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詳解 Ethereum Transaction / detail ethereum transaction

詳解 Ethereum Transaction / detail ethereum transaction

blockchain.tokyo #6

Kazuki YAMAGUCHI
PRO

March 16, 2018
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  1. 2018/03/16
    blockchain.tokyo #6 in Cyber Agent
    Kazuki Yamaguchi (@yamarkz) Gunosy Inc.
    ৄղ Ethereum Transaction
    ~Transactionͷ֓ཁ͔Β࢓૊Έ·Ͱ·Δͬͱ঺հ~

    View Slide

  2. Kazuki Yamaguchi / @yamarkz
    Software Engineer @Gunosy
    Graduated from Spring 2017
    WebApplication Rails
    Dapps Solidity
    Research CryptoCurrency & Blockchain
    Github & Twitter @yamarkz

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  3. Gunosy Blockchain Blog΍ͬͯ·͢ʂ
    ʮhttp://blockchain.gunosy.ioʯor ʮάϊγʔ ϒϩοΫνΣʔϯʯ

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  4. ※τϥϯβΫγϣϯʹ͍ͭͯৄղʹ࿩ͨ͢ΊɺϒϩοΫνΣʔϯɺΞΧ΢ϯτɺϚΠχϯάͳͲɺ
    पลγεςϜͷ࿩͸୺ંΓ·͢
    Agenda
    • Ethereum & Transaction
    • 2 Type Transaction
    • Message 4 Pattern
    • Transaction Life Cycle
    • Transaction for Data Structure
    • Transaction Pool & Nonce
    • Transaction Releasing

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  5. Ethereum & Transaction

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  6. ※ ίϯτϥΫτ࣮ߦͷΠϝʔδ
    ※ EtherʹΑΔࢧ෷͍ͷΠϝʔδ
    ίϯτϥΫτͷ࣮ߦ
    => τϥϯβΫγϣϯͷૹ৴
    ICO΁ͷࢀՃ
    => τϥϯβΫγϣϯͷૹ৴
    Etherͷૹۚ
    => τϥϯβΫγϣϯͷૹ৴
    ίϯτϥΫτͷ࡞੒
    => τϥϯβΫγϣϯͷૹ৴
    Ethereumʹ͓͍ͯɺTransaction͸શͯͷ࢝·Γ

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  7. EthereumͷTransaction͸େ͖͘2ͭʹ෼͚ΒΕΔ
    Contract Creation Message
    (৽ͨͳίϯτϥΫτ࡞੒) (ίϯτϥΫτͷ࣮ߦ or Etherͷૹۚ)
    New!!!
    A͞Μ͔ΒB͞Μ΁ 3Ether ૹۚ
    ίϯτϥΫτͷؔ਺࣮ߦ
    ৽ͨͳίϯτϥΫτͷσϓϩΠ A B

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  8. (৽ͨͳίϯτϥΫτ࡞੒)
    Contract Creation
    ৽ͨͳίϯτϥΫτͷσϓϩΠ
    New!!!
    ͬͪ͜ΛΑΓਂ͘෼ղͯ͠ΈΔ
    EthereumͷTransaction͸େ͖͘2ͭʹ෼͚ΒΕΔ
    A͞Μ͔ΒB͞Μ΁ 3Ether ૹۚ
    A B
    ίϯτϥΫτͷؔ਺࣮ߦ
    Message
    (ίϯτϥΫτͷ࣮ߦ or Etherͷૹۚ)

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  9. Message͸4ͭʹ෼ྨ͞ΕΔ
    Transaction From EOA EVM code From CA
    To EOA
    To CA
    EOA EOA
    Transaction
    Message
    EOA
    CA
    Message
    CA
    EOA
    Message
    Code
    CA
    Code
    CA
    Transaction
    Message
    From: Ethereum EVM illustrated

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  10. Transaction Life Cycle

