Slide 1

Slide 1 text

$3:1 (&&, Lightning Network 16/6/2018 Blockchainษڧձ #4 @r_etx

Slide 2

Slide 2 text

$3:1 (&&, ߴ଎ૹۚͰ͖ͳ͍໰୊ ϚΠΫϩϖΠϝϯτͰ͖ͳ͍໰୊ εέʔϥϏϦςΟʔͳ͍໰୊

Slide 3

Slide 3 text

$3:1 (&&, ͦ΋ͦ΋ͳͥɺख਺ྉ΍TPS্͕͕Βͳ͍ͷ͔? ϒϩοΫνΣʔϯʹτϥϯβΫγϣϯΛॻ͖ࠐΉ͔Βɻ ඞཁͳ෦෼͚ͩΛΛBlockchainʹॻ͖ࠐΜͰ ్தͷऔҾΛΦϑνΣʔϯͰ΍Ε͹͍͍!

Slide 4

Slide 4 text

$3:1 (&&, Unconfirmed Transaction ඞཁͳ෦෼͚ͩΛΛBlockchainʹॻ͖ࠐΜͰ ్தͷऔҾΛΦϑνΣʔϯͰ΍Ε͹͍͍!

Slide 5

Slide 5 text

$3:1 (&&, Unconfirmed Transaction ඞཁͳ෦෼͚ͩΛΛBlockchainʹॻ͖ࠐΜͰ ్தͷऔҾΛΦϑνΣʔϯͰ΍Ε͹͍͍!

Slide 6

Slide 6 text

$3:1 (&&, ΦϑνΣʔϯ(Blockʹॻ͖ࠐ·ͳ͍)ͰऔҾΛߦ͍ɺࡾͭͷ՝୊Λղܾ͠Α͏ɻ Lightning network

Slide 7

Slide 7 text

$3:1 (&&, Unconfirmed Transaction தؒऔҾ͸ɺτϥϯβΫγϣϯΛൃߦ͢Δ͕ɺ LNʹࢀՃ͢Δuserͷlocalʹଘࡏ͠ɺϒϩʔυΩϟετ͞Εͳ͍ ΦϑνΣʔϯͰͷτϥϯβΫγϣϯɻ ͔͠͠ɺ͍ͭͰ΋ϒϩʔυΩϟετͰ͖Δɻ

Slide 8

Slide 8 text

$3:1 (&&, Prerequisite knowledge Prerequisite knowledge

Slide 9

Slide 9 text

$3:1 (&&, Multisig AliceͱBob͕ೋਓͱ΋signΛ͢Δ͜ͱʹΑͬͯ τϥϯβΫγϣϯ͕࣮ߦͰ͖Δɻ

Slide 10

Slide 10 text

$3:1 (&&, Time lock Ұఆͷ࣌ؒޙʹར༻ՄೳʹͳΔɻ

Slide 11

Slide 11 text

$3:1 (&&, Time lock Time lockʹ΋ೋछྨ͋Δɻ CLTV(Check Lock Time Verify)ɾɾɾઈରతͳ࣌ؒ΍ϒϩοΫߴʹΑ੍ͬͯݶ͢Δɻ date = 2018/7/21 or height =55555 CSV(Check Sequence Verify)ɾɾɾ૬ରతͳ࣌ؒ΍ϒϩοΫߴʹΑ੍ͬͯݶ͢Δɻ now > start_time + 2week

Slide 12

Slide 12 text

$3:1 (&&, ೋऀؒͰͷpayment

Slide 13

Slide 13 text

$3:1 (&&, LNͰ͸ɺ͸͡ΊʹऔҾΛߦ͏ਓಉ͕࢜ payment channelΛ։͘ඞཁ͕͋Δɻ

Slide 14

Slide 14 text

$3:1 (&&, AliceͱBob͸ɺ2-of-2ͷmultisig addressʹΦϯνΣʔϯͰૹۚ͢Δɻ ͜ΕͰνϟϯωϧΛ։ઃ͢Δɻ Opening Transaction

Slide 15

Slide 15 text

$3:1 (&&, Alice͔ΒBobʹ1BTCΛૹۚ͢Δ ૒ํ͕ɺTxΛൃߦ͢Δ͜ͱͰ ૒ํ͕͍ͭͰ΋ϒϩʔυΩϟετͰ͖Δ ঢ়ଶʹͳΔ ͷͰ͜ΕΛૹۚ׬ྃͱΈͳ͢ɻ

