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BBc-1 : Beyond Blockchain One σβΠϯϖʔύʔ ( ઃܭจॻ ) Ұൠࣾஂ๏ਓϏϤϯυϒϩοΫνΣʔϯ [email protected] ͜ͷεϥΠυϑΝΠϧ͸ https://speakerdeck.com/beyondblockchain ʹ͋Γ·͢ ݪจ͸ https://github.com/beyond-blockchain/bbc1/blob/develop/docs/BBc-1 design paper.pdf Λࢀর͍ͯͩ͘͠͞ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.1/18

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͸͡Ίʹ ϒϩοΫνΣʔϯͷ՝୊ BBc-1 ͱ͸ʁ ΞʔΩςΫνϟ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.2/18

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ϒϩοΫνΣʔϯͷ՝୊ ύϒϦοΫͳϨοδϟʔͷ՝୊ ֎ҼʹΑΓఀࢭͨ͠Γ҆શੑ͕ଛͳΘΕΔՄೳੑ͕͋Δ ֎Ҽ : ҉߸ٕज़ͷةຆԽ΍ωΠςΟϒԾ૝௨՟ͷࢢ৔Ձ֨ͷ๫མ ࣮࣌ؒੑɾൿಗੑͷ՝୊ ϫϯωεʹΑΔࠔ೉ (εέʔϥϏϦςΟͷܽ೗ɺ৽ٕज़Λ࣮஍Ͱࢼͤͳ͍) ϓϥΠϕʔτͳϨοδϟʔͷ՝୊ ূ໌ػೳ͕֎෦ʹఏڙ͞Εͳ͍৔߹ɺ ֎͔ΒݟͯطଘͷσʔλϕʔεͱมΘΒͳ͍ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.3/18

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BBc-1 ͱ͸ʁ BBc-1 Ͱ͸ɺ ه࿥͕Ͱ͖·͢ ه࿥ͷଘࡏΛূ໌Ͱ͖·͢ ݖݶΛ΋ͭຊਓͰ͋Δ͜ͱΛσδλϧॺ໊Ͱূ໌Մೳͳ৔߹ʹݶΓɺ ͦͷه࿥Λߋ৽͢Δɺͱ͍ͬͨ͜ͱ͕Ͱ͖·͢ (ΞϓϦέʔγϣϯϨϕϧͰ) ʮBBc τϥετʯΛ࣮૷͠·͢ https://speakerdeck.com/beyondblockchain/bbc-trust طଘͷϒϩοΫνΣʔϯ/෼ࢄ୆ாͱͲ͏ҧ͏ʁ ಛ௃ (1) ୆ாʹ͓͚Δ৘ใಉ࢜ͷؔ܎ੑͷهड़ྗ͕ߴ͍ (2) γεςϜ্ͷʮ߹ҙʯΛݱ࣮ࣾձͷͦΕͱҰகͤ͞Δ͜ͱ͕Ͱ͖Δ (3) վ͟Μݕ஌ͷػձ͕޲্͍ͯ͠Δ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.4/18

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ΞʔΩςΫνϟ #JUDPJO ##D$PSF ϨοδϟʔαϒγεςϜ ΞϓϦέʔγϣϯ ͦ ͷ ଞ ͞ · ͟ · ͳ Ξ ϓ Ϧ ͷ Մ ೳ ੑ ڞ௨ϥΠϒϥϦ ##D ։ൃ߲໨ ஍ Ҭ ௨ ՟ Ξ ϓ Ϧ ϙ Π ϯ τ Ξ ϓ Ϧ དྷ ྺ ূ ໌ Ξ ϓ Ϧ ʜ ॳظʹ͓͍ͯଘࡏূ໌Λґଘ ΞϯΧϦϯά ֤ϊʔυʹ͓͚Δه࿥ʹ͸ ֤छσʔλϕʔεΛར༻Մೳ TRMJUF.Z42-ͦͷଞ%# BBc-1 σδλϧ௨՟ϥΠϒϥϦ ͦͷଞͷϥΠϒϥϦ ॳظʹ͸ Bitcoin ΍ Ethereum ͱ͍ͬͨطଘͷϒϩοΫνΣʔϯʹΞϯΧϦϯά (ূڌͷຒΊࠐΈ) Λ͢Δ͜ͱʹΑΓɺ τϥϯβΫγϣϯͷূ໌ػೳΛୡ੒͠·͢ த௕ظతʹ͸ʮཤྺަࠩʯͷߟ͑ํΛԠ༻ͨ͠ಠࣗํࣜʮίϯςΩετূ໌ (Proof of Context)ʯʹΑΓୡ੒͠·͢ (ػೳ͸ॳظ͔Βఏڙͭͭ͠ݚڀ։ൃ͍͖ͯ͠·͢) BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.5/18