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  11. 1. Transactionʹॺ໊
    2. TransactionΛϊʔυʹϒϩʔυΩϟετ
    ϊʔυ
    Tx
    ༗ޮͳτϥϯβΫγϣϯ͔όϦσʔγϣϯ
    ؔ࿈ϊʔυʹ఻ൖ
    TxPool
    Metamask etc…
    Queued
    Pending
    ɾ఻ൖ࣌ͷTransaction͸ɺSerialize͞ΕΔ
    ɾGas PriceʹΑͬͯϊʔυ͸อ࣋͢Δ͔൑அͰ͖Δ
    Tx
    Tx
    Tx
    Tx
    Block
    Tx
    Tx
    ϚΠχϯά
    ϒϩοΫνΣʔϯ
    Txͷঢ়گʹΑͬͯɺ
    PendingͱQueued෼͚ΒΕΔ
    ΞΧ΢ϯτͷঢ়ଶ͕มΘΔ
    ΞΧ΢ϯτͷঢ়ଶ͕มΘΔ
    START
    ϚΠφʔϊʔυ
    ϊʔϚϧϊʔυ
    ϩʔΧϧϊʔυ
    A
    B Pendingͷத͔ΒϚΠχϯά͢ΔTxΛɺ
    ϚΠφʔ͕બ୒͢Δ

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  12. Pendingͷத͔ΒϚΠχϯά͢ΔTxΛɺ
    ϚΠφʔ͕બ୒͢Δ
    ؔ࿈ϊʔυʹ఻ൖ
    TxPool
    Queued
    Pending
    ɾ఻ൖ࣌ͷTransaction͸ɺSerialize͞ΕΔ
    ɾGas PriceʹΑͬͯϊʔυ͸อ࣋͢Δ͔൑அͰ͖Δ
    Tx
    Tx
    Tx
    Tx
    Block
    Tx
    Tx
    ϚΠχϯά
    ϒϩοΫνΣʔϯ
    Txͷঢ়گʹΑͬͯɺ
    PendingͱQueued෼͚ΒΕΔ
    ΞΧ΢ϯτͷঢ়ଶ͕มΘΔ
    ΞΧ΢ϯτͷঢ়ଶ͕มΘΔ
    ϚΠφʔϊʔυ
    ϊʔϚϧϊʔυ
    B
    A
    ϊʔυ
    Tx
    ༗ޮͳτϥϯβΫγϣϯ͔όϦσʔγϣϯ
    ϩʔΧϧϊʔυ
    1. Transactionʹॺ໊
    2. TransactionΛϊʔυʹϒϩʔυΩϟετ
    Metamask etc…
    START

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  13. Pendingͷத͔ΒϚΠχϯά͢ΔTxΛɺ
    ϚΠφʔ͕બ୒͢Δ
    1. Transactionʹॺ໊
    2. TransactionΛϊʔυʹϒϩʔυΩϟετ
    ϊʔυ
    Tx
    ༗ޮͳτϥϯβΫγϣϯ͔όϦσʔγϣϯ
    Metamask etc…
    Tx
    Tx
    Tx
    Tx
    Block
    ϚΠχϯά
    ϒϩοΫνΣʔϯ
    ΞΧ΢ϯτͷঢ়ଶ͕มΘΔ
    ΞΧ΢ϯτͷঢ়ଶ͕มΘΔ
    START
    ϩʔΧϧϊʔυ
    A
    B
    ؔ࿈ϊʔυʹ఻ൖ
    ɾ఻ൖ࣌ͷTransaction͸ɺSerialize͞ΕΔ
    ɾGas PriceʹΑͬͯϊʔυ͸อ࣋͢Δ͔൑அͰ͖Δ
    Tx
    ϚΠφʔϊʔυ
    ϊʔϚϧϊʔυ
    TxPool
    Queued
    Pending
    Tx
    Txͷঢ়گʹΑͬͯɺ
    PendingͱQueued෼͚ΒΕΔ

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  14. 1. Transactionʹॺ໊
    2. TransactionΛϊʔυʹϒϩʔυΩϟετ
    ϊʔυ
    Tx
    ༗ޮͳτϥϯβΫγϣϯ͔όϦσʔγϣϯ
    ؔ࿈ϊʔυʹ఻ൖ
    Metamask etc…
    ɾ఻ൖ࣌ͷTransaction͸ɺSerialize͞ΕΔ
    ɾGas PriceʹΑͬͯϊʔυ͸อ࣋͢Δ͔൑அͰ͖Δ
    Tx
    ϒϩοΫνΣʔϯ
    ΞΧ΢ϯτͷঢ়ଶ͕มΘΔ
    ΞΧ΢ϯτͷঢ়ଶ͕มΘΔ
    START
    ϊʔϚϧϊʔυ
    ϩʔΧϧϊʔυ
    A
    B
    Tx
    Tx
    Tx
    Tx
    Block
    ϚΠχϯά
    ϚΠφʔϊʔυ
    TxPool
    Queued
    Pending
    Tx
    Txͷঢ়گʹΑͬͯɺ
    PendingͱQueued෼͚ΒΕΔ
    Pendingͷத͔ΒϚΠχϯά͢ΔTxΛɺ
    ϚΠφʔ͕બ୒͢Δ

