[Bitcoin-development] Bitcoin TX fill-or-kill deterministic behavior

Jeff Garzik jgarzik at exmulti.com
Thu Apr 12 19:26:25 UTC 2012

On Thu, Apr 12, 2012 at 3:19 PM, Alan Reiner <etotheipi at gmail.com> wrote:
> My one big concern about this that users find a way to exploit this behavior
> for themselves.  If it's too easy for users to create tx they know will get
> stuck and expire, it's no different than letting them cancel their zero-conf
> transactions.  i.e. I pay 0.5 BTC in a store for a candy bar, so I send it
> using a combination of inputs and fees that I know will lead to it being
> stuck and expire.
> On the other hand, if such conditions are deterministic enough, it could be
> detected by the recipient and flagged.
> It's not a huge deal, but it's something to consider.

Do you have a -specific- concern that you feel may be exploited?

Expiration already occurs at random, as nodes shut down and restart,
log on and log off the network.

Jeff Garzik
exMULTI, Inc.
jgarzik at exmulti.com

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