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ϒϩοΫνΣʔϯΛཧղ͢Δ ػೳͷ֊૚ߏ଄ ʮҨݴॻςετʯ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.6/18

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ϒϩοΫνΣʔϯ/୆ாٕज़ͷػೳΛ෼ղ͢Δ ਖ਼౰ੑͷอূ ྫ6590ߏ଄ͱσδλϧॺ໊ ଘࡏੑͷূ໌ ྫ࡞ۀূ໌෇͖ϋογϡνΣʔϯ །Ұੑͷ߹ҙ ྫφΧϞτɾίϯηϯαε ϧʔϧͷهड़ ྫ#5$ͷҠస ɾ τϥϯβΫγϣϯͷ಺༰͕վ͟ΜͰ͖ͣɺ ɾ ͦͷΞηοτʹؔ͢ΔաڈͷτϥϯβΫγϣϯྻʹরΒͯ͠ໃ६͕ͳ͘ɺ ɾ ͔ͭɺਖ਼౰ͳϢʔβʹΑΓ౤ೖ͞Ε͍ͯΔ͜ͱΛอূ͢Δ ɾաڈʹ͋ͬͨτϥϯβΫγϣϯͷূڌΛຣফͰ͖ͣɺ ɾ ͔ͭɺաڈʹͳ͔ͬͨτϥϯβΫγϣϯͷূڌΛ፻଄Ͱ͖ͳ͍ ɾໃ६͢Δ;ͨͭͷτϥϯβΫγϣϯ͕౤ೖ͞Εͨ৔߹ɺ ɹ ͍ͣΕ ؔ༩͢Δશһ͕ಉ͡ยํΛબΜͰྺ࢙ͷதʹҐஔ͚ͮΔ ɾΞϓϦέʔγϣϯϩδοΫ Կ͕ਖ਼͍͠τϥϯβΫγϣϯ͔ΛܾΊΔ ྫ͑͹ΞηοτΛʮ࠴ݖʯ ɺτϥϯβΫγϣϯΛʮͦͷചങʯͱஔ͖׵͑ͯಡΜͰΈ͍ͯͩ͘͞ ϏοτίΠϯ͸ ࠴ݖͰ͸ͳ͍Ξηοτ ͳͷͰɺ࣮͸ಛघࣄྫͩͱ͍͏͜ͱ͕෼͔Γ·͢ ػೳ͕Լ͔ΒੵΈ্͕͍ͬͯ·͢ (ྫ͸ϏοτίΠϯͰ͕͢ɺ֤૚Λ෼཭ͯ͠ผʑͷٕज़Ͱ࣮ݱՄೳ) ৽حੑ͸Ͳ͜ʹ͋Δʁ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.7/18

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ϒϩοΫνΣʔϯ/୆ாٕज़ͷػೳΛ෼ղ͢Δ ਖ਼౰ੑͷอূ ྫ6590ߏ଄ͱσδλϧॺ໊ ଘࡏੑͷূ໌ ྫ࡞ۀূ໌෇͖ϋογϡνΣʔϯ །Ұੑͷ߹ҙ ྫφΧϞτɾίϯηϯαε ϧʔϧͷهड़ ྫ#5$ͷҠస ɾ τϥϯβΫγϣϯͷ಺༰͕վ͟ΜͰ͖ͣɺ ɾ ͦͷΞηοτʹؔ͢ΔաڈͷτϥϯβΫγϣϯྻʹরΒͯ͠ໃ६͕ͳ͘ɺ ɾ ͔ͭɺਖ਼౰ͳϢʔβʹΑΓ౤ೖ͞Ε͍ͯΔ͜ͱΛอূ͢Δ ɾաڈʹ͋ͬͨτϥϯβΫγϣϯͷূڌΛຣফͰ͖ͣɺ ɾ ͔ͭɺաڈʹͳ͔ͬͨτϥϯβΫγϣϯͷূڌΛ፻଄Ͱ͖ͳ͍ ɾໃ६͢Δ;ͨͭͷτϥϯβΫγϣϯ͕౤ೖ͞Εͨ৔߹ɺ ɹ ͍ͣΕ ؔ༩͢Δશһ͕ಉ͡ยํΛબΜͰྺ࢙ͷதʹҐஔ͚ͮΔ ɾΞϓϦέʔγϣϯϩδοΫ Կ͕ਖ਼͍͠τϥϯβΫγϣϯ͔ΛܾΊΔ σδλϧॺ໊ͰͰ͖Δʂ τϥετʹཔΔඞཁ͕͋ͬͨʂ ઃܭʹΑͬͯ͸ෆཁʹͰ͖Δʂ ΞϓϦέʔγϣϯ૚ʂ ྫ͑͹ΞηοτΛʮ࠴ݖʯ ɺτϥϯβΫγϣϯΛʮͦͷചങʯͱஔ͖׵͑ͯಡΜͰΈ͍ͯͩ͘͞ ϏοτίΠϯ͸ ࠴ݖͰ͸ͳ͍Ξηοτ ͳͷͰɺ࣮͸ಛघࣄྫͩͱ͍͏͜ͱ͕෼͔Γ·͢ ػೳ͕Լ͔ΒੵΈ্͕͍ͬͯ·͢ (ྫ͸ϏοτίΠϯͰ͕͢ɺ֤૚Λ෼཭ͯ͠ผʑͷٕज़Ͱ࣮ݱՄೳ) ৽حੑ͸Ͳ͜ʹ͋Δʁ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.7/18

