Subject: Re: [Bitcoin-development] F2Pool has enabled full replace-by-fee

From: Frank Flores <[email-masked]>
Date: Fri, 19 Jun 2015 16:05:56 -0500

Has anyone from Mycelium weighed in on this? Is their doublespend attack
detection broken with this kind of irresponsible behavior?

On Fri, Jun 19, 2015 at 3:39 PM, Matt Whitlock <[email-masked]>
wrote:

> On Friday, 19 June 2015, at 9:18 am, Adrian Macneil wrote:
> > If full-RBF sees any significant adoption by miners, then it will
> actively
> > harm bitcoin adoption by reducing or removing the ability for online or
> POS
> > merchants to accept bitcoin payments at all.
>
> Retail POS merchants probably should not be accepting vanilla Bitcoin
> payments, as Bitcoin alone does not (and cannot) guarantee the
> irreversibility of a transaction until it has been buried several blocks
> deep in the chain. Retail merchants should be requiring a co-signature from
> a mutually trusted co-signer that vows never to sign a double-spend. The
> reason we don't yet see such technology permeating the ecosystem is
> because, to date, zero-conf transactions have been irreversible "enough,"
> but this has only been a happy accident; it was never promised, and it
> should not be relied upon.
>
>
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