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Blockchain技術勉強会 #Lightning Networkの技術と最前線

Blockchain技術勉強会 #Lightning Networkの技術と最前線

東大ブロックチェーン開発団体BitPenguin主催
Blockchain技術勉強会@EastVenturesオフィス
2018/05/26

693bebf0f9f34ee94dd2c873a6888418?s=128

Takaya Imai

May 26, 2018
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  1. Lightning Networkͷٕज़ͱ࠷લઢ 5BLBZB*NBJ $&0!'SPOUJFS1BSUOFST--$ $PGPVOEFSBOE$50!6OJUFE#JUDPJOFST*OD ౦େϒϩοΫνΣʔϯ։ൃஂମ#JU1FOHVJO #MPDLDIBJOٕज़ษڧձ!&BTU7FOUVSFTΦϑΟε 

  2. ࣗݾ঺հ ϑϩϯςΟΞύʔτφʔζ߹ಉձࣾ ୅දCEO United Bitcoiners Inc. ڞಉ૑ۀऀˍऔక໾CTO ϚελϦϯάϏοτίΠϯɺ຋༁ऀ୅ද ੈքͰॳΊͯͷɺ೔ຊޠʹΑΔϏοτίΠϯɾϒϩοΫνΣʔϯͷৄࡉ ٕज़ॻ

    શମͷׂ̕Λ຋༁ 2016/7/14ग़൛ ిࢠॻ੶൛(kindle)΋ ΦʔϓϯΤσΟγϣϯ൛ https://www.bitcoinbook.info ౦ژେֶ٬һݚڀһ
  3. ࣗݾ঺հ όοΫάϥ΢ϯυ ৽ׁେֶେֶӃɹૉཻࢠཧ࿦෺ཧɹത࢜(ཧ) ΧΧΫίϜ ݕࡧΤϯδϯ։ൃɹݕࡧαʔόΫϥελߏஙӡ༻ɹେن໛σʔλॲཧɹػցֶशɹ ը૾ೝࣝ σʔλλϫʔגࣜձࣾɹ୅දऔక໾

  4. ϥΠτχϯάωοτϫʔΫʁ

  5. ϥΠτχϯάωοτϫʔΫʁ 2015೥2݄ʹJoseph PoonͱThaddeus DryjaʹΑͬͯఏҊ͞ ΕͨϏοτίΠϯ্ͷηΧϯυϨΠϠʔٕज़ औҾख਺ྉΛ҆͘͢Δ͜ͱͱૹۚ଎౓Λ଎͘͢Δ͜ͱΛ໨ తͱ͍ͯ͠Δ “νϟωϧ”ͱ͍͏̎ऀؒૹۚܦ࿏ʹΑΔP̎PωοτϫʔΫ Ͱ͋Γɺෳ਺ͷνϟωϧΛܦ༝ͯ͠ૹۚ͢Δ νϟωϧऔҾ૬खɺૹۚ஥հऀΛ৴༻͢Δඞཁ͕ͳ͍

  6. ϏοτίΠϯͷ εέʔϦϯά໰୊ εέʔϦϯά໰୊ ඵؒऔҾ਺͕̓݅ఔ౓ 1MB / 256byte /10෼/60ඵ = 6.8औҾຖඵ

    Segwit (Segregated Witness)༗ޮԽޙɺ̍ϒϩοΫʹ̍MBΑΓೖΔΑ͏ʹͳͬͨͨΊɺඵؒऔҾ਺ ͸લΑΓվળ ϒϩοΫνΣʔϯαΠζͷ૿େ ̍̒̔GB (2018/5/26ݱࡏ) τϥϯβΫγϣϯख਺ྉͷߴಅ ૹ෇͞ΕΔτϥϯβΫγϣϯͷ਺͕૿͑ΔͱɺϚΠφʔ͸ΑΓख਺ྉͷߴ͍τϥϯβΫγϣϯ͔Β ϒϩοΫʹऔΓࠐ΋͏ͱ͢Δ ࠷ۙ͸̍ճͷૹۚ͋ͨΓ20ԁఔ౓(5satoshi/byte) 2017೥12݄͸ϐʔΫͰ̍ճͷૹۚ͋ͨΓ4000ԁఔ౓ͷͱ͖΋͋ͬͨ
  7. None
  8. 168GB

