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0x Protocol @1VQ9 and Whitney 2018/10/21 @ BlockChainJAM 2018

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http://bit.do/0xjp

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YQSPUPDPMΛ࢖༻͢ΔE"QQT։ൃऀͷίϛϡχςΟ YQSPUPDPMͷٕज़తͳϊ΢ϋ΢ͷ஝ੵɺڞ༗ ΨόφϯεϞσϧ΍ؔ࿈ϓϩδΣΫτͳͲʹؔ͢Δ৘ใͷڞ༗ dϲ݄ʹճఔ౓ͷษڧձ 0x Community Japan (TBD) http://bit.do/0xjp

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World in which all forms of value are tokenized on public blockchains ༷ʑͳܗͷՁ஋͕ύϒϦοΫɾνΣʔϯ্ͰτʔΫϯԽ͞Εͨੈք ௨՟ ैདྷͷࢿ࢈ σδλϧͳ঎඼ Currency Traditional Assets Digital Goods

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! " # $ ! શͯͷਓ͕ࣗ༝ʹ࢖͏͜ͱ͕Ͱ͖Δɺޮ཰తͰɺಁ໌ੑͷ୲อ͞Εͨ ۚ༥ΠϯϑϥετϥΫνϟ͕ඞཁ ! ! % " & ! !

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' ! ! ! ! ! ! ! !

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' ! ! ! ! ! ! ! ! With centralized exchange, users has to give control of their assets to trusted third party தԝूݖతͳऔҾॴͰ͸ɺऔҾΛߦ͏ࡍʹɺ৴ པ͞Εͨୈࡾऀʹࢿ࢈Λ༬͚Δඞཁ͕͋Δ

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2014/2 2016/4 2016/8 2018/1 2018/9 2018/7 2017/7 Hacked Seized

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' ! ! ( Trusted third party can be a risk of privacy ৴པ͞Εͨୈࡾऀ͕ϓϥΠόγʔͷϦεΫͱͳΔՄೳੑ͕ଘࡏ͢Δ

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“Create a tokenized world where all value can flow freely.” zશͯͷՁ஋͕ࣗ༝ʹߦ͖དྷ͢ΔɺτʔΫϯԽ͞ΕͨੈքΛ࡞Δz 0xͷϛογϣϯ 0x Mission Statement

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୭Ͱ΋ࣗ༝ʹ࢖͑ΔɺτϥετϨεʹτʔΫϯΛަ׵͢Δ͢ΔͨΊͷϓϩτί ϧɻ෼ࢄऔҾॴͰ͸ͳ͍ɻ εϚʔτίϯτϥΫτͷηοτͱͯ͠࡞ΒΕ͓ͯΓɺ։ൃऀ͸ϓϩτίϧΛར ༻ͯ͠ɺ&3$τʔΫϯͷऔҾॴ΍ϚʔέοτϓϨΠεΛ։ൃͰ͖Δɻ ΢ΥϨοτ͔Β΢ΥϨοτ΁ɺ௚઀औҾ͢Δ͜ͱ͕Մೳɻ YQSPUPDPMΛ࢖༻͢Δ෼ࢄऔҾॴಉ࢜ͰɺྲྀಈੑΛڞ༗Մೳɻ 7FSTJPO͕ʹϦϦʔε͞Εɺ7FSTJPO͕ʹϦϦʔε͞Εͨɻ 0x protocol: τϥετϨεͳτʔΫϯަ׵ͷͨΊͷΦʔϓϯͳϓϩτίϧ

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! Maker ! Taker Exchange contract ) )

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! Maker ! Taker Exchange contract makerAddress 0x000… makerAssetData ZRX makerAssetAmount 237 takerAddress 0x000… takerAssetData WETH takerAssetAmount 1 Order Object (JSON) ! ϝΠΧʔ͸஫จ಺༰Λهࡌͨ͠0SEFSΦϒδΣΫτΛ࡞੒͠ɺ ॺ໊͢Δ Maker creates order object and sign it ) )

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! Maker ! Taker Exchange contract Signed Order Object (JSON) * ϝΠΧʔ͸ॺ໊ࡁ0SEFSΦϒδΣΫτΛ5BLFSͱڞ༗͢Δ ) ) Maker shares signed Order object with Taker

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! Maker ! Taker Exchange contract Signed Order Object (JSON) * ςΠΧʔ͸਺ྔΛࢦఆͯ͠&YDIBOHFDPOUSBDUͷϝιουΛݺͼग़͢ ) ) Taker invoke method of Exchange contract with amount to fill

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! Maker ! Taker Exchange contract &YDIBOHFίϯτϥΫτ͕͓ޓ͍ͷ΢ΥϨοτͷؒͰτʔΫϯͷަ׵Λߦ͏ Exchange contract transfers tokens for each wallet directly ) ) ! 1 WETH 237 ZRX

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! ! τϥετϨεʹՁ஋Λަ׵͢ΔͨΊͷϓϩτίϧ Trust-less protocol for exchanging values ΦϑνΣʔϯͰ஫จΛϦϨʔ͠ɺΦϯνΣʔϯͰ໿ఆ Off-chain order relay, On-chain settlement

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ERC20 Token ERC721 Non Fungible Token 7FSTJPOͰ͸ɺ"TTFU1SPYZʹΑΓ &3$͚ͩͰͳ͘&3$ʹ΋ରԠͨ͠ɻ ରԠ͢Δࢿ࢈ͷछྨ͸ࠓޙ૿͍͑ͯ͘༧ఆ In version 2, protocol supports ERC721 not only ERC20. Supporting asset classes are going to increase.

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σϦόςΟϒ ϨϯσΟϯά τʔΫϯόεέοτ Derivative Lending Token Basket 0xϓϩτίϧ্ʹ࡞ΒΕ༷ͨʑͳϓϩτίϧ Protocols build on 0x protocol

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5SBEJOHXJEHFUʹΑͬͯɺ΢ΣϒΞϓϦɺE"QQTʹ؆୯ʹऔҾͷػೳΛ௥ՃՄೳʹ Trading widget will allow integrate trading feature to any web apps and dApps.

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ϦϨʔϠʔ Relayers

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! Maker ! Taker Exchange contract Signed Order Object (JSON) * ) ) Signed Order Object (JSON) * Order Object (JSON) ! 0SEFSΦϒδΣΫτͷ࡞੒΍໿ఆɺΦʔμʔϒοΫͷ؅ཧɺΠϯλʔϑΣʔεͷఏ ڙͳͲΛߦ͏ͷ͕ϦϨʔϠʔͷ໾ׂ Relayers maintains order book, provides user interface, creates order object and fill them

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4UBOEBSE3FMBZFS"1*ʹ४ڌ͢Δ͜ͱͰɺ3FMBZFSಉ͕࢜ྲྀಈੑΛڞ༗͢Δ͜ͱ͕Մೳ With Standard Relayer API, Relayers can share their liquidity pool ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Liquidity Pool ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Liquidity Pool Relayer B Relayer A Standard Relayer API

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10+ Relayers $612,483 24H Network volume* * 2018/10/18, https://0xtracker.com

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Network volume Fills https://0xtracker.com

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Network volume Fills https://0xtracker.com ϝΠϯωοτʹϦϦʔε Launched on Main net at 2017/10/9