Bitcoinナカモト論文補足資料

https://cryptocurrency.connpass.com/event/262938/
ビットコインとか勉強会#70《Bitcoinナカモト論文》【暗号通貨読書会#46】 の補足資料です。

Transcript

1. #JUDPJOφΧϞτ࿦จิ଍ࢿྉ
   ೥݄೔ ۚ
   !ϏοτίΠϯͱ͔ษڧձ
   খᔹप 4IV,PCVDIJ
   
   

   View Slide

2. খᔹपɹ4IV,PCVDIJɹ!TIV@LPCTIVLPCVDIJ
   γεςϜ։ൃΛ͖ͯͨ͠தͰɺ
   

   ೥࢓ࣄͰ#JUDPJO8FC8BMMFUϓϩτλΠϓͷ։ൃʹैࣄ
   ʙϑϨηοπʹͯԾ૝௨՟औҾॴ޲͚΢ΥϨοτͷ։ൃɾӡ༻
   ʙ҉߸ࢿ࢈ަ׵ۀऀϏοτόϯΫͷϒϩοΫνΣʔϯΤϯδχΞ
   ೔ຊ҉߸௨՟Ϣʔβձ͸೥͔ΒࢀՃ͠ɺӡӦΛ຿ΊΔ
   झຯɿα΢φɺమಓɺञɺΧϥΦέ
   ࠷ۙϋϚ͍ͬͯΔ΋ͷɿδϜͷελδΦϨοεϯɺח૔఼ͷਓ
   ࣗݾ঺հ
   2
   

   View Slide

3. ίϛϡχςΟ঺հ
   ೔ຊ҉߸௨՟ϢʔβձɹIUUQTDSZQUPDVSSFODZDPOOQBTTDPN
   ʮϏοτίΠϯͱ͔ษڧձʯʢ݄̍ճɿฏ೔໷ʣ
   w ࣍ճ݄ௐ੔த
   ʮ҉߸௨՟ಡॻձʯʢ݄̍ճɿฏ೔໷ʣ
   w ෆఆظ։࠵
   ొஃऀืूத
   w ԠืϑΥʔϜ͸ͪ͜Β͔Β㱺IUUQTUDP3$G:,MN5Q
   :PV5VCFͰΞʔΧΠϒࢹௌՄೳIUUQCJUMZZPVUVCFDDTUVEZ
   w νϟϯωϧొ࿥͓ئ͍͠·͢
   3
   

   View Slide

4. ษڧձͰ࢖༻͢Δจݙ
   φΧϞτ࿦จ೔ຊޠ༁
   IUUQTCJUDPJOPSH
   fi
   MFTCJUDPJOQBQFSCJUDPJO@KQQEG
   ϏοτίΠϯ࿦จ͔Β͙͞ΔϒϩοΫνΣʔϯͷώϯτ
   IUUQTXXXPHJTSJDPKQPUDIJSPCBUFDIOJDBMCJUDPJOQBQFS
   ͜ΕΒ͸ΠϕϯτϖʔδʹϦϯΫΛష͍ͬͯ·͢
   IUUQTDSZQUPDVSSFODZDPOOQBTTDPNFWFOU
   4
   

   View Slide

5. φΧϞτ࿦จʹ͍ͭͯ
   IUUQTCJUDPJOPSHCJUDPJOQEG
   ೥݄೔65$4BUPTIJ/BLBNPUPΛ໊৐Δਓ෺͕ʮ#JUDPJO"1FFSUP1FFS&MFDUSPOJD$BTI4ZTUFNʯ
   

   ͱ͍͏λΠτϧͷ8IJUF1BQFSΛϝʔϦϯάϦετʹ౤ߘ
   ϏοτίΠϯͷػೳʹ͍ͭͯ͸ॻ͍͓ͯΒͣɺCMPDLDIBJOͱ͍͏୯ޠ΋ొ৔͠ͳ͍
   ʮ෼ࢄωοτϫʔΫͰೋॏࢧ෷͍Λ๷͙࢓૊ΈʯͷఏҊ
   5
   

   View Slide

6. "CTUSBDU
   "CTUSBDU
   શମͷཁ໿ͳͷͰɺ࠷ॳʹ"CTUSBDUΛಡΉͷ͸೉͍͠ʢ࠷ޙʹಡΉͷ͕Α͍ʣ
   *OUSPEVDUJPO
   ίϯϐϡʔλ্Ͱ͸σʔλͷෳ੡͸༰қ
   ίΠϯͷೋॏ࢖༻ʢଟॏ࢖༻ʣΛ๷͙࢓૊Έ͕ඞཁ
   ʮOPOSFWFSTJCMFʯෆՄٯɿ୭ʹ΋ૹۚΛअຐ͞Εͳ͍࢓૊Έ
   6
   

   View Slide

7. ೋॏࢧ෷͍໰୊
   ΞϦε͸Ωϟϩϧ͔Β΋Βͬͨ#5$ΛϘϒʹ΋ૹΓɺΤϨϯʹ΋ૹͬͨͱ͢Δʢೋॏࢧ෷͍Λͨ͠ʣ
   ͲͪΒͷτϥϯβΫγϣϯΛਖ਼౰ͱݟͳ͔͢
   ؅ཧऀ͕͍Ε͹؅ཧऀͷϊʔυʹಧ͍ͨઌணॱͰܾΊΕ͹ྑ͍
   ͔͠͠ɺ؅ཧऀͷ͍ͳ͍෼ࢄωοτϫʔΫͰ͜ͷରࡦΛ͠ͳ͚Ε͹ͳΒͳ
   11ωοτϫʔΫ্Ͱઌணॱͷ൑ఆ͸ෆՄೳ
   7
   ΞϦε
   Ϙϒ
   59
   5PϘϒ
   59
   5PΤϨϯ
   Ωϟϩϧ
   ΤϨϯ
   #5$
   #5$
   #5$
   ೋॏࢧ෷͍
   Ϙϒ
   ΤϨϯ
   