  9. 4.6tx/sec

  10. 4000ԁ͘Β͍/tx

  11. ͍Ζ͍Ζͳղܾࡦ ΦϯνΣʔϯεέʔϦϯά औҾຖʹϒϩοΫνΣʔϯʹॻ͖ࠐΉ͜ͱΛલఏͱͯ͠ɺॲཧೳ ྗͷ૿ڧΛ͢ΔεέʔϦϯάํ๏ ΦϑνΣʔϯεέʔϦϯά ϒϩοΫνΣʔϯʹॻ͖ࠐΉճ਺ΛݮΒ͢͜ͱͰɺॲཧೳྗͷ૿ ڧΛ͢ΔεέʔϦϯάํ๏ ϒϩοΫνΣʔϯͷར఺Λ׆༻ͭͭ͠ɺϒϩοΫνΣʔϯͱ͸૬ ޓ࡞༻Λසൟʹ͠ͳ͍ॲཧ૚Λઃ͚ͯૹۚॲཧΛ࣮ߦ͢Δ

  12. ͍Ζ͍Ζͳղܾࡦ ΦϯνΣʔϯଆ ผͷϒϩοΫνΣʔϯʹॲཧΛԡ͠΍Δ αΠυνΣʔϯ/υϥΠϒνΣʔϯ τϥϯβΫγϣϯͷσʔλͷҰ෦Λผ࿮ʹԡ͠΍Δ SegWit (Segregated Witness) ϒϩοΫαΠζΛେ͖͘͢Δ ϏοάϒϩοΫ

    ϒϩοΫͷ఻ୡํ๏ͷվળɺGraphen τϥϯβΫγϣϯͷαΠζΛখ͘͢͞Δ γϡϊΞॺ໊(Schnorr Signature) ࢖Θͳ͍τϥϯβΫγϣϯεΫϦϓτΛল͘ɺ Graftroot … ΦϑνΣʔϯଆ ϥΠτχϯάωοτϫʔΫ Ethereum(ϥΠσϯωοτϫʔΫɺϚΠΫϩϥΠσ ϯ)
  13. #MPDLDIBJO DPOOFDUFEUP #JUDPJO ;DBTI #MPDLDIBJO &UIFSFVN #MPDLDIBJO #JUDPJO #MPDLDIBJO ʜ

    -JHIUOJOH/FUXPSL "UPNJD 4XBQ 1BZQBM 7JTB *OUFS#MPDLDIBJO #MPDLDIBJO DPOOFDUFEUP TPNF CMPDLDIBJOT 3BJEFO/FUXPSL ΦϯνΣʔϯଆ ΦϑνΣʔϯଆ 4JEFDIBJO ϒϩοΫνΣʔϯ֎ ֤ٕज़ͷؔ࿈Πϝʔδ *OUFSMFEHFS
  14. Layer Blockchain Lightning Payment Channel Routing Algorithm Atomic Multi-Path Payments

    Lapps Physical Layer Link Layer Network Layer Transport Layer Application Layer Sphinx Presentation Layer Lightning Internet HTLC Session Layer
  15. ϥΠτχϯάωοτϫʔΫʁ ಛ௃Λ̍ͭ̍ͭઆ໌͠·͢ɻ

