ライトニングネットワーク 技術基礎と今後の見通し

ライトニングネットワーク Lightning Network

Transcript

1. ϥΠτχϯάωοτϫʔΫ ٕज़جૅͱࠓޙͷݟ௨͠ 5BLBZB
   *NBJ
   ૑ۀऀ
   ୅ද$&0!'SPOUJFS
   1BSUOFST
   --$
   ౦ژେֶ
   ϒϩοΫνΣʔϯΠϊϕʔγϣϯد෇ߨ࠲
   &OEPXFE
   $IBJS
   GPS
   #MPDLDIBJO
   *OOPWBUJPO
   UIF
   6OJWFSTJUZ
   PG
   5PLZP
   
2. ࣗݾ঺հ ϑϩϯςΟΞύʔτφʔζ߹ಉձࣾ ୅දCEO United Bitcoiners Inc. ڞಉ૑ۀऀˍऔక໾CTO ϚελϦϯάϏοτίΠϯɺ຋༁ऀ୅ද ੈքͰॳΊͯͷɺ೔ຊޠʹΑΔϏοτίΠϯɾϒϩοΫνΣʔϯͷৄࡉٕज़ॻ શମͷׂ̕Λ຋༁ ୈ̍̎࡮ 2016/7/14ग़൛ ిࢠॻ੶൛(kindle)΋ ΦʔϓϯΤσΟγϣϯ൛ https://www.bitcoinbook.info ίϯαΠε൛ͱ߹Θͤͯ13,300෦ൃߦ
3. ࣗݾ঺հ όοΫάϥ΢ϯυ ৽ׁେֶେֶӃɹૉཻࢠཧ࿦෺ཧɹത࢜(ཧ) ΧΧΫίϜ ݕࡧΤϯδϯ։ൃɹݕࡧαʔόΫϥελߏஙӡ༻ɹେن໛σʔλॲཧɹػցֶशɹ ը૾ೝࣝ σʔλλϫʔגࣜձࣾɹ୅දऔక໾
4. ໨࣍ 1. ηΧϯυϨΠϠʔٕज़ʁ 2. ͳͥ͜ͷྖҬʹڵຯΛ͍࣋ͬͯΔͷ͔ʁ 3. ࠓͷঢ়گ͸ʁϏδωεͰ࢖͑Δͷ͸͍͔ͭΒʁ 4. কདྷ໘നͦ͏ͳٕज़͸ͲΜͳ΋ͷ͕͋Δʁ
5. 1, ηΧϯυϨΠϠʔٕज़ʁ
6. ηΧϯυϨΠϠʔٕज़ʁ ΦϑνΣʔϯٕज़ͱ΋ݺͼ·͢ɻ ϒϩοΫνΣʔϯͱؔ࿈ͤͭͭ͞΋ɺΏΔؔ͘࿈͞ ͓͖ͤͯϒϩοΫνΣʔϯͱ͸ผʹಈ͘΋ͷ ϒϩοΫνΣʔϯ ηΧϯυϨΠϠʔٕज़ ̍૚໨ ̎૚໨
7. ϥΠτχϯάωοτϫʔΫʁ
8. ϥΠτχϯάωοτϫʔΫʁ ηΧϯυϨΠϠʔٕज़ͷҰͭ 2015೥2݄ʹJoseph PoonͱThaddeus DryjaʹΑͬͯఏҊ͞ΕͨϏοτ ίΠϯ্ͷηΧϯυϨΠϠʔٕज़ औҾख਺ྉΛ҆͘͢Δ͜ͱͱૹۚ଎౓Λ଎͘͢Δ͜ͱΛ໨తͱ͍ͯ͠ Δ “νϟωϧ”ͱ͍͏̎ऀؒૹۚܦ࿏ʹΑΔP̎PωοτϫʔΫͰ͋Γɺෳ ਺ͷνϟωϧΛܦ༝ͯ͠ૹۚ͢Δ νϟωϧऔҾ૬खɺૹۚ஥հऀΛ৴༻͢Δඞཁ͕ͳ͍
