Subject: Re: [bitcoin-dev] Globally Broadcasting Workshares to Improve Finality Heuristics

From: Newsletter Catcher <[email-masked]>
Date: Sat, 18 Dec 2021 00:36:07 -0800

It's not exactly what you're looking for but this is very similar to the
premise of Bobtail, which was presented at Scaling Bitcoin a few years ago:
https://arxiv.org/abs/1709.08750

On Fri, Dec 17, 2021, 10:54 Jeremy via bitcoin-dev <
[email-masked]> wrote:

> An interesting concept occurred to me today while chatting with Nic Carter.
>
> If we set Bitcoin Core up to gossip headers for work shares (e.g.,
> expected 500 headers per block would have 20kb overhead, assuming we don't
> need to send the prev hash) we'd be able to have more accurate finality
> estimates and warnings if we see hashrate abandoning our chain tip. This is
> observable regardless of if dishonest miners choose not to publish their
> work on non tip shares, since you can notice the missing work.
>
> In the GUI, we could give users an additional warning if they are
> accepting a payment during a sudden hashrate decrease that they might wait
> longer.
>
> Has this been discussed before?
>
> Cheers,
>
> Jeremy
>
> --
> @JeremyRubin <https://twitter.com/JeremyRubin>
> <https://twitter.com/JeremyRubin>
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