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ohashimasaki's profile
Masaki Ohashi
Masaki Ohashi
Masaki Ohashi
@ohashimasaki

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Masaki Ohashi

@ohashimasaki

software developer. 主食はコーヒーです。デザートはグリーンカレーです。ITエンジニアではありません。ツイートはフィクションです。 http://soundcloud.com/ohashi-masaki 

Sendai, Japan
ohashimasaki.github.io
Joined April 2011

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    Masaki Ohashi‏ @ohashimasaki Feb 28
    • Report Tweet

    これ通読するととても勉強になる。とくにLedgerの章。 HyperledgerはLinux Foundationが作ってるブロックチェーン仕様で、仮想通貨はなし。ブロックチェーンのみ。 https://hyperledger-fabric.readthedocs.io/en/latest/key_concepts.html …

    5:21 AM - 28 Feb 2019
    • 1 Retweet
    • 7 Likes
    • KUDO🚴‍♂️Muttonski🍛Takashi NutHouse ひーちゃん Yusei👨‍💻Tahara taylor 利奈みんとbot/マンガでLinux!
    1 reply 1 retweet 7 likes
      1. New conversation
      2. Masaki Ohashi‏ @ohashimasaki Feb 28
        • Report Tweet

        ブロックチェーンは改竄できないようにハッシュで連鎖させたデジタル証明書で、仮想通貨投資とかAIは関係ありませんw

        1 reply 0 retweets 1 like
        Show this thread
      3. Masaki Ohashi‏ @ohashimasaki Feb 28
        • Report Tweet

        技術自体はハッシュとデジタル証明書でどっちも枯れた技術なので難しくないんだけど、使い所だよね… メールもPGPとか似たような技術が古くからあるけど、あんまり普及しなかったしw

        1 reply 0 retweets 0 likes
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      4. Masaki Ohashi‏ @ohashimasaki Feb 28
        • Report Tweet

        みんなで買い物のレシートを持ち寄って、ランダムにA4の紙に貼り付けて一杯になったら縮小コピーを取って次の紙の先頭に貼り、その紙にもレシートを貼り付けて一杯になったら…というのが「ブロック」で、前のブロックの証跡が次のブロックに付いてるので、どこか改竄すると全部がおかしくなる仕組み。

        1 reply 2 retweets 6 likes
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      5. Masaki Ohashi‏ @ohashimasaki Feb 28
        • Report Tweet

        たぶん日本で一番分かりやすい説明だったんじゃないかw

        1 reply 0 retweets 0 likes
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      6. Masaki Ohashi‏ @ohashimasaki Feb 28
        • Report Tweet

        貼り付ける紙のクオリティをめちゃくちゃ上げて紙を作るのを大変にして、その紙を作る対価として付与されるのが「仮想通貨」なので、別に仮想通貨はなくてもブロックチェーン自体にはまったくなんの問題もない。 我ながら分かりやすい説明だな〜

        0 replies 0 retweets 2 likes
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      7. End of conversation

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