RE: 세계최초 블록체인 600년전 조선에서 도입 되었다.

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세계최초 블록체인 600년전 조선에서 도입 되었다.

in kr •  7 years ago 

흥미로운 사실이네요.ㅋㅋ
고맙습니다.

kr
7 years ago by

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      ·  7 years ago 

    ^^감사합니다. 좋은 하루되세요!

    Downvoting a post can decrease pending rewards and make it less visible. Common reasons:

    • Disagreement on rewards
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    • Hate speech or trolling
    • Miscategorized content or spam

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