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ϒϩοΫνΣʔϯ։ൃ
Πϯλʔϯͷࢹ͔Β
Hi-Ether #8
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લজ / DMM.com Πϯλʔϯ
@arika_nashika
ɾDMM
>ϚΠχϯάϥϘνʔϜ
>εϚʔτίϯτϥΫτνʔϜ
Blockchainnͷߦ͘ʹܞΘ͍ͬͯ͘
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DMMάϧʔϓ͕
ϒϩοΫνΣʔϯͰऔΓΜͰ͍Δ͜ͱ
ϒϩοΫνΣʔϯ։ൃ
ϚΠχϯά
҉߸௨՟औҾ
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͕͍ࣗͬͯΔ͜ͱ
ϒϩοΫνΣʔϯ։ൃ
ϚΠχϯά
҉߸௨՟औҾॴ
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εϚʔτίϯτϥΫτνʔϜ։ൃ߹॓ in ܰҪ
• 8/22 - 8/24ʹܰҪʹͯ։ൃ߹॓
• UXͷݕূ
• ϑϩϯτΤϯυɺόοΫΤϯυɺίϯτϥΫτɹ
ͷ݁߹
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ࠓޙνʔϜͷօ͞Μͱௐ͍ࠪͨ͜͠ͱ
• 99% Fault Tolerance
• FFG Casper
• EOS
• Plasma
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ࠓޙνʔϜͷօ͞Μͱௐ͍ࠪͨ͜͠ͱ
• 99% Fault Tolerance Consensus
• FFG Casper
• EOS
• Plasma
• Tendermint
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99% Fault Tolerance Consensus
• ઌɺvitalik͞Μ͕
But did you know that if you add even
more assumptions, …, you can increase
fault tolerance all the way to 99%?
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99% Fault Tolerance Consensus
• Ұൠʹɺվ͟Μੑʹඞཁͳshare
• ಉظωοτϫʔΫ
• share: 50%
• ඇಉظωοτϫʔΫ
• share: 33%
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99% Fault Tolerance Consensus
• “Add assumption”
• Observer
• not actively participating in the consensus
• care about its output
• to also be actively watching the consensus
• not just downloading its output after the fact
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• “ϒϩοΫνΣʔϯ ࣗવݱ Ͱ͋Δ”?