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  • bitdays.co.kr/2021/05/15/%ec%97%b0%ea%b5%ac%ec%86%8c-%ec%a0%95%ec%88%98%ea%b8%b0-%ec%8b%9c%ec%9e%a5-%eb%b3%b4%ea%b3%a0%ec%84%9c%eb%8a%94-%ec%84%b8%ea%b3%84-2021-%ec%82%b0%ec%97%85-%eb%8f%99%ed%96%a5%ec%97%90-%ec%b5%9c-2/ (port 80)