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ϒϩοΫνΣʔϯͷਅՁ͸ʁ աڈʹҐஔ͚ͮΒΕͨσδλϧॺ໊ΛɺԿͷݖҖʹ΋ґΒͣʹਖ਼͍͠·ͨ͸ ਖ਼͘͠ͳ͍ͱূ໌Ͱ͖ΔΑ͏ʹ͢Δ → աڈʹॺ໊͞Εͨσʔλͷ ଘࡏੑͷূ໌ ྫ୊ 1 : σδλϧԽ͞ΕͨҨݴॻͷॺ໊͕ຊਓͷ΋ͷͰ͋Γɺ಺༰͕վ͟Μ ͞Ε͍ͯͳ͍͜ͱΛূ໌ͤΑɹͨͩ͠ɺ Ұൠʹຊਓͷࢮޙ͸ൿີݤ͕ൿີʹอͨΕ͍ͯΔอূ͕ͳ͍ ૬ଓਓͱެূਓ (ҨݴॻΛอଘͦ͠ͷਖ਼౰ੑΛอূ͢Δ୭͔) ͸ڞ๳͢Δ͔΋ ↑ ୭͔͕ϒϩοΫνΣʔϯͩͱݴͬͯചΓࠐΜͰདྷͨ΋ͷ͕ɺ ࠾༻ʹ஋͢Δ͔Ͳ͏͔Λςετ͢ΔͨΊʹ࢖͑Δ໰͍ ղ͖͍ͨ໰୊͕͜ͷςετͷܗʹͳΔ → ෆ߹֨ͳΒ࢖͑ͳ͍ ղ͖͍ͨ໰୊͸͜ͷςετͷܗʹͳΒͳ͍ → ͦ΋ͦ΋ϒϩοΫνΣʔϯΛ࢖͏͜ͱͷҙຯ͕ͳ͍ ղ͖͍ͨ໰୊͸ແ͍ͷʹɺ͜ͷςετʹ߹֨͠ͳ͍ٕज़Λ࢖ͬͯʮϒϩοΫνΣʔϯʯ࣮ূ࣮ݧ → ௒ෆ޾ ྫ୊ 2 : σδλϧ௨՟ͷೋॏফඅΛݕग़ͤΑ (ফඅΛಛఆͷաڈʹ༳Δ͗ͳ͘Ґஔ͚ͮΑ) (ݕग़্ͨ͠Ͱޓ͍ʹໃ६͢ΔऔҾͷͲͪΒΛ࠾༻͢Δ͔͸࣮͸ผͷ໰୊) → ҉߸ٕज़ͷةຆԽ΍Ծ૝௨՟๫མʹΑΔఀࢭͷՄೳੑ·Ͱߟྀ͢Δͱɺ ϏοτίΠϯ౳ͷϒϩοΫνΣʔϯͰ΋ղ͚͍ͯͳ͍໰୊ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.8/18

