From: "'Aiden McClelland' via Bitcoin Development Mailing List" <bitcoindev@googlegroups.com>
To: bitcoindev@googlegroups.com, jeremy <jeremy.l.rubin@gmail•com>,
Bitcoin Development Mailing List <bitcoindev@googlegroups.com>
Subject: Re: [bitcoindev] [BIP Proposal] Mempool Validation and Relay Policies via User-Defined Scripts
Date: Tue, 30 Sep 2025 16:44:41 -0600 [thread overview]
Message-ID: <1A33D206-444A-49E7-B1F1-E9FE5F4E32FB@drbonez.dev> (raw)
In-Reply-To: <8c6bb024-437f-4122-8ae0-f8ed9b9c23e4n@googlegroups.com>
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Jeremy,
That's actually really clever. I had wanted the scripts to be able to manage mempool size, and handle prioritization of higher feerate transactions (hence the evict() fn and minFeerate part of the api), which I don't think could be done with script, and I'm not sure we'd want to add opcodes to make that possible, given that it only makes sense in this context. But maybe that part doesn't need to be part of the dynamic scripts? Definitely gives me a lot to think about.
Thanks,
Aiden McClelland
On September 30, 2025 3:09:15 PM MDT, jeremy <jeremy.l.rubin@gmail•com> wrote:
>Bitcoin already has a built in user defined script language: Bitcoin Script.
>
>If you add a couple conditionally verified opcodes (the same ones necessary
>for covenants), you could write whatever filter you like, and we'd learn
>more about what the best opcodes are for writing covenants.
>
>You would execute the script "pretending" to be input 0.
>
>We would then at least learn something about covenants.
>On Tuesday, September 30, 2025 at 2:22:10 AM UTC-4 Aiden McClelland wrote:
>
>> /dev/fd0,
>>
>> I appreciate the comments. A txnotify solution could work, although it
>> loses a lot of the modularity and sandboxing of what I'm proposing. It
>> would probably result in a single external binary, running all of the
>> policy validation logic, rather than a bundle of scripts you can mix and
>> match. And it might encourage solutions that involve fetching relay
>> policies over the internet, which is probably not ideal. Ideally, updating
>> policy should require user action.
>>
>> Thanks,
>> Aiden McClelland
>>
>>
>>
>> On September 27, 2025 7:22:28 PM MDT, /dev /fd0 <alice...@gmail•com>
>> wrote:
>>
>>> Hi Aiden,
>>>
>>> There is an easy solution based on my understanding of [transaction
>>> validation][0] although I have not tested it:
>>>
>>> 1. Add a config option `txnotify` similar to `blocknotify` that executes
>>> commands or script when a new transaction is received from a peer.
>>> 2. Add a function `ExecuteTxNotify()` that will run the script provided
>>> by the user in step 1. Script should either return 'accept' for 'reject'
>>> and function would return true/false accordingly.
>>> 3. Call `ExecuteTxNotify()` in ` AcceptToMemoryPool()` so that rejected
>>> transactions do not enter the mempool.
>>>
>>> [0]: https://bitcoincore.academy/transaction-validation.html
>>>
>>> /dev/fd0
>>> floppy disk guy
>>>
>>> On Thu, Sep 25, 2025 at 12:00 AM Aiden McClelland <m...@drbonez•dev>
>>> wrote:
>>>
>>>> Hi all,
>>>>
>>>> I'd like to share for discussion a draft BIP to allow for a modular
>>>> mempool/relay policy: https://github.com/bitcoin/bips/pull/1985
>>>>
>>>> I think it could potentially reduce conflict within the community around
>>>> relay policy, as an alternative to running lots of different node
>>>> implementations/forks when there are disagreements.
>>>>
>>>> I am working on a reference implementation using Bellard's QuickJS, but
>>>> it has been almost a decade since I've written C++, so it's slow going and
>>>> I'm sure doesn't follow best-practices. Once it's working, it can be
>>>> cleaned up.
>>>>
>>>> Thanks,
>>>> Aiden McClelland
>>>>
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>>>> https://groups.google.com/d/msgid/bitcoindev/cbdab6fa-93bc-44c9-80f0-6c68c6554f56n%40googlegroups.com
>>>> <https://groups.google.com/d/msgid/bitcoindev/cbdab6fa-93bc-44c9-80f0-6c68c6554f56n%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>> .
>>>>
>>>
>
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prev parent reply other threads:[~2025-09-30 23:02 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-24 18:18 Aiden McClelland
2025-09-24 18:46 ` Greg Maxwell
2025-09-24 18:54 ` Aiden McClelland
2025-09-24 22:49 ` Greg Maxwell
2025-09-25 9:21 ` yes_please
2025-09-25 20:03 ` Greg Maxwell
2025-09-25 20:51 ` Aiden McClelland
2025-09-25 21:14 ` Greg Maxwell
2025-09-25 21:25 ` Aiden McClelland
2025-09-25 21:51 ` Greg Maxwell
2025-09-26 2:06 ` Chris Riley
2025-09-26 2:17 ` Aiden McClelland
2025-09-26 2:28 ` Chris Riley
2025-09-25 17:52 ` Chris Guida
2025-09-25 20:46 ` Greg Maxwell
2025-09-25 21:02 ` Chris Guida
2025-09-25 23:33 ` Andrew Poelstra
2025-09-26 7:58 ` Garlo Nicon
2025-09-27 14:44 ` 'OJ' via Bitcoin Development Mailing List
2025-09-27 16:49 ` Bryan Bishop
2025-09-24 19:16 ` Chris Guida
2025-09-24 20:01 ` Greg Maxwell
2025-09-25 2:20 ` bigshiny
2025-09-25 14:33 ` Luke Dashjr
2025-09-28 1:22 ` /dev /fd0
2025-09-30 4:21 ` 'Aiden McClelland' via Bitcoin Development Mailing List
2025-09-30 21:09 ` jeremy
2025-09-30 22:44 ` 'Aiden McClelland' via Bitcoin Development Mailing List [this message]
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