  16. ϥΠτχϯάωοτϫʔ Ϋʁ جຊతͳΞΠσΞ̍ ຖճऔҾΛϒϩοΫνΣʔϯʹॻ͖ࠐΉͷͰ͸ͳ͘ɺ֤औҾͷ݁Ռͱͯ͠ਖ਼ຯͷ͓ۚΛ࠷ޙʹ ϒϩοΫνΣʔϯʹॻ͖ࠐΉ ֓೦ྫ(ݫີʹ͸ͪΐͬͱҧ͍·͕͢) 1. A͞Μ͕B͞Μʹ1000ԁିͨ͠ 2. B͞Μ͕A͞Μʹ500ԁ෼͝൧୅Λग़ͨ͠

    3. ݁ہɺB͞Μ͸A͞Μʹ500ԁฦͨ͠ ͜ΕΛͰ͖ΔΑ͏ʹ͢ΔೋऀʹΑΔ࠷খߏ੒୯ҐΛνϟωϧͱ͍͏ɻ νϟωϧ͸HTLC(Hashed Time Lock Contractɺϋογϡ෇੍͖࣌ؒݶίϯτϥΫτ)Λ࢖ͬͯ࡞ Δ ࠷ऴঢ়ଶΛϒϩοΫνΣʔϯʹॻ͖ࠐΉ·Ͱ͸ɺ྆ऀͷ߹ҙͷ্Ͱঢ়ଶͷߋ৽Λ͢Δ
  17. 10000ԁ 2000ԁ 3500ԁ 4000ԁ 500ԁ

  18. ϥΠτχϯάωοτϫʔ Ϋʁ جຊతͳΞΠσΞ̍ νϟωϧΛ࡞ͬͨยํͷਓ͕ѱਓͰɺࣗ෼ͷૹۚΛͳ͔ͬͨ͜ͱʹ͍͕ͨͨ͠Ίʹɺ࠷ऴ ঢ়ଶͰ͸ͳ͍΋ͷΛҰํతʹϒϩοΫνΣʔϯʹॻ͖ࠐΜͩΒͲ͏͢Δͷʁ ࠷ऴঢ়ଶͰ͸ͳ͍τϥϯβΫγϣϯʹ͸ɺѱਓଆʹର͢Δࢿۚ࢖༻੍࣌ؒݶ͕͔͔ͬ ͍ͯ·͢ɻ ରͯ͠ɺળਓଆ͸ѱਓଆ͔Β΋ΒͬͨγʔΫϨοτΩʔΛ࠷ऴঢ়ଶͰ͸ͳ͍τϥϯβ Ϋγϣϯʹରͯ͠࢖͏ͱɺνϟωϧ্ʹ͋ͬͨѱਓͷࢿۚΛ௚ͪʹશͯୣ͑ΔΑ͏ʹ ͳ͍ͬͯ·͢ɻ

    γʔΫϨοτΩʔ͸࠷ऴঢ়ଶʹ྆ऀ͕߹ҙ͢Δࡍʹɺ྆ऀ͕औΓަΘ̍͢ݸલͷ ΋ͷΛແޮԽ͢ΔͨΊͷΩʔ ͜ͷΑ͏ͳϖφϧςΟʔ͕͋ΔͨΊɺѱਓଆʹ͸૬खΛཪ੾ΔΠϯηϯςΟϒ͕ͳ͍ ѱਓଆͷཪ੾Γʹର͙ͯ͢͠ʹϖφϧςΟʔΛߦ࢖Ͱ͖ΔΑ͏ʹɺτϥϯβΫγϣϯΛৗ ʹ؂ࢹ͓͔ͯ͠ͳ͚Ε͹͍͚ͳ͍
  19. ϥΠτχϯάωοτϫʔ Ϋʁ جຊతͳΞΠσΞ̎ ϒϩοΫνΣʔϯ΁ͷෛՙΛԼ͛ɺख਺ྉΛ҆͘͢ΔͨΊɺνϟωϧΛෳ਺ ͭͳ͍Ͱૹۚ͢Δ

