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供託の科学
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sgtn
February 14, 2019
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供託の科学
sgtn
February 14, 2019
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Transcript
ڙୗͷՊֶ Cryptoeconomics Lab - Sg ਓྨ͕౸ୡ͠͏Δڀۃͷڙୗ֓೦ʹ͚ͨཧղͱཧ
ϝϧΧϦ ΫϥυϫʔΫε ΩϟϯϓϑΝΠϠʔ ..031(ͷ11ΫΤετ ڞ௨߲Կ͔ʁ
551 5SVTUFE5IJSE1BSUZ ʹ ૹۚΩϟϯηϧͷ݅Λҕୗ͍ͯ͠Δ ڞ௨߲Կ͔ʁ
551 5SVTUFE5IJSE1BSUZ ʹ ૹۚΩϟϯηϧͷ݅Λҕୗ͍ͯ͠Δ ʴ ۜߦޱ࠲ʹސ٬ͷࢿຊΛ༬͔Γ ϙΠϯτΛൃߦ͍ͯ͠Δ ڞ௨߲Կ͔ʁ
551 5SVTUFE5IJSE1BSUZ ʹ ૹۚΩϟϯηϧͷ݅Λҕୗ͍ͯ͠Δ ʴ ۜߦޱ࠲ʹސ٬ͷࢿຊΛ༬͔Γ ϙΠϯτΛൃߦ͍ͯ͠Δ ڞ௨߲Կ͔ʁ ࢿܾۚࡁ๏ͱͷ݉Ͷ߹͍
ΤεΫϩʔ ސ٬ͷ͓ۚΛ҆શʹ͓༬͔Γ͢Δ
ΤεΫϩʔ ৫Ψόφϯεͱڙୗ͕ۚඞཁ
ΤεΫϩʔ ۚ༥ிͱͷΓͱΓ͕ඞཁ
ΤεΫϩʔ ≠ ༬͔Γ Ծઆ
ސ٬ͷຊԁΛϓϩάϥϚϒϧʹ ຊԁΛ1ສϊʔυͰࢄཧ ސ٬ͷҙࢤͰ͍ͭͰग़ۚͰ͖Δ TTPཧݖΛ࣋ͨͳ͍
ސ٬ࢿ࢈Λ༬͔Βͳ͍ΤεΫϩʔٕज़ ن੍͖͢ରͳͷͩΖ͏͔ʁ ͍
ٕज़ৄࡉ
Plasma Off-chain Transaction Verfication Protocol ΦϑνΣʔϯॲཧͷݕূϓϩτίϧ ຊԁεςʔϒϧίΠϯར༻Մ →ERC-20τʔΫϯ͕ຊԁͱಉ͡ՁʹͳΔΑ͏ʹཧ͞Ε͍ͯΔτʔΫϯɻΧε τσΟ͕ཧ͢ΔͷͱɺΞϧΰϦζϜ͕ཧ͢Δͷ͕͋Δɻ ΥϨοτͱൿີ伴ΞϓϦ/ϒϥβຒΊࠐΈܕΛఆ
→ϒϥβΤΫεςϯγϣϯಠཱΥϨοτෆཁɻۜߦޱ࠲͔ΒೖۚՄͳΧ ετσΟܕεςʔϒϧίΠϯͷΛఆɻ τϥϯβΫγϣϯϩδοΫͱखྉӡӦ͕ࢦఆՄೳ →ޙड़͢Δଟ࠼ͳ࣮͕Մೳ
Plasma ӡӦʹࢿ࢈ཧݖͳ͠ →ೖۚ͞Εͨࢿ࢈ΛӡӦؔऀޱ࠲ʹڧ੍Ҡಈͤ͞Δ͜ͱෆՄ γεςϜఀࢭ࣌ࢿ࢈Ethereum্ʹඞͣୀආՄೳ →ӡӦαʔόʔͷԠԿʹґଘͤͣɺEthereumͷͱͯ͠ࢿ࢈ཧΛߦ͑Δ ࢿ࢈อશੑ100% →্هઃܭʹΑΓɺͲΕ΄Ͳ৴༻ͳΒͳ͍ӡӦऀʹࢿ࢈Λ༬͚Δ͜ͱ͕Ͱ͖Δ ӡӦγεςϜఀࢭ࣌ͷػձଛࣦʹͷΈΛ࣋ͭ
→γεςϜఀࢭ͔ΒEthereumͷग़ྃ·ͰʹɺࣗಈݕূͷͨΊͷग़ۚͪ࣌ ͕ؒ1िؒඞཁʹͳΔɻ͜ͷࢿ࢈ϩοΫͷػձଛࣦ͚͕ͩӡӦʹՄೳͳނҙͷμ ϝʔδͰ͋Δɻ
ചΓख ങ͍ख ӡӦ ϝϧΧϦ࣮ બࢶ - ചΓखͷ͕ಧ͍ͨΒڐՄ - ฆ૪͕ى͖ͨΒฦۚ
ऀ ґཔऀ ӡӦ ΫϥυϫʔΫε࣮ બࢶ - ചΓखͷͷྃʹԠͯ͡ҌͰૹۚ - ෆཤߦ͕ى͖ͨΒฦۚ
ىۀՈ ࢿՈ ӡӦ ΩϟϯϓϑΝΠϠʔ࣮ બࢶ - ϑΝϯσΟϯάޭ࣌ʹૹۚ - ϑΝϯσΟϯάࣦഊ࣌ʹϦϑΝϯυ ࢿՈ
ࢿՈ ࢿՈ ࢿՈ ࢿՈ ࢿՈ
ґཔऀ ݥऀ ӡӦ MMORPG P2PΫΤετ࣮ બࢶ - ΫΤετޭ࣌ʹૹۚ - ΫΤετࣦഊ࣌ʹϦϑΝϯυ
ݥऀ ݥऀ ݥऀ ݥऀ ݥऀ ݥऀ
߈ܸϕΫλʔͱରࡦ ӡӦ͕ࢿ࢈ϩοΫ͍ͯ͠Δؒʹαʔόʔ͕ఀࢭͨ͠Βʁ →ӡӦαʔόʔΛܦ༝ͤͣEthereumνΣʔϯʹग़͠ͳ ͕Βฦۚঢ়ଶʹ͢ΔίϯτϥΫτ͕࡞ΕɺӡӦ͕ͦΕΛ උ͍ͯ͠Δ͜ͱΛඞਢ݅ͱ͢Δ ࢿ࢈ϩοΫ͍ͯ͠ΔτϥϯβΫγϣϯ͕ӬԕʹԠ͠ͳ͔ͬ ͨΒʁ →༬͔ΓͷλΠϜΞτΛઃఆ͍ͯ͠Δ࣮ͷΈ͕҆શͳ ΤεΫϩʔͰ͋Δͱ͍͏͜ͱ͕ɺੈʹೝ͞Ε͍ͯΔ͖
ੑೳͱར༻ྉ Ͳͷ͘Β͍ͷͰܾࡁΛࡹ͚Δͷʁ → ಉܾ࣌ࡁͱ͍͏ҙຯͰ2^40ݸͷτϥϯβΫγϣϯ ͕ಉ࣌ʹདྷ༷ͯͷৼΔ͍Ͱ͋Δɻ͔͠͠ಉ͡ਓ ͕ඵִؒͰܾࡁΛߦ͏ॲཧݪଇతʹෆཁͳͷͰې͡ Δ͜ͱͰੑೳΛ୲อ͍ͯ͠Δɻ Ͳͷ͘Β͍ͷֹۚΛѻ͑Δͷʁ → 2^40ݸͷശʹೖۚΛड͚ೖΕΔ͜ͱ͕Ͱ͖ɺ̍ೖۚ
1000ԁͱݟੵͬͯ1100ஹԁѻ͑Δ
ੑೳͱར༻ྉ ྲྀ௨ֹ͕ۚ૿͑Δ͝ͱʹෆਖ਼ϦεΫ͕ߴ·ΔͷͰͳ͍͔ʁ ˠPlasmaͱ͍͏αΠυνΣʔϯɺଞͷͲͷ࣮ΑΓ ਆܦ࣭ʹɺͦͷنൺྫͷϦεΫΛθϩԽ͢ΔͨΊʹઃ ܭ͞Ε͍ͯΔɻ ηΩϡϦςΟʹؾΛݣͬͯઃܭͨ͠ͳΒμϯαΠυ͕͋ ΔͷͰͳ͍͔ʁ →ࢿۚҾ͖ग़͠ͷͨΊͷͪ࣌ؒʢྫ͑1ϲ݄ʣͱಉ͡ සͰɺWebʹheartbeat৴߸ΛૹΒͳ͍ͱ͍͚ͳ͍ɻ͠ ͔͠SFW(Simple
Fast Withdrawal)ͱ͍͏ΤϯυϢʔ βʔ͕खྉΛ͏ܗͷଈ࣌Ҿ͖ग़࣮͕͋͠Δɻ
ੑೳͱར༻ྉ ͜ͷΤεΫϩʔαʔϏεΛ༻͢Δʹ͋ͨͬͯͷྉۚମܥ ʁ →ΦʔϓϯιʔεͰར༻͢ΔݶΓࣗલͷαʔόʔͱࣗ લͷΨε͕ඞཁͰ͋Γɺ݄ʹඦສԁ͔͔Δɻʮαʔ όʔɾೝূ(commit)ɾϑΝΠφϦςΟʯͷ̏Ϟδϡʔϧ ʹผΕͨΫϥυαʔϏε͕ଘࡏ͠ɺ͖ͳ෦ΛCEL ʹҕୗͰ͖Δɻ·ͨɺΫϥυαʔϏεΛ༻͍ͨ΄͏͕ ίετѹॖޮՌΛड͚ΒΕɻ݄ʹ10~20ສԁఔͷίετ ·ͰԼ͛ΒΕΔɻ