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From: Kaz Wesley <keziahw@gmail.com>
Date: Fri, 18 Jul 2014 12:51:59 -0700
Message-ID: <CA+iPb=FZS9FxP9uYWHTzLpSVJ2uaOwr4dTQSvYuJjhVYCcJOew@mail.gmail.com>
To: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Content-Type: text/plain; charset=UTF-8
Subject: Re: [Bitcoin-development] Squashing redundant tx data in blocks on
 the wire
Precedence: list

I've updated the gist, and added an additional proposal that I think
meshes well:
https://gist.github.com/kazcw/43c97d3924326beca87d#ultra-fast-block-validation

sparseblocks + UFBV would tighten the new-block process to this (when
txes have been received in advance):
- receive block (~2kB for 1000 tx)
- check whether block contains txes known to belong to conflict-sets,
and if so whether more than one tx from a single conflict-set has been
included (a few operations on very small sets)
- relay block (~2kB)

The benefits of these changes only occur when the transactions have
been seen in advance, but incentivizing ahead-of-block transaction
propogation is a plus, as Jeff mentioned; working on a block without
first ensuring peers have its transactions would be very expensive
from a miner's point of view.