  20. ϥΠτχϯάωοτϫʔ Ϋʁ ஥հऀ͕͓ۚΛ౪ΊΔͷͰ͸ʁ ஥հऀBob͕͓ۚΛಘΔͨΊʹ͸ϓϨΠϝʔδͱݺ͹ΕΔจࣈྻ͕ͳ͍ͱ͍͚ ͳ͍ Bob͸͓ۚΛ஥հ͢Δͱ͍͏໿ଋ͸͢Δ͕ɺ໿ଋͨ࣌͠఺Ͱ͸ϓϨΠϝʔδΛ ϋογϡԽͨ͠ϓϨΠϝʔδϋογϡ͔࣋ͬͯ͠ͳ͍ͨΊɺ͓ۚΛ౪Ίͳ͍ ͜ΕΛ࣮ߦ͢ΔͨΊʹHTLCΛ࢖͏ ૹۚऀ डۚऀ

    "MJDF #PC $BSPM
  21. ؆қతͳઆ໌ ૹۚऀ डۚऀ "MJDF #PC $BSPM ᶃ৚݅෇͖ૹۚ໿ଋ ᶄ৚݅෇͖ૹۚ໿ଋ ᶅૹۚ ᶆૹۚ

  22. ϥΠτχϯάωοτϫʔ Ϋʁ ૹۚऀ डۚऀ "MJDF #PC $BSPM $BSPMϓϨΠϝʔδ 3 $BSPMϓϨΠϝʔδϋογϡ

    )
  23. ϥΠτχϯάωοτϫʔ Ϋʁ ૹۚऀ डۚऀ "MJDF #PC $BSPM $BSPM ϓϨΠϝʔδϋογϡ )

    ᶃϓϨΠϝʔδϋογϡ)ૹ෇ UYXJUI) OFFE3 UPVTF UYXJUI) OFFE3 UPVTF ᶄ59XJUI)ૹ෇ UYXJUI) OFFE3 UPVTF ᶅ59XJUI)ૹ෇ ᶆϓϨΠϝʔδ3ૹ෇ 3 ᶇϓϨΠϝʔδ3ૹ෇ 3 $BSPM ϓϨΠϝʔδ 3 ໿ଋ͸͢Δ͚Ͳ౪Ίͳ͍ Carol͸ R͕͋Δ͔Β ड͚औΕΔ
  24. 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
  25. ϥΠτχϯάωοτϫʔ Ϋʁ ϊʔυ ϊʔυ ϊʔυ*% ϊʔυ νϟωϧ ϊʔυ νϟωϧ νϟωϧ

    νϟωϧ ϊʔυ ϊʔυ*% ϊʔυ*% ϊʔυ*% ϊʔυ νϟωϧ ϊʔυ*% νϟωϧ ϊʔυ ϊʔυ*% ͷେ͖͞͸νϟωϧʹ৐͍ͬͯΔϏοτίΠϯͷྔ
  26. ϥΠτχϯάωοτϫʔΫ ϊʔυϓϩδΣΫτҰཡ $PNQBOZ 0SHBOJ[BUJPO -JHIUOJOH -BCT .*5%$* #MPDLTUSFBN "$*/2 CDPJOPSH

    /BZVUB 1SPEVDU /BNF MOE MJU MJHIUOJOHE FDMBJS QMBTNB QUBSNJHBO MOXBMMFU $PNNJUPST 5IBEEFVT %SZKB  +PTFQI 1PPO  0MBPMVXB 0TVOUPLVO 5IBEEFVT %SZKB 3VTUZ3VTTFM  $ISJTUJBO %FDLFS 1JFSSF.BSJF 1BEJPV  'BCSJDF %SPVJO  EQBE $ISJTUPQIFS +F⒎SFZ OBZVUBVFOP "OUPO ,VNBJHPSPET LJ -BOHVBHF (P (P $ 4DBMB /PEFKT $ 4DBMB pSTUDPNNJU +45        NBTUFS MBTUFTU DPNNJU +45        HJUIVC IUUQT HJUIVCDPN MJHIUOJOHOFU XPSLMOE IUUQT HJUIVCDPN NJUEDJMJU IUUQT HJUIVCDPN &MFNFOUT1SPK FDUMJHIUOJOH IUUQT HJUIVCDPN "$*/2FDMBJS IUUQT HJUIVCDPN CDPJOPSH QMBTNB IUUQT HJUIVCDPN OBZVUBDP QUBSNJHBO IUUQT HJUIVCDPN CUDPOUSBDU MOXBMMFU PUIFST BOESPJEBQQ
  27. ςετωοτ ࢲͷϊʔυ: btctest.lnetwork.tokyo (160.16.233.215)

