ブロックチェーンを変えるIBC

Cosmos Japan Meetup #4
にて発表で使用したスライドです。
・IBCとは
・IBCで何ができるようになるのか
という話を中心にしています。

Transcript

1. ϒϩοΫνΣʔϯΛ ม͑ΔIBC HashHub,Cosmos Japan:FUJITA TAKUYA
2. ࣗݾ঺հ
3. ࣗݾ঺հ • FUJITA TAKUYA • @peaceandwhisky • HashHubͰࠓ೥ͷय़͔ΒΤϯδχΞ • ΠϯλʔΦϖϥϏϦςΟ ʹڵຯ͕͋Δ
5. ొஃͷಈػ
6. Twitter:@peaceandwhisky ϑΥϩʔͯ͠Ͷʂʂ
7. ΞδΣϯμ • IBCͱ͸ʁ • IBCͰͰ͖ΔΑ͏ʹͳΔ͜ͱ(ϓϩδΣΫτ঺հ) • IBC։ൃਐḿঢ়گ • ·ͱΊ&એ఻
8. (લఏ) IBC ͱ͸ʁ
9. IBCͱ͸ • Inter-Blockchain Communication ͷུ
11. IBCͱ͸ • Inter-Blockchain Communication ͷུ • ৴པͰ͖ηΩϡΞͳϞδϡʔϧؒ௨৴ϓϩτίϧ
 ܾఆ࿦తϓϩηεΛ࣋ͬͨϞδϡʔϧؒͰɺѻ͏ ͜ͱ͕Ͱ͖Δ΋ͷ
12. IBCͱ͸ • Inter-Blockchain Communication ͷུ • ৴པͰ͖ηΩϡΞͳϞδϡʔϧؒ௨৴ϓϩτίϧ
 ܾఆ࿦తϓϩηεΛ࣋ͬͨϞδϡʔϧؒͰɺѻ͏ ͜ͱ͕Ͱ͖Δ΋ͷ • TendermintΛ࢖༻͢Δ͜ͱ͕ϕʔε
13. IBCͬͯ ͳΜͷͨΊʹ࡞ͬͯΔͷʁ
14. Cosmos ͷ໨తͬͯ ͳΜ͚ͩͬʁ
16. Cosmosͷ໨త • Cosmos͸”Internet of Blockchain”Λ࡞Δ • Cosmos is …
 
 ϒϩοΫνΣʔϯಉ͕࢜૬ޓӡ༻Ͱ͖ͯɺ
 εέʔϧ͢ΔͨΊͷ
 ϒϩοΫνΣʔϯͷ”ΤίγεςϜ”

17. Cosmosͷ໨త • Cosmos͸”Internet of Blockchain”Λ࡞Δ • Cosmos is …
 
 ϒϩοΫνΣʔϯಉ͕࢜૬ޓӡ༻Ͱ͖ͯɺ
 εέʔϧ͢ΔͨΊͷ
 ϒϩοΫνΣʔϯͷ”ΤίγεςϜ”

18. Cosmosͷ։ൃஈ֊ • CosmosͷϝΠϯωοτ͕ࠓ೥3݄ʹϩʔϯν
 ͦͷޙTendermintͷ։ൃऀΒΛத৺ʹ
 IBCͷ։ൃ͕ਐΜͰ͍Δɻ • IBCͷ࣮૷Λ૝ఆͨ͠ϓϩδΣΫτୡͷग़ݱ
 Kava, Terra,Microtick…..(ޙʹग़ͯ͘Δ)