Slide 16

Slide 16 text

$3:1 (&&, ٯʹBob͔ΒAliceʹ1BTCΛૹۚ͢Δ ૒ํ͕ɺTxΛൃߦ͢Δ͜ͱͰ ૒ํ͕͍ͭͰ΋ϒϩʔυΩϟετͰ͖Δ ঢ়ଶʹͳΔ ͷͰ͜ΕΛૹۚ׬ྃͱΈͳ͢ɻ

Slide 17

Slide 17 text

$3:1 (&&, Bob͸ɺҰͭલͷTxΛ͍࣋ͬͯͯ͜ΕΛϒϩʔυΩϟετͰ͖Δɻ double spendͷՄೳੑ

Slide 18

Slide 18 text

$3:1 (&&, Alice͔ΒBobʹ1BTCΛૹۚ͢Δ ૒ํ͕ɺTxΛൃߦ͢Δ͜ͱͰ ૒ํ͕͍ͭͰ΋ϒϩʔυΩϟετͰ͖Δ ঢ়ଶʹͳΔ ͷͰ͜ΕΛૹۚ׬ྃͱΈͳ͢ɻ

Slide 19

Slide 19 text

$3:1 (&&, Bob͸ɺҰͭલͷTxΛ͍࣋ͬͯͯ͜ΕΛϒϩʔυΩϟετͰ͖Δɻ double spendͷՄೳੑ ϩοΫʹ༻͍ͨൿີ伴Λ͋Β͔͡Ίަ׵͓ͯ͘͠

Slide 20

Slide 20 text

$3:1 (&&, ੺͍伴͕BobͷkeyͰɺࠓAlice΋஌͍ͬͯΔɻ

Slide 21

Slide 21 text

$3:1 (&&, Bob͸ɺ͜ͷTxΛϒϩʔυΩϟετ͢Δͱɺ Ұఆ࣌ؒ଴ͨͳ͍ͱ࢖༻Ͱ͖ͳ͍ɻ ͦͷؒʹɺ伴Λ͍࣋ͬͯΔAlice͕࢒Γͷ͓ۚΛ຅ऩͰ͖Δɻ

Slide 22

Slide 22 text

$3:1 (&&, ௚઀channelΛ։͍͍ͯͳ͍ਓͱͷ΍ΓͱΓ

Slide 23

Slide 23 text

$3:1 (&&, ؒ઀తʹ͢Ͱʹ։͔Ε͍ͯΔchannelΛ༻͍ͯऔҾΛߦ͏

Slide 24

Slide 24 text

$3:1 (&&, HTLC(Hash Time-Locked Contracts) CLTVͷϩοΫղআͷͨΊʹɺॺ໊ͱ͸ผʹ഑෍͞ΕΔ ϋογϡ஋ͷݩͱͳΔvalueΛඞཁͱ͢ΔλΠϜϩοΫ (ૹ৴ऀ͸ɺҰఆظؒܦͨͳ͍ͱऔΓग़ͤͳ͍) ߹ݴ༿Λݴ͏ͱ։͘ശ(தʹ͸BTC͕٧·͍ͬͯΔ) ͻΒ͚ΰϚ! IBTI 2BTC

Slide 25

Slide 25 text

$3:1 (&&, ΩϟαϦϯ Ϙϒ ΞϦε ΩϟαϦϯʹ ૹ͍ۚͨ͠!

Slide 26

Slide 26 text

$3:1 (&&, ΩϟαϦϯ Ϙϒ ΞϦε ΩϟαϦϯʹ ૹ͍ۚͨ͠! ܅ͱ͸ϖΠϝϯτνϟϯωϧ ܨ͕ͬͯͳ͍͔Βࠓ͔Βग़͓͢୊ͷ ౴͑Λ஌͍ͬͯΔਓʹૹۚͯ͠!