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  15. Pendingͷத͔ΒϚΠχϯά͢ΔTxΛɺ
    ϚΠφʔ͕બ୒͢Δ
    1. Transactionʹॺ໊
    2. TransactionΛϊʔυʹϒϩʔυΩϟετ
    ϊʔυ
    Tx
    ༗ޮͳτϥϯβΫγϣϯ͔όϦσʔγϣϯ
    ؔ࿈ϊʔυʹ఻ൖ
    TxPool
    Metamask etc…
    Queued
    Pending
    ɾ఻ൖ࣌ͷTransaction͸ɺSerialize͞ΕΔ
    ɾGas PriceʹΑͬͯϊʔυ͸อ࣋͢Δ͔൑அͰ͖Δ
    Tx
    Tx
    Tx
    Tx
    Block
    Tx
    Tx
    Txͷঢ়گʹΑͬͯɺ
    PendingͱQueued෼͚ΒΕΔ
    START
    ϚΠφʔϊʔυ
    ϊʔϚϧϊʔυ
    ϩʔΧϧϊʔυ
    A
    ϚΠχϯά
    ΞΧ΢ϯτͷঢ়ଶ͕มΘΔ
    ΞΧ΢ϯτͷঢ়ଶ͕มΘΔ
    B
    ϒϩοΫνΣʔϯ
    A

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  16. 1. Transactionʹॺ໊
    2. TransactionΛϊʔυʹϒϩʔυΩϟετ
    ϊʔυ
    Tx
    ༗ޮͳτϥϯβΫγϣϯ͔όϦσʔγϣϯ
    ؔ࿈ϊʔυʹ఻ൖ
    TxPool
    Metamask etc…
    Queued
    Pending
    ɾ఻ൖ࣌ͷTransaction͸ɺSerialize͞ΕΔ
    ɾGas PriceʹΑͬͯϊʔυ͸อ࣋͢Δ͔൑அͰ͖Δ
    Tx
    Tx
    Tx
    Tx
    Block
    Tx
    Tx
    ϚΠχϯά
    ϒϩοΫνΣʔϯ
    Txͷঢ়گʹΑͬͯɺ
    PendingͱQueued෼͚ΒΕΔ
    ΞΧ΢ϯτͷঢ়ଶ͕มΘΔ
    ΞΧ΢ϯτͷঢ়ଶ͕มΘΔ
    START
    ϚΠφʔϊʔυ
    ϊʔϚϧϊʔυ
    ϩʔΧϧϊʔυ
    A
    B Pendingͷத͔ΒϚΠχϯά͢ΔTxΛɺ
    ϚΠφʔ͕બ୒͢Δ
    Ұ࿈ͷྲྀΕΛܦͯɺτϥϯβΫγϣϯ͸࠷ऴతʹΞΧ΢ϯτͷঢ়ଶΛมߋ͢Δ

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  17. Transaction for Data Structure

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  18. Transaction
    Nonce
    Gas Price
    Gas Limit
    To
    Value
    v, r, s
    Init or data
    CLI্Ͱ֬ೝͰ͖ΔTransactionͷத਎
    Transaction for Data Structure

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  19. CLI্Ͱ֬ೝͰ͖ΔTransactionͷத਎
    Nonce
    Gas Price
    Gas Limit
    To
    Value
    v, r, s
    Init or data
    ϢχʔΫͰ͋Δ͜ͱΛࣔ͢
    ૹۚ͢ΔEtherͷֹ
    Contract࣮ߦ࣌ʹফඅ͢ΔGasͷ੍ݶ
    EVMίʔυ͕ೖΔϑΟʔϧυ
    Transaction
    Transaction for Data Structure

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  20. Transaction Pool & Nonce

