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

From: Peter Todd <[email-masked]>
Date: Mon, 11 Jan 2016 06:57:42 +0000

On 10 January 2016 22:57:15 GMT-05:00, Rusty
>Cheers,
>Rusty.
>[1] Weirdly, the bitcoin network is doing this much work every 57
>    days, for about $92M.  If that's all the attack costs, it's under
>    1M in 10 years.

Don't get too caught up in Moore's law here - more likely the attack will become feasible because SHA2 is partially weakened, as happened with SHA1. Having industry standard safety margins would make such a weakening be an academic problem rather than an emergency.