From: Peter Todd <pete@petertodd•org>
To: Johnson Lau <jl2012@xbt•hk>
Cc: bitcoin-dev <bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] Making UTXO Set Growth Irrelevant With Low-Latency Delayed TXO Commitments
Date: Sun, 22 May 2016 04:55:33 -0400 [thread overview]
Message-ID: <20160522085533.GA10746@fedora-21-dvm> (raw)
In-Reply-To: <68A4772D-D423-45F9-ADB7-95BEB3E66F43@xbt.hk>
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On Fri, May 20, 2016 at 11:46:32AM +0200, Johnson Lau wrote:
> How is this compared to my earlier proposal: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2015-December/011952.html <https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2015-December/011952.html> ?
>
> In my proposal, only the (pruned) UTXO set, and 32 bytes per archived block, are required for mining. But it is probably more difficult for people to spend an archived output. They need to know the status of other archived outputs from the same block. A full re-scan of the blockchain may be needed to generate the proof but this could be done by a third party archival node.
We're working along the same lines, but my proposal is much better fleshed out;
I think you'll find you missed a few details if you flesh out yours in more
detail. For instance, since your dormant UTXO list is indexed by UTXO
expiration order, it's not possible to do any kind of verification that the
contents of that commitment are correct without the global state of all UTXO
data - you have no ability to locally verify as nothing commits to the contents
of the UTXO set.
--
https://petertodd.org 'peter'[:-1]@petertodd.org
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prev parent reply other threads:[~2016-05-22 8:55 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-17 13:23 Peter Todd
2016-05-17 14:03 ` Jameson Lopp
2016-05-17 14:25 ` Eric Lombrozo
2016-05-17 18:01 ` Chris Priest
[not found] ` <CABm2gDoj=6CimHm2C0H_qa=o5SRqWr0ZTGamf-qT-kUjt5WXTA@mail.gmail.com>
[not found] ` <CABm2gDqMQanaY0Eo4QAnx2MrKCSP+v31R6J80jSVx+jOwsVsVw@mail.gmail.com>
2016-05-18 11:14 ` Jorge Timón
2016-05-18 23:53 ` Peter Todd
[not found] ` <CABm2gDrXjg_nSKr-ju0jdXxmMc4N=LQFRwaVU3ix1p-T8CVKdQ@mail.gmail.com>
[not found] ` <CABm2gDrmRf9wjddiMb-TTDE0xkBJ6yMz-bW_aTpDuBvNqrnHzQ@mail.gmail.com>
[not found] ` <CABm2gDqfZh0zOqJN5itVk8eP0nshBsydzT6uryrBdRTcYqyhyA@mail.gmail.com>
[not found] ` <CABm2gDr4ZKvGt3qRPpV+iPgGbpQ5cO66M_bPn2HJPn-eYcQMOg@mail.gmail.com>
[not found] ` <CABm2gDrijEMZW1dMjGTfG-32VGvLZvX-ujP1n5mxBeVLQSsL1Q@mail.gmail.com>
[not found] ` <CABm2gDp9N3ZEZcmF28ESv3V7v_HqU5e5KHY69cSxcVm0t7BeDQ@mail.gmail.com>
2016-05-19 9:31 ` Jorge Timón
2016-05-19 22:23 ` Nick ODell
2016-05-20 8:45 ` Peter Todd
2016-05-20 9:46 ` Johnson Lau
2016-05-22 8:55 ` Peter Todd [this message]
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