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  • bitdays.co.kr/2021/05/27/blockchain%eb%8a%94-%eb%a0%88%ec%a0%80-%ea%b8%b0%ec%88%a0-%eb%b6%84%ec%82%b0-%ec%8b%9c%ec%9e%a5-%ed%81%ac%ea%b8%b0-%ea%b8%80%eb%a1%9c%eb%b2%8c-%eb%b6%84%ec%84%9d-%ea%b0%9c%ec%9a%94-%ec%a4%91/ (port 80)