Re: [bitcoindev] Transaction Validation Optimization

author: Pieter Wuille <bitcoin-dev@wuille.net> 2025-02-19 18:20:51 +0000
committer: bitcoindev <bitcoindev@googlegroups.com> 2025-02-19 10:47:02 -0800
commit: 831166ebb1bcfd26612c61f44126886ae8322ce4 (patch)
tree: 2f1d3fcc8101adc9581afd4807bcd9828dd5fe63
parent: e3cf9da0b16c48453ece1ddcda7ebed2460f25ef (diff)
download: pi-bitcoindev-831166ebb1bcfd26612c61f44126886ae8322ce4.tar.gz
pi-bitcoindev-831166ebb1bcfd26612c61f44126886ae8322ce4.zip
1 files changed, 173 insertions, 0 deletions
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+Date: Wed, 19 Feb 2025 18:20:51 +0000
+To: John <csdarkcounter@gmail.com>
+From: Pieter Wuille <bitcoin-dev@wuille.net>
+Cc: Bitcoin Development Mailing List <bitcoindev@googlegroups.com>
+Subject: Re: [bitcoindev] Transaction Validation Optimization
+Message-ID: <PwJsLY2Y0zpBfSnWT-O1iP-r6n7sipm-EFgK-LnnZqkPMoSUO6HJxigmt2J0CRTd8A6V4UVpA-JFCd6MaXZ0Up1bye5zVxXGdSrhIsyr38s=@wuille.net>
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+On Tuesday, February 18th, 2025 at 10:22 AM, John <csdarkcounter@gmail.com>=
+ wrote:
+
+> Hi everyone,
+>=20
+> While analyzing the codebase, I observed what seems to be duplicate valid=
+ation steps for transactions that already exist in the mempool when they ap=
+pear in new blocks. Specifically, I'm curious if the secondary validation p=
+erformed during block acceptance could be safely optimized for SegWit-verif=
+ied transactions using their wtxid hashes.=EF=BC=88I'm still working on the=
+ source code, and I'm not sure if the source code was validated twice
+
+Bitcoin Core maintains a signature validation cache and a script validation=
+ cache (see the ValidationCache class), which generally means that mempool =
+transactions don't need to be (fully) validated again when seen in a block.=
+ The script validation cache includes the validation flags (including which=
+ consensus rules are active) too, so the cache will not function across sof=
+tfork activations, for example.
+
+--=20
+Pieter
+
+--=20
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+FCd6MaXZ0Up1bye5zVxXGdSrhIsyr38s%3D%40wuille.net.
+
author	Pieter Wuille <bitcoin-dev@wuille.net>	2025-02-19 18:20:51 +0000
committer	bitcoindev <bitcoindev@googlegroups.com>	2025-02-19 10:47:02 -0800
commit	831166ebb1bcfd26612c61f44126886ae8322ce4 (patch)
tree	2f1d3fcc8101adc9581afd4807bcd9828dd5fe63
parent	e3cf9da0b16c48453ece1ddcda7ebed2460f25ef (diff)
download	pi-bitcoindev-831166ebb1bcfd26612c61f44126886ae8322ce4.tar.gz pi-bitcoindev-831166ebb1bcfd26612c61f44126886ae8322ce4.zip