Slide 27

Slide 27 text

$3:1 (&&, ΩϟαϦϯ Ϙϒ ΞϦε ΩϟαϦϯʹ ૹ͍ۚͨ͠! ܅ͱ͸ϖΠϝϯτνϟϯωϧ ܨ͕ͬͯͳ͍͔Βࠓ͔Βग़͓͢୊ͷ ౴͑Λ஌͍ͬͯΔਓʹૹ͓ۚͯ͘͠Ε ͓୊ (hash஋)

Slide 28

Slide 28 text

$3:1 (&&, ΩϟαϦϯ Ϙϒ ΞϦε ͓୊ͷ౴͑Λ ஌͍ͬͯΔਓʹ ͸ૹۚ͢Δͥ!! ͓୊ (hash஋) IBTI 2BTC

Slide 29

Slide 29 text

$3:1 (&&, ΩϟαϦϯ Ϙϒ ΞϦε ͓୊ͷ౴͑Λ ஌͍ͬͯΔਓʹ ͸ૹۚ͢Δͥ!! ͓୊ (hash஋) Θ͠͸౴͑஌Β͵ IBTI 2BTC

Slide 30

Slide 30 text

$3:1 (&&, ΩϟαϦϯ Ϙϒ ΞϦε ͓୊ͷ౴͑Λ ஌͍ͬͯΔਓʹ ͸ૹۚ͢Δͥ!! ͓୊ (hash஋) IBTI ڭ͑ͯ΍Ζ͏ɻ ͦͷ୅ΘΓɺΞϦε͕ ૹۚͨ͠෼Λઌʹ Ϙϒ͞Μ͕ग़͓ͯ͘͠Ε? 2BTC

Slide 31

Slide 31 text

$3:1 (&&, ΩϟαϦϯ Ϙϒ ΞϦε ͓୊ͷ౴͑Λ ஌͍ͬͯΔਓʹ ͸ૹۚ͢Δͥ!! ͓୊ (hash஋) IBTI 2BTC Θ͔Γਃͨ͠ IBTI 2BTC

Slide 32

Slide 32 text

$3:1 (&&, ΩϟαϦϯ Ϙϒ ΞϦε ͓୊ͷ౴͑Λ ஌͍ͬͯΔਓʹ ͸ૹۚ͢Δͥ!! ͓୊ (hash஋) IBTI 2BTC ͜Ε͕͓୊ͷ౴͑͡Ό! Θͨ͠͠͸౴͑Λ ஌͍ͬͯΔ͔Β ͜ͷശ͕։͚ΕΔὑ IBTI 2BTC ౴͑

Slide 33

Slide 33 text

$3:1 (&&, ΩϟαϦϯ Ϙϒ ΞϦε ૹۚͰ͖ͨͥ! ͓୊ (hash஋) IBTI 2BTC ੿ऀ΋౴͑Λ ஌͍ͬͯΔ͔Βɺ ͜ͷശ͕։͚ΕΔ IBTI 2BTC ౴͑ ౴͑

Slide 34

Slide 34 text

$3:1 (&&,

Slide 35

Slide 35 text

$3:1 (&&, ໰୊఺ ௚઀ϖΠϝϯτνϟϯωϧΛ։͍͍ͯΔਓಉ࢜ͷऔҾͰ ෆਖ਼͕ߦΘΕͨͱ͖ʹɺλΠϜϩοΫ͕ղআ͞ΕΔ·Ͱʹ ࢿۚΛऔΓग़͢ඞཁ͕͋Δɻ (৸͍ͯΔͱ͖ʹؾ͔ͮͳ͍ɺి೾ো֐ͳͲʹରԠͰ͖ͳ͍) ΢Υονλϫʔ

Slide 36

Slide 36 text

$3:1 (&&, ໰୊఺ ϖΠϝϯτνϟϯωϧΛ։͍ͯด͡Δ·Ͱʹ࠷௿ೋճͷ TxΛΦϯνΣʔϯͰૹΔͷͰɺ3ճҎ্TxΛૹΒͳ͍৔߹ɺ ٯʹTx͕ͭ·Δɻ(LNͷҙຯ͕ͳ͍) nݸͷϖΠϝϯτνϟϯωϧΛ։͍͍ͯΔͱ͖͸ɺ φΠʔϒʹ2n+1ճͷTxΛൃߦ͠ͳ͍ݶΓҙຯ͕ͳ͍ɻ

Slide 37

Slide 37 text

$3:1 (&&, ໰୊఺ ಛఆͷϢʔβʔ͕100ສਓͱͭͳ͕Δ ϥΠτχϯάωοτϫʔΫΛߏங͢Δʹ͸ɺ 10ݸͷϖΠϝϯτνϟϯωϧΛ։͖ɺͦΕͧΕͷ peer͕ಉ͘͡10ݸͷϖΠϝϯτνϟωϧΛ։͘ ͜ͱΛ6ճ܁Γฦͤ͹ྑ͍ #5$