   View Slide

8. ϋογϡؔ਺
   Մม௕ͷೖྗ஋ʹର͠ɺݻఆ௕ͷग़ྗ஋Λฦ͢
   ཚ਺Ͱ͸ͳ͍ͷͰɺಉ͡ೖྗ஋͔Β͸ৗʹಉ͡ग़ྗ஋ΛಘΔ
   ग़ྗ஋͔Βೖྗ஋Λਪଌ͢Δͷ͸΄΅ෆՄೳ
   IUUQTXXXNPWBCMFUZQFDPVLTDSJQUTTIBIUNM
   

   IUUQTHPPHM1PHF#
   8
   ೖྗ͸Մม௕
   PQFOTPVSDF
   ग़ྗ͸ݻఆ௕
   PQFOTPVSDJ
   CFBCCGCEBDFFD
   DCFBCBCCDDFCGDG
   CBEBEFBGCEC
   DBFDBEGDGFFB
   4)"
   ϋογϡؔ਺
   4)"
   ϋογϡؔ਺
   Ұจࣈ
   ม͑Δ
   શ͘ҟͳΔ
   ஋ʹ
   

   View Slide

9. ެ։伴҉߸
   ެ։伴͸ʮ伴ʯͱ͍͏໊લ͕ͩɺʮৣʯΛΠϝʔδ͢ΔͱΘ͔Γ΍͍͢
   ΞϦε͸Ϙϒͷެ։伴Λ༻͍ͯɺฏจΛ҉߸Խ͢Δ
   Ͱ͖ͨ҉߸จ͸Ϙϒͷൿີ伴Ͱ͔͠෮߸ԽͰ͖ͳ͍
   ҉߸Խ͢Δ伴ʢެ։伴ʣͱ෮߸Խ͢Δ伴ʢൿີ伴ʣ͕ผʑ
   ΞϦε͸Ϙϒͷൿີ伴͕ͳͯ͘΋Ϙϒʹ͔͠෮߸ԽͰ͖ͳ͍҉߸จΛ࡞੒Մ
   9
   φΧϞτατγͷ
   ਖ਼ମ͸ʓʓʓ
   DECGEGE
   FCDBECC
   EDCCFDD
   Ϙϒͷެ։伴
   φΧϞτατγͷ
   ਖ਼ମ͸ʓʓʓ
   ҉߸จ
   ฏจ ฏจ
   Ϙϒͷൿີ伴
   ҉߸Խ
   ෮߸Խ
   ΞϦε Ϙϒ
   

   View Slide

10. ϏοτίΠϯͷެ։伴҉߸ʢུ֓ʣ
    ΞϦε͸Ϙϒʹ#5$ૹΓ͍ͨ
    ΞϦε͸Ωϟϩϧ͔Βड͚औͬͨ#5$͕͋Δͱ͢Δ
    ΞϦεͷެ։伴͕͔͔ͬͨ#5$͕͋Δ
    ΞϦεͷൿີ伴ͰϩοΫΛղআͯ͠࢖͑ΔΑ͏ʹͳΔ
    ΞϦε͕Ϙϒͷެ։伴Λ͔͚Δ͜ͱͰϘϒʹϏοτίΠϯΛૹΔ
    #5$
    Ϙϒͷެ։伴
    ΞϦεͷൿີ伴
    Ωϟϩϧ
    #5$
    ΞϦεͷެ։伴
    ϩοΫղআ
    Ωϟϩϧ͔Β
    ΞϦεʹૹۚ
    ΞϦε͔Β
    Ϙϒʹૹۚ
    

    View Slide

11. 5SBOTBDUJPOT
    τϥϯβΫγϣϯͷ࿮಺Ͱ͸ӈ͔Β࡞ΔʢલͷτϥϯβΫγϣϯͷѼઌ͕ࣗ෼ѼͰ͋Δ͜ͱ͕લఏʣ
    ̍ʣѼઌͷެ։伴Ληοτ
    ̎ʣલͷτϥϯβΫγϣϯϋογϡͱѼઌͷެ։伴ͷϋογϡΛϋογϡ
    ̏ʣ̎ʣͷϋογϡʹॺ໊ʢॺ໊ʹ͸ൿີ伴͸ؚ·Εͳ͍ʣ
    11
    0XOFS
    ΞϦεͷॺ໊
    59ͷ
    )BTI
    0XOFS
    Ϙϒͷެ։伴
    0XOFS
    Ϙϒͷॺ໊
    59ͷ
    )BTI
    0XOFS
    Ωϟϩϧ
    ͷެ։伴
    0XOFS
    Ωϟϩϧ
    ͷॺ໊
    59ͷ
    )BTI
    0XOFS
    σϏοτͷ
    ެ։伴
    ݕ
    ূ
    ݕ
    ূ
    ॺ໊ ॺ໊
    ૹۚ ૹۚ ૹۚ
    τϥϯβΫγϣϯ τϥϯβΫγϣϯ τϥϯβΫγϣϯ
    ൿີ伴 ൿີ伴
    

    View Slide

12. ΞϦε͕Ϙϒʹ#5$ΛૹΔ
    Ҏલड͚औֹ͍ͬͯͨΛ߹ࢉͯ͠ɺ૬खʹૹΓɺ͓௼Γ͸ࣗ෼΁
    59தʹهࡌͷͳֹ͍ ͜͜Ͱ͸#5$
    ͸ޙʹϚΠφʔ΁
    τϥϯβΫγϣϯ5SBOTBDUJPO59ߏ଄
    12
    ΞϦε
    Ϙϒ
    5SBOTBDUJPO 59
    
