Re: [bitcoin-dev] Rebroadcast mechanism in Bitcoin P2P network

From: damian@willtech•com.au
To: Prayank <prayank@tutanota•de>,
	Bitcoin Protocol Discussion
	<bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] Rebroadcast mechanism in Bitcoin P2P network
Date: Fri, 10 Dec 2021 19:49:55 -0800	[thread overview]
Message-ID: <1fbf0ef8b1b42979361b5df0b09c2dcd@willtech.com.au> (raw)
In-Reply-To: <MqZttWy--3-2@tutanota.de>

Good Afternoon,

Thank-you for your good work cataloguing and writing about the 
contributions to Bitcoin.

It is that the solution to privacy is to use privacy-enhancing network 
communications, such as TOR. I am not against a mechanism to rebroadcast 
transactions more robustly if the mempool of adjoining nodes has 
forgotten about them, but the truth is, all transactions originate from 
some node, and there are methods that allow an individual node to be 
identified as the likely source of a transaction unless privacy-enabled 
networks are utilised. Having a different method to cause rebroadcast 
does not obfuscate the origin.

KING JAMES HRMH
Great British Empire

Regards,
The Australian
LORD HIS EXCELLENCY JAMES HRMH (& HMRH)
of Hougun Manor & Glencoe & British Empire
MR. Damian A. James Williamson
Wills

et al.

Willtech
www.willtech.com.au
www.go-overt.com
duigco.org DUIGCO API
and other projects

m. 0487135719
f. +61261470192

This email does not constitute a general advice. Please disregard this 
email if misdelivered.
On 2021-12-10 07:13, Prayank via bitcoin-dev wrote:
> Hello World,
> 
> I had started working on this blog dedicated to Hal Finney in August:
> https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2021-August/019367.html
> 
> I have been able to track more than 10 Issues and Pull Requests from
> different Bitcoin projects that are focused on privacy. Wrote 3 blog
> posts and will write more often as I learn new things. There is a
> section called 'Hall of Fame' and 7 developers are listed in hof who
> worked on one or more pull requests that helped improve privacy in
> Bitcoin projects: Andrew Chow, chimp1984, jmacxx, Luke Dashjr, Samuel
> Dobson, Vasil Dimov and wpaulino.
> 
> Last post is about 'Rebroadcast mechanism' used in Bitcoin full node
> implementations:
> https://prayank23.github.io/camouflage//blog/rebroadcast/
> 
> Problem: Rebroadcast mechanism used in Bitcoin Core and Knots,
> rebroadcasts only our transactions. This helps spy nodes to link
> bitcoin addresses with IP addresses and also know that wallets are
> enabled for a node.
> 
> Solution by Amiti Uttarwar: New rebroadcast mechanism in which
> transactions are re-broadcasted based on fee rate and mempool age.
> 
> I have shared other details, my opinion and links to comments by Suhas
> Daftuar in the blog post since related pull request has been in draft
> mode for some time now.
> 
> --
> 
> Prayank
> 
> A3B1 E430 2298 178F
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