APPS JAPAN 2019
ϒϩοΫνΣʔϯήʔϜͷݱঢ়ͱࠓޙdouble jump.tokyoגࣜձࣾຬ ྄
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͡ΊʹϒϩοΫνΣʔϯήʔϜࢢMy Crypto HeroesͷհϒϩοΫνΣʔϯήʔϜͰࠓͳʹ͕ى͖͍ͯΔͷ͔EthereumͷϝϦοτσϝϦοτݱࡏͷϒϩοΫνΣʔϯήʔϜγεςϜERC721ͱΤίγεςϜϒϩοΫνΣʔϯήʔϜͷະདྷ
ࣗݾհຬ ྄ ʢManzoku Ryoʣdouble jump.tokyo ϦʔυΤϯδχΞ2018/7݄ΑΓ Πϯϑϥઃܭӡ༻ɺαʔόαΠυ։ൃɺSmartContract։ൃɺϒϩοΫνΣʔϯٕज़ௐࠪͳͲΛ୲աڈʹιʔγϟϧήʔϜձࣾɺEdTechΞϓϦձࣾͰΠϯϑϥΤϯδχΞͱͯ͠AWSΛத৺ͱͨ͠ΫϥυΠϯϑϥ͔ΒΞϓϦ·ͰͷશମઃܭɺߏஙɺվળΛܦݧ
double jump.tokyoגࣜձࣾ20184݄ ۀϒϩοΫνΣʔϯήʔϜઐۀ։ൃձࣾMyCryptoHeroesͷ։ൃɺӡӦैۀһ15ਓʢۀҕୗΛؚΉʣ
ϒϩοΫνΣʔϯήʔϜࢢ
ϒϩοΫνΣʔϯήʔϜࢢ2017.11 CryptoKitties ϦϦʔε2017.12 Etheremon ϦϦʔε2018.06 ͘Γಲ ϦϦʔεʢຊൃʣ2018.11 MyCryptoHeroes ϦϦʔεʢຊൃʣ2019.06 CryptoSpells ϦϦʔε༧ఆ ʢຊൃʣ2019.xx xxxx
ϒϩοΫνΣʔϯήʔϜࢢCryptoKittiesͷϦϦʔεΛൽΓʹσδλϧΞηοτʹ͍ͭͯΓ্͕ΓΛݟ͍ͤͯΔNon-Fungible TokenʢNFTʣସੑͷͳ͍τʔΫϯͱ͍͏֓೦͕ੜΈग़͞Εɺͦͷ༷ͱͯ͠ERC721͕ࡦఆ͞Εͨ2018ޙ͔ΒɺຊൃͷϒϩοΫνΣʔϯήʔϜϦϦʔε͞Εͨ2020ʹ͔͚ͯɺ༷ʑͳήʔϜ͕ੜ·Εɺଟ͘ͷσϕϩούʔͷࢀೖ͕༧͞ΕΔ
ϒϩοΫνΣʔϯήʔϜࢢCryptoKittiesͷ࠷ߴམࡳֹ1300ສԁʢ2017.12 Ϩʔτ࣌ͷͷʣMyCryptoHeroes ϦϦʔε͔Β6ϲ݄Ͱ12,000ETHͷച্ʢ2019.5ʣF1 Delta Time͕415.9ETHͷԾϨʔγϯάΧʔΛൢചNFTऔҾॴͷOpenSeaͰ݄ؒ10,000ETH΄ͲͷΞηοτ͕ചങ͞Ε͍ͯΔ
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MyCryptoHeroesͱMy Crypto HeroesɺMCHɺϚΠΫϦ2018-11-30 ਖ਼ࣜαʔϏε։࢝EthereumΛར༻ͨ͠ϒϩοΫνΣʔϯήʔϜήʔϜࢿ࢈ (ERC721) EthereumʹͯཧήʔϜϩδοΫαʔόʹ࣮ͯߦ2019ॳʹɺϒϩοΫνΣʔϯήʔϜຊॳͷςϨϏCMΛ࣮ࢪ
MyCryptoHeroesͱήʔϜʹ͔͚͓ͨ࣌ؒۚɺ͋ͳͨͷࢿ࢈ͱͳΔੈքEthereumʹ͋ΔήʔϜࢿ࢈Ϣʔβʔ͕ࣗ༝ʹѻ͏͜ͱ͕Ͱ͖ΔήʔϜࢿ࢈Λҭ͢Δ͜ͱͰՁΛߴΊΔ͜ͱ͕ՄೳEthereumʹॴ༗ใΛ࣋ͯΔήʔϜࢿ࢈ͱͯ͠ɺύʔςΟʹฤͰ͖ΔHeroͱHero͕උ͢ΔExtensionɺήʔϜʹ͔ΕͨࠃՈͷLandSector͕͋Δ֤ήʔϜࢿ࢈SmartContractʹΑͬͯൃߦ্ݶ͕ఆΊΒΕ͍ͯΔ
MyCryptoHeroesͱ
MyCryptoHeroesͷήʔϜࢿ࢈Hero: ӡӦ͘͠ࢢ͔Βߪೖ͢ΔɻΫΤετPvPʹར༻͢ΔExtension: ΫΤετΫϦΞ࣌͘͠ࢢ͔Βߪೖ͢ΔɻHeroʹඋͤ͞ΫΤετPvPʹར༻͢ΔLandSector: ӡӦ͘͠ࢢ͔Βߪೖ͢ΔήʔϜࠃՈͷΦʔφʔɻ্ҐऀKingͱͳΓϢʔβʔΛಋ͘
࢜Ϟσϧ࢜PvPότϧʹࢀՃ͠ɺ໊ΛಘΔΫΤετΛΫϦΞ͠ܦݧɺExtensionΛ֫ಘͦ͠ͷചങΛߦ͏HeroΞʔτΛ࡞͠ൢചΛߦ͏ ໊ΛಘΔHero, ExtensionΛࢢ͔ΒೖΕൢചΛߦ͏
ָ͠ΈํਓͦΕͧΕ࢜ͱ͍͏ϞσϧΛϕʔεʹػೳΛ࡞͍ͯ͠ΔͷͷɺήʔϜʹ৬ۀͱ͍͏ύϥϝʔλଘࡏ͠ͳ͍ຽϝΠϯͰָ͠ΈͭͭɺPvPΠϕϯτʹࢀՃ͢Δਓҭͭͭ͠ɺചങΛ͢ΔਓΞʔτΛ࡞͠ɺൃදɺചങΛߦ͏ਓίϛϡχςΟ׆ಈΛָ͠ΉਓMCHΛʹࣗ༝ʹָ͠ΜͰ͍Δ
ϒϩοΫνΣʔϯήʔϜͰԿ͕ى͖͍ͯΔͷ͔
ϒϩοΫνΣʔϯήʔϜͰԿ͕ى͖͍ͯΔͷ͔https://youtu.be/BlohAtMu224
ϒϩοΫνΣʔϯήʔϜͰԿ͕ى͖͍ͯΔͷ͔Ϣʔβʔओ࠵ɺөըؗΛͬͨϦΞϧΠϕϯτ
ϒϩοΫνΣʔϯήʔϜͰԿ͕ى͖͍ͯΔͷ͔ΞΫςΟϒϢʔβʔܧଓ
