đź“… Original date posted:2022-04-22
đź“ť Original message:Hi,
Richard Myers has an implementation of Eltoo using Bitcoin Core's functional test framework: https://github.com/remyers/bitcoin/blob/eltoo-anyprevout/test/functional/simulate_eltoo.py.
He blogged about it, too. https://yakshaver.org/2021/07/26/first.html
He seems to have something similar for covenants, but it's WIP: https://github.com/remyers/bitcoin/blob/covenant-anyprevout/test/functional/feature_apocovenant.py. https://yakshaver.org/2021/11/18/covenants.html.
His APO page looks like a good reference on the topic: https://yakshaver.org/bitcoin/#anyprevout.
------- Original Message -------
Le vendredi 22 avril 2022 Ă 1:44 PM, rot13maxi <rot13maxi at protonmail.com> a Ă©crit :
> Good morning darosior,
>
> Do you know if there is a working implementation of APO somewhere that people can use to try out some of the proposed usecases? For example, it would be great to see what eltoo would actually look like on an APO signet. Or to see some working code for a vault using covenants in an APO world.
>
> I haven’t seen much in the way of APO implementations recently, but I also haven’t gone looking, so would appreciate any links!
>
> Thanks
>
> On Fri, Apr 22, 2022 at 7:11 AM, darosior via bitcoin-dev <bitcoin-dev at lists.linuxfoundation.org> wrote:
>
>> I would like to know people's sentiment about doing (a very slightly tweaked version of) BIP118 in place of
>> (or before doing) BIP119.
>>
>> SIGHASH_ANYPREVOUT and its precedent iterations have been discussed for over 6 years. It presents proven and
>> implemented usecases, that are demanded and (please someone correct me if i'm wrong) more widely accepted than
>> CTV's.
>>
>> SIGHASH_ANYPREVOUTANYSCRIPT, if its "ANYONECANPAY" behaviour is made optional [0], can emulate CTV just fine.
>> Sure then you can't have bare or Segwit v0 CTV, and it's a bit more expensive to use. But we can consider CTV
>> an optimization of APO-AS covenants.
>>
>> CTV advocates have been presenting vaults as the flagship usecase. Although as someone who've been trying to
>> implement practical vaults for the past 2 years i doubt CTV is necessary nor sufficient for this (but still
>> useful!), using APO-AS covers it. And it's not a couple dozen more virtual bytes that are going to matter for
>> a potential vault user.
>>
>> If after some time all of us who are currently dubious about CTV's stated usecases are proven wrong by onchain
>> usage of a less efficient construction to achieve the same goal, we could roll-out CTV as an optimization. In
>> the meantime others will have been able to deploy new applications leveraging ANYPREVOUT (Eltoo, blind
>> statechains, etc..[1]).
>>
>> Given the interest in, and demand for, both simple covenants and better offchain protocols it seems to me that
>> BIP118 is a soft fork candidate that could benefit more (if not most of) Bitcoin users.
>> Actually i'd also be interested in knowing if people would oppose the APO-AS part of BIP118, since it enables
>> CTV's features, for the same reason they'd oppose BIP119.
>>
>> [0] That is, to not commit to the other inputs of the transaction (via `sha_sequences` and maybe also
>> `sha_amounts`). Cf https://github.com/bitcoin/bips/blob/master/bip-0118.mediawiki#signature-message.