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ʮҨݴॻςετʯ ͋ͳͨͷϒϩοΫνΣʔϯͰ͸ʮҨݴॻʯΛ࡞Ε·͔͢ʁ ຊਓ͕ ੜલʹॺ໊ͨ͠ ··ͷ͔ͨͪͰҨݴॻ͕อଘ͞Ε͍ͯΔ͜ͱΛ อଘ͍ͯ͠ΔγεςϜΛ৴༻ͤͣʹ (ͳͥͳΒڞ๳ͷՄೳੑ͕͋Δ͔Β) ར֐ؔ܎ͷ͋Δ͢΂ͯͷ૬ଓਓʹରͯ͠ূ໌Ͱ͖·͔͢ʁ ʮ಺෦Ͱվ͟Μ͞Ε͍ͯͳ͍͜ͱͷূ໌ʯͱʮσδλϧॺ໊ͷࣄޙ (Ӭ೥) ূ໌ʯ ͜Ε͸͋͘·Ͱ໰͍ͷ਽ܗͰ͋ΓɺҨݴॻʹݶΒͣɺΞϓϦέʔγϣϯʹԠͨ͡۩ମతͳ໰͍ΛཱͯΔ͜ͱ͕ॏཁ ଟ͘ͷ͍ΘΏΔϓϥΠϕʔτ/ίϯιʔγΞϜͷ୆ாٕज़͸ (গͳ͘ͱ΋ૉͷ··Ͱ͸) ͜ͷςετʹ߹֨Ͱ͖ͳ͍͸ͣͰ͢ ͔ͱ͍ͬͯύϒϦοΫͳ΋ͷ͸֎ҼʹΑΓఀࢭͯ͠͠·͍ɺಈ͔͍ͨ͠ਓʑͷҙࢥ͚ͩͰ͸ܧଓͰ͖ͳ͍ڪΕ͕͋Γ·͢ ֎Ҽ : ҉߸ٕज़ͷةຆԽ΍Ծ૝௨՟ͷ๫མ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.9/18

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BBc-1 ͸ʮҨݴॻςετʯʹ߹֨͢Δٕज़ͱͯ͠ ઃܭ͠ɺͦͷࢀরιϑτ΢ΣΞΛఏڙ͢Δ ࠓ·Ͱͷ࿩ʹɺΑ͘ݴΘΕΔʮ෼ࢄʯ ʮڞ༗ʯ΍ʮඇதԝूݖʯ͕ೖ͍ͬͯͳ͍͕ʁ ⇒ ʮҨݴॻςετʯʹ߹֨͢ΔͨΊʹ͸ɺ ʮதԝʯʹτϥετ͸ஔ͚·ͤΜ தԝʹҐஔ͚ͮΒΕ͖ͯͨػೳͷ಺෦Ͱվ͟Μ͕ߦΘΕͯͳ͍͜ͱͷʮূ໌ʯΛɺ֎෦Ͱߦ͑Δ͜ͱ͕ॏཁ վ͟ΜΛ (৵ೖऀʹͱͬͯ)ʮ೉͘͢͠Δʯ͚ͩͰ͸ෆे෼ ͦͷଞɺղ͖͍ͨ໰୊Λղ͘ͷʹඞཁͳཁૉٕज़͸ɺϒϩοΫνΣʔϯҎલ͔Βଘࡏ͍ͯ͠ΔͷͰ͸ʁ ྫ : Մ༻ੑɾ଱ো֐ੑͷͨΊͷෳ੡&෼ࢄ߹ҙٕज़ɺࣗ཯ੑͷͨΊͷ P2P, etc. ϒϩοΫνΣʔϯʹ͍ͭͯ૽͕Ε͍ͯΔ෦෼ͷଟ͘͸୯ʹʮ෼ࢄγεςϜͷੑ࣭ʯ ඞཁʹԠͯ͡طଘͷٕज़Λద༻Ͱ͖Δ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.10/18

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ػೳઃܭͷ֤࿦ υϝΠϯ ਖ਼౰ੑͷอূ ଘࡏੑͷূ໌ །Ұੑͷ߹ҙ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.11/18

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υϝΠϯ υϝΠϯ͸࣏ࣗ͞ΕΔ୆ாγεςϜͷ୯Ґ υϝΠϯ֎ʹ͸τϥϯβΫγϣϯͷ಺༰ͱଘࡏ͸ൿಗ͞Εɺ υϝΠϯ಺΁ͷΞΫηε͸੍ޚ͞ΕΔ ΞΫηεݖΛಘΒΕΔͷͰ͋Ε͹ɺෳ਺ͷυϝΠϯʹލ͕Δ ΞϓϦέʔγϣϯ΋ߏஙͰ͖Δ ίϯςΩετূ໌ (Proof of Context; PoCX) ར֐ؔ܎ͷແ͍υϝΠϯͷແؔ܎ͳίϯςΩετͷதʹɺ τϥϯβΫγϣϯͷ (ϋογϡ໦ͷϧʔτ) μΠδΣετΛຒΊࠐΉ͜ͱͰɺ ଘࡏੑΛ֎෦͔Βূ໌Մೳʹ͢Δ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.12/18

