From: "'stutxo' via Bitcoin Development Mailing List" <bitcoindev@googlegroups.com>
To: Bitcoin Development Mailing List <bitcoindev@googlegroups.com>
Subject: [bitcoindev] Re: TRUC and P2A for CTV fee management
Date: Mon, 30 Dec 2024 16:57:15 -0800 (PST) [thread overview]
Message-ID: <3642acab-e6c2-4c6b-b786-fa41a84cd51en@googlegroups.com> (raw)
In-Reply-To: <fff33085-ca24-4553-9fa8-de8d60e8a9bfn@googlegroups.com>
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thanks floppy disk guy,
i updated this example with the correct way a single 1c1p spend with no p2a
would look like
parent
https://mempool.space/signet/tx/7a3768737ae4e20a556de6f475bfc74a13a8fda2287dbabbf6ffe8d7f5500de2
child
https://mempool.space/signet/tx/3135e52ad30eb788d455549f4f09b55f887cdd2eb1660180b0e12f10af807cf5
Although im not sure how useful this one is, i guess its nice because you
can still get the parent transaction in to the mempool even with 0 fees
I also added an example of v3 transactions and p2a to my ctv payment pool
PoC here https://github.com/stutxo/op_ctv_payment_pool
On Saturday, December 21, 2024 at 4:42:08 AM UTC /dev /fd0 wrote:
> Hi stu,
>
> Thanks for testing packages and P2A with CHECKTEMPLATEVERIFY on signet.
>
> This example in the README looks incorrect:
>
> > ### Bumping Fee by Deducting Fee from CTV Output
> > For some reason if you still wanted to pay the fee with just the ctv
> ouput you could take it from the output value
> > - [bump fee without extra input or child transaction: Parent Transaction
> on Mempool Space](
> https://mempool.space/signet/tx/86896275fb71d4e3b84d1edeeacb90f7c4ccf77ee3a29e66d7effff4bb0682fb
> )
>
> /dev/fd0
> flopppy disk guy
>
> On Wednesday, December 18, 2024 at 5:57:19 AM UTC+5:30 stutxo wrote:
>
>> Hi everyone,
>>
>> I am trying to learn more about op_ctv (or its true name,
>> op_securethebag). One thing I keep hearing is that estimating fees are
>> potentially an issue when spending CTV transactions.
>>
>> jamesob mentioned fees in his simple_ctv_valut
>> <https://github.com/jamesob/simple-ctv-vault>
>>
>> *Because coins may remain vaulted for long periods of time, the unvault
>> process is sensitive to changes in the fee market. Because use of OP_CTV
>> requires precommiting to a tree of all possible specific outputs and the
>> number of inputs, we cannot use RBF to dynamically adjust feerate of
>> unvaulting transactions.*
>> and rustyrussell on nostr also mentioned fees being a problem
>> <https://primal.net/e/note1ulw6tr8hrqz092wy02fcyshn3fgt309kc5w95mhl7j0shj7c9zxsu8a2mw>
>>
>> *Optimised sponsors for solving the "but how do I add fees" problem in a
>> way that doesn't drive miner centralisation.*
>>
>> With v3 transactions available in bitcoin 28.0
>> <https://bitcoinops.org/en/bitcoin-core-28-wallet-integration-guide/>there
>> are a bunch of new techniques that have been enabled that we can use to
>> hopefully solve these issues
>>
>> As long as you have an output for 240 sats paying to a P2A address, such
>> as tb1pfees9rn5nz on signet, you or anyone else will be able to bump the
>> fees using CPFP on the anchor output.
>>
>> I have some examples of these transactions here on signet
>>
>> CTV spend transaction with zero fees:
>>
>> https://mempool.space/signet/tx/32f4f4e6165e7f8df9b9a762e11a6ca7f16087713e0e3e42352021e6bf3800e3
>>
>> P2A CPFP transaction:
>>
>> https://mempool.space/signet/tx/9a3582f03b0ac39cff8ed024cf8f38e4fc4a1ee2ff216badf041bf4572c0d03b
>>
>> Code used is here:
>> https://github.com/stutxo/simple_ctv
>>
>> Is there anything I am missing here? What are the downsides of this
>> method? Is this how most ctv scripts spends would work?
>>
>> Thanks!
>> stu
>>
>
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prev parent reply other threads:[~2024-12-31 1:05 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-18 0:25 [bitcoindev] " 'stutxo' via Bitcoin Development Mailing List
2024-12-21 3:07 ` [bitcoindev] " /dev /fd0
2024-12-31 0:57 ` 'stutxo' via Bitcoin Development Mailing List [this message]
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