[bitcoin-dev] BIP draft: OP_CHECKBLOCKATHEIGHT
tomz at freedommail.ch
Fri Sep 23 14:37:39 UTC 2016
On Friday 23 Sep 2016 09:57:01 Luke Dashjr via bitcoin-dev wrote:
> This BIP describes a new opcode (OP_CHECKBLOCKATHEIGHT) for the Bitcoin
> scripting system to address reissuing bitcoin transactions when the coins
> they spend have been conflicted/double-spent.
Can you walk us through a real live usecase which this solves? I read it and
I think I understand it, but I can't see the attack every giving the attacker
any benefit (or the attacked losing anything).
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