From: Greg Sanders <gsanders87@gmail•com>
To: Bitcoin Dev <bitcoin-dev@lists•linuxfoundation.org>
Subject: [bitcoin-dev] Relaxing minimum non-witness transaction size policy restriction
Date: Tue, 11 Oct 2022 08:50:07 -0400 [thread overview]
Message-ID: <CAB3F3DtNWajm669s9a=cs+Dft0PXDu1JHchzEw+yYLmRS+YSYQ@mail.gmail.com> (raw)
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Hello fellow Bitcoiners,
After looking at some fairly exotic possible transaction types, I ran into
the current policy limit requiring transactions to be 85 non-witness
serialized bytes. This was introduced as a covert fix to policy fix
for CVE-2017-12842. Later the real motivation was revealed, but the
"reasonable" constant chosen was not.
I'd like to propose relaxing this to effectively the value BlueMatt
proposed in the Great Consensus Cleanup: 65 non-witness bytes. This would
allow a single input, single output transaction with 4 bytes of OP_RETURN
padding, rather than padding out 21 bytes to get to p2wpkh size.
The alternative would be to also allow anything below 64 non-witness bytes,
but this seems fraught with footguns for a few bytes gain.
The PR is here with more relevant background and alternatives included in
the thread:
https://github.com/bitcoin/bitcoin/pull/26265
Please let us know if there's a fundamental issue with this approach, or
any other feedback.
Best,
Greg
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next reply other threads:[~2022-10-11 12:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-11 12:50 Greg Sanders [this message]
[not found] ` <PS2P216MB1089C3131115B700C840BEFB9D239@PS2P216MB1089.KORP216.PROD.OUTLOOK.COM>
2022-10-11 13:14 ` Greg Sanders
2022-10-20 23:21 ` Peter Todd
2022-10-21 0:07 ` Greg Sanders
2022-10-21 0:13 ` Peter Todd
2022-10-26 19:09 ` Greg Sanders
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