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From: Karl-Johan Alm <karljohan-alm@garage.co.jp>
Date: Wed, 11 Apr 2018 14:21:10 +0900
Message-ID: <CALJw2w6Guc6rX7A_8Nqob+w1=NKi2DfH9aj2-sg2EfgRFjDw0g@mail.gmail.com>
To: Maksim Solovjov <maxim.solovjov@gmail.com>,
Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
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Subject: Re: [bitcoin-dev] Few questions regarding ListTransaction
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On Wed, Apr 11, 2018 at 5:29 AM, Maksim Solovjov via bitcoin-dev
<bitcoin-dev@lists.linuxfoundation.org> wrote:
> 1. What does it mean for a transaction ( with 0 confirmations ) to be
> trusted or not?
It is trusted if (1) it is final (i.e. it can't be replaced), (2) it
is not in a block that was reorged out (negative confirmation count),
(3) the 'spend zero conf change' option is set, (4) it is in the
mempool, and (5) all inputs are from us.
> 2. When does confirmations can be -1 ( conflicted )?
> What does it mean to have conflicted transaction?
> Is it about Transaction Malleability? Double Spend? or both?
A transaction is conflicted if a different transaction exists that
spends the same inputs. A transaction gets -N confirmations if it is
mined in a block, and that block is orphaned away, and a different
transaction is mined in the new block so that the transaction becomes
a double spend.
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