19. (ݱঢ়) ͦΕͧΕͷ ϒϩοΫνΣʔϯΛܨ͗ɺ ΠϯλʔΦϖϥϏϦςΟ ͷ࣮ݱͷͨΊʹ IBCΛ࣮૷͢Δͧ IBCͰͷΠϯλʔΦϖϥϏϦςΟ࣮૷ ʹઌճͬͯCosmosͰνΣʔϯ࡞Δͧ
20. IBCͱ͸ • Inter-Blockchain Communication ͷུ • ৴པͰ͖ηΩϡΞͳϞδϡʔϧؒ௨৴ϓϩτίϧ
 ܾఆ࿦తϓϩηεΛ࣋ͬͨϞδϡʔϧؒͰɺѻ͏ ͜ͱ͕Ͱ͖Δ΋ͷ • TendermintΛ࢖༻͢Δ͜ͱ͕ϕʔε
21. ૬ޓӡ༻ੑ ΠϯλʔΦϖϥϏϦςΟ! ΠϯλʔΦϖϥϏϦςΟ!! ΠϯλʔΦϖϥϏϦςΟ!!!
22. ͳΜ͔ ϒϩοΫνΣʔϯͱ ϒϩοΫνΣʔϯ͕ ͭͳ͕Δ...??
23. ͳΔ΄Ͳ…ʁʁ
24. ʁʁʁ
25. IBCͰͰ͖ΔΑ͏ʹͳΔ͜ͱ
26. IBCͰͰ͖ΔΑ͏ʹͳΔ͜ͱ • ICSͷϖʔύʔʹ
 Ϣʔεέʔεͱͯ͠هࡌ͞Ε͍ͯΔྫΛ঺հ
 https://github.com/cosmos/ics/blob/master/ spec.pdf • ਵ࣌ߋ৽͞Ε͍ͯΔ(ࠓ೔΋͞Εͨ)
27. IBCͰͰ͖ΔΑ͏ʹͳΔ͜ͱ • ΞηοτͷҠಈ • ϚϧννΣʔϯίϯτϥΫτ • γϟʔσΟϯά
 
 ͷओʹ3ͭ
 Լʹߦ͘΄Ͳߏ૝ஈ֊ͷ৭͕ڧ͍ɻ
28. IBCͰͰ͖ΔΑ͏ʹͳΔ͜ͱ • ΞηοτͷҠಈ • ϚϧννΣʔϯίϯτϥΫτ • γϟʔσΟϯά
 
 ͷओʹ3ͭ
 Լʹߦ͘΄Ͳߏ૝ஈ֊ͷ৭͕ڧ͍ɻ
29. ΞηοτͷҠಈ
30. (ཹҙ) ίΠϯͱτʔΫϯ τʔΫϯʹ౷Ұ
31. IBC:ΞηοτͷҠಈ • Funginable TokenͷνΣʔϯؒͷҠಈ
 ICS20ͱ͍͏ن֨ʹԊͬͨτʔΫϯ
 2way peg
 AνΣʔϯͷAτʔΫϯΛϩοΫΞοϓ͠
 BνΣʔϯ্ͰA’τʔΫϯͱͯ͠ൃߦ
32. IBC:ΞηοτͷҠಈ • NFT(Non Funginable Token)ͷνΣʔϯؒͷҠಈ
 ICS17ͱͯ͠ن͕֨ఏҊ͞Ε͍ͯΔ͕ɺະ࠾༻ɻ
 2way pegΛ࢖͏༧ఆɻ
 
 Cosmos SDK্ͰNFTൃߦ͢ΔϞδϡʔϧ͕͋ Δɻ
33. ICS20τʔΫϯ΍ NFTͷొ৔ʹΑͬͯ มΘΔ͜ͱ
34. ΞηοτͷҠಈ • ΞηοτͷҠಈͷͨΊʹͦΕͧΕͷ໾ׂΛ࣋ͬͨ νΣʔϯ͕ग़ݱ͢Δͱߟ͑ΒΕΔ
 - Vanila Payment νΣʔϯ
 - Shield Payment νΣʔϯ
 - DexνΣʔϯ
 - DeFiνΣʔϯ
35. ΞηοτͷҠಈ • Vanila Payment νΣʔϯ
 τʔΫϯͷҠಈΛߦ͏ͨΊʹ͸ɺ҆શ͔ͭ࠷୹ͷ ܦ࿏ΛબΜͰτʔΫϯͷҠಈΛߦ͍͍ͨ͸ͣɻ
 ࣌Ձ૯ֹ͕ߴ͘ɺIBCͰͷνΣʔϯͷܨ͕͗ूத ͢Δࢿ࢈Ҡಈ༻ͷνΣʔϯ
 Cosmos Hub͕ओʹ୲͏ͱߟ͑ΒΕΔ
36. ΞηοτͷҠಈ • Sheild Payment νΣʔϯ
 ΞηοτͷҠಈͷൿಗԽΛߦ͏ͨΊͷνΣʔϯ
 ͜ΕΛ௨Δ͜ͱʹΑͬͯɺΞηοτͷॴ༗ݖ͕ೖ ΕସΘ͍ͬͯͯ΋Θ͔Βͳ͍
 ଞͷ௨՟ʹ׵͑ͨΓ΋Ͱ͖ΔΑ͏ʹ