    View Slide

  21. Pendingͷத͔ΒϚΠχϯά͢ΔTxΛɺ
    ϚΠφʔ͕બ୒͢Δ
    1. Transactionʹॺ໊
    2. TransactionΛϊʔυʹϒϩʔυΩϟετ
    ϊʔυ
    Tx
    ༗ޮͳτϥϯβΫγϣϯ͔όϦσʔγϣϯ
    ؔ࿈ϊʔυʹ఻ൖ
    Metamask etc…
    ɾ఻ൖ࣌ͷTransaction͸ɺSerialize͞ΕΔ
    ɾGas PriceʹΑͬͯϊʔυ͸อ࣋͢Δ͔൑அͰ͖Δ
    Tx
    Tx
    Tx
    Tx
    Block
    Tx
    ϚΠχϯά
    ϒϩοΫνΣʔϯ
    ΞΧ΢ϯτͷঢ়ଶ͕มΘΔ
    ΞΧ΢ϯτͷঢ়ଶ͕มΘΔ
    START
    ϚΠφʔϊʔυ
    ϊʔϚϧϊʔυ
    ϩʔΧϧϊʔυ
    A
    B
    TxPool
    Queued
    Pending
    Tx
    ͜͜ͷ࿩
    Txͷঢ়گʹΑͬͯɺ
    PendingͱQueued෼͚ΒΕΔ

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  22. Transaction Pool
    Transaction Pool (ҎԼɺTxPool)ͱ͸ɺϒϩοΫʹऔΓࠐ·ΕΔલͷτϥϯβΫγϣϯ͕Ұ࣌
    తʹอଘ͞ΕΔۭؒɻۭؒ͸ϊʔυͷϚγϯϝϞϦ্ʹ࡞ΒΕΔɻ
    ϚγϯϝϞϦ্ʹ࡞ΒΕΔͨΊɺϚγϯͷిݯ͕མͪΔͱTxPool಺ͷτϥϯβΫγϣϯ΋ফ͑
    Δɻ
    ϊʔυ͸ࣗ਎ͷϝϞϦۭؒʹؚΊΔτϥϯβΫγϣϯΛGasPriceͰબผ͢Δ͜ͱ͕Ͱ͖Δɻ
    TxPoolͷۭؒ͸2ͭ
    Pending
    • ϒϩοΫʹऔΓࠐ·ΕͯOKͳτϥϯβΫγϣϯ͕อଘ͞ΕΔ
    Queued
    • ϒϩοΫʹऔΓࠐ·ΕͯNGͳτϥϯβΫγϣϯ͕อଘ͞ΕΔ
    • τϥϯβΫγϣϯͷNonceʹΪϟοϓ͕ଘࡏ͢Δ৔߹ɺPendingͰ͸ͳ͘ɺ
    Queuedʹอଘ͞ΕΔɻQueuedͷ໾ׂ͸ɺωοτϫʔΫ͔Β౸ணͨ͠ॱং֎τϥ
    ϯβΫγϣϯΛΧόʔ͢Δ͜ͱɻ(τϥϯβΫγϣϯͷॱংΛकΔ͜ͱ)

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  23. Transaction Pool & Nonce
    TxPool ͷPendingͱQueuedͷڍಈ
    Nonce 37ͷTx͕଍Γͳ͍ঢ়گ
    Nonce 37͕TxPoolʹϒϩʔυΩϟετ or ఻ൖ͞Εͨ͜ͱʹΑΓɺ
    QueuedͷTx͸nonceͷॱং͕ἧ͏ɻ
    ἧ͏͜ͱͰϚΠχϯάOKͳTxʹͳΓPendingʹҠಈ͢Δ

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  24. Transaction Nonce
    From: Mastering Ethereum
    Nonce͸ಉҰΞΧ΢ϯτ͔ΒͷTransaction Orderͷূ໌Ͱ͋Γɺ
    τϥϯβΫγϣϯͷೋॏࢧग़໰୊Λղܾ͢Δɻ
    Nonce͸Transactionʹ͓͍ͯ࠷΋ॏཁͳίϯϙʔωϯτͰ͋Γɺ
    ࠷΋ཧղ͞Ε͍ͯͳ͍ՕॴͰ΋͋Δɻ
    Tx Nonce 1 Tx Nonce 2 Tx Nonce 3 Tx Nonce 4
    ಉҰΞΧ΢ϯτ͔ΒͷτϥϯβΫγϣϯ͸NonceͷॱংʹԊͬͯɺϒϩοΫʹऔΓࠐ·ΕΔɻ
    Nonce1ͱNonce2ͷτϥϯβΫγϣϯ͕ಉҰΞΧ΢ϯτA͔Β࡞ΒΕͨ৔߹ɺNonce2ͷτϥϯ
    βΫγϣϯ͸Nonce1ͷτϥϯβΫγϣϯ͕ϚΠχϯά͞Εͳ͍ݶΓɺϚΠχϯά͞Εͳ͍ɻ
    NonceͷॱংʹԊͬͯτϥϯβΫγϣϯ͕ϒϩοΫʹऔΓࠐΉϓϩτίϧʹΑΓɺೋॏࢧग़Λ๷
    ͍Ͱ͍Δɻ