ϒϩοΫνΣʔϯήʔϜͰԿ͕ى͖͍ͯΔͷ͔ڻҟతͳDAUܧଓ ʢ7daysͰ80%~90%ʣΛਪҠϢʔβʔͷڰɺྔϢʔβʔओ࠵ΠϕϯτɺΦϑձ͕։࠵ຖͷΑ͏ʹ։࠵͞ΕΔήʔϜΛͬͨϢʔβʔΠϕϯτઍਓͷϢʔβʔίϛϡχςΟ
ͳͥϒϩοΫνΣʔϯήʔϜʹڰ͢Δͷ͔ϒϩοΫνΣʔϯʹΑΔήʔϜࢿ࢈ͷॴ༗ࣗͷͷͰ͋Δͱ͍͏طଘήʔϜʹͳ͍ମݧήʔϜࢿ࢈ͷϢʔβʔؒৡϢʔβʔओ࠵ͷاըϓϨθϯτɺॳ৺ऀ༑ਓͷϓϨθϯτήʔϜࢿ࢈ͷՁσδλϧΞηοτऔҾॴʹΑΔࣗ༝ͳऔҾ
ͳͥϒϩοΫνΣʔϯήʔϜʹڰ͢Δͷ͔ैདྷͷήʔϜΞΠςϜఏڙऀ/ӡӦ͔Βফඅऀ/ϢʔβʔͷҰํతͳି༩Ͱ͋ͬͨϒϩοΫνΣʔϯήʔϜʹ͓͍ͯɺήʔϜΞΠςϜӡӦͱϢʔβʔڞ௨ͷࢿ࢈Ͱ͋ΓɺϢʔβʔεςʔΫϗϧμʔͰ͋ΔήʔϜࢿ࢈͕͋Δ͜ͱͰϢʔβʔӡӦɺϢʔβʔಉ࢜ͷ૬ޮՌ͕ੜ·ΕΔΤίγεςϜͱͦΕΛࢧ͑Δڧ͍ϢʔβʔίϛϡχςΟ
EthereumͷϝϦοτ/σϝϦοτ
EthereumͱϒϩοΫνΣʔϯٕज़Λར༻ͨ͠ࢄΞϓϦέʔγϣϯϓϥοτϑΥʔϜSmartContractʹҙͷಈ࡞ΛϓϩάϥϜ͢Δ͜ͱͰɺಠࣗ௨՟ͷൃߦථγεςϜͳͲͷ༷ʑͳΞϓϦέʔγϣϯ͕࣮ݱͰ͖ΔSmartContractSolidityͱ͍͏ݴޠͰهड़͠EthereumʹσϓϩΠ͢ΔϓϩάϥϜͷ࣮ߦʹखྉ͕͔͔ΓɺϚΠφʔͷใुͱͳΔ෦௨՟Ͱ͋Δether (ETH) ຊͰऔѻ͞Ε͍ͯΔ
ήʔϜࢿ࢈ͷՁΛܾΊΔͷMCHͰɺ֤ήʔϜࢿ࢈ʹ͓͚Δൃߦ্ݶΛܾΊ͍ͯΔHeroλΠϓ ৫ా৴10ମݶఆͰൢച͠ɺ9ମ͕ߪೖ͞Εͨɻ Ҏ߱ɺ9ମΑΓଟ͘ൃߦʹͰ͖ͳ͍Α͏SmartContractϓϩάϥϜ͜ΕʹΑΓɺࡍݶͳ͘ൃߦ͞Εͳ͍ͱ͍͏อূ͕͋ΔϒϩοΫνΣʔϯʹΑͬͯӡӦෆਖ਼͕Ͱ͖ͣɺϢʔβʔ͕҆৺Ͱ͖Δ
։ൃऀ͔ΒΈͨEthereumͷϝϦοτEthereumΛ͍ͬͯΔਓެ։伴҉߸Λඞͣར༻͍ͯ͠ΔͨΊɺEthereum Addressͱ͍͏ΞΧϯτͱެ։伴҉߸Λͬͨೝূػೳ͕ར༻Ͱ͖ΔɻύϒϦοΫϒϩοΫνΣʔϯͰ͋ΔEthereumʹ͓͚Δࢧ͍վ͟ΜࠔͰ͋Γɺܾࡁج൫ͱͯ͠ඇৗʹ৴པͰ͖ΔैདྷͷϓϥοτϑΥʔϜ͕୲͍ͬͯΔೝূͱܾࡁͷػೳ͕ඇৗʹίετͰར༻Ͱ͖Δ
ήʔϜ։ൃʹ͓͚ΔEthereumͷ՝ࢄ߹ҙͷΈΛ࣮ݱ͢ΔͨΊʹɺ1τϥϯβΫγϣϯ͕௨Δ·Ͱͷ͍࣌ؒɻEthereum 15ඵͰ1ϒϩοΫੜτϥϯβΫγϣϯ͝ͱʹखྉ͕͔͔Δɻෳࡶͳॲཧ΄Ͳଟ͘ͷखྉ͕ඞཁɻϒϩοΫʹؚΉ͜ͱͷͰ͖Δॲཧྔܾ·͍ͬͯΔͷͰݶք͕͋ΔɻήʔϜͷΑ͏ͳαʔϏεͰɺखྉɺॲཧɺUXͷ໘͔ΒEthereum্Ͱͯ͢ͷॲཧΛߦ͏ͷݱ࣮తͰͳ͍
