Re: [Bitcoin-development] Double spending and replace by fee

2015-04-09 Thread Adrian Macneil
Fwiw, Coinbase relies on the current first-seen mempool behaviour. Wide adoption of RBF (without a suitable replacement available) would make it extremely difficult to pitch bitcoin as a viable alternative to credit cards payments to large merchants. Adrian On Mar 28, 2015, at 7:22 AM, Peter

Re: [Bitcoin-development] Request For Discussion / BIP number - Multi-Currency Hierarchy For Use In Multisignature Deterministic Wallets

2015-04-09 Thread Kefkius
William, I've amended the proposal's Motivation section slightly for clarification. I'm not sure how a cosigner_index branch would benefit this proposal. Granted, I don't fully understand the benefits of the cosigner_index branch in BIP-0045. From what I understand, the wallet branch of my

Re: [Bitcoin-development] Build your own nHashType

2015-04-09 Thread Stephen Morse
Hi Mike, Hi Stephen, It's an interesting idea. I'm not sure that all the combinations make sense. Excluding the connected output script or value but still signing the prev tx hash appears pointless: the script cannot change anyway, and you still need to know what it is to actually calculate

[Bitcoin-development] Some interviews from Amsterdam 2014

2015-04-09 Thread Michael Wechner
Greetings I did four interviews at the bitcoin conference Amsterdam 2014 with - Gavin Andresen - Peter Surda - Patrick Byrne - Stefan Thomas which I have finally published at https://www.youtube.com/user/WYONAPICTURES Hope you like them :-) Thanks Michael

[Bitcoin-development] DevCore London

2015-04-09 Thread Mike Hearn
Next week on April 15th Gavin, Wladimir, Corey and myself will be at DevCore London: https://everyeventgives.com/event/devcore-london If you're in town why not come along? It's often the case that conferences can be just talking shops, without much meat for real developers. So in the

Re: [Bitcoin-development] Build your own nHashType

2015-04-09 Thread Mike Hearn
I don't think it's quite a blank check, but it would enable replay attacks in the form of sending the money to the same place it was sent before if an address ever receives coins again. Right, good point. I wonder if this sort of auto forwarding could even be a useful feature. I can't think

Re: [Bitcoin-development] Build your own nHashType

2015-04-09 Thread Peter Todd
On Thu, Apr 09, 2015 at 07:22:52AM -0700, Jeff Garzik wrote: On Thu, Apr 9, 2015 at 7:10 AM, Stephen Morse stephencalebmo...@gmail.com wrote: Is hashing transaction data once for each input really a huge bottleneck, though? Do mobile devices have an issue with this? Think about what

Re: [Bitcoin-development] Build your own nHashType

2015-04-09 Thread Jeff Garzik
On Thu, Apr 9, 2015 at 7:10 AM, Stephen Morse stephencalebmo...@gmail.com wrote: Is hashing transaction data once for each input really a huge bottleneck, though? Do mobile devices have an issue with this? Think about what slow transaction verification speed means. Slower propagation across