From: Tony Churyumoff <tony991@gmail•com>
To: Bitcoin Protocol Discussion <bitcoin-dev@lists•linuxfoundation.org>
Subject: [bitcoin-dev] Fwd: Hiding entire content of on-chain transactions
Date: Wed, 10 Aug 2016 10:53:01 +0300 [thread overview]
Message-ID: <CAL3p6zrYwxFRC5JctwKsLwEzENWL0B2iUgO3crubaYkc=m5SdQ@mail.gmail.com> (raw)
In-Reply-To: <CAL3p6zqdKgkFWSDZYqVERvX2iGyS3qaLZae-kDp3Y-s1rmB2Zg@mail.gmail.com>
This troll is harmless. A duplicate spend proof should also be signed
by the same user (Alice, in your example) to be considered a double
spend.
2016-08-09 3:18 GMT+03:00 James MacWhyte <macwhyte@gmail•com>:
> One more thought about why verification by miners may be needed.
>
> Let's say Alice sends Bob a transaction, generating output C.
>
> A troll, named Timothy, broadcasts a transaction with a random hash,
> referencing C's output as its spend proof. The miners can't tell if it's
> valid or not, and so they include the transaction in a block. Now Bob's
> money is useless, because everyone can see the spend proof referenced and
> thinks it has already been spent, even though the transaction that claims it
> isn't valid.
>
> Did I miss something that protects against this?
>
next prev parent reply other threads:[~2016-08-10 7:53 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-08 15:30 [bitcoin-dev] " Tony Churyumoff
2016-08-08 15:47 ` Henning Kopp
2016-08-08 16:03 ` Tony Churyumoff
2016-08-08 21:41 ` James MacWhyte
2016-08-08 21:53 ` Peter Todd
[not found] ` <CAL3p6zpvv7ph9CJQF6E1VVdwCKKFLNe2EVh=JE=R0Gpt4y=1Tw@mail.gmail.com>
2016-08-10 7:50 ` [bitcoin-dev] Fwd: " Tony Churyumoff
2016-08-08 23:42 ` [bitcoin-dev] " Tony Churyumoff
2016-08-09 0:03 ` James MacWhyte
[not found] ` <CAL3p6zr76k1F07dtvxQ8hiOiK_ZvVFBmW=ESYem60udUQmM+Cw@mail.gmail.com>
2016-08-10 7:51 ` [bitcoin-dev] Fwd: " Tony Churyumoff
2016-08-09 0:18 ` [bitcoin-dev] " James MacWhyte
[not found] ` <CAL3p6zqdKgkFWSDZYqVERvX2iGyS3qaLZae-kDp3Y-s1rmB2Zg@mail.gmail.com>
2016-08-10 4:31 ` James MacWhyte
2016-08-10 8:37 ` Tony Churyumoff
2016-08-10 7:53 ` Tony Churyumoff [this message]
2016-08-09 7:26 ` Henning Kopp
[not found] ` <CAL3p6zqj7bc=qrayBBK=O6p2b2PBNO3n5EMFf_1dR1oMq581hg@mail.gmail.com>
2016-08-10 7:52 ` [bitcoin-dev] Fwd: " Tony Churyumoff
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