Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Proof of Stake Casper

yamarkz
February 02, 2018

Proof of Stake Casper

ブロックチェーン勉強会 #1 発表資料

yamarkz

February 02, 2018
Tweet

More Decks by yamarkz

Other Decks in Technology

Transcript

  1. &UIFSFVNݱࡏͷεςʔλε ࡞੒ऀ 7JUBMJL#VUFSJO ެ։೔  γεςϜ 1SPPGPG8PSL ίϯηϯαεΞϧΰϦζϜ &UIBTI τʔΫϯൃߦ্ݶ

    ͳ͠ ϒϩοΫੜ੒ใु &5) ϒϩοΫੜ੒ִؒ ฏۉඵ ϝδϟʔόʔδϣϯ .FUSPQPMJT #Z[BOUJVN ಛ௃ 4NBSU$POUSBDUT
  2. ࠓճ͸͜͜ͷ࿩ ࡞੒ऀ 7JUBMJL#VUFSJO ެ։೔  γεςϜ 1SPPGPG8PSL ίϯηϯαεΞϧΰϦζϜ &UIBTI τʔΫϯൃߦ্ݶ

    ͳ͠ ϒϩοΫੜ੒ใु &5) ϒϩοΫੜ੒ִؒ ฏۉඵ ϝδϟʔόʔδϣϯ .FUSPQPMJT #Z[BOUJVN ಛ௃ 4NBSU$POUSBDUT &UIFSFVNݱࡏͷεςʔλε
  3. 'SPOUJFS ະ։୓ )PNFTUFBE
 Ո԰ෑ .FUSPQPMJT
 େ౎ࢢ 4FSFOJUZ
 ฏ੩ ࠓίί ϝδϟʔΞοϓσʔτ

    ϋʔυϑΥʔΫ &UIFSFVNͷϝδϟʔΞοϓσʔτϑϩʔ ։ൃॳظ͔ΒେܕΞοϓσʔτΛ࣮ࢪ͠ɺਐԽΛଓ͚͍ͯΔ ʁ .FUSPQPMJTୈ஄ʮ#Z[BOUJVNʯ͕׬ྃ
  4. 'SPOUJFS ະ։୓ )PNFTUFBE
 Ո԰ෑ .FUSPQPMJT
 େ౎ࢢ 4FSFOJUZ
 ฏ੩ ϝδϟʔΞοϓσʔτ ϋʔυϑΥʔΫ

    &UIFSFVNͷϝδϟʔΞοϓσʔτϑϩʔ ʁ %BHHFS)BTIJNPUP &UIBTI &UIBTI $BTQFS 1SPPGPG8PSL 1SPPGPG4UBLF όʔδϣϯ͝ͱʹίϯηϯαεΞϧΰϦζϜ΋มԽ͖͍ͯͯ͠Δ
  5. 'SPOUJFS ະ։୓ )PNFTUFBE
 Ո԰ෑ .FUSPQPMJT
 େ౎ࢢ 4FSFOJUZ
 ฏ੩ ϝδϟʔΞοϓσʔτ ϋʔυϑΥʔΫ

    &UIFSFVNͷϝδϟʔΞοϓσʔτϑϩʔ ʁ %BHHFS)BTIJNPUP &UIBTI &UIBTI $BTQFS 1SPPGPG8PSL 1SPPGPG4UBLF ࠓճ͸͜ͷίϯηϯαεΞϧΰϦζϜͷ࿩
  6. w ΤωϧΪʔফඅ໰୊ "4*$ϚγϯͷಋೖͳͲ 
 εςʔΫྔʹԠͯ͡ϒϩοΫੜ੒֬཰͕มԽ͢ΔͷͰܭࢉྔΛ཈͑ΒΕΔ w ߈ܸ໰୊ ϚΠχϯάϓʔϧͷ݁ୗ 
 εςʔΫྔʹґଘ͢ΔܗʹͳΔͷͰɺશମͷͷεςʔΫΛ֬อ͢Δͷ͸ඇݱ࣮త