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  25. Transaction Releasing

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  26. Transaction Releasing
    ϒϩʔυΩϟετͨ͠τϥϯβΫγϣϯΛͳ͔ͬͨ͜ͱʹ͍ͨ͠
    or
    τϥϯβΫγϣϯ͕ͳ͔ͳ͔ϚΠχϯά͞Εͳ͍ͷͰGas PriceΛ্͛௚͍ͨ͠
    Ethereumʹ͸ϒϩʔυΩϟετͨ͠τϥϯβΫγϣϯΛ࡟আ͢Δ࢓૊Έ͕ͳ͍
    ͔͠͠ɺ
    ະঝೝτϥϯβΫγϣϯΛ ߋ৽ ͢Δ͜ͱ͕Մೳ
    ~έʔεελσΟ~

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  27. Transaction Releasing
    ະঝೝτϥϯβΫγϣϯͷߋ৽ (Releasing)
    ߋ৽͍ͨ͠τϥϯβΫγϣϯʹৼΒΕ͍ͯΔNonceͱಉ͡NonceΛࢦఆͨ͠τϥϯβΫγϣϯ
    Λ࡞੒͠ɺϒϩʔυΩϟετ͢Δ͜ͱͰະঝೝτϥϯβΫγϣϯΛߋ৽͢Δ͜ͱ͕Ͱ͖Δɻ
    ߋ৽Ͱ͸஋ͷमਖ਼͕ՄೳͳͷͰɺ3Etherͷૹ৴͢ΔͷΛͳ͔ͬͨ͜ͱʹ͢ΔͨΊʹɺ0Etherͷ
    τϥϯβΫγϣϯΛૹ৴͠ͳ͓ͤ͹ɺະঝೝτϥϯβΫγϣϯ͸ߋ৽͞ΕΔͷͰɺͳ͔ͬͨ͜
    ͱʹͳΔɻ(※ख਺ྉͰ͋ΔGas୅͸ඞཁ)
    ߋ৽Ͱ͸Ŋߋ৽ઌτϥϯβΫγϣϯ͕࣋ͭGasPriceͷ10%Ҏ্ߴ͍ GasPriceͷߋ৽τϥϯβΫ
    γϣϯΛ࡞੒͠ͳ͚Ε͹͍͚ͳ͍
    Tx
    A͞Μ͔ΒB͞Μ΁
    3Etherͷૹۚ
    Tx
    A͞Μ͔ΒB͞Μ΁
    0Etherͷૹۚ
    ߋ৽ઌ
    ߋ৽ݩ ߋ৽ʂʂ
    ϒϩʔυΩϟετ
    Tx
    A͞Μ͔ΒB͞Μ΁
    0Etherͷૹۚ
    TxPool

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  28. Transaction Releasing
    Transaction Releasingͷڍಈ
    Nonce 41ͷະঝೝτϥϯβΫγϣϯ
    ಉ͡Nonce Ͱ͔ͭɺ10%Ҏ্ߴ͍GasPriceͷTxΛϒϩʔυΩϟετ͢Δ͜ͱͰߋ৽
    ߋ৽TxʹΑΓɺ3Etherͷૹ͕ۚ0EtherʹͳΓɺ࣮࣭ͷૹۚ͸औΓফ͢͜ͱ͕Ͱ͖͍ͯΔ

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  29. Transactionʹ͸2ͭͷେ͖ͳ෼ྨͱ4ͭͷϝοηʔδύλʔϯ͕͋Δ
    Ethereum͸ΞΧ΢ϯτ΍ίϯτϥΫτͱ͍͏֓೦͕͋ΔͨΊɺ

    τϥϯβΫγϣϯͷ࢓૊Έ΍ߏ଄΋ෳࡶ
    Nonceͷ࢓૊Έ͕Life CycleΛཧղ͢Δ্Ͱॏཁͳ伴ͱͳΔ
    Contract։ൃΛਐΊΔ্ͰTransactionͷ࢓૊ΈΛཧղ͢Δͷ͸ॏཁ
    ·ͱΊ

