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From: Christian Decker <decker.christian@gmail.com>
To: bitcoin-dev@lists.linuxfoundation.org
Subject: Re: [bitcoin-dev] Committed bloom filters for improved wallet performance and SPV security
Date: Thu, 5 Jan 2017 15:48:33 +0100	[thread overview]
Message-ID: <20170105144833.GA5580@nex> (raw)
In-Reply-To: <347a0909-affd-da0c-f7f8-09fa76bcb279@voskuil.org>

On Wed, Jan 04, 2017 at 11:45:18PM -0800, Eric Voskuil via bitcoin-dev wrote:
> On 01/04/2017 11:06 PM, Chris Priest via bitcoin-dev wrote:
> > The best way is to connect to the mempool of each miner and check to
> > see if they have your txid in their mempool.
> > 
> > https://www.antpool.com/api/is_in_mempool?txid=334847bb...
> > https://www.f2pool.com/api/is_in_mempool?txid=334847bb...
> > https://bw.com/api/is_in_mempool?txid=334847bb...
> > https://bitfury.com/api/is_in_mempool?txid=334847bb...
> > https://btcc.com/api/is_in_mempool?txid=334847bb...
> > 
> > If each of these services return "True", and you know those services
> > so not engage in RBF, then you can assume with great confidence that
> > your transaction will be in the next block, or in a block very soon.
> > If any one of those services return "False", then you must assume that
> > it is possible that there is a double spend floating around, and that
> > you should wait to see if that tx gets confirmed. The problem is that
> > not every pool runs such a service to check the contents of their
> > mempool...
> > 
> > This is an example of mining centralization increasing the security of
> > zero confirm.
> 
> A world connected up to a few web services to determine payment validity
> is an example of a bitcoin security catastrophe.
> 
> e
> 

And it's a great way to tell every miner who you are and what
transactions you are sending/receiving. An absolute privacy
nightmare...

-- cdecker


  reply	other threads:[~2017-01-05 14:48 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-09  8:26 [bitcoin-dev] Committed bloom filters for improved wallet performance and SPV security bfd
2016-05-09  8:57 ` Gregory Maxwell
2016-05-11 20:06 ` Bob McElrath
2016-05-11 20:29   ` Bob McElrath
2016-07-28 21:07     ` Leo Wandersleb
2017-01-06 22:07       ` Erik Aronesty
2017-01-03 20:24     ` bfd
     [not found] ` <77b6dd25-0603-a0bd-6a9e-38098e5cb19d@jonasschnelli.ch>
2017-01-03 20:18   ` bfd
2017-01-03 22:18     ` Aaron Voisine
2017-01-03 22:28       ` bfd
2017-01-03 23:06       ` adiabat
2017-01-03 23:46         ` Aaron Voisine
2017-01-04  0:10           ` bfd
2017-01-04  0:36             ` Aaron Voisine
2017-01-04  6:06               ` Eric Voskuil
2017-01-04 16:13         ` Leo Wandersleb
2017-01-04  7:47       ` Jonas Schnelli
2017-01-04  8:56         ` Aaron Voisine
2017-01-04 10:13           ` Jorge Timón
2017-01-04 11:00             ` Adam Back
2017-01-06  2:15           ` bfd
2017-01-06  7:07             ` Aaron Voisine
2017-01-05  7:06         ` Chris Priest
2017-01-05  7:45           ` Eric Voskuil
2017-01-05 14:48             ` Christian Decker [this message]
2017-01-06 20:15             ` Chris Priest
2017-01-06 21:35               ` James MacWhyte
2017-01-06 21:50                 ` Eric Voskuil
2017-01-06  2:04           ` bfd
2017-03-15 22:36             ` Tom Harding
2017-03-16  0:25               ` bfd
2017-03-16 15:05                 ` Tom Harding
2017-02-17  0:28 ` Chris Belcher
2017-04-01 23:49   ` bfd

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