37. ΞηοτͷҠಈ • Decentralized ExchangeνΣʔϯ
 IBCΛ༻͍࣮ͨ૷͸·͕ͩͩɺνΣʔϯ্ͰDEXΛ࣮ ૷͢ΔͨΊͷDEXϞδϡʔϧ͕ొ৔ࡁΈ
 TendermintνʔϜ͕IBC࣮૷ޙʹIBCΛ༻͍ͨ
 DEXϞδϡʔϧΛ։ൃ༧ఆɻ
 https://medium.com/tendermint/an-update-on-the- plans-for-a-cosmos-dex-f69fd42dd1fc Binance DEXʹ͍ͭͯ
38. ΞηοτͷҠಈ • Decentralized FinanceνΣʔϯ
 εςʔϒϧίΠϯ:Kava,Terra,e-Money
 ΦϓγϣϯऔҾ&Ձ֨ΦϥΫϧ:Microtick
 

39. IBCͰͰ͖ΔΑ͏ʹͳΔ͜ͱ • ΞηοτͷҠಈ • ϚϧννΣʔϯίϯτϥΫτ • γϟʔσΟϯά
 
 ͷ3ͭ
 Լʹߦ͘΄Ͳߏ૝ஈ֊ͷ৭͕ڧ͍ɻ
40. ϚϧννΣʔϯ εϚʔτίϯτϥΫτ
41. ϚϧννΣʔϯίϯτϥΫτ • ”ผνΣʔϯͷεϚίϯͱ࿈ܞΛͱΔ͜ͱ͕Ͱ͖ ΔΑ͏ʹͳΔ”
 - Cross-chain contract calls
 - Cross-chain fee payment
 - Interchain collateralisation 
 

42. ϚϧννΣʔϯίϯτϥΫτ • Cross-chain contract calls
 ͋ΔνΣʔϯA͔ΒผͷνΣʔϯBͷεϚʔτίϯ τϥΫτ Λ࣮ߦͤ͞Δ͜ͱ͕Ͱ͖ΔΑ͏ʹͳΔɻ
 ྫ) 
 EtherumͷΞΧ΢ϯτ͔ΒEOSͷεϚίϯΛୟ͘
 EtherͷεϚίϯͷॲཧΛ్தͰEOSʹ೚ͤΔ
43. ϚϧννΣʔϯίϯτϥΫτ • Cross-chain fee payment
 τϥϯβΫγϣϯ࣮ߦͷख਺ྉΛɺͦͷνΣʔϯ ͷτʔΫϯͰ͸ͳ͘ผνΣʔϯͷτʔΫϯͰࢧ෷ ͏͜ͱ͕Ͱ͖ΔΑ͏ʹͳΔɻ
 EthereumͷίϯτϥΫτ΢ΥϨοτ͕࣋ͭػೳ ΛCosmos্Ͱ࣮૷͢Δɻ
44. ϚϧννΣʔϯίϯτϥΫτ • Interchain collateralisation
 ICSͷن֨ͱͯ͠ఏҊ͞Ε͍ͯΔ͕ɺະ࠾༻
 AνΣʔϯͷόϦσʔλ͕BνΣʔϯͷϒϩοΫΛ ݕূͯ͠ɺόϦσʔλͱͯ͠ࢀՃ͢Δ͜ͱ͕Ͱ ͖ɺෆਖ਼ͳݕূΛͨ͠৔߹͸slash͞ΕΔɻ
 ୲อʹ͢Δͷ͸AνΣʔϯͷAτʔΫϯ
45. ϚϧννΣʔϯίϯτϥΫτ • ”ผνΣʔϯͷεϚίϯͱ࿈ܞΛͱΔ͜ͱ͕Ͱ͖ ΔΑ͏ʹͳΔ”
 - Cross-chain contract calls
 - Cross-chain fee payment
 - Interchain collateralisation 
 