    */165 065165
    ΞϦε
    Ωϟϩϧ
    ΞϦεˠϘϒ
    #5$
    ΩϟϩϧˠΞϦε
    #5$
    ΞϦεˠΞϦε
    ͓௼Γ
    
    #5$
    #5$
    σϏοτˠΞϦε
    #5$
    #5$
    σϏοτ
    ܭ#5$ ܭ#5$
    ϚΠφʔ
    ωοτϫʔΫख਺ྉ
    #5$
    ˞59ʹهࡌ͸ͳ͍
    ൿີ伴Λࠩ͠ࠐΜͰ
    ϩοΫղআɿిࢠॺ໊
    ΞϦεͷ
    ൿີ伴
    ΞϦεͷ
    ൿີ伴
    ΞϦεͷ
    ެ։伴
    Ϙϒͷ
    ެ։伴
    ΞϦεͷ
    ެ։伴
    ΞϦεͷ
    ެ։伴
    

    View Slide

13. ΞυϨεੜ੒
    ൿີ伴͸ཚ਺Λ࢖ͬͯಘΔ
    Ϗοτͷ੔਺ͳͷͰɺճίΠϯΛ౤͛ͯੜ੒΋Մೳ
    ެ։伴͸&$%4" ପԁۂઢ҉߸
    Λ༻͍ͯൿີ伴ͷεΧϥʔഒࢉʢෆՄٯʣ
    ΞυϨε͸ެ։伴ͷϋογϡʢෆՄٯʣ
    ެ։伴ِ଄໰୊Λ๷͙ͨΊɺϏοτίΠϯͰ͸ެ։伴ͱҰରҰͰରԠ͢ΔΞυϨεΛ࢖༻ʢதԝ؅ཧऀ͕͍ͳ͍ͨΊɺೝ
    ূہ͸࢖Θͳ͍ʣ
    ൿີ伴Λ஌ΒΕΔͱɺ#5$͕౪·ΕΔͷͰ؅ཧ͸ݫॏʹʂ
    13
    L
    ൿີ伴
    1SJWBUF,FZ
    ,
    ެ։伴
    1VCMJD,FZ
    "
    ΞυϨε
    "EESFTT
    ପԁۂઢ্ͷ
    εΧϥʔഒࢉ
    Ұํ޲
    
    ϋογϡؔ਺
    Ұํ޲
    
    ਪଌෆՄ
    ෆՄٯ
    
    ਪଌෆՄ
    ෆՄٯ
    
    

    View Slide

14. ൿີ伴ɾެ։伴ɾΞυϨεͷ࣮ྫ
    ൿີ伴͕Θ͔Ε͹ɺੜ੒نଇ͔ΒҰҙʹܾ·ΔΞυϨεʹඥͮ͘ίΠϯΛૹۚͰ͖Δ
    ઈରʹଞਓʹݟΒΕͯ͸͍͚ͳ͍
    14
    L
    ൿີ伴
    1SJWBUF,FZ
    ,
    ެ։伴
    1VCMJD,FZ
    "
    ΞυϨε
    "EESFTT
    DEFCDBCEEFFDECGBED
    CECCFDCDFGEEECE
    EBDEEFBCGGFCGD
    DEFCDBCEEFFD
    ECGBEDCECCFD
    DYQP.#$::8$H'485EDNYJQO(6T1X
    

    View Slide

15. τϥϯβΫγϣϯνΣʔϯͱ6590ߏ଄
    τϥϯβΫγϣϯ 59
    ͸લͷ59ͷ৘ใΛ͍࣋ͬͯΔʢϋογϡϙΠϯλʣ
    ݩΛḷΕ͹ɺඞͣ$PJOCBTF59ʹͨͲΓண͘
    ϚΠφʔ͸ࣗ෼ͷΞυϨεʹରͯ͠ϚΠχϯάใुΛૹΔ59ΛϒϩοΫʹؚ·ͤΔ
    */165෦͸ۭ
    65906OTQFOU5SBOTBDUJPO0VUQVUϏοτίΠϯ͸ʮ6590ߏ଄ʯ
    15
    TX
    Coinbase TX
    ۭ
    TX
    TX
    TX
    TX
    TX TX
    15
    ࢀর
    ࢀর
    ࣍ͷ59ͷ*/165ʹ࢖༻͞Ε͍ͯͳ͍
    ະ࢖༻6590ͷ͔͖ूΊ͕࢒ߴ
    

    View Slide

16. ೋॏࢧ෷͍ΛແޮԽ͢Δʹ͸ʁ
    ೋॏࢧ෷͍ΛແޮԽ͢ΔͨΊʹɺ6590͕࢖༻ࡁΈͰ͋Δ͔ͷ൑ఆ͕ඞཁ
    ࢖༻ࡁΈͰ͋Δ͜ͱ͸ɺܝࣔ൘ʹ·ͱΊͯ஌ΒͤΔ
    ϒϩοΫ͸ެ༻ܝࣔ൘
    16
    ࢖༻ࡁΈ6590Ұཡ
    ΞϦεˠϘϒ#5$
    ΤϨϯˠΩϟϩϧ#5$
    ΩϟϩϧˠσϏοτ#5$
    ΩϟϩϧˠΞϦε#5$
    ϘϒˠΤϨϯ#5$
    

