Спостерігачі

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  Anderson White

  https://bitcoin-review.net/%ea%b2%bd%eb%82%a8-%eb%b0%a4%ec%95%8c%eb%b0%94-%ec%83%88%eb%a1%9c%ec%9a%b4-%ec%9d%bc%ec%9e%90%eb%a6%ac%ec%9d%98-%ea%b8%b0%ed%9a%8c/