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  • bitdays.co.kr/2021/04/17/%ec%b2%99%ec%b6%94-%ea%b2%bd-%eb%82%98%ec%82%ac-%ec%8b%9c%ec%8a%a4%ed%85%9c-%ec%8b%9c%ec%9e%a5-2020-%ec%82%b0%ec%97%85-%ea%b0%80%ea%b2%a9-%eb%8f%99%ed%96%a5-%ed%81%ac%ea%b8%b0-%ed%8f%89%ea%b0%80/ (port 80)