📅 Original date posted:2022-03-16
📝 Original message:On Thu, Mar 10, 2022 at 8:46 PM Anthony Towns <aj at erisian.com.au> wrote:
> Note that PTLCs aren't really Chia-friendly, both because chia doesn't
> have secp256k1 operations in the first place, but also because you can't
> do a scriptless-script because the information you need to extract
> is lost when signatures are non-interactively aggregated via BLS --
> so that adds an expensive extra ECC operation rather than reusing an
> op you're already paying for (scriptless script PTLCs) or just adding
> a cheap hash operation (HTLCs).
>
The CLVM currently supports BLS12-381 group 1 point operations which it
uses to support taproot which I think is enough to support PTLCs but
obviously isn't compatible with secp. In the future there will likely be a
soft fork to include a complete set of BLS12-381 operations mostly to
support ZK implementation.
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Bram Cohen [ARCHIVE] /
npub1ld…t8ur6
2023-06-07 23:05:18
in reply to nevent1q…e8d4
Author Public Key
npub1ldcq03p2qe58u0xnlwa35wchjuhz49y6ueu5ghmtjetez9xstnvsmt8ur6Published at
2023-06-07 23:05:18Event JSON
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"content": "📅 Original date posted:2022-03-16\n📝 Original message:On Thu, Mar 10, 2022 at 8:46 PM Anthony Towns \u003caj at erisian.com.au\u003e wrote:\n\n\u003e Note that PTLCs aren't really Chia-friendly, both because chia doesn't\n\u003e have secp256k1 operations in the first place, but also because you can't\n\u003e do a scriptless-script because the information you need to extract\n\u003e is lost when signatures are non-interactively aggregated via BLS --\n\u003e so that adds an expensive extra ECC operation rather than reusing an\n\u003e op you're already paying for (scriptless script PTLCs) or just adding\n\u003e a cheap hash operation (HTLCs).\n\u003e\n\nThe CLVM currently supports BLS12-381 group 1 point operations which it\nuses to support taproot which I think is enough to support PTLCs but\nobviously isn't compatible with secp. In the future there will likely be a\nsoft fork to include a complete set of BLS12-381 operations mostly to\nsupport ZK implementation.\n-------------- next part --------------\nAn HTML attachment was scrubbed...\nURL: \u003chttp://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20220315/497a7250/attachment.html\u003e",
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