    View Slide

17. ୭͕ϒϩοΫʢܝࣔ൘ʣΛ࡞੒͢Δͷ͔ʁ
    ۃΊͯ௿͍֬཰ͷλʔήοτΛݟ͚ͭͨਓʹϒϩοΫʢܝࣔ൘ʣ࡞੒ͷݖར
    ྫ͑ΔͳΒɺ࢛ͭ༿ͷΫϩʔόʔΛ୳͢େձ
    ௿͍֬཰ͷλʔήοτ͕ݟ͔ͭͬͨ
    ͦΕ͚ͩେมͳ࡞ۀΛͨ͠ͱ͍͏͜ͱ
    ӡΑ͙͘͢ʹݟ͔ͭΔ͜ͱ΋͋Δ͕ɺ੒ޭΛଓ͚Δʹ͸࿑ྗΛׂ͖ଓ͚Δ͔͠
    ͳ͍
    ϏοτίΠϯͷ৔߹͸ɺޮ཰తͳΞϧΰϦζϜ͕ଘࡏ͠ͳ͍ͱ͞ΕΔ୯७ͳܭࢉ
    Λͻͨ͢Β΍Γଓ͚Δ
    ΍Δͷ͸ϚΠχϯάϚγϯͰɺిؾ୅͕ͱͯ΋͔͔Δ
    େมͳ࡞ۀΛͨ͠ਓ͸ෆਖ਼ͷͨΊΑΓ΋ϒϩοΫใुͱ͍͏ΠϯηϯςΟϒͷͨΊ
    ʹਖ਼͍͠ߦಈΛ͢Δͱ͍͏લఏ
    1SPPGPG8PSLʢ࡞ۀূ໌ʣͱ͍͏
    17
    

    View Slide

18. 1SPPGPG8PSL
    ੲ͸1$Ͱ΋ϚΠχϯάͰ͖ͯφΧϞτ࿦จͰ΋ͦ͏͍͏લఏ͕ͩɺ
    

    ࢿຊΛ౤Լͨ͠ϚΠχϯάϏδωε͕࢝·ͬͯϋογϡύϫʔ͕૿͑ͯ΋ɺରԠͰ͖Δ࢓૊Έʹͳ͍ͬͯΔ
    18
    

    View Slide

19. ϚʔΫϧϧʔτ
    ϒϩοΫͷߏ଄
    ϒϩοΫʹؚΊΔτϥϯβΫγϣϯΛ·ͱΊͨϚʔΫϧϧʔτΛܭࢉ
    59͕ͲͷϒϩοΫʹೖ͍ͬͯΔ͔͕Θ͔Δ
    ϒϩοΫϔομͱτϥϯβΫγϣϯ͕ϒϩοΫʹؚ·ΕΔ
    ʮφϯεʯͱ͍͏ԿͰ΋ྑ͍ύϥϝʔλΛೖΕͯϒϩοΫͷϋογϡΛܭࢉ
    ͦͷ಄/ܻ͕શͯʹͳΔ·Ͱʢਐ਺ͳͷͰɺ֬཰͸ͷ/৐ʣ
    ͘͢͝௿͍֬཰ʢྫ͑ΔͳΒܻ͋ΔμΠϠϧϩοΫΛຖճ਺ࣈม͑ͯղৣͰ͖Δ͔ࢼ͢ʣ
    19
    લͷϒϩοΫͷϋο
    γϡ
    લͷϒϩοΫ
    ͷϔομ
    λΠϜελϯϓ
    φϯε
    ϒϩοΫͷϋογϡ
    GFCGEFGEGEECCDEF
    CFC
    ͻͨ͢Βม͑ͯ
    ϒϩοΫϋογϡΛܭࢉ
    59 59
    59
    59
    59
    59
    

    View Slide

20. ϒϩοΫ͸લͷϒϩοΫΛϋογϡϙΠϯλͰࢀরͯ͠ (FOFTJT#MPDL
    ͔Β࠷৽ͷϒϩοΫ·Ͱܨ͕͍ͬͯΔ
    ్தͷϒϩοΫʹऔΓࠐ·Ε͍ͯΔτϥϯβΫγϣϯͷத਎Λมߋ͢Δʹ͸ɺϒϩοΫͷ࡞Γ௚͠ͱޙଓͷϒϩοΫΛ࡞
    Γ௚͞ͳ͚Ε͹ͳΒͳ͍
    w ϏοτͰ΋ม͑Δͱɺϋογϡ஋͕શ͘ҟͳΔͷͱɺϒϩοΫΛ࡞Γ௚͢ϚΠχϯά΋ඞཁͰɺվ͟Μ͸ࠔ೉
    ϒϩοΫνΣʔϯ
    20
    ࢀর ࢀর ࢀর ࢀর ࢀর ࢀর
    59 59
    59
    59
    59
    59
    59
    ᶃվ͟Μ͍ͨ͠
    ᶄϒϩοΫ࡞Γ௚͠
    ͜Ε͚ͩͰ΋େม ᶅޙଓͷϒϩοΫ࡞Γ௚͠
    ͘͢͝େม
    ௕͍ϒϩοΫΛ
    ਖ਼౰ͱΈͳ͢
    ᶆݱࡏͷϒϩοΫνΣʔϯ
    ΑΓ΋௕͘͢Δ
    

    View Slide

21. ೉қ౓ௐ੔ͱใु
    ϒϩοΫͷϋογϡ಄/ܻ͕Ͱ͋Δ͔ʢ೉қ౓ʣ͸ϒϩοΫ͔͔ͬͨ࣌ؒΛ
    ෼ ೔िؒ
    ͱൺֱܾͯ͠ΊΔ
    ̍ϒϩοΫ࡞Δͷʹฏۉ෼
    ೉қ౓Λ্͛Δʹ͸಄ͷͷܻ਺Λ૿΍͢ɺ೉қ౓ΛԼ͛ΔͳΒݮΒ͢
    ੒ޭ֬཰͸?/ʢ/ɿܻ਺ɺϋογϡ͸ਐ਺ʣ
    ϒϩοΫใु͸ (FOFTJT#MPDL
    ͕#5$ɺ Ͱ#5$ɺ
    Ͱ#5$ͱ͍͏Α͏ʹ ϒϩοΫ͝ͱʹใु൒ݮ
    ໿̐೥ʹ̍ճՆقޒྠͷ೥ͷՆࠒʹ൒ݮ͢Δ
    ϏοτίΠϯΛ৽نൃߦ͍ͯ͠Δ
    ೥ʹ৽نൃߦ͕ऴΘΓɺ૯ֹສ#5$ͱͳΔ
    ݶΓ͋Δۚ ΰʔϧυ
    ͷ࠾۷ ϚΠχϯά
    ʹͳͧΒ͑ͯϒϩοΫੜ੒࡞ۀͷΛϚ
    ΠχϯάͱݺͿ
    σϑϨܕ௨՟ͳͷͰɺର๏ఆ௨՟Ͱ#5$Ձ֨͸্͕͍ͬͯ͘܏޲ʹ͋Δ
    21
    

