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From: Karl Johan Alm <karljohan-alm@garage.co.jp>
To: Luke Dashjr <luke@dashjr.org>
Cc: Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] {sign|verify}message replacement
Date: Thu, 15 Mar 2018 07:36:48 +0000	[thread overview]
Message-ID: <CALJw2w5NQ=WX1Cm4aUXMN=uxn8NLHAfYDLEtqUptce5DCWZXWA@mail.gmail.com> (raw)
In-Reply-To: <201803141236.48869.luke@dashjr.org>

On Wed, Mar 14, 2018 at 12:36 PM, Luke Dashjr <luke@dashjr.org> wrote:
> Ideally, it should support not only just "proof I receive at this address",
> but also "proof of funds" (as a separate feature) since this is a popular
> misuse of the current message signing (which doesn't actually prove funds at
> all). To do this, it needs to be capable of signing for multiple inputs.

Re-reading this, I think what you mean is it should be possible to
create a proof for (a) specific UTXO(s), hence "inputs". That sounds
pretty useful, yeah!

So you could provide a mix of addresses and inputs (as txid:vout) and
it would generate a proof that signs the message for each input
(taking scriptPubKey from address or from the UTXO data directly on
the blockchain).

-Kalle.


  reply	other threads:[~2018-03-15  7:37 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-14  8:09 [bitcoin-dev] {sign|verify}message replacement Karl Johan Alm
2018-03-14  9:46 ` Kalle Rosenbaum
2018-03-14 16:12   ` Anthony Towns
2018-03-15  3:01   ` Karl Johan Alm
2018-03-15  6:43     ` Jim Posen
2018-03-15  7:25       ` Karl Johan Alm
2018-03-15 20:53         ` Jim Posen
2018-03-14 12:36 ` Luke Dashjr
2018-03-15  7:36   ` Karl Johan Alm [this message]
2018-03-15 14:14     ` Luke Dashjr
2018-03-16  0:38       ` Karl Johan Alm
2018-03-16  1:59         ` Greg Sanders
2018-03-16  2:04           ` Karl Johan Alm
2018-03-15 10:15   ` Damian Williamson
2018-03-26  8:53 ` Pieter Wuille
2018-03-27  8:09   ` Karl Johan Alm

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