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Dappsを支えるオラクル
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oidong
February 16, 2018
Technology
1
2.8k
Dappsを支えるオラクル
oidong
February 16, 2018
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Transcript
%BQQTΛࢧ͑Δ ΦϥΫϧ Gunosy ৽نࣄۀ෦ Πϯλʔϯ @ryoidong
ࣗݾհ 3ZPUB,PKJNB !SZPJEPOH (VOPTZ৽نࣄۀ෦Πϯλʔϯ 4'$̏ %BQQTͷٕज़Ϗδωεௐࠪ
&Y7J.&5σΟϨΫλʔ
ΞδΣϯμ ɾͦͦΦϥΫϧͱ ɾ%BQQTͷͨΊͷΦϥΫϧιϦϡʔγϣϯ
ΦϥΫϧͱ
ਆୗ
ྫɿ༧ଌࢢ ʮࠓͷຊͷఱؾ͕ΕͰ͋ΕΔ͔൱͔ʯ ͰεϚʔτίϯτϥΫτΛ࣮ߦ͢Δ
֎෦ͷ"1*ηϯαʔσʔλͳͲ Πϯλʔωοτ্ͷσʔλΛ༻͍ͨ εϚʔτίϯτϥΫτΛ࡞͍ͨ͠
͔͠͠
ϒϩοΫνΣʔϯͰωοτϫʔΫͰ ίϯηϯαεΛऔΔͨΊɺ ࣮ߦຖʹมΘΔཚͳͲෆ࣮֬ͳσʔλΛѻ͑ͳ͍ ܾ·ͬͨσʔλΛ νΣʔϯʹ͑Δखஈ͕ඞཁ
ΦϥΫϧ
͞·͟·ͳνΣʔϯ֎ͷιʔε͔ΒσʔλΛऔΓग़͠ɺ εϚʔτίϯτϥΫτʹͦͷσʔλΛ͢ͷɻ ΦϥΫϧͱɺʮσʔλΩϟϦΞʯͰ͋Δɻ
ͨͩ͠ʜ ֎෦͔Β͞Εͨσʔλʹ͍ͭͯɺ ਖ਼͠͞ͷίϯηϯαεΛऔΔ͜ͱ͕͍͠ ˠ͋ΔओମΛ৴པ͢ΔʮूݖܕΦϥΫϧʯ ˠ৴པͳ͠ʹ߹ҙ͢ΔʮࢄܕΦϥΫϧʯ
ͨͩ͠ʜ ֎෦͔Β͞Εͨσʔλʹ͍ͭͯɺ ਖ਼͠͞ͷίϯηϯαεΛऔΔ͜ͱ͕͍͠ ˠ͋ΔओମΛ৴པ͢ΔʮूݖܕΦϥΫϧʯ ˠ৴པͳ͠ʹ߹ҙ͢ΔʮࢄܕΦϥΫϧʯ ࣮༻తʹ΄΅ͪ͜Β͕ΘΕ͍ͯΔ ˞ࢄܕΦϥΫϧӡӦͷΠϯηϯςΟϒઃܭ͕͘͠ɺݱࡏӡ༻͞Ε͍ͯΔͷ͕΄΅ͳ͍
%BQQTͰ ΦϥΫϧΛ͏ ιϦϡʔγϣϯ
3FBMJUZ,FZT ҝସϨʔτɺ҉߸௨՟औҾɺ'SFFCBTFͷΦʔϓϯσΟϨΫτϦͳ Ͳͷσʔλιʔε͔Βɺࢦఆ࣌ʹ͓͚Δࣄ࣮ͷਅِఆΛߦ͑Δ جຊແྉͷαʔϏεɻ ࣄ࣮ʹରͯ͠ɺʮ:FTʯʮ/Pʯͷͭͷ&$%4"҉߸伴ϖΞΛੜ ͠ɺਖ਼͍͠ํͷൿີ伴͕ެ։͞ΕΔΈɻ IUUQTXXXSFBMJUZLFZTDPN
3FBMJUZ,FZT :FT QVCMJD@LFZ /0 1VCMJD@LFZ :FT QSJWBUF@LFZ /0 QSJWBUF@LFZ ʮ͕ऴΘΔ࣌Ͱͷ#5$ͷՁ͕֨ສԁΛ͍͑ͯΔ͔ʁʯ