    View Slide

22. 11ωοτϫʔΫͰͷసૹ
    ࡞੒ͨ͠τϥϯβΫγϣϯΛϏοτίΠϯ11ωοτϫʔΫʹϒϩʔυΩϟετ ൃใ
    ͢Δ
    ϊʔυ͸59ͷܗࣜΛνΣοΫ͠ɺϏοτίΠϯͷܗࣜͱͯ͠ਖ਼͚͠Ε͹ɺྡͷϊʔυʹసૹ͍ͯ͘͠
    શͯͷϊʔυ͕ಉ͡59Λ࣋ͭ
    

    ʢશੈքͷϊʔυʹߦ͖౉Δʣ
    22
    ΞϦε
    Ϙϒ
    59
    ൃใ
    59
    59
    59
    సૹ సૹ
    59
    59
    59
    సૹ
    సૹ
    సૹ
    సૹ
    స
    ૹ
    

    View Slide

23. ωοτϫʔΫख਺ྉͷҙຯ
    ϚΠφʔ͕ঝೝͰ͖Δσʔλྔʹ͸ݶΓ͕͋ΔʢϒϩοΫ.#ʣ
    ωοτϫʔΫख਺ྉΛ՝͢͜ͱʹΑͬͯɺωοτϫʔΫ্ͷσʔλྔΛ཈੍͢Δ͜
    ͱ͕Ͱ͖Δ
    ख਺ྉ͸σʔλαΠζʹൺྫ
    τϥϯβΫγϣϯͷ*/165਺ɺ065165਺͕ଟ͚Ε͹σʔλαΠζ͸େ͖͘ͳ
    Δ
    ख਺ྉ͸ωοτϫʔΫͷࠞࡶ౓߹͍ʹӨڹ͞ΕΔ
    ର๏ఆ௨՟ͷՁ֨ͱ͸௚઀ؔ܎ͳ͍͕ɺՁ্͕͕֨ΔͱऔҾ਺͕૿͑ΔͨΊख
    ਺ྉ͸্ঢ͠ɺՁ͕֨҆ఆ͍ͯ͠Δ࣌͸ख਺ྉ͕͍҆
    ࢢ৔ͷݪཧʹΑͬͯ໨͕҆Θ͔Δ
    ͲͷτϥϯβΫγϣϯΛϒϩοΫʹऔΓࠐΉ͔͸ϚΠφʔ͕ࣗ༝ʹܾΊΒΕΔ
    ϚΠχϯά΋ϏδωεͳͷͰɺख਺ྉͷߴ͍59͕༏ઌͯ͠औΓࠐ·ΕΔ
    ૹۚऀ͕෷͏
    ిࢠܾࡁͷΑ͏ʹళฮଆ डऔଆෛ୲
    ͕Ͱ͖ͳ͍
    23
    

    View Slide

24. ใुͷҙຯ
    ΠϯηϯςΟϒ͕͋Δ͜ͱͰɺϚΠχϯάͱ͍͏ӡ༻΁ͷࢀՃΛଅ͢
    ϚΠφʔ͕૿͑ɺϋογϡύϫʔ͕େ͖͘ͳΔͱɺϏοτίΠϯωοτϫʔΫͷηΩϡϦςΟ͕૿͢
    w ੈքதͷεʔύʔίϯϐϡʔλ͕ଋʹͳͬͯ΋ϏοτίΠϯωοτϒϩοΫνΣʔϯΛվ͟ΜͰ͖ͳ͍
    ϒϩοΫʹؚ·ΕΔτϥϯβΫγϣϯͷख਺ྉ΋ϚΠφʔ͕΋Β͑Δ
    ϒϩοΫใु৽نൃߦ ݱࡏ#5$
    Є ϒϩοΫதͷ59ख਺ྉ
    
    24
    ϒϩοΫ
    59
    59
    59
    59
    59
    59
    5SBOTBDUJPO 59
    
    */165 065165
    ΞϦεˠϘϒ
    #5$
    ΩϟϩϧˠΞϦε
    #5$
    ΞϦεˠΞϦε
    ͓௼Γ
    
    #5$
    σϏοτˠΞϦε
    #5$
    ܭ#5$ ܭ#5$
    ϚΠφʔ
    ωοτϫʔΫख਺ྉ
    #5$
    ˞59ʹهࡌ͸ͳ͍
    $PJOCBTF59
    ใुΛࣗ෼΁
    

    View Slide

25. 4JNQMJ
    fi
    FE1BZNFOU7FSJ
    fi
    DBUJPO
    417ϊʔυ
    ΢ΥϨοτʹؔ܎͋ΔτϥϯβΫγϣϯͱϒϩοΫϔομͷΈऔಘ
    શͯͷτϥϯβΫγϣϯ͸֨ೲ͠ͳ͍
    #JUDPJO$PSF CJUDPJOE
    Λ΢ΥϨοτػೳ༗ޮͰՔಇͤ͞Δͱ417Ϟʔυ
    ىಈΦϓγϣϯʹUYJOEFYΛ෇͚ΔͱશͯͷτϥϯβΫγϣϯ΋֨ೲ͢ΔϑϧϊʔυϞʔυ
    ϑϧϊʔυʹൺ΂ͯɺαʔόʔͷσΟεΫ࢖༻ྔΛ࡟ݮͰ͖Δ
    -JHIUOJOH/FUXPSLͷϞόΠϧΞϓϦͰ࢖༻͞ΕΔ͜ͱ΋ଟ͍
    25
    