ݱࡏͷϒϩοΫνΣʔϯήʔϜγεςϜ
ΦϯνΣʔϯͰ࣮ͯ͠ΈͨαΠυνΣʔϯٕज़Λ࠾༻͠ɺEthereumͱಉ͡SolidityΛͬͯήʔϜΛ࣮EthereumΑΓѹతʹ͍ϓϩδΣΫτͰ͋ͬͨɺɺ͕ɺ1ότϧΛ࣮ߦ͢Δͷʹ10ඵఔ͔͔Γɺͦͷؒଞͷॲཧ͕શͯϒϩοΫ͍ͯͨ͠සͷߴ͍SmartContractؒͰݺͼग़͕͋͠ΔͱϒϩοΫͯ͠͠·͏͜ΕطଘͷγϟʔσΟϯάٕज़Ͱղܾ͕͍͠ৄ͘͠ https://mch.gg/hicon2018
ΦϑνΣʔϯͱͷϋΠϒϦουͯ͢ΛϒϩοΫνΣʔϯ্Ͱ࣮ߦ͢Δͷݱ࣮తͰͳ͍ݱࡏͷEthereumͱϕʔεͱͨ͠ϒϩοΫνΣʔϯͰෳࡶͳॲཧෆՄೳϒϩοΫνΣʔϯήʔϜʹͱͬͯॏཁͳใͷΈΛϒϩοΫνΣʔϯͰཧ͠ɺͦΕҎ֎େʹΦϑνΣʔϯԽ͢Δ
ϒϩοΫνΣʔϯήʔϜʹͱͬͯԿ͕ॏཁ͔ͳʹ͕ॏཁ͔ɺͳʹΛϒϩοΫνΣʔϯͰཧ͖͔͢Ξηοτͷʮॴ༗ใʯETHΛܾͬͨࡁػೳΦϑνΣʔϯΞηοτΛ͏ͱͯ͠࡞ʮΞηοτத৺ͷઃܭʯ
My Crypto Heroesͷߏਤ&UIFSFVN6TFSήʔϜࢿ࢈ͷॴ༗ใϢʔβʔʹ͋Δॴ༗ใΛ֬ೝήʔϜࢿ࢈Λ༻͍ͯήʔϜͰ༡Ϳࢿ࢈ΛҭͯΔMyCryotoHeroesͰɾήʔϜࢿ࢈Λͬͨ༡ͼͷఏڙɾETHʹΑΓήʔϜ௨՟Λൢചɾ৽͍͠ήʔϜࢿ࢈ͷ༩ɺൢചɾήʔϜࢿ࢈ΞʔτΛ༩
ERC721ͱΤίγεςϜ
ERC721ͱCryptoKittiesνʔϜΛத৺ʹࡦఆ͞ΕͨEthereumͰར༻Ͱ͖ΔNon-Fungible TokenʢNFTʣͷ༷͓ΑͼΠϯλʔϑΣʔε௨՟Ͱͳ͘ήʔϜͷΞΠςϜͳͲɺସੑͷͳ͍ͷΛѻ͑ΔݘݘͰɺզ͕Ոͷϙνͱ͓ྡͷλϩସੑ͕ͳ͍ERC721ΠϯλʔϑΣʔεຬͨ͢͜ͱͰɺΦʔϓϯʹͦͷNFTΛར༻Ͱ͖ΔΑ͏ʹͳΔ
ΤίγεςϜERC721ͱ༷Λ௨ͯࣗ͠༝ʹར༻ՄೳERC721ରԠͷNFTऔҾॴͰ͋ΕՃରԠෆཁͰྲྀ௨ERC721Λར༻ͨ͠ήʔϜγεςϜͰར༻ɺද͕ࣔͰ͖ΔήʔϜ։ൃऀʹͱͬͯ͋ΔఔރΕͨERC721Λ࠾༻͢Δ͚ͩͰউखʹ·ͬͯ͘ΕΔ
ΞηοτऔҾॴΞηοτར༻ίϯςϯπ࡞ऀERC721ERC-721ΤίγεςϜ