9. ϏοτίΠϯͷ εέʔϦϯά໰୊ εέʔϦϯά໰୊ ඵؒऔҾ਺͕̓݅ఔ౓ 1MB / 256byte /10෼/60ඵ = 6.8औҾຖඵ Segwit (Segregated Witness)༗ޮԽޙɺ̍ϒϩοΫʹ̍MBΑΓೖΔΑ͏ʹͳͬͨͨΊɺඵؒऔҾ਺ ͸લΑΓվળ ϒϩοΫνΣʔϯαΠζͷ૿େ ̎̌̌GB (2019/2/21ݱࡏ) τϥϯβΫγϣϯख਺ྉͷߴಅ ૹ෇͞ΕΔτϥϯβΫγϣϯͷ਺͕૿͑ΔͱɺϚΠφʔ͸ΑΓख਺ྉͷߴ͍τϥϯβΫγϣϯ͔Β ϒϩοΫʹऔΓࠐ΋͏ͱ͢Δ ࠷ۙ͸̍ճͷૹۚ͋ͨΓ30ԁఔ౓ 2017೥12݄͸ϐʔΫͰ̍ճͷૹۚ͋ͨΓ4000ԁఔ౓ͷͱ͖΋͋ͬͨ
10. ඵؒऔҾ਺ 4.6tx/sec
11. ඵؒऔҾ਺
12. ϏοτίΠϯϒϩοΫνΣʔϯαΠζ 200GB
13. τϥϯβΫγϣϯख਺ྉ ̍ճૹۚ͋ͨΓ4000ԁ͘Β͍
14. τϥϯβΫγϣϯख਺ྉ https://jochen-hoenicke.de/queue/#1,1w
15. ϏοτίΠϯͷ εέʔϦϯά໰୊ εέʔϦϯά໰୊ ඵؒऔҾ਺͕̓݅ఔ౓ 1MB / 256byte /10෼/60ඵ = 6.8औҾຖඵ Segwit (Segregated Witness)༗ޮԽޙɺ̍ϒϩοΫʹ̍MBΑΓೖΔΑ͏ʹͳͬͨͨΊɺඵؒऔҾ਺ ͸લΑΓվળ ϒϩοΫνΣʔϯαΠζͷ૿େ ̎̌̌GB (2019/2/21ݱࡏ) τϥϯβΫγϣϯख਺ྉͷߴಅ ૹ෇͞ΕΔτϥϯβΫγϣϯͷ਺͕૿͑ΔͱɺϚΠφʔ͸ΑΓख਺ྉͷߴ͍τϥϯβΫγϣϯ͔Β ϒϩοΫʹऔΓࠐ΋͏ͱ͢Δ ࠷ۙ͸̍ճͷૹۚ͋ͨΓ30ԁఔ౓ 2017೥12݄͸ϐʔΫͰ̍ճͷૹۚ͋ͨΓ4000ԁఔ౓ͷͱ͖΋͋ͬͨ
16. ͍Ζ͍Ζͳղܾࡦ ΦϯνΣʔϯεέʔϦϯά औҾຖʹϒϩοΫνΣʔϯʹॻ͖ࠐΉ͜ͱΛલఏͱͯ͠ɺॲཧೳ ྗͷ૿ڧΛ͢ΔεέʔϦϯάํ๏ ΦϑνΣʔϯεέʔϦϯά ϒϩοΫνΣʔϯʹॻ͖ࠐΉճ਺ΛݮΒ͢͜ͱͰɺॲཧೳྗͷ૿ ڧΛ͢ΔεέʔϦϯάํ๏ ϒϩοΫνΣʔϯͷར఺Λ׆༻ͭͭ͠ɺϒϩοΫνΣʔϯͱ͸૬ ޓ࡞༻Λසൟʹ͠ͳ͍ॲཧ૚Λઃ͚ͯૹۚॲཧΛ࣮ߦ͢Δ
17. ͍Ζ͍Ζͳղܾࡦ ΦϯνΣʔϯଆ ผͷϒϩοΫνΣʔϯʹॲཧΛԡ͠΍Δ αΠυνΣʔϯ/υϥΠϒνΣʔϯ τϥϯβΫγϣϯͷσʔλͷҰ෦Λผ࿮ʹԡ͠΍Δ SegWit (Segregated Witness) ϒϩοΫαΠζΛେ͖͘͢Δ ϏοάϒϩοΫ ϒϩοΫͷ఻ୡํ๏ͷվળɺGraphen τϥϯβΫγϣϯͷαΠζΛখ͘͢͞Δ γϡϊΞॺ໊(Schnorr Signature) ࢖Θͳ͍τϥϯβΫγϣϯεΫϦϓτΛল͘ɺ Graftroot ະ࢖༻τϥϯβΫγϣϯΞ΢τϓοτҎ֎Λ࡟আ͢Δ uTreexo MimbleWimble (grin, beam) … ΦϑνΣʔϯଆ ϥΠτχϯάωοτϫʔΫ Ethereum(ϥΠσϯωοτϫʔΫɺϚΠΫϩϥΠσ ϯ)
18. #MPDLDIBJO
    DPOOFDUFE
    UP
    #JUDPJO ;DBTI
    