    View Slide

26. $PNCJOJOHBOE4QMJUUJOH7BMVF
    6590ͷઆ໌
    ࣍ষͷϓϥΠόγʔͱ΋ؔ࿈͢Δ͕ɺ6590ߏ଄ʹΑͬͯΞυϨεͷ࢖͍ࣺͯΛՄೳʹ͍ͯ͠Δ
    ͨͩ͠ɺΞυϨεͷ࢖͍ࣺͯͰ΋".-ݕ஌πʔϧΛۦ࢖͢Ε͹ɺτϥϯβΫγϣϯͷ௥੻͸༰қʹͳ͍ͬͯΔ
    26
    

    View Slide

27. τϥϯβΫγϣϯΛ೔ຊԁͷࢧ෷͍Ͱྫ͑Δ
    ΞϦε͕Ϙϒͷఆ৯԰ͰԁͷϥϯνΛ৯΂·ͨ͠ɻ
    ΞϦε͸ԁࡳΛຕɺԁࡳΛຕɺԁۄΛຕ͍࣋ͬͯ·͢ɻ
    ΞϦε͸ࢧ෷͍ʹɺԁࡳຕɺԁۄຕΛ࢖͍·ͨ͠ɻ
    ԁΛ౉͢ͱɺ͓௼Γ͸ԁͰ͢ɻ
    τϥϯβΫγϣϯ͸*/165෦ʢऩೖʣͱ065165෦ʢࢧग़ʣͷऩࢧ͕߹͏ෳࣜ฽هͰ͢ɻ
    27
    ΞϦε
    Ϙϒ
    ΞϦε
    τϥϯβΫγϣϯ
    1000ԁࡳ
    500ԁۄ
    INPUT OUTPUT
    ࢧ෷
    1200ԁ
    ߹ܭ1500ԁ
    ͓௼Γ
    300ԁ
    ߹ܭ1500ԁ
    

    View Slide

28. φΧϞτ࿦จൃදޙͷ#JUDPJOՔಇ
    ೥݄೔ 65$
    ʹ#JUDPJOՔಇ (FOFTJT#MPDL%BZ
    
    IUUQTCMPDLTUSFBNJOGPCMPDL
    EDBFF
    ff
    BFBBDCGCBDFG
    ϑϧϊʔυͷϒϩοΫ໨ΛݟΔͱVOJYUJNF͸Ͱ͔֬ʹ65$
    5IFHFOFTJTCMPDLDPJOCBTFJTOPUDPOTJEFSFEBOPSEJOBSZUSBOTBDUJPOBOEDBOOPUCFSFUSJFWFE
    w HFOFTJTCMPDLͷ$PJOCBTF5SBOTBDUJPOͷத਎͸औಘͰ͖ͳ͍
    w IUUQTCMPDLTUSFBNJOGPUY
    BFFCBBCGBBDCDGGFDDBCCBGEFEBC
    28
    

    View Slide

29. ϏοτίΠϯ͸Φʔϓϯιʔε
    ϏοτίΠϯ #JUDPJO
    ͸Φʔϓϯιʔε
    ୭Ͱ΋։ൃʹࢀՃՄೳʂ
    

    IUUQTHJUIVCDPNCJUDPJOCJUDPJO
    ϏοτίΠϯΛ͸͡Ίɺ҉߸௨՟ɾϒϩοΫνΣʔϯͷଟ͘͸044
    ٕज़తʹ΋໘ന͍ʂʂ
    ϥΠτίΠϯ -JUFDPJO
    ͸#JUDPJOͷιʔείʔυ͔ΒϑΥʔΫ
    

    IUUQTHJUIVCDPNMJUFDPJOQSPKFDUMJUFDPJO
    ϞφίΠϯ .POBDPJO
    ͸-JUFDPJOͷιʔείʔυ͕ϕʔε
    

    IUUQTHJUIVCDPNNPOBDPJOQSPKFDUNPOBDPJO
    ΠʔαϦΞϜ &UIFSFVN
    ΋Φʔϓϯιʔε
    

    IUUQTHJUIVCDPNFUIFSFVNHPFUIFSFVN
    29
    

    View Slide

30. ςετωοτ
    ϝΠϯωοτ
    ςετωοτ
    ಠཱ
    ຊ෺ͷϏοτίΠϯ͕ྲྀ௨͢ΔωοτϫʔΫ͕ϝΠϯωοτ NBJOOFU
    ɺ։ൃ࣌ͳͲʹຊ෺ͷϏοτίΠϯΛ࢖༻͠ͳͯ͘
    ΋͍͍Α͏ʹɺςετωοτ UFTUOFU
    ͕༻ҙ͞Ε͍ͯ·͢ɻςετωοτ΋ύϒϦοΫͳωοτϫʔΫͰɺϝΠϯωοτͱ
    ͸ಠཱͨ͠ωοτϫʔΫͰ͢ɻ
    30
    

    View Slide

31. ϒϩοΫͷঝೝ਺
    ঝೝ਺͕ଟ͚Ε͹ଟ͍΄Ͳ෴Γʹ͍͘ʢ֬཰తϑΝΠφϦςΟʣ
    31
    TX
    Memory Pool(mempool)
    TX
    ࠷৽ϒϩοΫ
    ະঝೝʢ̌ঝೝɿ0 Confirmation)
    TX
    Memory Pool(mempool)
    TX
    ࠷৽ϒϩοΫ
    1ঝೝɿ1 Confirmation
    ࣗ෼ͷૹۚTX
    TX
    ࣗ෼ͷૹۚTX
    TX
    Memory Pool(mempool)
    TX
    ࠷৽ϒϩοΫ
    6ঝೝɿ6 Confirmationʢ঎औҾͰΑ͘࢖ΘΕΔঝೝ਺ʣ
    TX
    ࣗ෼ͷૹۚTX
    ະঝೝTX(τϥϯβΫγϣϯ)
    ؚ͕·ΕΔ
    ϚΠφʔใु͸ঝೝ͞ΕΔ·ͰϩοΫ͞Ε͍ͯͯɺͦΕ·Ͱ࢖༻Ͱ͖ͳ͍
    

