WARNING: Bitcoin BTC Unsafe for Business, Attack Vector Dangerously Easy to Exploit

In a major blow to BTC security, we demonstrate how standard off-the-shelf wallets can purchase goods and trivially reverse the transaction upon leaving the store. The ability to double spend Bitcoin is made possible by the anti-feature replace-by-fee.

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Hayden Otto: https://twitter.com/haydenotto_
Bitcoin BCH: https://twitter.com/BitcoinBCHcom

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