    #MPDLDIBJO &UIFSFVN
    #MPDLDIBJO #JUDPJO
    
    #MPDLDIBJO ʜ -JHIUOJOH
    /FUXPSL "UPNJD
    4XBQ 1BZQBM 7JTB $SPTT
    #MPDLDIBJO #MPDLDIBJO
    DPOOFDUFE
    UP
    TPNF
    CMPDLDIBJOT 3BJEFO
    /FUXPSL ΦϯνΣʔϯଆ ΦϑνΣʔϯଆ 4JEFDIBJO ϒϩοΫνΣʔϯ֎ ֤ٕज़ͷؔ࿈Πϝʔδ *OUFSMFEHFS
19. ϥΠτχϯάωοτϫʔΫʁ ಛ௃Λ̍ͭ̍ͭઆ໌͠·͢ɻ
20. ϥΠτχϯάωοτϫʔΫʁ جຊతͳΞΠσΞ̍ ຖճϒϩοΫνΣʔϯʹॻ͖ࠐΉͷͰ͸ͳ͘ɺ࠷ ॳͷঢ়ଶͱ࠷ޙͷঢ়ଶ(ਖ਼ຯ)͚ͩΛॻ͖ࠐΊ͹ྑ͍ ͷͰ͸ʁ Blockchain 10000ԁ 10000ԁ 5000ԁ 15000ԁ
21. ϥΠτχϯάωοτϫʔ Ϋʁ جຊతͳΞΠσΞ̍ ຖճऔҾΛϒϩοΫνΣʔϯʹॻ͖ࠐΉͷͰ͸ͳ͘ɺ֤औҾͷ ݁Ռͱͯ͠ਖ਼ຯͷ͓ۚΛ࠷ޙʹϒϩοΫνΣʔϯʹॻ͖ࠐΉ ͜ΕΛͰ͖ΔΑ͏ʹ͢ΔೋऀʹΑΔ࠷খߏ੒୯ҐΛνϟωϧͱ ͍͏ɻ νϟωϧ͸HTLC(Hashed Time Lock Contractɺϋογϡ෇͖࣌ؒ ੍ݶίϯτϥΫτ)Λ࢖ͬͯ࡞Δ ࠷ऴঢ়ଶΛϒϩοΫνΣʔϯʹॻ͖ࠐΉ·Ͱ͸ɺ྆ऀͷ߹ҙͷ ্Ͱঢ়ଶͷߋ৽Λ͢Δ
22. ϥΠτχϯάωοτϫʔ Ϋʁ جຊతͳΞΠσΞ̍ νϟωϧΛ࡞ͬͨยํͷਓ͕ѱਓͰɺࣗ෼ͷૹۚΛͳ͔ͬͨ͜ͱʹ͍͕ͨͨ͠Ίʹɺ࠷ऴঢ়ଶͰ͸ͳ͍΋ͷΛҰํతʹϒϩο ΫνΣʔϯʹॻ͖ࠐΜͩΒͲ͏͢Δͷʁ ࠷ऴঢ়ଶͰ͸ͳ͍τϥϯβΫγϣϯʹ͸ɺѱਓଆʹର͢Δࢿۚ࢖༻੍࣌ؒݶ͕͔͔͍ͬͯ·͢ɻ ରͯ͠ɺળਓଆ͸ѱਓଆ͔Β΋ΒͬͨγʔΫϨοτΩʔΛ࠷ऴঢ়ଶͰ͸ͳ͍τϥϯβΫγϣϯʹରͯ͠࢖͏ͱɺνϟω ϧ্ʹ͋ͬͨѱਓͷࢿۚΛ௚ͪʹશͯୣ͑ΔΑ͏ʹͳ͍ͬͯ·͢ɻ γʔΫϨοτΩʔ͸࠷ऴঢ়ଶʹ྆ऀ͕߹ҙ͢Δࡍʹɺ྆ऀ͕औΓަΘ̍͢ݸલͷ΋ͷΛແޮԽ͢ΔͨΊͷΩʔ ͜ͷΑ͏ͳϖφϧςΟʔ͕͋ΔͨΊɺѱਓଆʹ͸૬खΛཪ੾ΔΠϯηϯςΟϒ͕ͳ͍ ѱਓଆͷཪ੾Γʹର͙ͯ͢͠ʹϖφϧςΟʔΛߦ࢖Ͱ͖ΔΑ͏ʹɺτϥϯβΫγϣϯΛৗʹ؂ࢹ͓͔ͯ͠ͳ͚Ε͹͍͚ͳ͍ Blockchain
23. ϥΠτχϯάωοτϫʔ Ϋʁ جຊతͳΞΠσΞ̍ ͜ͷνϟωϧͷ࡞ΓํΛL2 Penaltyͱݴ͍·͢ɻଞͷ νϟωϧͷ࡞Γํͱͯ͠ɺeltoo΋͋Γ·͢ɻ
24. ϥΠτχϯάωοτϫʔ Ϋʁ جຊతͳΞΠσΞ̎ ϒϩοΫνΣʔϯ΁ͷෛՙΛԼ͛ɺख਺ྉΛ҆͘͢ΔͨΊɺνϟωϧΛෳ਺ ͭͳ͍Ͱૹۚ͢Δ
25. ϥΠτχϯάωοτϫʔ Ϋʁ ஥հऀ͕͓ۚΛ౪ΊΔͷͰ͸ʁ ஥հऀBob͕͓ۚΛಘΔͨΊʹ͸ϓϨΠϝʔδͱݺ͹ΕΔจࣈྻ͕ͳ͍ͱ͍͚ ͳ͍ Bob͸͓ۚΛ஥հ͢Δͱ͍͏໿ଋ͸͢Δ͕ɺ໿ଋͨ࣌͠఺Ͱ͸ϓϨΠϝʔδΛ ϋογϡԽͨ͠ϓϨΠϝʔδϋογϡ͔࣋ͬͯ͠ͳ͍ͨΊɺ͓ۚΛ౪Ίͳ͍ ͜ΕΛ࣮ߦ͢ΔͨΊʹHTLCΛ࢖͏ ૹۚऀ डۚऀ "MJDF #PC $BSPM
26. ؆қతͳઆ໌ ૹۚऀ डۚऀ "MJDF #PC $BSPM ᶃ৚݅෇͖ૹۚ໿ଋ ᶄ৚݅෇͖ૹۚ໿ଋ ᶅૹۚ ᶆૹۚ
27. ϥΠτχϯάωοτϫʔ Ϋʁ ૹۚऀ डۚऀ "MJDF #PC $BSPM $BSPM
    ϓϨΠϝʔδ
    3 $BSPM
    ϓϨΠϝʔδϋογϡ
    )
28. ϥΠτχϯάωοτϫʔ Ϋʁ ૹۚऀ डۚऀ "MJDF #PC $BSPM $BSPM
    
    ϓϨΠϝʔδϋογϡ
    ) ᶃϓϨΠϝʔδϋογϡ)ૹ෇ UY
    XJUI
    )
    OFFE
    3
    UP
    VTF UY
    XJUI
    )
    OFFE
    3
    UP
    VTF ᶄ59
    XJUI
    )ૹ෇ UY
    XJUI
    )
    OFFE
    3
    UP
    VTF ᶅ59
    XJUI
    )ૹ෇ ᶆϓϨΠϝʔδ3ૹ෇ 3 ᶇϓϨΠϝʔδ3ૹ෇ 3 $BSPM
    
