From: Justus Ranvier <justus@openbitcoinprivacyproject•org>
To: bitcoin-dev@lists•linuxfoundation.org
Subject: Re: [bitcoin-dev] Hash of UTXO set as consensus-critical
Date: Fri, 18 Sep 2015 21:30:13 -0500 [thread overview]
Message-ID: <55FCC8B5.9070906@openbitcoinprivacyproject.org> (raw)
In-Reply-To: <A16FDC0B-877F-47F1-A631-77F46251BB07@gmail.com>
[-- Attachment #1.1: Type: text/plain, Size: 1230 bytes --]
On 18/09/15 15:17, Rune Kjær Svendsen via bitcoin-dev wrote:
> Bitcoin does not function if the majority of mining power is dishonest. There is no way around that. It’s how proof-of-work functions.
None of those statements are true.
If a majority of Bitcoin miners are mining invalid blocks, then they
aren't Bitcoin miners any more and are no longer relevant to the Bitcoin
consensus.
There does exist a problem that light clients aren't always able to tell
the difference between chains that are valid and chains that are not
valid, but it's is possible to create simple proofs that would do so:
https://gist.github.com/justusranvier/451616fa4697b5f25f60
If those changes would be implemented, then any node that knew a chain
was invalid could produce a compact proof that anyone else in the
network could verify, regardless of how much proof of work was used to
create the invalid chain.
Committed UTXO sets would need safe to rely upon if a similar set of
proofs that a particular set was invalid existed.
--
Justus Ranvier
Open Bitcoin Privacy Project
http://www.openbitcoinprivacyproject.org/
justus@openbitcoinprivacyproject•org
E7AD 8215 8497 3673 6D9E 61C4 2A5F DA70 EAD9 E623
[-- Attachment #1.2: 0xEAD9E623.asc --]
[-- Type: application/pgp-keys, Size: 18729 bytes --]
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 801 bytes --]
next prev parent reply other threads:[~2015-09-19 2:30 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-18 19:05 Rune Kjær Svendsen
2015-09-18 19:43 ` Patrick Strateman
2015-09-18 20:07 ` Alex Morcos
2015-09-18 20:11 ` Matt Corallo
2015-09-18 20:17 ` Rune Kjær Svendsen
2015-09-18 20:37 ` Jorge Timón
2015-09-18 20:38 ` Jorge Timón
2015-09-18 22:22 ` Vincent Truong
2015-09-19 2:30 ` Justus Ranvier [this message]
2015-09-19 15:45 ` Rune Kjær Svendsen
2015-09-19 17:19 ` Justus Ranvier
2015-09-19 20:11 ` Rune K. Svendsen
2015-09-20 0:48 ` Dave Scotese
2015-09-21 17:15 ` Justus Ranvier
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=55FCC8B5.9070906@openbitcoinprivacyproject.org \
--to=justus@openbitcoinprivacyproject$(echo .)org \
--cc=bitcoin-dev@lists$(echo .)linuxfoundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox