Russell O'Connor [ARCHIVE] on Nostr: 📅 Original date posted:2021-07-04 📝 Original message:On Sun, Jul 4, 2021 at ...

📅 Original date posted:2021-07-04
📝 Original message:On Sun, Jul 4, 2021 at 9:02 PM Russell O'Connor <roconnor at blockstream.com>
wrote:

> Bear in mind that when people are talking about enabling covenants, we are
> talking about whether OP_CAT should be allowed or not.
>
> That said, recursive covenants, the type that are most worrying, seems to
> require some kind of OP_TWEAK operation, and I haven't yet seen any
> evidence that this can be simulated with CHECKSIG(FROMSTACK). So maybe we
> should leave such worries for the OP_TWEAK operation.
>

Upon further thought, you can probably make recursive covenants even with a
fixed scritpubkey by sneaking the state into a few bits of the UTXO's
amount. Or if you try really hard, you may be able to stash your state
into a sibling output that is accessed via the txid embedded in the
prevoutpoint.
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