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http://ralit.org/2017/09/10/autotrade-altcoins-with-5-lines-ruby-on-coincheck/
【失敗】5行のRubyでアルトコインの自動取引(開発環境必要なし)【coincheck】 - (failed) autotrade altcoins with 5 lines Ruby on coincheck (Ruby environment not required)