    1SPPGPG4UBLF͸௚༁͢Δͱʮֻ͚ۚʹΑΔূ໌ʯ ίϯτϥΫτPSಛఆͷΞυϨεʹૹ৴͞ΕͨτʔΫϯྔʹԠͯ͡ϒϩοΫঝೝͷ੒ޭ֬཰͕มΘΔɻ ʮ੒ޭ֬཰͕มΘΔʯͷఆٛ͸༷ʑɻEJ⒏DVMUZUBSHFUͷ஋͕εςʔΫྔͰมԽ͢Δ৔߹΍ɺϒϩο Ϋੜ੒ݖ͕ϥϯμϜʹৼΓ෼͚ΒΕΔγεςϜͰɺੜ੒ݖΛಘΒΕΔ֬཰͕มԽ͢Δ৔߹ͳͲɻ 1P4͸1P8๊͕͑ΔʮΤωϧΪʔফඅ໰୊ʯ΍ʮ߈ܸ໰୊ʯͳͲͷ໰୊Λղܾ͢Δίϯηϯαε ΞϧΰϦζϜͱͯ͠ߟ͑ΒΕͨɻ ·ͨɺ&UIFSFVNͰ͸τʔΫϯͷྲྀಈੑΛଛͳ͏Մೳੑͷ͋ΔDPJO"HFͷ࢓૊Έ͸ಋೖ͞Εͳ͍ɻ ౓εςʔΫͨ͠τʔΫϯ͸໿ϲ݄ϩοΫ͞ΕΔ 7JUBMJLͷൃݴ 1SPPGPG4UBLF 1P8๊͕͑Δ໰୊ͱ1P4ʹΑΔղܾ
  7. $BTQFS΁ͷҠߦ͸ଟஈ֊తʹߦΘΕΔ༧ఆ &UIBTI 1P8্ʹల։͢Δ1P4 1P8ͰϒϩοΫΛϚΠχϯάޙɺ
 1P4ͰϑΝΠφϥΠζ 1P8ͱ1P4ͷϋΠϒϦοτӡ༻
 ϚΠχϯάใुΛݮগ͠ɺ
 7BMJEBUPSͷใुΛ૿΍͢ʣ $BTQFS 1P4

        ݚڀ։ൃ͕ελʔτ͠ݕূ͕ਐΊΒΕ͍ͯΔ $BTQFSόʔδϣϯͰ͸1P4''(͕ಋೖ͞ΕΔ༧ఆ Ҏ߱ͷৄࡉͳٕज़࢓༷ͳͲ͸ܾ·͍ͬͯͳ͍ $BTQFSҠߦͷϩʔυϚοϓ
  8. ϒϩοΫ໨ ϒϩοΫ໨ ϒϩοΫ໨ ''(͸1P8ͰϒϩοΫΛੜ੒Λߦ͍ɺ1P4Λ༻͍ͯϝΠϯνΣʔϯΛܾఆ͢Δɻ 1P8 ͷ্ʹ1P4͕৐͔ͬͬͯಈ͘Πϝʔδ  ϒϩοΫຖʹʮνΣοΫϙΠϯτʯͱݺ͹ΕΔ۠੾ΓΛઃఆɻ νΣοΫϙΠϯτ͝ͱʹ༗ޮͩͱࢥ͏νΣʔϯͷϒϩοΫΛόϦσʔλʔͷ౤ථʹΑ Γܾఆ͢Δɻ

    ܾఆʹ͸ஈ֊ͷϥ΢ϯυΛ౿Έɺϥ΢ϯυ໨ ϒϩοΫ໨ Ͱਖ਼౰Խ KVTUJpFE ɻ ϥ΢ϯυ໨ ϒϩοΫ໨ Ͱ֬ఆ 'JOBMJ[F ͞ΕΔɻ $BTQFS''(͸1P8ͱ1P4ͷϋΠϒϦοτ $BTQFS'SJFOEMZ'JOBMJUZ(BEHFU 1P8ͷ্ʹ1P4͕৐͔ͬͯಈ͘Πϝʔδ 1SPPGPG8PSL 1SPPGPG4UBLF ˞''(͸8IJUF1BQFSͰ঺հ͞Εͨ࢓૊Έͳ ͷͰɺࠓޙมΘΔՄೳੑେ
  9. ''(͸1P8ͰϒϩοΫΛੜ੒Λߦ͍ɺ#'54UZMF104Λ༻͍ͯϝΠϯνΣʔϯΛܾ ఆ͢Δɻ 1P8ͷ্ʹ1P4͕৐͔ͬͬͯಈ͘Πϝʔδ  ϒϩοΫຖʹʮνΣοΫϙΠϯτʯͱݺ͹ΕΔ۠੾ΓΛઃఆɻ νΣοΫϙΠϯτ͝ͱʹ༗ޮͩͱࢥ͏νΣʔϯͷϒϩοΫΛόϦσʔλʔͷ౤ථʹΑ Γܾఆ͢Δɻ ܾఆʹ͸ஈ֊ͷϥ΢ϯυΛ౿Έɺϥ΢ϯυ໨ ϒϩοΫ໨ Ͱਖ਼౰Խ

    KVTUJpFE ɻ ϥ΢ϯυ໨ ϒϩοΫ໨ Ͱ֬ఆ 'JOBMJ[F ͞ΕΔɻ ϒϩοΫ໨ ϒϩοΫ໨ ϒϩοΫ໨ $BTQFS''(͸1P8ͱ1P4ͷϋΠϒϦοτ $BTQFS'SJFOEMZ'JOBMJUZ(BEHFU 1P8ͷ্ʹ1P4͕৐͔ͬͯಈ͘Πϝʔδ 1SPPGPG8PSL 1SPPGPG4UBLF pOBMJ[FEKVTUJpFE pOBMJ[FEKVTUJpFE