    View Slide

32. ΞϦε͕Ϙϒʹ#5$ΛૹΔ
    Ҏલड͚औֹ͍ͬͯͨΛ߹ࢉͯ͠ɺ૬खʹૹΓɺ͓௼Γ͸ࣗ෼΁
    59தʹهࡌͷͳֹ͍ ͜͜Ͱ͸#5$
    ͸ޙʹϚΠφʔ΁
    τϥϯβΫγϣϯ5SBOTBDUJPO59
    32
    ΞϦε
    Ϙϒ
    5SBOTBDUJPO 59
    
    */165 065165
    ΞϦε
    Ωϟϩϧ
    ΞϦεˠϘϒ
    #5$
    ΩϟϩϧˠΞϦε
    #5$
    ΞϦεˠΞϦε
    ͓௼Γ
    
    #5$
    #5$
    σϏοτˠΞϦε
    #5$
    #5$
    σϏοτ
    ܭ#5$ ܭ#5$
    ϚΠφʔ
    ωοτϫʔΫख਺ྉ
    #5$
    ˞59ʹهࡌ͸ͳ͍
    ൿີ伴Λࠩ͠ࠐΜͰ
    ϩοΫղআɿిࢠॺ໊
    ΞϦεͷ
    ൿີ伴
    ΞϦεͷ
    ൿີ伴
    ΞϦεͷ
    ެ։伴
    Ϙϒͷ
    ެ։伴
    ΞϦεͷ
    ެ։伴
    ΞϦεͷ
    ެ։伴
    

    View Slide

33. ϏοτίΠϯͷख਺ྉ
    ϒϩοΫੜ੒ͰಘΒΕΔϏοτίΠϯใुͱख਺ྉͷྫ
    ͷ৔߹͸ɺϒϩοΫใुख਺ྉ߹ܭ#5$
    IUUQTCMPDLDIBJOJOGPCMPDLDBEEGDDBBGCFFGDBDEB
    33
    ࢀߟʣࠞࡶ࣌
    

    View Slide

34. ҎԼɺ෇࿥
    

    View Slide

35. ϏοτίΠϯͱ͸
    தԝ؅ཧऀΛ࣋ͨͳ͍11ిࢠϚωʔγεςϜʢඇதԝूݖతͳ҉߸௨՟ʣ
    தԝ؅ཧऀΛ࣋ͭۚ༥γεςϜͱ͸ۜߦͳͲ
    ϏοτίΠϯ͕ੜ·ΕΔલ͔Β11ిࢠϚωʔͷݚڀ͸ߦΘΕ͍ͯͨ
    w ࣮༻ԽϨϕϧͰॳΊͯ੒ޭͨ͠ͷ͕ϏοτίΠϯ
    w ҎޙɺϏοτίΠϯͷٕज़Λجʹ༷ʑͳ҉߸௨՟͕ొ৔
    w ϏοτίΠϯͷج൫ٕज़ʮϒϩοΫνΣʔϯʯΛ௨՟Ҏ֎΁ͷԠ༻΋
    ೥຤4BUPTIJ/BLBNPUP φΧϞτατγ
    ͕࿦จΛΦʔϓϯιʔείϛϡ
    χςΟͷϝʔϦϯάϦετʹ౤ߘ
    w IUUQTCJUDPJOPSHCJUDPJOQEG
    ೥ʹϏοτίΠϯ͕Քಇ࢝͠Ίͨ
    ୭ʹ΋ૹۚΛअຐͰ͖ͳ͍
    35
    

    View Slide

36. ΞυϨεͷ؅ཧͱಗ໊ੑ
    ΞυϨε͸ҰਓͰ͍ͭ͘΋࣋ͯΔ
    ͓௼ΓΞυϨεΛૹ৴ݩΞυϨεͱ͸ผʹͯ͠ɺಗ໊తʹར༻ͨ͠ํ͕͍͍
    ୭͕͍͘Β͍࣋ͬͯΔ͔Λ஌ΒΕͳ͍ͨΊ
    ΞυϨεٴͼͦͷதʹ͋ΔϏοτίΠϯ͕୭ͷ࣋ͪ෺͔͸ϏοτίΠϯωοτϫʔΫͰ͸Θ͔Βͳ͍
    ΞυϨεͷੜ੒ݩͱͳͬͨൿີ伴Λૢ࡞Ͱ͖Δਓ͕࣋ͪओ
    w ൿີ伴Λ౪·Εͯ΋ϏοτίΠϯωοτϫʔΫͰ͸ؔ༩͠ͳ͍
    36
    

    View Slide

37. ΢ΥϨοτʹ͓͕ۚೖ͍ͬͯΔͱ͍͏ΑΓ͸ɺൿີ伴͕ೖ͍ͬͯΔ
    ൿີ伴͸σδλϧσʔλ จࣈྻ
    ͳͷͰ౪ΈݟΒΕΔͱଞਓ΋࢖͑Δ
    ෺ཧతͳ伴΋߹伴͕࡞ΕΔʢෳ੡Ͱ͖ΔʣΑ͏ʹ
    ϊʔυͷ෼ࢄ୆ா͸શऔҾΛ͓࣋ͬͯΓɺΈΜͳಉ͡σʔλ
    ൿີ伴ͰੈքதͷͲͷϏοτίΠϯϊʔυ͔ΒͰ΋ࣗ෼ѼͰ
    