46. IBCͰͰ͖ΔΑ͏ʹͳΔ͜ͱ • ΞηοτͷҠಈ • ϚϧννΣʔϯίϯτϥΫτ • γϟʔσΟϯά
 
 ͷ3ͭ
 Լʹߦ͘΄Ͳߏ૝ஈ֊ͷ৭͕ڧ͍ɻ
47. γϟʔσΟϯά
48. γϟʔσΟϯά • ίϯηϯαε෦෼ͷόϦσʔτͷܭࢉΛ෼ׂ͢ ΔγϟʔσΟϯάͰ͸ͳ͍ɻ
 σʔλ༰ྔ΍ίϯτϥΫτͷܭࢉॲཧΛ෼ׂ͢ ΔγϟʔσΟϯά
 - Code migration
 - Data migration
49. γϟʔσΟϯά • Code migration
 εϚίϯͷ࿈ܞ͕औΕΔ͜ͱʹΑͬͯɺҰͭͷ ॲཧʹඞཁͳεϚίϯͷίʔυΛಉ͡νΣʔϯ ্ʹࡌͤΔඞཁ͕ͳ͘ͳΔɻ
 ίʔυͷσʔλͱεϚίϯͷ࣮ߦॲཧΛνΣʔ ϯ͝ͱʹ෼ࢄ͢Δ͜ͱ͕Ͱ͖Δɻ
50. γϟʔσΟϯά • Data migration
 IBCΛ༻͍Δ͜ͱʹΑͬͯɺΞϓϦέʔγϣϯ෦ ෼΍εϚίϯ͔ΒɺଞͷνΣʔϯʹ͋Δετ ϨʔδΛݺΜͰࢀর͢Δ͜ͱ΋ՄೳʹͳΔɻ
 ΋ͪΖΜɺࢀরͷίετͱτϨʔυΦϑ

51. γϟʔσΟϯάͷ࣮ݱ ʹΑͬͯߟ͑ΒΕΔ͜ͱ
52. γϟʔσΟϯά • ػೳʹ෼͚ͯ࠷దͳνΣʔϯ͕ੜ·ΕΔ
 - ܭࢉॲཧΛߦ͏ͨΊͷνΣʔϯ
 - σʔλͷετϨʔδͷ໾ׂΛ࣋ͭνΣʔϯ • νΣʔϯʹ֊૚ߏ଄͕ੜ·ΕΔ
53. IBCͰͰ͖ΔΑ͏ʹͳΔ͜ͱ • ΞηοτͷҠಈ • ϚϧννΣʔϯίϯτϥΫτ • γϟʔσΟϯά
 
 ͷओʹ3ͭ
 Լʹߦ͘΄Ͳߏ૝ஈ֊ͷ৭͕ڧ͍ɻ
54. IBCͷਐḿ͸ʁ
55. IBCͷਐḿ • MainNetͷϩʔϯνޙɺ4݄͔Βຊ֨తʹ։ൃʹ औΓ૊ΜͰ͍Δɻ • DevconVظؒதʹ(10݄൒͹)
 ࠷ॳͷσϞΛެ։
 νΣʔϯؒͰͷτʔΫϯͷૹ͕ۚͰ͖ΔΑ͏ʹ
56. Game of Zone!!
58. Game of Zone • IBCͷ࣮૷ΛͰ͖ΔਓΛ૿΍ͨ͢ΊͷΠϕϯτ • IBC ϞδϡʔϧΛ࣮૷Ͱ͖ͨਓʹ10ສATOM(໿ 4800ສԁ)Λࢁ෼͚ • HashHub΋ࢀՃ͍ͨ͠!!!!

59. ·ͱΊ
60. དྷिɺCosmos SDKϋϯζΦϯ • Game of ZoneͰ৆ۚΛউͪऔΔͨΊʹ
 ·ͣɺCosmos SDKΛҰॹʹֶͼ·͠ΐ͏ʂ
61. Ͳ͏͍͏ϓϩδΣΫτ͕͋Δͷ ͔஌Γ͍ͨਓ༻ • https://cosmonauts.world/