Re: [Bitcoin-development] Multisign payment protocol?

[Jeff Garzik <jgarzik@bitpay.com>]

Payment protocol currently supports payments to multi-sig addresses.

In general, almost all wallet software sucks RE multisig.  Just try
any of these actions in Bitcoin-Qt or another wallet:
* obtain a public key you control, given a bitcoin address
* easily share public keys
* easily share partially signed transactions
* build a P2SH multisig address from public keys, reliably.  Right
now, participants have no idea about pubkey order, leading various N
possible P2SH addresses, given a list of public keys.  Reproducing the
P2SH address is harder than it should be.
* track "partially controlled" balance (balance of coins of which you
may sign at least 1 of N)
* support for remote oracles and services that provide 1-of-N signatures
etc.




On Mon, Mar 10, 2014 at 1:39 PM, Drak <drak@zikula.org> wrote:
> I was wondering if there would be merit in a kind of BIP for a payment
> protocol using multisig?
>
> Currently, setting up a multisig is quite a feat. Users have to exchange
> public keys, work out how to get the public keys from their addresses. If
> one of the parties are not savvy enough, an malicious party could easily be
> setup that was 2 of 3 instead of 2 of 2 where the malicious party generates
> the multisig address+script and thus be able to run off with funds anyway.
>
> It's also terribly complex to generate and keep track of. There's been a
> nice attempt at creating an browser interface at coinb.in/multisig but it
> still lacks the kind of ease with created by the payment protocol. If there
> was a BIP then it would go a long way to aiding future usability of multisig
> wallet implementations.
>
> What are your thoughts?
>
> Drak
>
> ------------------------------------------------------------------------------
> Learn Graph Databases - Download FREE O'Reilly Book
> "Graph Databases" is the definitive new guide to graph databases and their
> applications. Written by three acclaimed leaders in the field,
> this first edition is now available. Download your free book today!
> http://p.sf.net/sfu/13534_NeoTech
> _______________________________________________
> Bitcoin-development mailing list
> Bitcoin-development@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bitcoin-development
>



-- 
Jeff Garzik
Bitcoin core developer and open source evangelist
BitPay, Inc.      https://bitpay.com/