From: Aaron Voisine <voisine@gmail•com>
To: Bitcoin Development <bitcoin-development@lists•sourceforge.net>
Subject: [Bitcoin-development] SPV clients and relaying double spends
Date: Thu, 25 Sep 2014 19:02:03 -0700 [thread overview]
Message-ID: <CACq0ZD4Ki=7Tba_2UhmuH-dPCbOnfXrJRcLPc+fP6Uur4FpG_A@mail.gmail.com> (raw)
There was some discussion of having nodes relay double-spends in order
to alert the network about double spend attempts.
A lot more users will be using SPV wallets in the future, and one of
the techniques SPV clients use to judge how likely a transaction is to
be confirmed is if it propagates across the network. I wonder if and
when double-spend relaying is introduced, if nodes should also send
BIP61 reject messages or something along those lines to indicate which
transactions those nodes believe to be invalid, but are relaying
anyway.
This would be subject to sybil attacks, as is monitoring propagation,
however it does still increase the cost of performing a 0 confirmation
double spend attack on an SPV client above just relaying double-spends
without indicating if a node believes the transaction to be valid.
Aaron Voisine
breadwallet.com
next reply other threads:[~2014-09-26 2:02 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-26 2:02 Aaron Voisine [this message]
2014-09-26 2:07 ` Matt Whitlock
2014-09-26 2:12 ` Aaron Voisine
2014-09-26 2:16 ` Matt Whitlock
2014-09-26 2:37 ` Aaron Voisine
2014-09-26 3:34 ` Christophe Biocca
2014-09-28 2:55 ` Tom Harding
2014-09-28 5:15 ` [Bitcoin-development] replace-by-fee v0.9.3 release Peter Todd
2014-09-28 17:03 ` Luke Dashjr
2014-09-26 16:27 ` [Bitcoin-development] SPV clients and relaying double spends s7r
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