Re: [Bitcoin-development] Re-enabling simple tx replacement

[Gregory Maxwell <gmaxwell@gmail.com>]

On Sun, Jan 4, 2015 at 5:22 PM, Ross Nicoll <jrn@jrn.me.uk> wrote:
> Grabbing a simple test case:
> https://chain.so/tx/BTCTEST/f903a31f2474df737d324c60abf2407e1cf7e052844da4ccffbfab81cf6ac1f8
> - that won't lock until 0028 UTC on the 5th.
>
> I've tried closing the wallet, moving the wallet.dat file out of the
> way, and then attempting the spend transaction (which can be locked
> immediately), and it either rejects it on acceptance to mempool, or it
> is never included in a block.

Can you send me the actual raw transaction (that site doesn't appear
have a way to get it, only some cooked json output; which doesn't
include the sequence number).

As I said, it's a severe bug if unlocked transactions are being
relayed or mempooled far in advance.

> They can only replace a non-final transaction with a final transaction,

Ah I missed that the replacement had to be final. Thats indeed a much
more sane thing to do than I was thinking (sorry for some reason I saw
the +1 and thought it was just checking the sequence number was
higher.)

> I don't think that's a major issue?

If they can relay the first one to begin with its an an issue, the
replacement just makes it twice an issue. :)