    ϓϨΠϝʔδ
    3 ໿ଋ͸͢Δ͚Ͳ౪Ίͳ͍ Carol͸ R͕͋Δ͔Β ड͚औΕΔ
29. ϥΠτχϯάωοτϫʔ Ϋʁ Carol͕ҙ஍ѱͰɺϓϨΠϝʔδRΛ͘Εͳ͔ͬͨΒBob͸Carolʹ͓ۚΛୣΘΕͯऴΘ Γʁ ڠྗతνϟωϧΫϩʔζʹ͢Δ৔߹ɺ૬ख͔Βࢧ෷͍தͷ΋ͷ(in-flight HTLC)ͷϓ ϨΠϝʔδRΛ΋ΒΘͳ͍ͱԠ͡ͳ͍Α͏ʹ͢Δ Carol͕ͣͬͱRΛ౉ͣ͞ҰํతʹνϟωϧΫϩʔζ͓ۚ͠Λ࢖ͬͨ৔߹ɺϓϨΠ ϝʔδR͸ύϒϦοΫϒϩοΫνΣʔϯ্Ͱެ։͞ΕΔͨΊɺͦΕΛ࢖ͬͯBob ͸Alice͔Β͓ۚΛಘΔɻͨͩ͠ɺ͕͔͔࣌ؒΔɻ Carol͕ͣͬͱRΛ౉ͣ͞ɺ͔͠΋͓ۚΛ࢖Θͳ͔ͬͨ৔߹ɺBob͸͋Β͔͡Ίઃ ఆ͓͍ͯͨ࣌ؒ͠Ҏ߱ʹͳΕ͹͓ۚΛऔΓ໭ͤΔ༏ઌݖ͕͋Δɻͨͩ͠ɺ͕࣌ؒ ͔͔Δɻ ૹۚऀ डۚऀ "MJDF #PC $BSPM
30. ϥΠτχϯάωοτϫʔ Ϋʁ ϊʔυ ϊʔυ ϊʔυ*% ϊʔυ νϟωϧ ϊʔυ νϟωϧ νϟωϧ νϟωϧ ϊʔυ ϊʔυ*% ϊʔυ*% ϊʔυ*% ϊʔυ νϟωϧ ϊʔυ*% νϟωϧ ϊʔυ ϊʔυ*% ͷେ͖͞͸νϟωϧʹ৐͍ͬͯΔϏοτίΠϯͷྔ
31. ٕज़ৄࡉ ٕज़ৄࡉʹ͍ͭͯ͸ͪ͜ΒΛࢀর͍ͩ͘͞(ӳޠ) 2017೥6݄ʹΠεϥΤϧͷςϧΞϏϒͰࢲ͕࿩ͨ࣌͠ ͷࢿྉ https://www.slideshare.net/takayaimai/lightning- network-in-tel-aviv-israel ࠷৽࣮૷͔Β͸গ͠ဃ཭͕͋Γ·͕͢ɺجຊతͳಈ࡞ ݪཧ͸ಉ͡Ͱ͢ɻ
32. 2, ͳͥ͜ͷྖҬʹڵຯΛ ͍࣋ͬͯΔͷ͔ʁ
33. ϚΠΫϩϖΠϝϯτ w ̍औҾ͋ͨΓԁະຬ
    w ख਺ྉະຬ
    w શੈքͰඵؒԯऔҾҎ্
    w ݱۚ ϏοτίΠϯ औҾ
    w ύϒϦοΫ11ωοτϫʔΫ
34. ϚΠΫϩϖΠϝϯτ vs ΫϨδοτΧʔυ w ̍औҾ͋ͨΓԁະຬ
    
    ਺ඦԁҎ্
    w ख਺ྉະຬ
    
    Ҏ্
    w શੈքͰඵؒԯऔҾҎ্
    
    ඵؒສऔҾҎԼ
    w ݱۚ ϏοτίΠϯ औҾ
    
    ϙΠϯτͳͲൃߦओମͷ %#্ͷ਺ࣈ
    w ύϒϦοΫ11ωοτϫʔΫ
    
    ൃߦओମ͕ఏڙ͢Δ αʔό
35. ਓ͕ؒ࢖͏΋ͷʁ w ਓؒ͸൥ࡶͳ΋ͷ͕ݏ͍ͳͨΊɺҰϲ݄Ͱ·ͱΊ͓ͯࢧ෷͍͢Δɻ ܞଳձࣾͳͲɻͦͷͨΊʹऔҾ૬खͱࣄલʹܖ໿Λ݁Ϳ
    w ϥΠτχϯάωοτϫʔΫͰ͸औҾҰճҰճͰࢧ෷͍͕׬͍ྃͯ͠ ͘
    w Ұϲ݄Ͱ·ͱΊ͓ͯࢧ෷͍͕ফ͑Δ͜ͱ͸ͳ͍͕ɺػցಉ࢜ͷԁ ະຬͷࢧ෷͍ʹ͍ͭͯ͸"*Λ௨ͯ͡উखʹ΍ΓͱΓ
    w ྫ
    w ࣗಈंಉ࢜ *P5 ͕উखʹ΍ΓͱΓΛͯ͠ɺઌʹߦ͖͍ͨࣗಈं ͕ɺಓΛৡͬͯ΋͍͍ࣗಈंʹ਺ԁΛ෷ͬͯɺಓΛৡͬͯ΋Β͏
36. উखʹ(SBDPOFରஊ
    7PM
    