  28. ϝΠϯωοτ ϦΞϧͳ͓͕ۚྲྀΕΔϥΠτχϯάωοτϫʔΫ 2018೥3݄22೔

  29. ϝΠϯωοτ 2018೥4݄24೔

  30. ࢲͷϊʔυ: btc.lnetwork.tokyo (153.126.136.98) pubkey: 028dcc199be86786818c8c32bffe9db8855c5fca98951eec99d1fa335d841605c2

  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. Layer Blockchain Lightning Payment Channel Routing Algorithm Atomic Multi-Path Payments

    Lapps Physical Layer Link Layer Network Layer Transport Layer Application Layer Sphinx Presentation Layer Lightning Internet HTLC Session Layer
  33. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़΍ϓϩδΣΫτ Atomic Multi-Path Payments(ෆՄ෼ͳෳ਺ܦ࿏ࢧ෷͍ɺϥΠτχϯάωοτϫʔΫඇதԝूݖԽ/ଟֹૹۚ) b+l wallet (ड͕ۚͰ͖Δݱࡏ།ҰͷϥΠτχϯά΢ΥϨοτ) eltoo(νϟωϧߋ৽ͷγϯϓϧԽ) Splicing(νϟωϧσϙδοτͷಈతมߋ)

    Data Loss Protection(νϟωϧঢ়ଶͷอଘ) Olympus Server(νϟωϧঢ়ଶͷόοΫΞοϓ෼ࢄҕୗͱҕ೚ΠϯηϯςΟϒઃܭ) Outsourcing WatchTower (τϥϯβΫγϣϯ؂ࢹͷ֎෦Խ/ҕୗ) Atomic Swap(ϥΠτχϯάΛ࢖ͬͨϒϩοΫνΣʔϯؒෆՄ෼ίΠϯަ׵) Streaming Payments (ϥΠτχϯάૹۚͷ͞ΒͳΔޮ཰ԽɺૹۚϧʔτҰճҰճดͣ͡ʹϧʔτΛ࢖͍ճ͢)
  34. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̍

  35. ஫໨͍ͯ͠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·͏
  36. ஫໨͍ͯ͠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๞࿨ͯ͠͠·͏
  37. ஫໨͍ͯ͠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
  38. ஫໨͍ͯ͠Δ ϥΠτχϯάϓϩδΣΫτ̎ εϚϗΞϓϦΛϥΠτχϯάωοτϫʔΫʹ डۚ΋Ͱ͖Δ lnwallet http://lightning-wallet.com

  39. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̎ ໘ന͍఺ τϥϯβΫγϣϯ؂ࢹͷ؆қԽ͕࣮૷ͯ͋͠Γɺ؂ࢹͷ֎෦ҕ೚Λ؇࿨Ͱ͖Δ ୯७ʹ͸ɺεϚϗΞϓϦ͸ϥΠτχϯάωοτϫʔΫʹࢀՃͰ͖·ͤΜ εϚϗͷి஑͕੾ΕΔɺΠϯλʔωοτʹ઀ଓͰ͖ͳ͘ͳΔͳͲͯ͠ɺτϥϯβΫγϣϯͷ؂ࢹ͕ Ͱ͖ͳ͘ͳΔͨΊɻ ૹ͚ۚͩͰ͋Ε͹Ͱ͖·͕͢ɺϥΠτχϯάωοτϫʔΫͷҰ෦ͱͯ͠ૹۚܦ࿏ʹߩݙ͢Δʹ͸ૹ ۚͱडۚͷ྆ํ͕ඞཁ τϥϯβΫγϣϯ؂ࢹ͕ෆཁͱ͍͏Θ͚Ͱ͸ͳ͍Ͱ͢

