On 01/23/2015 11:05 AM, Gregory Maxwell wrote: > On Fri, Jan 23, 2015 at 3:24 PM, Alan Reiner <etothe...@gmail.com> wrote: >> Unfortunately, it seems that there was no soft-fork way to achieve this >> benefit, at least not one that had favorable properties. Most of the >> soft-fork variations of it required the coins being spent to have been >> originated in a special way. In other words, it would only work if the >> coins had entered the wallet with some special, modified TxOut script. So >> it wouldn't work with existing coins, and would require senders to update >> their software to reshape the way they send transactions to be compatible >> with our goals. > I think this is unreasonable. There is a straight-forward soft-fork > approach which is safe (e.g. no risk of invalidating existing > transactions). Yes, it means that you need to use newly created > addresses to get coins that use the new signature type... but thats > only the case for people who want the new capability. This is > massively preferable to expecting _every_ _other_ user of the system > (including miners, full nodes, etc.) to replace their software with an > incompatible new version just to accommodate your transactions, for > which they may care nothing about and which would otherwise not have > any urgent need to change. > >
As far as I'm concerned, anything that requires the coins to originate in the wallet with some special form is a non-starter. The new SIGHASH type allows you to sign transactions with *any* coins already in your wallet, and imposes no requirements on anyone paying your cold wallet to be compatible with your signer. Any proposals that require coin origination features means that 100% of people paying you need to "be nice" and send you coins with this special structure. You can't spend old coins that were sent before this proposal was implemented, and if anyone sends you coins without respecting the new structure, then your signing devices need the full-complexity routines to accommodate, which defeats the entire purpose. I am happy to entertain other ideas that achieve our goals here, but I'm fairly confident that the new SIGHASH type is the only way that would allow devices like Trezor to truly simplify their design (and still work securely on 100% of funds contained by the wallet). ------------------------------------------------------------------------------ New Year. New Location. New Benefits. New Data Center in Ashburn, VA. GigeNET is offering a free month of service with a new server in Ashburn. Choose from 2 high performing configs, both with 100TB of bandwidth. Higher redundancy.Lower latency.Increased capacity.Completely compliant. http://p.sf.net/sfu/gigenet _______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development