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ਖ਼౰ੑͷอূ – τϥϯβΫγϣϯͷߏ଄ )FBEFSϔομ தؒμΠδΣετ &WFOUTग़ྗ 3FGFSFODFTೖྗ 3FMBUJPOTࣗ༝ࢀর 8JUOFTTFTॺ໊ऀ $SPTT3FGཤྺަࠩ $SPTT3FG τϥϯβΫγϣϯ*% 4JHOBUVSFTॺ໊ ཤྺަࠩ͞ΕͨτϥϯβΫγϣϯͷଘࡏΛ ݕূ͢ΔͨΊʹ༻͍ΒΕΔɻ ࢦఆ͞ΕͨτϥϯβΫγϣϯ*%ͱͳΓɺ ݕূ͢΂͖ࣝผࢠΛ$SPTT3FGηΫγϣϯʹ ؚΉΑ͏ͳσʔλΛِ଄͢Δ͜ͱ͸ۃΊͯࠔ೉ɻ ॺ໊͸υϝΠϯ֎Ͱ͸ ݕূͰ͖ͳ͍ ެ։ݤͷਖ਼౰ੑ͕ະ஌ͳͨΊ ඞཁͳॺ໊Λଗ্͑ͨͰ͜ͷߏ଄͕Ϩοδϟʔʹ֨ೲ͞ΕΔ͜ͱΛҎͯɺτϥϯβΫγϣϯ͸ϑΝΠφϧͱͳΔ UTXO (ೖग़ྗؔ܎ͷهड़) ͱঢ়ଶͷτϥοΩϯάͷ͍ͣΕͷํ๏Ͱ΋τϥϯβΫγϣϯΛهड़Ͱ͖Δ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.13/18

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ਖ਼౰ੑͷอূ – ࣝผࢠͱެ։ݤͷ෼཭ " " ೖྗͳ͠ ॺ໊ηΫγϣϯ 59 " Ѽͯ ॺ໊ʹ࢖͏ ϖΞ ॺ໊ͷݕূʹ࢖͏ ެ։ݤͷ μΠδΣετ ͸ࣝผࢠͱ Ұக͢Δ͔ " ͷࣺͯൿີݤ " ͷൿີݤ܈ " ͷެ։ݤ܈ "ͷࣝผࢠ "ͷࣝผࢠ Ѽઌ มߋݖΛ ΋ͭ ରԠ Ϛϧνγά΋ར༻Մ " ͷࣺͯެ։ݤ "ͷ ॺ໊ ग़ྗ ॳظରԠ͚ͮ ެ։ݤμΠδΣετ ࣝผࢠΛެ։ݤͷμΠδΣετͱ͠ɺ ެ։ݤ܈ͱͷॳظରԠ͚ͮΛߦ͏ 59 ͸ ࣝผࢠͱϖΞͱͳΔൿີݤͰॺ໊͞Εͯ ͍ͳ͚Ε͹ͳΒͳ͍͜ͱʹ͢Δɻ ൿີݤ͕ࣦΘΕͨΒΞηοτͷίϯτϩʔϧΛࣦ͏ɺͱ͍͏ࣄଶΛආ͚ΔͨΊɺࣝผࢠͱެ։ݤ͸෼཭͢Δඞཁ͕͋Δ ࣝผࢠͱެ։ݤͷରԠ͚ͮ͸ΞϓϦέʔγϣϯʹ೚͞Ε͓ͯΓɺ্͸ͦͷํ๏ͷҰྫ (bbc1-lib-std Ͱఏڙ) BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.14/18

