Everyone should see it! Click here! Best cryptocurrency exchanger: https://700.by/101 Best cryptocurrency trading platform: https://700.by/102 A weakness has been found in the Bitcoin code which apparently makes it possible to spend BTC transactions twice. By taking advantage of Bitcoin’s RBF feature (Replace By Fee), a user can effectively send BTC to a merchant and then immediately recall it. The Replace By Fee feature was created to allow BTC users to speed up their transactions on the network. If a transaction takes too long, a user can re-send their original payment but with a higher fee. This replaces the original transaction, and kicks it further up the queue to be included in the next block. But a problem arises when another of BTC’s f
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