    εϚϗ্ͷτϥϯβΫγϣϯσʔλ͕յΕͯ͠·ͬͨ౳ͳ͘ͳͬͯ͠·ͬͨͱ͖ͷͨΊʹɺόοΫΞοϓΛ औ͓ͬͯ͘͜ͱ͕Ͱ͖Δ όοΫΞοϓอଘͷ෼ࢄҕ೚Λड͚ΔଆʹͱͬͯͷΠϯηϯςΟϒ͕͢Ͱʹ࣮૷ͯ͋͠Δ ͜ΕΒΛߦ͏ͷ͕ɺOlympusαʔόͰ͢ɻ εϚϗΞϓϦϋϯζΦϯΛ΍͍ͬͯΔͷͰɺͦ͜Ͱਐల۩߹͸ެ։͍͖ͯ͠·͢ɻ
  40. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̏ eltoo: ߋ৽ํ๏ͷ͞ΒͳΔγϯϓϧԽ

  41. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̐ Splicing (Splice-in, Splice-out) νϟωϧσϙδοτͷಈతมߋ Splice-in: σϙδοτΛ૿΍͢ Splice-out: σϙδοτΛݮΒ͢

    Funding TX Commitment TX ௨ৗ Funding TX Commitment TX2 Splicing Funding TX2
  42. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̐ Data Loss Protection νϟωϧঢ়ଶͷอଘ ҉߸௨՟ʹ͸෮ݩϑϨʔζ(mnemonic code)͕͋Γɺ΢ΥϨοτ͕յΕ ͯ͠·͏ɾεϚϗ͕յΕͯ͠·͏ͱ͍ͬͨ࣌ʹ΋෮ݩϑϨʔζΛ࢖͑͹ ΢ΥϨοτΛݩʹ໭ͤΔ

    ͔͠͠ɺΦϑνΣʔϯٕज़Ͱ͋ΔϥΠτχϯάͰ͸औҾσʔλ͸ϒϩο ΫνΣʔϯʹ͸ͳ͍ͨΊ෮ݩϑϨʔζͰνϟωϧঢ়ଶͷ෮ݩ͸Ͱ͖ͳ͍ ͜ͷͨΊɺ΢ΥϨοτͷ෮ݩϑϨʔζͰνϟωϧঢ়ଶ΋෮ݩͰ͖ΔΑ͏ ͳ࢓૊Έ͕ඞཁ
  43. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̑ Olympus Server νϟωϧঢ়ଶόοΫΞοϓͷ෼ࢄҕ೚ͱҕ೚ΠϯηϯςΟϒઃܭ http://lightning-wallet.com/what-does-olympus-server-do#what-does-olympus-server-do b+l walletͱ࿈ܞͯ͠Քಇ͢Δ࢓૊Έ νϟωϧΛ։͘ͱOlympus Serverʹνϟωϧঢ়ଶΛ҉߸Խͨ͠ঢ়ଶͰૹ෇͠ɺb+l

