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From: Robert Backhaus <robbak@robbak•com>
To: Bitcoin Development <bitcoin-development@lists•sourceforge.net>
Subject: Re: [Bitcoin-development] On-going data spam
Date: Tue, 9 Apr 2013 21:34:33 +1000	[thread overview]
Message-ID: <CA+i0-i-4PJkKPm=j0A0vHY8aTuk5p5xx2J-0uJWAKBgdje137w@mail.gmail.com> (raw)
In-Reply-To: <BLU0-SMTP1397D392A87B5A2E21636B8C8C60@phx.gbl>

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The obvious problem is that if you can frame it as a valid address, you can
put what you want there. If you can make it pass the validation, miners
have no way of knowing it's not a valid address.

Of course, there is nothing new about this. I ran strings on the blockchain
and found all sorts of ascii rubbish right from the beginning.


On 9 April 2013 21:17, Jay F <jayf@outlook•com> wrote:

> On 4/9/2013 4:09 AM, Peter Todd wrote:
> > On Tue, Apr 09, 2013 at 12:42:12PM +0200, Mike Hearn wrote:
> >> hack by changing the protocol. Nodes can serve up blocks encrypted
> under a
> >> random key. You only get the key when you finish the download. A
> blacklist
> > NAK
> >
> > Makes bringing up a new node dependent on other nodes having consistent
> > uptimes, particularly if you are on a low-bandwidth connection.
> >
> >> can apply to Bloom filtering such that transactions which are known to
> be
> >> "abusive" require you to fully download the block rather than select the
> >> transactions with a filter. This means that people can still access the
> > NAK
> >
> > No blacklists
> >
> It depends on how clever the spammers get encoding stuff. If law
> enforcement forensic tools can pull a jpeg header + child porn out of
> the blockchain, then there's a problem that needs mitigation.
>
>
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  reply	other threads:[~2013-04-09 12:00 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-09  1:22 Jeff Garzik
2013-04-09  9:28 ` Peter Todd
2013-04-09 10:42 ` Mike Hearn
2013-04-09 11:09   ` Peter Todd
2013-04-09 11:17     ` Jay F
2013-04-09 11:34       ` Robert Backhaus [this message]
2013-04-09 14:14     ` Mike Hearn
2013-04-09 14:39   ` Caleb James DeLisle
2013-04-09 18:56     ` steve
2013-04-09 19:25     ` Gregory Maxwell
2013-04-09 19:43       ` Mike Hearn
2013-04-09 14:50   ` Jeff Garzik
2013-04-09 14:53     ` Mike Hearn
2013-04-09 15:01       ` Jeff Garzik
2013-04-09 17:58       ` Peter Todd

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