>>
>> [1] https://anyprevout.xyz/ "Use Cases" section
>> _______________________________________________
>> bitcoin-dev mailing list
>> bitcoin-dev at lists.linuxfoundation.org
>> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
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darosior [ARCHIVE] /
npub1pj…x22xp
2023-06-07 23:07:57
in reply to nevent1q…jgs7
Author Public Key
npub1pj9022f74rzq7d5x7gnxje6wpsgk4r5jgeck8y5awd423ydhan3q7x22xpPublished at
2023-06-07 23:07:57Event JSON
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"content": "📅 Original date posted:2022-04-22\n📝 Original message:Hi,\n\nRichard Myers has an implementation of Eltoo using Bitcoin Core's functional test framework: https://github.com/remyers/bitcoin/blob/eltoo-anyprevout/test/functional/simulate_eltoo.py.\nHe blogged about it, too. https://yakshaver.org/2021/07/26/first.html\n\nHe seems to have something similar for covenants, but it's WIP: https://github.com/remyers/bitcoin/blob/covenant-anyprevout/test/functional/feature_apocovenant.py. https://yakshaver.org/2021/11/18/covenants.html.\n\nHis APO page looks like a good reference on the topic: https://yakshaver.org/bitcoin/#anyprevout.\n\n------- Original Message -------\nLe vendredi 22 avril 2022 à 1:44 PM, rot13maxi \u003crot13maxi at protonmail.com\u003e a écrit :\n\n\u003e Good morning darosior,\n\u003e\n\u003e Do you know if there is a working implementation of APO somewhere that people can use to try out some of the proposed usecases? For example, it would be great to see what eltoo would actually look like on an APO signet. Or to see some working code for a vault using covenants in an APO world.\n\u003e\n\u003e I haven’t seen much in the way of APO implementations recently, but I also haven’t gone looking, so would appreciate any links!\n\u003e\n\u003e Thanks\n\u003e\n\u003e On Fri, Apr 22, 2022 at 7:11 AM, darosior via bitcoin-dev \u003cbitcoin-dev at lists.linuxfoundation.org\u003e wrote:\n\u003e\n\u003e\u003e I would like to know people's sentiment about doing (a very slightly tweaked version of) BIP118 in place of\n\u003e\u003e (or before doing) BIP119.\n\u003e\u003e\n\u003e\u003e SIGHASH_ANYPREVOUT and its precedent iterations have been discussed for over 6 years. It presents proven and\n\u003e\u003e implemented usecases, that are demanded and (please someone correct me if i'm wrong) more widely accepted than\n\u003e\u003e CTV's.\n\u003e\u003e\n\u003e\u003e SIGHASH_ANYPREVOUTANYSCRIPT, if its \"ANYONECANPAY\" behaviour is made optional [0], can emulate CTV just fine.\n\u003e\u003e Sure then you can't have bare or Segwit v0 CTV, and it's a bit more expensive to use. But we can consider CTV\n\u003e\u003e an optimization of APO-AS covenants.\n\u003e\u003e\n\u003e\u003e CTV advocates have been presenting vaults as the flagship usecase. Although as someone who've been trying to\n\u003e\u003e implement practical vaults for the past 2 years i doubt CTV is necessary nor sufficient for this (but still\n\u003e\u003e useful!), using APO-AS covers it. And it's not a couple dozen more virtual bytes that are going to matter for\n\u003e\u003e a potential vault user.\n\u003e\u003e\n\u003e\u003e If after some time all of us who are currently dubious about CTV's stated usecases are proven wrong by onchain\n\u003e\u003e usage of a less efficient construction to achieve the same goal, we could roll-out CTV as an optimization. In\n\u003e\u003e the meantime others will have been able to deploy new applications leveraging ANYPREVOUT (Eltoo, blind\n\u003e\u003e statechains, etc..[1]).\n\u003e\u003e\n\u003e\u003e Given the interest in, and demand for, both simple covenants and better offchain protocols it seems to me that\n\u003e\u003e BIP118 is a soft fork candidate that could benefit more (if not most of) Bitcoin users.\n\u003e\u003e Actually i'd also be interested in knowing if people would oppose the APO-AS part of BIP118, since it enables\n\u003e\u003e CTV's features, for the same reason they'd oppose BIP119.\n\u003e\u003e\n\u003e\u003e [0] That is, to not commit to the other inputs of the transaction (via `sha_sequences` and maybe also\n\u003e\u003e `sha_amounts`). Cf https://github.com/bitcoin/bips/blob/master/bip-0118.mediawiki#signature-message.\n\u003e\u003e\n\u003e\u003e [1] https://anyprevout.xyz/ \"Use Cases\" section\n\u003e\u003e _______________________________________________\n\u003e\u003e bitcoin-dev mailing list\n\u003e\u003e bitcoin-dev at lists.linuxfoundation.org\n\u003e\u003e https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev\n-------------- next part --------------\nAn HTML attachment was scrubbed...\nURL: \u003chttp://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20220422/424bbc72/attachment.html\u003e",
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