A BIP for partially-signed/not-signed raw transaction serialization; would it be useful?

A BIP for partially-signed/not-signed raw transaction serialization; would it be useful?
2017-01-09 22:15 ` Chris Priest
       [not found] ` <E04F385E-3B2F-445E-936C-F293BBC4CADA@thomaskerin.io>
  
From: 木ノ下じょな @ 2017-01-09  9:36 UTC (permalink / raw)
  To: bitcoin-dev

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I have been seeing issues like the following many times on all the
different projects that support multisig with users responsible for partial
transaction transport.

https://github.com/OutCast3k/coinbin/issues/73

I would like to gather opinions before proposing a BIP, (like whether we
need one or not) so please let me know what you think.

Basically, Electrum, Copay, Coinb.in, Bitcoin Core, etc. all have different
methodology for serializing partially signed multisig raw transactions, as
well as not-signed raw transactions regardless of scriptPubkey.

I think we should all be on the same page when serializing not-signed and
partially signed transactions so that the person could look at the data
alone and know what is necessary and how to manipulate it to sign and
complete the transaction.

- Jon

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 permalink raw reply	[|nested]
2017-01-09  9:36 [bitcoin-dev] A BIP for partially-signed/not-signed raw transaction serialization; would it be useful? 木ノ下じょな

       [not found] ` <E04F385E-3B2F-445E-936C-F293BBC4CADA@thomaskerin.io>
  
From: Chris Priest @ 2017-01-09 22:15 UTC (permalink / raw)
  To: 木ノ下じょな,
	Bitcoin Protocol Discussion

I approve of this idea. Counterparty has the same problem. Their API
returns a unsigned transaction that is formed differently from how
other unsigned transactions, which causes friction. Someone needs to
write up a specification that is standardized so that all unsigned
transactions are of the same form. Basically the signature section of
the should contains all the information required to make the
signature, and it needs to be encoded in a way that the signing
application (a blockchain library like BitcoinJ or BitcoinJS) can tell
that it is unsigned.

On 1/9/17, 木ノ下じょな via bitcoin-dev <bitcoin-dev@lists•linuxfoundation.org> wrote:
> I have been seeing issues like the following many times on all the
> different projects that support multisig with users responsible for partial
> transaction transport.
>
> https://github.com/OutCast3k/coinbin/issues/73
>
> I would like to gather opinions before proposing a BIP, (like whether we
> need one or not) so please let me know what you think.
>
> Basically, Electrum, Copay, Coinb.in, Bitcoin Core, etc. all have different
> methodology for serializing partially signed multisig raw transactions, as
> well as not-signed raw transactions regardless of scriptPubkey.
>
> I think we should all be on the same page when serializing not-signed and
> partially signed transactions so that the person could look at the data
> alone and know what is necessary and how to manipulate it to sign and
> complete the transaction.
>
> - Jon
>
> --
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>


 permalink raw reply	[|nested]
[not found] ` <E04F385E-3B2F-445E-936C-F293BBC4CADA@thomaskerin.io>

  
From: 木ノ下じょな @ 2017-01-10 12:35 UTC ( / )
  To: Thomas Kerin, Bitcoin Protocol Discussion



Hey Thomas,

Just to clear the air, I am not OutCast3k, but I have submitted various PRs
to coinb.in under multiple handle names, and also Copay and Electrum. (You
could say I have multisig in my blood if you want to be cheesy)

I think I'm going to go ahead and draft up a BIP and submit it here just to
get the ball rolling.

Any ideas or input can be sent to me directly via email. I'll also start a
Telegram group chat https://t.me/joinchat/AAAAAAutbBADJuHRD7YvHw in case
anyone wants to join in on the discussion.

Thanks,
Jon

2017-01-10 18:18 GMT+09:00 Thomas Kerin <me@thomaskerin•io>:

> Hey,
>
> Firstly, your project coinb.in is really cool, I've used it a bit back in
> the day :-)
>
> It makes sense why you're looking for this proposal. I'm pretty sure on
> top of a serialisation of an unsigned tx with the scriptpubkey (it is to
> deliver signing data to the wallet too?) then you'll also want a protocol
> to request signatures.
>
> I worked on this problem before, when I was using your site and a tool of
> mine to carry out transactions. I would up writing a BIP that's basically
> the same (in message contents, not format) as Jonas's hardware signing BIP.
>
> I think he also realised that it's not just for hardware wallets, it's
> also perfect for a BitGo wallet to use to talk to a GreenAddress wallet. It
> seems to cover the web case nicely.
>
> (My app was one where users could supply an xpub for multisigs to the
> server, get txs, and do signing offline or in the browser)
>
> Maybe have a look over it and see if it starts to capture some of the
> things you would want!
>
> All the best,
> Thomas
>
>
>
> On 9 January 2017 10:36:49 CET, "木ノ下じょな via bitcoin-dev" <
> bitcoin-dev@lists•linuxfoundation.org> wrote:
>>
>> I have been seeing issues like the following many times on all the
>> different projects that support multisig with users responsible for partial
>> transaction transport.
>>
>> https://github.com/OutCast3k/coinbin/issues/73
>>
>> I would like to gather opinions before proposing a BIP, (like whether we
>> need one or not) so please let me know what you think.
>>
>> Basically, Electrum, Copay, Coinb.in, Bitcoin Core, etc. all have
>> different methodology for serializing partially signed multisig raw
>> transactions, as well as not-signed raw transactions regardless of
>> scriptPubkey.
>>
>> I think we should all be on the same page when serializing not-signed and
>> partially signed transactions so that the person could look at the data
>> alone and know what is necessary and how to manipulate it to sign and
>> complete the transaction.
>>
>> - Jon
>>
>> --
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>
> --
> Sent from my Android device with K-9 Mail. Please excuse my brevity.
>



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