[bitcoin-dev] Time to worry about 80-bit collision attacks or not?

Peter Todd pete at petertodd.org
Fri Jan 8 18:41:15 UTC 2016

On Thu, Jan 07, 2016 at 08:54:00PM -0500, Gavin Andresen via bitcoin-dev wrote:
> ---
> I'm really disappointed with the "Here's the spec, take it or leave it"
> attitude. What's the point of having a BIP process if the discussion just
> comes down to "We think more is better. We don't care what you think."

I'll point out that I personally raised an issue with segpregated
witnesses quite recently - my concern that it could make validationless
mining easier and more profitable(1). Neither Pieter Wuille nor Gregory
Maxwell believed my concern to be important at first in private
communication. However, it was still discussed on IRC, with Pieter,
Greg, and others contributing valuable input on the problem and my
proposed fix. Right now I think the next step for me is to write the
code to implement my fix and submit a pull-req against the segwit

I certainly wouldn't describe that experience as "Here's the spec, take
it or leave it; We don't what what you think."

1) "Segregated witnesses and validationless mining",
    Peter Todd, Dec 23 2015, Bitcoin-dev mailing list,

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