Watchers

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  Kelle Kersey

  https://bitcoin-review.net/%eb%a8%b9%ed%8a%80%ea%b2%80%ec%a6%9d-%ec%95%88%ec%a0%84%ed%95%9c-%eb%8f%84%eb%b0%95%ec%9d%98-%ec%8b%9c%ec%9e%91%ec%a0%90/