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ଘࡏੑͷূ໌ – ΞϯΧϦϯά ϒϩοΫνΣʔϯ ެڞۭؒ Ϣʔβ ଘࡏɾདྷྺূ໌αʔϏε Ϛ ồ Ϋ ϧ ໦ ϚʔΫϧϧʔτ ෦෼໦ͷऔಘ ϚʔΫϧϧʔτͷ୳ࡧ ຒ Ί ࠐ Έ ʜ ʜ ه࿥  ه࿥  ه࿥  ه࿥  ϋογϡ஋ ϋογϡ஋ ϋογϡ஋ ϋογϡ஋ ϋογϡ஋ ϋογϡ஋ "1* ϋογϡ஋ ɾ࣮ࡍʹ͸਺ઍɾ਺ສ݅ͷه࿥ΛϚʔΫϧ໦ʹͰ͖Δɻ ͦͷ৔߹Ͱ΋໦ͷߴ͞͸ ʙ ఔ౓ɻ ɾه࿥  ͷଘࡏΛ֬ೝ͢ΔͨΊʹ͸ɺ੨Ͱࣔͨ͠ ෦෼໦͑͞ಘΒΕΕ͹ϚʔΫϧϧʔτΛܭࢉͰ͖Δɻ ίϯςΩετূ໌͕࣮ಇ͢Δ·ͰͷؒɺϨοδϟʔαϒγεςϜʹΑΓఏڙ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.15/18

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ଘࡏੑͷূ໌ – ίϯςΩετূ໌ λΠϚʔ 59 $SPTT3FG ηΫγϣϯ λΠϚʔ 59 $SPTT3FG ηΫγϣϯ 59 υϝΠϯ" λΠϜελϯϓαʔϏεΛఏڙ υϝΠϯ# υϝΠϯ$ $SPTT3FG ηΫγϣϯ 59 $SPTT3FG ηΫγϣϯ 59 $SPTT3FG ηΫγϣϯ 59 $SPTT3FG ηΫγϣϯ ࣌ؒ ΞϓϦέʔγϣϯʹ৴༻͞ΕΔαʔϏε͕पظతʹλΠϚʔ59Λൃߦ͢Δ ࢀর UΑΓલʹىͬͨ͜ͱ ূ໌͞ΕΔ Uͷޙʹىͬͨ͜ͱ ূ໌͞ΕΔ UͱUͷؒʹىͬͨ͜ͱ ূ໌͞ΕΔ ࢀর͞ΕΔ͜ͱͰɺλΠϚʔ59ͷ ଘࡏ΋·ͨূ໌͞ΕΔ ࢀর ࢀর ҼՌؔ܎ͳͲʹΑΓલޙʹ഑ஔ͞ΕΔ ࢀর ࢀর ࣌ࠁU ࣌ࠁU ࢀর λΠϜελϯϓαʔϏε͸ແͯ͘΋Α͍ (૬ର࣌ࠁΛޓ͍ʹূ໌͢Δ) ʮࢀরʯ͸ < ૬खυϝΠϯ ID, ૬खτϥϯβΫγϣϯ ID or ϋογϡ໦ϧʔτ > Λ֨ೲ͢Δ͜ͱ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.16/18

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།Ұੑͷ߹ҙ Ξηοτ͸௨ৗͷઃܭͰ͸࠴຿ऀ΍੹೚ऀ͕ଘࡏ͢Δ Ҡస͕ೋॏʹى͜Δ (ೋॏফඅ; double spending) ৔߹ʹෆརӹΛඃΔͷ͸ ͦͷ࠴຿ऀ/੹೚ऀ ैͬͯɺҠస΍ঢ়ଶૢ࡞Ұൠʹ࠴຿ऀ/੹೚ऀͷॺ໊Λཁ͢ΔΑ͏ʹ ΞϓϦέʔγϣϯΛߏ੒͢Δ ࠴຿ऀ/੹೚ऀ͕୯Ұނো఺ (single point of failure) ʹͳΔͷΛආ͚ΔͨΊɺ ඞཁͳΒ͹ෳ੡ͱ෼ࢄ߹ҙ (Paxos ܥ) Λߦ͏ ࣝผࢠͱެ։ݤ͸෼཭͞Ε͍ͯΔͨΊɺෳ੡͸ݸʑʹݤϖΞΛ࣋ͯΔ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.17/18

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͓ΘΓʹ ϒϩοΫνΣʔϯͷਅՁΛൃش͢ΔͨΊʹɺϒϩοΫνΣʔϯͷઃܭΛࣺͯͯ BBc-1 Λઃܭ͍ͯ͠Δ ݱࡏɺίΞͷઃܭ͸ version 1.2 ͰɺҾ͖ଓ͖ચ࿅͍ͤͯ͘͞ଞɺ ϥΠϒϥϦͷॆ࣮Խ΍αϯϓϧΞϓϦέʔγϣϯͷ֦ॆΛߦ͍ͬͯ͘ BBc-1 : Beyond Blockchain One — Design Paper — 2018-12-19 – p.18/18