֎෦σʔλιʔε "1*Ͱࣗಈతʹ ࢦఆ࣌ͷࣄ࣮Λ֬ೝ
3FBMJUZ,FZT :FT QVCMJD@LFZ /0 1VCMJD@LFZ :FT QSJWBUF@LFZ /0 QSJWBUF@LFZ ʮ͕ऴΘΔ࣌Ͱͷ#5$ͷՁ͕֨ສԁΛ͍͑ͯΔ͔ʁʯ
֎෦σʔλιʔε ެ։͞Εͳ͍ ਖ਼͍͠ํͷ݁Ռͷ ൿີ伴͕ࣗಈͰެ։͞ΕΔ ˞"1*Ͱऔಘ͞Εͨࣄ࣮͕ؒҧ͍ͬͯΔͱߟ͑Δ߹ɺ ༗ྉͰ3FBMJUZ,FZTͷਓؒʹ࠶֬ೝΛґཔͰ͖Δɻ
3FBMJUZ,FZT 1SPT$POT #JUDPJOͰ3FBMJUZ,FZTΛ༻͍ͨτϥϯβΫγϣϯ͕ͭ͘ ΕΔɻ ྫɿIUUQTHJUIVCDPNSFBMJUZLFZTSFBMJUZLFZTFYBNQMFTCMPCNBTUFS SFBMJUZLFZTEFNPQZ ೝূہͱ͔ͯ͠ͳΓूݖత
ެ։͞Ε͍ͯΔҰ෦ͷ"1*ʹใऔಘ͕ݶΒΕ͍ͯΔ
0SBDMJ[F &UISFVNͳͲͷϒϩοΫνΣʔϯʹσʔλΛτϥϯβΫγϣ ϯʹྲྀ͠ࠐΉܗͷΦϥΫϧɻ ैྔ՝੍ۚ 1SPPG4IJFMEͰσʔλऔಘͷਖ਼ੑΛΦϯνΣʔϯͰ֬ೝͰ ͖ΔΈ͕࣮͞Ε͍ͯΔɻʢݱࡏςετωοτͷΈʣ IUUQXXXPSBDMJ[FJU
εϚʔτίϯτϥΫτ 0SBDMJ[F ֎෦σʔλιʔε σʔλΛ&UISFVNͷ τϥϯβΫγϣϯʹೖΕɺ @@DBMMCBDLΛ࣮ߦͯ͠Λ௨ σʔλιʔε͔Β PSBDMJ[F͕σʔλΛड͚औΔ PSBDMJ[Fʹ ֎෦ͷใऔಘΛґཔ
σʔλιʔε औಘϦΫΤετΛߦ͏
0SBDMJ[F TPMJEJUZDPEF ίʔϧόοΫ ݺͼग़͠
0SBDMJ[F 1SPT$POT ࣮͕؆୯ 0SBDMJ[FͦͷͷͷίϯτϥΫτ͕ެ։͞Ε͍ͯΔ σʔλͷਖ਼ੑΛݕূ͢ΔΈ͕͋Δɻ جຊతʹύϒϦοΫνΣʔϯ༻ͷαʔϏεͳͷͰɺ
ػີσʔλͳͲΛऔΓѻ͏͜ͱ͕͍͠ɻ
ͦͷଞͷΦϥΫϧίϯηϓτ $IBJO-JOL ʮ"'VMMZ%FDFOUSBMJ[FE0SBDMF/FUXPSLʯΛᨳ͏ΦϥΫϧɻ Ϣʔβʔɺ$IBJO-JOL্ͷෳͷΦϥΫϧϊʔυΛΦϥΫϧͷධͳͲ͔Βબ ͠ɺϊʔυͷճΛฏ४Խ͍ͯ͘͠ίϯηϓτɻʢਖ਼ࣜϦϦʔε͍ͯ͠ͳ͍ʣ (OPTJT ݱࡏ0SBDMJ[FͳͲͷDFOUMJ[FΦϥΫϧΛத৺ʹ࣮༧ఆ͕ͩɺ &5)Λ༻͍ͯ݁Ռʹର͢ΔҟٞͷνϟϨϯδ
6MUJNBUF0SBDMF Λ͢Δ͜ͱ ͕Ͱ͖ΔɺࢄܕΦϥΫϧͷίϯηϓτͳͲ༧ఆ͞Ε͍ͯͨɻ
·ͱΊ ΦϥΫϧνΣʔϯ֎ͷσʔλΛνΣʔϯʹ͢ͷ ݱঢ়0SBDMJ[F͕͍͘͢ɺσϑΝΫτײ ͔͠͠ɺͲΕࠜຊతʹूݖܕͳͷͰɺ ࢄܕͷίϯηϓτ·ͩ͜Ε͔Βʹظ