On Friday, November 6, 2020 11:49 AM, Mike Schmidt via bitcoin-dev
<[email protected]> wrote:
> Well I sure picked a bad couple weeks to volunteer to send a bunch of Bitcoin
> test transactions...
>
> While I tested less than I would have liked, there are some notable results:
I think these results really show there is no reason to try to maintain the
old-software-can-send-to-future-segwit-versions property, given that more than
one not just didn't support it, but actually sent coins into a black hole.
Thus, I agree with Rusty that we should change the checksum for v1+
unconditionally. That also means that old senders are protected from the
insertion issue (by failing, as we can guarantee that new-checksum addresses,
even after a few errors, are invalid to old software).
I've sent another mail in this thread with details, but the TL;DR is that we
should use the constant M=0x2bc830a3 rather than 0x3fffffff as previous
suggested. More information on
https://gist.github.com/sipa/14c248c288c3880a3b191f978a34508e.
Absent objections, I'll write up a BIP soon.
Cheers,
--
Pieter
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