    wallet͸ϥΠτχϯάܦ༝Ͱ όοΫΞοϓख਺ྉΛ෷͏ Olympus Server͕ཪ੾ΔՄೳੑ(νϟωϧঢ়ଶΛ໭ͯ͘͠Εͳ͍)͕͋ΔͨΊɺෳ਺ͷOlympus Serverʹνϟωϧঢ় ଶΛૹΔ෼ࢄҕୗͷํ͕ྑ͍Α͏ʹࢥ͏
  44. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̒ Outsourcing WatchTower τϥϯβΫγϣϯ؂ࢹͷ֎෦Խ/ҕୗ νϟωϧΛҡ࣋͢Δʹ͋ͨͬͯɺνϟωϧ૬ख͕ෆਖ਼Λ͠ͳ͍Α͏ʹνϟωϧ͕উखʹด͡ΒΕͳ ͍͔Λ؂ࢹ͠ͳ͍ͱ͍͚ͳ͍ εϚϗ্ͷϥΠτχϯάΞϓϦͷ৔߹ɺεϚϗ͕յΕΔ·ͨ͸ి஑͕੾ΕΔͱ͍ͬͨ৔߹ʹ͜ͷ τϥϯβΫγϣϯ؂ࢹ͕Ͱ͖ͳ͘ͳΔͨΊɺ؂ࢹͷ֎෦Խ/ҕୗ͕ඞཁʹͳΔ ಛʹɺडۚͷࡍʹ͜ͷτϥϯβΫγϣϯ؂ࢹ͕ॏཁɻݱࡏ΄ͱΜͲͷϥΠτχϯάΞϓϦͰૹۚͷ

    Έ͔͠Ͱ͖ͳ͍ͷ͸ɺૹۚʹτϥϯβΫγϣϯ؂ࢹ͕ෆཁͳͨΊɻ b+l walletͰ͸ݱࡏτϥϯβΫγϣϯ؂ࢹ͕ͳ͍ʹ΋ؔΘΒͣड͕ۚͰ͖Δ(·ͩςετωοτ)ɻෆ ਖ਼ଆʹର͢Δࢿۚ࢖༻੍࣌ؒݶΛࡾϲ݄ͱ͔ʹͯ͠ɺ௕͍ͱ͍͑Ͳ΋εϚϗ͕Ұϲ݄΋Πϯλʔ ωοτ͔Β੾Γ཭͞ΕΔ͜ͱ͸ͳ͍ΑͶʁͱ͍͏͍͏͜ͱΛར༻͠ɺͦΕͳΓʹ҆શʹड͕ۚͰ͖ ΔΑ͏ʹ͍ͯ͠Δɻ
  45. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̓ Atomic Swaps ϥΠτχϯάΛ࢖ͬͨϒϩοΫνΣʔϯؒෆՄ෼ίΠϯަ׵

  46. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̓ Atomic Swaps ϥΠτχϯάΛ࢖ͬͨϒϩοΫνΣʔϯؒίΠϯަ׵ ϊʔυA ϊʔυB ϊʔυA BTCνϟωϧ ETHνϟωϧ

    ϊʔυB͸ɺBTCͱETH྆ํΛ ࣋ͨͳ͍ͱ͍͚ͳ͍
  47. ஫໨͍ͯ͠Δ ϥΠτχϯάٕज़̔ Streaming Payments ϥΠτχϯάૹۚͷ͞ΒͳΔޮ཰ԽɺૹۚϧʔτҰճҰճดͣ͡ʹ ϧʔτΛ࢖͍ճ͢ ͜͜Λ஗Ԇͤ͞Δ͜ͱͰ ϓϨΠϝʔδϋογϡΛ࢖͍·Θ͠ TX with

    HͷૹֹۚΛ Կ౓΋ॻ͖׵͑Δ
  48. Layer Blockchain Lightning Payment Channel Routing Algorithm Atomic Multi-Path Payments

    Lapps Physical Layer Link Layer Network Layer Transport Layer Application Layer Sphinx Presentation Layer Lightning Internet HTLC Session Layer
  49. ϥΠτχϯάʹڵຯ͕͋Δํ͸͝ࢀՃ͍ͩ͘͞ɻ

  50. ϏοτίΠϯɾϒϩοΫνΣʔϯεΫʔϧ΍ͬͯ·͢ ͝ڵຯ͋Δํ͸ࢀՃ͍͚ͨͩΕ͹ͱࢥ͍·͢ɻ

  51. fin.