    IUUQTHSBDPOFDPKQWPM ϥΠτχϯάωοτϫʔΫ͸ কདྷػց͕ओʹ࢖͏ͷͰ͸ʁ ਓؒ͸ػցͷಈ͖ํ͸ ࢦࣔ͢Δ΋ͷͷ ࠷దԽ͸AIଆʹ೚ͤΔ ݄͋ͨΓ5000ԁ·ͰͳΒ ࢖ͬͯྑ͍ͱ͔
37. தԝूݖతͳ΋ͷ $FOUSBMJ[FE
    WT
    ඇதԝूݖతͳ΋ͷ %FDFOUSBMJ[FE w কདྷతʹ͜ΕΒ͸ɺಘҙ෼໺͝ͱʹ෼͔Εͯଘࡏ͍ͯ͘͠
    w $FOUSBMJ[FE
    w ϢʔβαϙʔτΛඞཁͱ͢Δ
    w தԝʹΑΔݫ֨ͳ؂ࢹମ੍Λඞཁͱ͢Δ
    w %FDFOUSBMJ[FE
    w །Ұͷ؅ཧओମΛඞཁͱ͠ͳ͍
    w ΦʔϓϯιʔεϓϩδΣΫτ
    w ͲͪΒ͕͍͍͔ͱࢥ͏͔͸ਓͦΕͧΕɻࠓ·Ͱ͸΄΅தԝूݖతͳ΋ͷ͔͠ͳ͔ͬͨɻݸਓ͕উखʹબ΂Δ Α͏ʹͳΔͷ͕Α͍ঢ়ଶɻ
    w ൿີ伴ΛݸʑͰ؅ཧ͢Δͷ͕҉߸௨՟ͷجຊతͳߟ͑ํ
    w ͔͠͠ݱ࣮͸ɺ༬͔Γࢿ࢈ͷݫ֨ͳ؂ࢹମ੍͕ෑ͔Εͨɺ·ͨ͸อݥ౳͕੔උ͞ΕͨԾ૝௨՟औҾॴʹ ࢿۚΛஔ͖ɺ؅ཧΛҕୗ͍ͨ͠ਓ΋͍Δ
38. ɾݸਓͰ
    11ωοτϫʔΫΛ ௨ͯ͠ࢿۚ؅ཧ
    ɾ෼ࢄܕऔҾॴ Ծ૝௨՟औҾॴΛ
    ར༻ ඇதԝूݖత தԝूݖత ݸਓͰ
    11ωοτϫʔΫΛ ௨ͯ͠ࢿۚ؅ཧ ʁʁʁ ηΧϯυϨΠϠʔ
    ϥΠτχϯάωοτϫʔΫ ϑΝʔετϨΠϠʔ
    ҉߸௨՟
39. தԝूݖతͳ΋ͷ $FOUSBMJ[FE
    WT
    ඇதԝूݖతͳ΋ͷ %FDFOUSBMJ[FE w ϥΠτχϯάωοτϫʔΫͷΑ͏ͳηΧϯυϨΠϠʔʹ͠ ͯ΋҉߸௨՟ͱಉ༷ʹɺશͯͷϊʔυ͕ର౳ͳཱ৔ʹ͋Δ ωοτϫʔΫΛ໨ࢦ͢΂͖
    w ͔͠͠ɺϥΠτχϯάεϚϗΞϓϦ༻ͷऔҾ؂ࢹͳͲதԝ ूݖతͳ΋ͷ͕͋Δఔ౓ࠞ͡Δͷ͸࢓ํ͕ͳ͍͠ɺ͕͜͜ ·ͩ͜ͷੈքʹଘࡏ͠ͳ͍࣍ͷऩӹݯʹͳΔՄೳੑ͕͋Δ
    w ͨͩ͠ɺதԝूݖతͳ΋ͷͱඇதԝूݖతͳ΋ͷΛݸਓ͕ બ΂Δͱ͍͏ͷ͕ॏཁ
40. ϕʔγοΫΠϯΧϜʁ w ݸਓࢿຊओٛ΁Ҡߦ
    w ࢿຊओٛ
    
