ಺༰ΛऔಘͰ͖Δ https://github.com/ethereum/go-ethereum/blob/v1.11.6/core/blockchain_reader.go#L174
30. Blockͷܕ https://github.com/ethereum/go-ethereum/blob/v1.11.6/core/types/ block.go#L175 Goͷ۩ମతͳ࢖ΘΕํ
 ϒϩοΫνΣʔϯͷσʔλߏ଄
31. ϒϩοΫϔομʔͷΞυϨεͷΩϟογϡʹ Go1.19~ ʹ௥Ճ͞Εͨsync/ atomic.Pointer (ඪ४ύοέʔδॳͷgenerics) ͕ར༻͞Ε͍ͯΔ Goͷ۩ମతͳ࢖ΘΕํ
 ϒϩοΫνΣʔϯͷσʔλߏ଄ ෳࡶͳσʔλͷΩϟογϡʹ͸ɺ 
 genericsΛ࢖ͬͯಠ࣮ࣗ૷ͨ͠ Key-value store Λ׆༻
32. ଞʹ΋͓΋͠Ζ࣮૷͕ͨ͘͞Μ͋Δ • P2PͰͷऔҾɾϒϩοΫͷ௨৴खஈ • ίϯηϯαεΞϧΰϦζϜ • εϚʔτίϯτϥΫτͷϥϯλΠϜͷ࣮૷ Goͷ۩ମతͳ࢖ΘΕํ
33. • ϊʔυ࣮ߦίϚϯυͷΤϯτϦϙΠϯτ͸cmd/geth/main.go ◦ cliϥΠϒϥϦͱͯ͠ urfave/cli Λར༻͍ͯ͠Δ ◦ https://github.com/ethereum/go-ethereum/blob/v1.11.6/cmd/geth/main.go#L331-L346 Goͷ۩ମతͳ࢖ΘΕํ
 go-ethereumͷίʔυͷḷΓํ
34. • prysmaticlabs/prysm ◦ EthereumͷίϯηϯαεΫϥΠΞϯτͷGo࣮૷ ◦ Ethereum͸go-ethereumͷ֎ͰϒϩοΫੜ੒ͷίϯηϯαεΛܗ੒͍ͯ͠Δ • 0xPolygonHermez/zkevm-node ◦ zkEVMͷGoͷϊʔυ࣮૷ ◦ θϩ஌ࣝূ໌Λ࢖ͬͯEthereumͷ֎෦ͰτϥϯβΫγϣϯΛॲཧ͢ΔϨΠϠʔ2νΣʔϯ • cosmos/cosmos-sdk ◦ ϒϩοΫνΣʔϯΛߏங͢ΔͨΊͷϞδϡϥʔϑϨʔϜϫʔΫ ◦ GoݴޠͰϒϩοΫνΣʔϯΞϓϦέʔγϣϯΛ؆୯ʹߏஙͰ͖Δ • ava-labs/avalanchego ◦ AvalancheνΣʔϯͷGoͷϊʔυ࣮૷ ◦ Avalanche subnetͱݺ͹ΕΔɺෳ਺ͷϒϩοΫνΣʔϯΛ࿈ܞͤͯ͞
 ૬ޓӡ༻ੑʢΠϯλʔΦϖϥϏϦςΟʣΛ୲อ͢Δ࢓૊Έ͕͋Δ Goͷ۩ମతͳ࢖ΘΕํ
 ͦͷଞίʔυϦʔσΟϯά͕໘നͦ͏ͳrepository
35. ࠷ޙʹ • 6݄15೔(໦) 19:00͔Βɺ
 ʰϚωʔϑΥϫʔυʱʰΧϯϜʱ
 ʰϛϥςΟϒʱʰφϨοδϫʔΫʱ
 ͷ4ࣾʹΑΔGoಉษڧձΛ։࠵༧ఆ
 On Thursday, June 15th at 7:00 PM, there will be a Go study group held by four companies: Money Forward, Kamu, Mirrativ, and Knowledge Work. • ඇެࣜAfter Partyͱͯ͠ɺ
 ֤ࣾͷΤϯδχΞ͕LTͱ
 Go Conferenceײ૝ઓΛ࣮ࢪ
 As an unofficial after party, engineers from each company will hold an LT and a discussion on the Go Conference.
36. • Ethereum։ൃυΩϡϝϯτ
 https://ethereum.org/ja/developers/docs/ • Ethereum EVM illustrated
 https://takenobu-hs.github.io/downloads/ethereum_evm_illustrated.pdf • Bitcoin white paper
 https://bitcoin.org/bitcoin.pdf • Total Value Locked (TVL) Definition (coinmarketcap)
 https://coinmarketcap.com/alexandria/glossary/total-value-locked-tvl • ͨͩͷ෼ࢄDBͱԿ͕ҧ͏ʁ࠷લઢΤϯδχΞ͕ޠΔBlockchainͷ࣮༻Մೳੑ
 https://www.youtube.com/watch?v=UQUfpUPz9Ic Gopher Illustrations ©tottie / Renée French ࢀߟจݙ