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Date: Tue, 06 May 2014 10:49:05 -0700
From: Tom Harding <tomh@thinlink.com>
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Cc: bitcoin-development@lists.sourceforge.net
Subject: Re: [Bitcoin-development] A statistical consensus rule for reducing
 0-conf double-spend risk
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Christophe Biocca wrote:

> it becomes trivial with a few tries to split the network into two
> halves: (tx1 before tx2, tx2 before tx1).

"before" implies T=0.  That is a much too optimistic choice for T; 50% 
of nodes would misidentify the respend.


> Tom Harding <tomh@thinlink.com> wrote:
>>    - Eventually, node adds a consensus rule:
>>       Do not accept blocks containing a transaction tx2 where
>>           - tx2 respends an output spent by another locally accepted
>> transaction tx1, and
>>           - timestamp(tx2) - timestamp(tx1) > T