    ࣗ෼͕͍࣋ͬͯΔٕज़·ͨ͸౔஍ͳͲΛجʹ͓ͯۚ͠ΛՔ͍ Ͱ΋Α͍ͱ͢Δߟ͑ํ ʮαϐΤϯεશ࢙ʯΑΓ
    w Χʔετ੍౓ͷΑ͏ͳ৬ۀݻఆͱͷରൺ
    w ࠓ·Ͱେ͖ͳࢿۚΛ࣋ͪ޻৔Λ࣋ͯΔऀ͚͕ͩػցʹΑΔརӹੜΈग़͕͠ Ͱ͖ͨ
    w Ϋϥ΢υαʔϏεɺϋʔυ΢ΣΞ BSEVJOPͳͲ ͕҆Ձʹͳ͖ͬͯͨத Ͱɺࠓ·ͰͷΑ͏ʹେ͖ͳࢿۚΛ࣋ͭऀ͚͕ͩػցʹΑΔརӹੜΈग़͕͠ Ͱ͖Δͱ͍͏ͷ͸มΘ͍ͬͯ͘ͷͰ͸ͳ͍͔
    w ϕʔγοΫΠϯΧϜͷΑ͏ʹɺϚΠχϯάͰͷίϯηϯαεߏ੒ߩݙɺϥΠ τχϯάωοτϫʔΫͷߏ੒ߩݙɺτʔΫϯΤίϊϛʔͳͲʹΑͬͯɺݸਓ ͷऩೖݯ͕ଟ༷Խ͍ͯ͘͠ͷͰ͸ͳ͍͔
41. 3, ࠓͷঢ়گ͸ʁϏδωεͰ ࢖͑Δͷ͸͍͔ͭΒʁ
42. ϥΠτχϯάωοτϫʔΫ ϊʔυϓϩδΣΫτҰཡ $PNQBOZ
    0SHBOJ[BUJP O -JHIUOJOH
    -BCT .*5
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    #MVF
    XBMMFU $PNNJUPST 0MBPMVXB
    0TVOUPLVO
    $POOFS
    'SPNLOFDIU 5IBEEFVT
    %SZKB
    7BSVOSBN
    (BOFTI 3VTUZ
    3VTTFM
    $ISJTUJBO
    %FDLFS 1JFSSF.BSJF
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    'BCSJDF
    %SPVJO
    EQBE $ISJTUPQIFS
    +F⒎SFZ OBZVUBVFOP
    OBZVUB HPOEP 7MBEJTMBW
    .FMOJL
    NLM
    &WHFOJZ
    4DIFSCJOB "OUPO
    ,VNBJHPSPE TLJ *HPS
    ,PSTBLPW
    -BOHVBHF (P (P $ 4DBMB /PEF
    KT $ 3VTU 4DBMB /PEFKT pSTU
    DPNNJU
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    DPNNJU
    +45          HJUIVC IUUQT HJUIVCDPN MJHIUOJOHOFU XPSLMOE IUUQT HJUIVCDPN NJUEDJMJU IUUQT HJUIVCDPN &MFNFOUT1SP KFDU IUUQT HJUIVCDPN "$*/2FDMBJS IUUQT HJUIVCDPN CDPJOPSH QMBTNB IUUQT HJUIVCDPN OBZVUBDP QUBSNJHBO IUUQT HJUIVCDPN -JHIUOJOH1FB DIMQE IUUQT HJUIVCDPN CUDPOUSBDU MOXBMMFU IUUQT HJUIVCDPN #MVF8BMMFU #MVF8BMMFU PUIFST BOESPJE
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46. https://twitter.com/LNstats/status/1097366414825013248
47. ֊૚ߏ଄ରԠؔ܎ Blockchains Lightning Payment Channel Routing Algorithm Atomic Multi-Path Payments ??? ෺ཧ૚ ϦϯΫ૚ ωοτϫʔΫ૚ τϥϯεϙʔτ૚ ΞϓϦέʔγϣϯ૚ Sphinx ϓϨθϯςʔγϣϯ૚ ϥΠτχϯά Πϯλʔωοτ HTLC ηογϣϯ૚
48. ֊૚ߏ଄ରԠؔ܎ OSIࢀরϞσϧͱΠϯλʔωοτͷߏ଄Λͦͷ··ରൺ͸Ͱ͖ ͳ͍΋ͷͷɺΞϓϦέʔγϣϯϨΠϠʔ෦෼͕·ͩ଍Γͳ͍ɻ ͜͜͸Լͷ֊૚ͷৄࡉΛ஌Βͳͯ͘΋ɺαΫοͱϥΠτχϯά ωοτϫʔΫΛ࢖͑ΔΑ͏ʹ͢Δϓϩτίϧ͕དྷΔɻ ݸʑͷ֊૚͸ɺҰࣾಠ઎Ͱ͸ͳ͘ݸʑ͕όϥόϥʹಈ͘ͷ͕๬ ·͍͠ɻͱ͍͏ͷ͸ɺ૊Έ߹Θͤͷ࢓ํ͕ࣗ༝ʹͳΓԠ༻ൣғ ͕രൃతʹ޿͘ͳΔ͔ΒɻҰ͚ࣾͩͩͱͦͷձࣾͷརӹʹҾͬ ுΒΕͯരൃతʹ࢖ΘΕΔΑ͏ʹͳΒͳ͍ɻ