ϒϩοΫνΣʔϯήʔϜͷະདྷ
TwitterͰϢʔβʔʹΞϯέʔτ
ࠓޙͲ͏ͳΔͷ͔҉߸ࢿ࢈ͷ֦͕Γͱͱʹࢢ֦େήʔϜͷϦονԽɺήʔϜੑͷڧԽɺ༗໊IPͷࢀೖ֬ఆ࿏ઢ͔͠͠ɺΞηοτΛ࣠ͱͨ͠ΤίγεςϜมΘΒͳ͍͜ΕطଘͷήʔϜ͔Β͢ͰʹมԽͯ͠͠·ͬͨͷϢʔβʔ͢ͰʹϒϩοΫνΣʔϯͷՁʹؾ͍͍ͮͯΔ
MCH HackathonΛ։࠵MCHͷήʔϜࢿ࢈Λྲྀ༻ͯ͠ɺϢʔβʔ͕ࣗ࡞Λ࡞ΔϋοΧιϯΛ։࠵ήʔϜࢿ࢈Λ༻ͨ͠ϛχήʔϜͳͲ͕࡞͞Εͨ
ࢦ͍ͯ͠ΔͷΞηοτͷ૬ޓར༻Λଅਐ͢ΔڰΛ͛ΔMCHͰഓͬͨϊϋΛΦʔϓϯԽ͍͖͍ͯͨ͠ύʔτφʔاۀʹϊϋΈΛఏڙ͍ͯ͠Δڝ߹Ͱͳ͘ಉ͡ϒϩοΫνΣʔϯήʔϜΛ͛Δؒͱͯ͠ڠྗ͍͖͍ͯͨ͠
RE-BUILDING THE FUTURE OF GAMINGWITH BLOCKCHAIN TECHNOLOGY
ิ: ϒϩοΫνΣʔϯͱ͋ΔΞΧϯτ͔Βͷ໋ྩʹެ։伴҉߸Λར༻ͨ͠ిࢠॺ໊Λ͚τϥϯβΫγϣϯΛ࡞͢ΔʮલϒϩοΫใʯͱʮෳͷτϥϯβΫγϣϯʯͱʮϥϯμϜͳʯͱΛ·ͱΊͯϒϩοΫͱ͢ΔϒϩοΫͷϋογϡ͕͋Δ݅ΛຬͨͤϒϩοΫੜ͞ΕɺੜऀʹΠϯηϯςΟϒ͕ൃੜ͢Δ݅Λຬͨ͢ʮϥϯμϜͳʯΛٻΊΔ͜ͱΛϚΠχϯάͱݺͿϒϩοΫʹඞͣʮલϒϩοΫใʯΛؚ·ͤΔ͜ͱͰνΣʔϯΛܗ͠ɺվ͟Μ͕ࠔͱ͢Δ͜ͱ͕Ͱ͖Δ
ิ: ϒϩοΫνΣʔϯͷछྨύϒϦοΫνΣʔϯ୭ͰࢀՃͰ͖ɺදͷͳ͍ωοτϫʔΫࢀՃऀͷ߹ҙʹΑͬͯํܾఆϓϥΠϕʔτνΣʔϯεέʔϥϏϦςΟΛಘΔͨΊকདྷͷύϒϦοΫԽΛఆͯ͠ߏங๏త؍ɺͦͦύϒϦοΫੑ͕ඞཁͳ͍ாͱͯ͠ར༻ίϯιʔγΞϜνΣʔϯ͋ΔఔͷࣄۀऀؒͰνΣʔϯΛߏஙՄ༻ੑվ͟ΜࠔͳརΛ׆͔͠ͳ͕ΒɺνΣʔϯͷํ߹ҙ༰қ
ิ: WalletϒϩοΫνΣʔϯʹΞΫηε͢ΔͨΊൿີ伴Λ࣋ͭཁૉΛWalletͱݺͿήʔϜσϕϩούʔήʔϜʹूதͰ͖Δ Walletͷ໘ݟͳͯ͘ྑ͍ϢʔβʔΥϨοτΛબΔ͖ΥϨοτΛแΛ͢ΔͷͰ͖ͳ͘ͳ͍͚ͲจԽʹ߹Θͳ͍ͱDJTߟ͍͑ͯΔ
ิ: WalletΞϓϦPCϒϥβ֦ு Metamask, DapperϞόΠϧΞϓϦ Trust, TokenPocket, GoWalletϞόΠϧϓϦΠϯ Samsung Galaxy S10, HTC ExodusϞόΠϧͱPC࿈ಈܕ Opera, Quragé