Slide 38

Slide 38 text

$3:1 (&&, ໰୊఺ ಛఆͷϢʔβʔ͕100ສਓͱͭͳ͕Δ ϥΠτχϯάωοτϫʔΫΛߏங͢Δʹ͸ɺ 10ݸͷϖΠϝϯτνϟϯωϧΛ։͖ɺͦΕͧΕͷ peer͕ಉ͘͡10ݸͷϖΠϝϯτνϟωϧΛ։͘ ͜ͱΛ6ճ܁Γฦͤ͹ྑ͍ #5$ #5$ #5$ #5$ #5$ #5$ #5$ #5$ #5$ #5$

Slide 39

Slide 39 text

$3:1 (&&, ໰୊఺ ಛఆͷϢʔβʔ͕100ສਓͱͭͳ͕Δ ϥΠτχϯάωοτϫʔΫΛߏங͢Δʹ͸ɺ 10ݸͷϖΠϝϯτνϟϯωϧΛ։͖ɺͦΕͧΕͷ peer͕ಉ͘͡10ݸͷϖΠϝϯτνϟωϧΛ։͘ ͜ͱΛ6ճ܁Γฦͤ͹ྑ͍ 10ݸͷϖΠϝϯτνϟϯωϧΛ։͘ͱɺ ҰͭͷνϟϯωϧͰ͸ɺdepositͨ͠ࢿۚͷ 10%͔͠ϥΠτχϯάωοτϫʔΫͰ࢖͑ͳ͍

Slide 40

Slide 40 text

$3:1 (&&, ΩϟαϦϯ Ϙϒ ΞϦε ͓୊ͷ౴͑Λ ஌͍ͬͯΔਓʹ ͸ૹۚ͢Δͥ!! ͓୊ (hash஋) IBTI ڭ͑ͯ΍Ζ͏ɻ ͦͷ୅ΘΓɺΞϦε͕ ૹۚͨ͠෼Λઌʹ Ϙϒ͞Μ͕ग़͓ͯ͘͠Ε? 2BTC

Slide 41

Slide 41 text

$3:1 (&&, ΩϟαϦϯ Ϙϒ ΞϦε ͓୊ͷ౴͑Λ ஌͍ͬͯΔਓʹ ͸ૹۚ͢Δͥ!! ͓୊ (hash஋) IBTI 2BTC Θ͔Γਃͨ͠ IBTI 2BTC ΞϦε͔Β΋Β͏લʹ Ϙϒ͕ࢧ෷͏

Slide 42

Slide 42 text

$3:1 (&&, ໰୊఺ ෳ਺ਓΛ஥հ͢ΔLNͰ͸ɺ஥հ͢Δਓ͕ͨͪઌʹ ࢿۚΛఏڙ͢Δɻ·ͨɺωοτϫʔΫͷϒϥϯν͕௕͘ͳΔͱ ͜ͷି͠ग़͠ػձ͕૿͑Δɻ ି͠ग़͠ʹΑͬͯࣗ෼ͷdepositࢿ͕ۚఈΛ͖ͭɺ LN͕ػೳ͠ͳ͘ͳΔɻ

Slide 43

Slide 43 text

$3:1 (&&, IUUQTNFEJVNDPN!UJNFWBMVFPGCUDUIFUJNFWBMVFPG CJUDPJOCGE IUUQTCJUDPJONBHB[JOFDPNBSUJDMFTVOEFSTUBOEJOHUIFMJHIUOJOHOFUXPSL QBSUCVJMEJOHBCJEJSFDUJPOBMQBZNFOUDIBOOFM IUUQTCJUDPJONBHB[JOFDPNBSUJDMFTVOEFSTUBOEJOHUIFMJHIUOJOHOFUXPSL QBSUDSFBUJOHUIFOFUXPSL IUUQT[PPNCMDDPNMJHIUOJOHOFUXPSL IUUQTNFEJVNDPN!KPOBMEGZPPLCBMMNBUIFNBUJDBMQSPPGUIBUUIF MJHIUOJOHOFUXPSLDBOOPUCFBEFDFOUSBMJ[FECJUDPJOTDBMJOH TPMVUJPOC Reference