[bitcoin-dev] BIP 158 Flexibility and Filter Size

Karl-Johan Alm karljohan-alm at garage.co.jp
Tue Jun 5 04:33:06 UTC 2018

On Tue, Jun 5, 2018 at 10:08 AM, Jim Posen <jim.posen at gmail.com> wrote:
> It also derives all bandwidth gains from address reuse. So I'm
> hesitant to make the complexity tradeoff for bandwidth savings due to a
> behavior that is actively discouraged.

I don't understand this comment. The bandwidth gains are not from
address reuse, they are from the observed property that false
positives are independent between two filters. I.e. clients that
connect once a day will probably download 2-3 filters at most, if they
had nothing relevant in the last ~144 blocks.


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