49. ϥΠτχϯά੟ՐϦϨʔ https://www.takethetorch.online/Torch
50. ϥΠτχϯά੟ՐϦϨʔ 2019/01/20͔Β࢝·ͬͨ੟ՐϦϨʔ ϥΠτχϯάωοτϫʔΫͷೝ஌޲্ͱɺ̍ճ͋ͨΓૹۚՄೳֹͷٕज़త޲ ্Λ໨తͱͨ͠΋ͷ 10ສsatoshi͔Β࢝·ͬͯɺड͚औͬͨਓ͸1ສsatoshi(40ԁ͘Β͍)Λ௥Ճͯ͠ ࣍ͷਓʹૹۚ͢Δ(੟ՐΛ౉͢) 439ສsatoshi(17000ԁ͘Β͍)͕ΰʔϧͰɺ͜ͷ͓ۚ͸ϕωζΤϥʹد෇͞ΕΔ ̍ສԁ͸αΫαΫͱϥΠτχϯάωοτϫʔΫ্Λಈ͘·Ͱʹٕज़ɺωοτ ϫʔΫ͕੒௕
51. ϥΠτχϯά੟ՐϦϨʔ
52. ࠓޙͷൃల 2019೥ʹೖͬͯ࢖͍΍͍͢ϥΠτχϯά΢ΥϨοτ͕୆಄͖͍ͯͯ͠Δɻ ͜Ε͸ΦϯϥΠϯ΢ΥϨοτͰɺαʔόʹൿີ伴Λஔ͍͓ͯ͘΢ΥϨο τɻ͜ͷͨΊɺΦϯϥΠϯ΢ΥϨοτʹ͋Δ͓ۚ͸؆୯ʹӡӦऀʹ౪· ΕΔՄೳੑ͕͋Δɻ ϢʔβϏϦςΟΛߟ͑ͨ࣌ͷա౉తͳ΋ͷͱͯ͠͸ΞϦͰ͸͋Δɻ ϥΠτχϯά΢ΥϨοτ͕࢖͍΍͘͢ͳΔͱɺͦΕͱඥ෇͚ͨαʔϏε͕ ొ৔͠΍͘͢ͳΔ ͦΕͳΓͷϏδωεن໛ʹͳΔαʔϏε͸2020೥ʹొ৔͔ʁʁ
53. 4, কདྷ໘നͦ͏ͳٕज़ʹ͸ ͲΜͳ΋ͷ͕͋Δʁ
54. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़΍ϓϩδΣΫτ Atomic Multi-Path Payments(ෆՄ෼ͳෳ਺ܦ࿏ࢧ෷͍ɺϥΠτχϯάωοτϫʔΫඇதԝूݖԽ/ଟֹૹۚ) eltoo(νϟωϧߋ৽ͷγϯϓϧԽ) Splicing(νϟωϧσϙδοτͷಈతมߋ) Outsourcing WatchTower (τϥϯβΫγϣϯ؂ࢹͷ֎෦Խ/ҕୗ) Olympus Server(νϟωϧঢ়ଶͷόοΫΞοϓ෼ࢄҕୗͱҕ೚ΠϯηϯςΟϒઃܭɺϖΠϝϯτϧʔτҕୗ) Atomic Swap(ϥΠτχϯάΛ࢖ͬͨϒϩοΫνΣʔϯؒෆՄ෼ίΠϯަ׵) Streaming Payments (ϥΠτχϯάૹۚͷ͞ΒͳΔޮ཰ԽɺૹۚϧʔτҰճҰճดͣ͡ʹϧʔτΛ࢖͍ճ͢) xCrow Protocol (ΦϑνΣʔϯٕज़Λ༻͍ͨDEX(ඇதԝूݖతऔҾॴ)ߏ੒ٕज़) ੥ٻॻͳ͠ͷϥΠτχϯάϖΠ spontaneous payments without invoice
55. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̍
56. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̍ AMP: Atomic Multi-Path Payments(ෆՄ෼ͳෳ਺ܦ࿏ࢧ෷͍) ݱঢ় ૹۚऀ͔Βडۚऀ΁ͷૹۚܦ࿏͸̍ͭ ྫ͑͹ɺ100ԁΛૹΓ͍ͨ৔߹ɺૹۚऀ͔Βडۚऀ΁ͷܦ࿏ͷશͯͷνϟωϧ͕100ԁૹۚՄೳͰͳ͍ͱ ͍͚ͳ͍ ໰୊఺ ·ͱ·͓ͬͨۚΛૹΕͳ͍ ̍ສԁͳͲ͋Δఔ౓·ͱ·͓ͬͨۚ͸ɺϥΠτχϯάωοτϫʔΫΛ࢖Θͳ͍΄͏͕͍͍ͱ͸ࢥ͍ ·͢ νϟωϧʹଟ͘ͷ͓ۚΛஔ͍͓ͯ͘ͷ͸ࢿ͕ۚ๛͔ͳਓ -> தԝूݖԽ 1ͭͷૹۚܦ࿏ʹґଘͯ͠͠·͏ ૹۚܦ࿏্ͷϊʔυ͕ૹۚதʹ൓Ԡ͠ͳ͘ͳΔͳͲ໰୊͕ى͖ͨ৔߹ɺૹ్͕ۚதͰࢭ·ͬͯ͠ ·ͬͯಈ͔ͳ͘ͳΔͱ͍͏͜ͱ͸ͳ͍͕ɺૹۚ׬ྃ·Ͱ͕͔͔࣌ؒͬͯ͠·͏
57. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̍ AMP: Atomic Multi-Path Payments(ෆՄ෼ͳෳ਺ܦ࿏ࢧ෷͍) ղܾํ๏ ̍ճͷૹۚΛɺෳ਺ͷૹۚܦ࿏ʹ෼ׂͯ͠ૹΔ ྑ͍఺ ૹۚܦ࿏ͷબ୒ࢶ͕΋ͬͱ૿͑ɺϥΠχϯάωοτϫʔΫશମͷϦιʔεΛ͏·͘࢖͑Δ νϟωϧʹେ͖ͳ͓ۚΛஔ͍͓͔ͯͳͯ͘΋ɺϥΠτχϯάωοτϫʔΫʹߩݙͰ͖Δ ѱ͍఺ ϥΠτχϯάωοτϫʔΫશମͰͷૹۚॲཧ਺͸૿͑ΔͨΊɺ෼ׂ਺Λେ͖͗͘͢͠ΔͱϥΠτ χϯάωοτϫʔΫ͕๞࿨ͯ͠͠·͏
58. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̍ AMP: Atomic Multi-Path Payments(ෆՄ෼ͳෳ਺ܦ࿏ࢧ෷͍) ਐల۩߹ ΞτϛοΫੑͷఆٛ΍࠷దͳ࣮૷ํ๏ʹ͍ͭͯɺlightning-devϝʔϦϯάϦετͰٞ࿦த ·ͩϥΠτχϯάωοτϫʔΫRFCʹ͸ͳ͍ͬͯͳ͍ ͜Ε͸ɺݸਓతʹScaling Bitcoin Workshop 2017 @ Stanford Univ. ʹఏҊ͍ͯͨ͠΋ͷ(࢒೦ͳ͕ΒτʔΫ ʹ͸࠾༻͞Ε·ͤΜͰ͕ͨ͠ɻɻ) https://github.com/takaya-imai/packetization_for_paymentchannel
59. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̎ eltoo: ߋ৽ํ๏ͷ͞ΒͳΔγϯϓϧԽ
60. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̏ Splicing (Splice-in, Splice-out) νϟωϧσϙδοτͷಈతมߋ Splice-in: σϙδοτΛ૿΍͢ Splice-out: σϙδοτΛݮΒ͢ Funding TX Commitment TX ௨ৗ Funding TX Commitment TX2 Splicing Funding TX2
61. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̐ Outsourcing WatchTower τϥϯβΫγϣϯ؂ࢹͷ֎෦Խ/ҕୗ νϟωϧΛҡ࣋͢Δʹ͋ͨͬͯɺνϟωϧ૬ख͕ෆਖ਼Λ͠ͳ͍Α͏ʹνϟωϧ͕ উखʹด͡ΒΕͳ͍͔Λ؂ࢹ͠ͳ͍ͱ͍͚ͳ͍ εϚϗ্ͷϥΠτχϯάΞϓϦͷ৔߹ɺεϚϗ͕յΕΔ·ͨ͸ి஑͕੾ΕΔͱ ͍ͬͨ৔߹ʹ͜ͷτϥϯβΫγϣϯ؂ࢹ͕Ͱ͖ͳ͘ͳΔͨΊɺ؂ࢹͷ֎෦Խ/ҕ ୗ͕ඞཁʹͳΔ ಛʹɺडۚͷࡍʹ͜ͷτϥϯβΫγϣϯ؂ࢹ͕ॏཁɻݱࡏ΄ͱΜͲͷϥΠτχϯ άΞϓϦͰૹۚͷΈ͔͠Ͱ͖ͳ͍ͷ͸ɺૹۚʹτϥϯβΫγϣϯ؂ࢹ͕ෆཁͳͨ Ίɻ
62. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̑ Olympus Server νϟωϧঢ়ଶόοΫΞοϓͷ෼ࢄҕ೚ͱҕ೚ΠϯηϯςΟϒઃܭҕୗɺϖΠϝϯτϧʔτҕୗ http://lightning-wallet.com/what-does-olympus-server-do#what-does-olympus-server-do νϟωϧΛ։͘ͱOlympus Serverʹνϟωϧঢ়ଶΛ҉߸Խͨ͠ঢ়ଶͰૹ෇͠όοΫΞοϓख਺ྉΛ΋Β͏ Olympus Server͕ཪ੾ΔՄೳੑ(νϟωϧঢ়ଶΛ໭ͯ͘͠Εͳ͍)͕͋ΔͨΊɺෳ਺ͷOlympus Serverʹνϟ ωϧঢ়ଶΛૹΔ෼ࢄҕୗͷํ͕ྑ͍Α͏ʹࢥ͏ ϞόΠϧ΢ΥϨοτ༻ʹɺকདྷతʹϖΠϝϯτϧʔτ෼ࢄҕୗͰ͖Δͱྑ͍
63. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̒ Atomic Swaps ϥΠτχϯάΛ࢖ͬͨϒϩοΫνΣʔϯؒෆՄ෼ίΠϯަ׵
64. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̒ Atomic Swaps ϥΠτχϯάΛ࢖ͬͨϒϩοΫνΣʔϯؒίΠϯަ׵ ϊʔυA ϊʔυB ϊʔυA BTCνϟωϧ ETHνϟωϧ ϊʔυB͸ɺBTCͱETH྆ํΛ ࣋ͨͳ͍ͱ͍͚ͳ͍
65. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̓ Streaming Payments ϥΠτχϯάૹۚͷ͞ΒͳΔޮ཰ԽɺૹۚϧʔτҰճҰճดͣ͡ʹ ϧʔτΛ࢖͍ճ͢ ͜͜Λ஗Ԇͤ͞Δ͜ͱͰ ϓϨΠϝʔδϋογϡΛ࢖͍·Θ͠ TX with HͷૹֹۚΛ Կ౓΋ॻ͖׵͑Δ
66. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̔ ੥ٻॻͳ͠ͷϥΠτχϯάϖΠ ड͚औΓଆ͕੥ٻॻΛૹΒͳͯ͘΋ɺࢧ෷͍͕Ͱ͖Δ
67. ϥΠτχϯάʹڵຯ͕͋Δํ͸͝ࢀՃ͍ͩ͘͞ɻ
68. ݸਓϦϑΝϨϯε w աڈϓϨθϯࢿྉ
    w IUUQTXXXTMJEFTIBSFOFUMBXNOQSFTFOUBUJPOT
    w IUUQTXXXTMJEFTIBSFOFUUBLBZBJNBJ QSFTFOUBUJPOT
    w IUUQTTQFBLFSEFDLDPNUBLBZBJNBJ
    w -JOLFEJO
    w IUUQTXXXMJOLFEJODPNJOUBLBZBJNBJB
69. fin.