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  • bitdays.co.kr/2021/05/13/%eb%aa%a8%eb%b0%94%ec%9d%bc-%ec%9e%a5%ec%b9%98-%ea%b4%80%eb%a6%ac-%ec%8b%9c%ec%9e%a5-%eb%b3%b4%ea%b3%a0%ec%84%9c%eb%8a%94%ec%9d%b4-%ec%97%85%ea%b3%84%ec%97%90%ec%84%9c-%ec%84%b8%ea%b3%84-2021/ (port 80)