From: Bram Cohen <bram@bittorrent•com>
To: Peter Todd <pete@petertodd•org>
Cc: Bitcoin Protocol Discussion <bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] A Better MMR Definition
Date: Thu, 23 Feb 2017 19:32:43 -0800 [thread overview]
Message-ID: <CA+KqGkrfhg3GnbWwvKXHQ2NWuCnfzYyTPUxRhzYMuDBiNQR4eA@mail.gmail.com> (raw)
In-Reply-To: <20170224031531.GA32118@savin.petertodd.org>
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On Thu, Feb 23, 2017 at 7:15 PM, Peter Todd <pete@petertodd•org> wrote:
>
> Glad we're on the same page with regard to what's possible in TXO
> commitments.
>
> Secondly, am I correct in saying your UTXO commitments scheme requires
> random
> access? While you describe it as a "merkle set", obviously to be merkelized
> it'll have to have an ordering of some kind. What do you propose that
> ordering
> to be?
>
The ordering is by the bits in the hash. Technically it's a Patricia Trie.
I'm using 'merkle tree' to refer to basically anything with a hash root.
> Maybe more specifically, what exact values do you propose to be in the set?
>
>
That is unspecified in the implementation, it just takes a 256 bit value
which is presumably a hash of something. The intention is to nail down a
simple format and demonstrate good performance and leave those semantics to
a higher layer. The simplest thing would be to hash together the txid and
output number.
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next prev parent reply other threads:[~2017-02-24 3:32 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-23 1:15 Peter Todd
2017-02-23 3:07 ` Bram Cohen
2017-02-23 7:41 ` Peter Todd
2017-02-23 17:53 ` Chris Priest
2017-02-23 18:19 ` Peter Todd
2017-02-23 18:28 ` G. Andrew Stone
2017-02-23 18:31 ` Peter Todd
2017-02-23 23:13 ` Bram Cohen
2017-02-23 23:51 ` Peter Todd
2017-02-24 0:49 ` Bram Cohen
2017-02-24 1:09 ` Peter Todd
2017-02-24 2:50 ` Bram Cohen
2017-02-24 2:58 ` Peter Todd
2017-02-24 3:02 ` Bram Cohen
2017-02-24 3:15 ` Peter Todd
2017-02-24 3:32 ` Bram Cohen [this message]
2017-02-24 4:36 ` Peter Todd
2017-02-24 22:20 ` Bram Cohen
2017-02-25 4:12 ` Peter Todd
2017-02-25 6:23 ` Bram Cohen
2017-02-28 16:43 ` G. Andrew Stone
2017-02-28 23:10 ` Bram Cohen
2017-02-28 23:24 ` Pieter Wuille
2017-03-01 1:47 ` Bram Cohen
2017-03-01 1:56 ` Peter Todd
2017-03-01 22:31 ` Peter Todd
2017-03-31 20:38 ` Bram Cohen
2017-04-01 10:18 ` praxeology_guy
2017-04-01 19:46 ` praxeology_guy
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