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  • bitdays.co.kr/2021/05/05/%ea%b4%91%ed%95%99-%eb%ac%b8%ec%9e%90-%ec%9d%b8%ec%8b%9d-ocr-%ec%86%8c%ed%94%84%ed%8a%b8%ec%9b%a8%ec%96%b4-%ec%8b%9c%ec%9e%a5-%ec%88%98%ec%9d%b5-%ed%81%ac%ea%b8%b0-%ec%82%b0%ec%97%85-%ed%86%b5/ (port 80)