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  30. ɾWhat is Gas?
    ɾEthereum EVM Illustrated
    ɾMastering Ethereum
    ɾEthereum White Paper
    ɾEthereum Yellow Paper
    ɾEthereum Wiki
    ɾLife Cycle of an Ethereum Transaction
    ࢀߟࢿྉ

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  31. Q&A 1
    Q. τϥϯβΫγϣϯͷૹۚݩ͸Ͳ͏΍ͬͯ൑அ͢Δͷʁ
    A. τϥϯβΫγϣϯʹؚ·ΕΔॺ໊͸ૹ৴ݩͷΞΧ΢ϯτͷൿີ伴͔Β͔͠࡞ΒΕͳ͍ͨΊɺͦͷॺ
    ໊Ͱ൑அ͢Δ
    Q.τϥϯβΫγϣϯΛ࡞੒ͨ͠΋ͷͷɺΞΧ΢ϯτεςʔτͷߋ৽ͷॱংͰૹۚऀ͕े෼ͳEtherΛ
    ͍࣋ͬͯͳ͔ͬͨ৔߹τϥϯβΫγϣϯ͸Ͳ͏ͳΔͷʁ
    A. τϥϯβΫγϣϯ͸ૹۚ͸ࣦഊͱͳΔ΋ͷͷɺτϥϯβΫγϣϯࣗମ͸ϚΠχϯά͞Εɺख਺ྉͷ
    Έ͕ϚΠφʔʹࢧ෷ΘΕΔ
    Q.ΞΧ΢ϯτ͕࣋ͭNonceΑΓ΋௿͍஋Λ߱ͬͨτϥϯβΫγϣϯΛϒϩʔυΩϟετ͢ΔͱͲ͏ͳΔ
    ͷʁ
    A. ϒϩʔυΩϟετઌͷϩʔΧϧϊʔυͷόϦσʔγϣϯͰ஄͔ΕTxPoolʹೖΒͣɺτϥϯβΫγϣ
    ϯ͸ഁغ͞Εɺૹ৴ݩʹ͸Τϥʔ͕ฦΔ
    Q.τϥϯβΫγϣϯʹઃఆͰ͖ΔGas Limitͷ஋͸࠷ߴ͍ͭ͘ʁ
    A. ཧ࿦্͸ϒϩοΫͷGas Limitͱಉ͡

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  32. Q&A 2
    Q. ϒϩʔυΩϟετͨ͠τϥϯβΫγϣϯΛ࡟আ͍ͨ͠৔߹Ͳ͏͢Ε͹ྑ͍ͷʁ
    A. EthereumͰ͸ϒϩʔυΩϟετͨ͠τϥϯβΫγϣϯͷ࡟আػೳ͸͋Γ·ͤΜɻԾʹɺτϥϯβΫ
    γϣϯΛͳ͔ͬͨ͜ͱʹ͍ͨ͠ (ૹۚΛऔΓফ͍ͨ͠) ৔߹͸ɺಉ͡NonceͰValue஋Λ0ʹ͠Gas
    PriceΛߴ͍΋ͷʹ࡞੒ͯ͠ϒϩʔυΩϟετ͢Δ
    Q. ૹۚͷΈͰར༻ͨ͠৔߹ͷख਺ྉͬͯͲ͏ͳΔͷʁ
    A. GasPrice × τϥϯβΫγϣϯͷόΠτ௕ ͷ஋͕ख਺ྉʹͳΔ
    Q. TxPoolͷ྆ʑ͕ᷓΕΔ΄ͲτϥϯβΫγϣϯ͕ཷ·ͬͨ৔߹ɺᷓΕͨτϥϯβΫγϣϯ͸Ͳ͏ͳΔ
    ͷʁ
    A. τϥϯβΫγϣϯͷGasPrice͕௿͍΋ͷ͔ΒPool͔Β௥͍ग़͞Ε͍ͯ͘
    Q. NonceͷॱংͰɺઌʹߴ͍NonceͷτϥϯβΫγϣϯΛϚΠφʔ͕ϚΠχϯά͠ɺϚΠχϯάʹ੒ޭ
    ͨ͠৔߹ɺϒϩοΫ͸Ͳ͏ͳΔͷʁ
    A. ԾʹɺϚΠχϯάʹ੒ޭͨ͠ͱͯ͠΋ɺNonceͷॱংΛक͍ͬͯͳ͍τϥϯβΫγϣϯΛؚΜͩϒ
    ϩοΫ͸ແޮͱͳΓɺνΣʔϯʹܨ͕Εͳ͍

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  33. ͝੩ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ✨

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