Re: [Bitcoin-development] Double Spend Notification

2013-05-21 Thread Robert Backhaus
Not at all - ACK from me, fwiw. Any attempt at a double spend should be shouted from the housetops. What Miners should do with that is still up for debate, it seems. My opinion is that they should hold on and attempt to confirm the first, letting it go only if a conflicting transaction is mined

Re: [Bitcoin-development] Double Spend Notification

2013-05-21 Thread Peter Todd
On Mon, May 20, 2013 at 08:54:25PM -0700, Gregory Maxwell wrote: One point that was only recently exposed to me is that replacement combined with child-pays-for-parent creates a new kind of double spend _defense_: If someone double spends a payment to an online key of yours, you can instantly

Re: [Bitcoin-development] Double Spend Notification

2013-05-21 Thread David Vorick
I've been wondering why a blockchain is necessary at all. Ripple doesn't have one (I haven't looked closely at their implementation but it seems reasonable to go without one). When you do blockchain based transaction confirmations, you give full authority to the miner that finds the transaction