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From: Matt Whitlock <bip@mattwhitlock.name>
To: Natanael <natanael.l@gmail.com>
Date: Sun, 22 Feb 2015 08:50:30 -0500
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Cc: bitcoin-development@lists.sourceforge.net
Subject: Re: [Bitcoin-development] alternate proposal opt-in miner takes
double-spend (Re: replace-by-fee v0.10.0rc4)
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On Sunday, 22 February 2015, at 2:29 pm, Natanael wrote:
> In other words, you are unprotected and potentially at greater risk if you
> create a transaction depending on another zero-confirmation transaction.
This happened to one of the merchants at the Bitcoin 2013 conference in San Jose. They sold some T-shirts and accepted zero-confirmation transactions. The transactions depended on other unconfirmed transactions, which never confirmed, so this merchant never got their money.
I keep telling people not to accept transactions with zero confirmations, but no one listens.
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