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Subject: Re: [bitcoindev] Consensus Cleanup BIP draft
From: Sjors Provoost <sjors@sprovoost.nl>
In-Reply-To: <afedbc69-8042-4fe8-99c2-279173a440f3n@googlegroups.com>
Date: Fri, 28 Mar 2025 10:23:52 +0100
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> Op 27 mrt 2025, om 21:45 heeft jeremy <jeremy.l.rubin@gmail.com> het volg=
ende geschreven:
>=20
> I'm also personally strongly against removing 64-byte transactions. It's =
a wart in how transactions work, and future upgrades (especially around tx =
programmability) might integrate very poorly with this kind of edge conditi=
on.
Do you have an example in mind where a 64-byte transaction could appear in =
such a system?
Given the limited space, in particular no room for a public key or signatur=
e, I could imagine a burn or anyone-can-spend clause. Those don't have to b=
e exactly 64 bytes. Even if 64 byte transactions are generated by accident,=
I believe they can be tweaked after the fact (though that claim could use =
more scrutiny):
https://bitcoin.stackexchange.com/q/125971/4948
If we grant that any smart contract system has to engineer around this "war=
d", we should also consider how much engineering effort is saved in other s=
mart contract systems by having simpler SPV proofs.
Imo the real ward is the originally broken Merkle tree design. That has req=
uired a bunch of engineering all over the place to compensate. Afaik it can=
only be truly fixed with a hard fork. This seems to be as good as it gets =
with a soft fork.
- Sjors
--=20
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