    ະ࢖༻ͳ 6OTQFOU
    5SBOTBDUJPO0VUQVU 6590
    
    

    Λૢ࡞͢Δ͜ͱ͕Ͱ͖Δ
    ϏοτίΠϯͷ΢ΥϨοτ
    37
    TX
    TX
    ࣗ෼ͷ
    6590
    ଞਓͷ
    6590
    ࣗ෼ͷ
    4QFOU
    ࣗ෼ͷ
    6590
    

    View Slide

38. ϒϩοΫνΣʔϯ
    ೋॏࢧ෷͍ΛແޮԽ͢Δखஈ
    ೋॏࢧ෷͍͸Ͱ͖Δ͕ɺϒϩοΫʹࡌΒͳ͚Ε͹ແޮ
    ϒϩοΫνΣʔϯ͸ࣄޙঝೝͷζϧ͍γεςϜ
    ͔ͩΒɺγεςϜμ΢ϯ͠ͳ͍
    τϥϯβΫγϣϯΛେྔʹྲྀͯ͠ωοτϫʔΫͷෛՙΛ্͛ͯ΋ɺ஗Ԇ͕ى͜Δ͚ͩͰམͪͳ͍
    தԝ؅ཧ͞ΕͨγεςϜͩͱɺ%#Ͱॱ൪ʹॲཧ͢ΔͨΊɺॲཧ͕٧·ΔͱམͪΔ
    38
    

    View Slide

39. ϚΠχϯάͷϏδωεԽ
    ϚΠχϯάʹ͸େن໛ͳࢿຊ͕౤Լ͞ΕɺҰେϏδωεʹʂ
    ੲ͸ݸਓͰϚΠχϯάͰ͖͕ͨɺ͍·Ͱ͸ݸਓͰ͸ଠ౛ଧͪͰ͖ͳ͍Ϩϕϧʹͳ͍ͬͯΔ
    ϚΠχϯάϚγϯΛฒ΂ͨࢪઃ͸ϚΠχϯάϑΝʔϜͱΘΕɺ޻৔ͷΑ͏ͳ
    ϚΠχϯάใु֫ಘͷͨΊʹɺܹ͍͠ϚΠχϯάڝ૪
    39
    ੈք࠷େखͷϚΠχϯάϑΝʔϜ#JUNBJO
    

    View Slide

40. ϊʔυɾ΢ΥϨοτͷछྨ
    ϑϧϊʔυ͸11ωοτϫʔΫʹྲྀΕΔτϥϯβΫγϣϯͱϒϩοΫΛݕূ͠ɺਖ਼͍͠ܗࣜͷ΋ͷ͸ࣗϊʔυऔΓࠐΉ
    աڈ͔ΒશͯͷτϥϯβΫγϣϯʢऔҾཤྺʣͱϒϩοΫΛ࣋ͭ
    શͯͷσʔλΛ࣋ͭʹ͸ॏ͗͢ΔͷͰɺϒϩοΫϔομͱࣗ෼ͷ΢ΥϨοτʹؔ܎͢ΔऔҾͷΈΛ࣋ͭܰྔ΢ΥϨοτ
    ʮ417ϊʔυʗ΢ΥϨοτʯ͕͋Δ
    औҾͷݕূ͸Ͱ͖ͳ͍
    ࣗ෼ͷϊʔυΛ࣋ͨͣʹΞυϨεੜ੒΍ૹۚͷͰ͖Δ8FC΢ΥϨοτ΋͋Δ͕ɺηΩϡϦςΟతʹ஫ҙ͕ඞཁ
    ෺ཧతͳૢ࡞ΛߦΘͳ͍ͱૹ͕ۚͰ͖ͳ͍ηΩϡϦςΟ͕ߴ͍ϋʔυ΢ΣΞ΢ΥϨοτ΋͋Δ
    ϞόΠϧ΢ΥϨοτ͸ɺϞόΠϧΞϓϦʹൿີ伴͕ೖ͍ͬͯͯૹ͕ۚͰ͖Δ
    େۚ͸ஔ͘΂͖Ͱ͸ͳ͍
    40
    

    View Slide

41. ϒϩοΫνΣʔϯΤΫεϓϩʔϥ
    ࣗ෼ͰϊʔυΛ࣋ͨͳͯ͘΋શͯͷऔҾͱϒϩοΫΛՄࢹԽͰ͖ΔϒϩοΫνΣʔϯΤΫεϓϩʔϥ͕͋Δ
    IUUQTCMPDLTUSFBNJOGP
    ༷ʑͳ։ൃݩ͔ΒϒϩοΫνΣʔϯΤΫεϓϩʔϥ͕ఏڙ͞Ε͍ͯΔ
    41
    

    View Slide

42. ϏοτίΠϯͷϢʔεέʔε
    ϏοτίΠϯ͸Ծ૝௨՟ͷதͰ͸ɺ࠷΋ϙϐϡϥʔͳࢧ෷͍खஈ
    42
    ϏοΫΧϝϥ͸CJU'MZFSͱఏܞ͓ͯ͠Γɺ
    ϏοτίΠϯࢧ෷͍Մೳ
    

    ʢCJU'MZFSͷΞΧ΢ϯτ͸ෆཁʣ
    ϏοτίΠϯͰߪೖͨ͠
    SHARP੡υϥΠϠʔ
    

    View Slide

43. ϏοτίΠϯͷϢʔεέʔε
    ҿ৯ళͰ΋౦ژΛத৺ʹԾ૝௨՟ܾࡁՄೳͳళ͕͋Δ
    ࿡ຊ໦ͷόʔʮ5XP%PHT5BQSPPNʯͰ͸ΫϥϑτϏʔϧ΍ੴ༼Ͱম͔Εͨຊ֨
    1J[[BΛָ͠ΊΔ
    43
    

    View Slide