From: "Russell O'Connor" <roconnor@blockstream•com>
To: Jeremy Rubin <j@rubin•io>
Cc: Bitcoin Protocol Discussion <bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] TXHASH + CHECKSIGFROMSTACKVERIFY in lieu of CTV and ANYPREVOUT
Date: Sat, 29 Jan 2022 12:14:43 -0500 [thread overview]
Message-ID: <CAMZUoKki0M6jvgdtQLETa2fjYJkCqwWaj1k1WSSa=e8DJ8tPxA@mail.gmail.com> (raw)
In-Reply-To: <CAD5xwhjHv2EGYb33p2MRS=VSz=ciGwAsiafX1yRHjxQEXfykSA@mail.gmail.com>
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The hash would normally also cover the hash flags in use, and would be
different in those two cases.
But yes, it seems at the last minute I did include a suggestion to disable
covering the flag themselves in the hash and appear to have accidentally
allowed for recursive covenants (a common occurrence when designing
opcodes).
On Sat, Jan 29, 2022 at 12:01 PM Jeremy Rubin <j@rubin•io> wrote:
>
>
>
>> Perhaps there is some misunderstanding. TXHASH + CSFSV doesn't allow for
>> complex or recursive covenants. Typically CAT is needed, at minimum, to
>> create those sorts of things. TXHASH still amounts to deploying a
>> non-recursive covenant construction.
>>
>>
> This seems false to me.
>
> <Only hash a single input scriptpubkey> txhash <only hash a single output
> scriptpubkey> txhash equalverify
>
> Is that not a recursive covenant? With a little extra work you can also
> control for amounts and stuff.
>
>
>
>>
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next prev parent reply other threads:[~2022-01-29 17:14 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-26 17:20 Russell O'Connor
2022-01-26 22:16 ` Jeremy
2022-01-27 4:20 ` James Lu
2022-01-27 19:16 ` Russell O'Connor
2022-01-28 0:18 ` James O'Beirne
2022-01-28 13:14 ` Michael Folkson
2022-01-28 14:17 ` Anthony Towns
2022-01-28 16:38 ` Jeremy
2022-01-28 14:13 ` Russell O'Connor
2022-01-28 15:14 ` James O'Beirne
2022-01-29 15:43 ` Russell O'Connor
2022-01-29 17:02 ` Jeremy Rubin
[not found] ` <CAD5xwhjHv2EGYb33p2MRS=VSz=ciGwAsiafX1yRHjxQEXfykSA@mail.gmail.com>
2022-01-29 17:14 ` Russell O'Connor [this message]
2022-01-31 2:18 ` Anthony Towns
2022-01-28 1:34 ` Anthony Towns
2022-01-28 13:56 ` Russell O'Connor
2022-02-01 1:16 ` Anthony Towns
2022-02-08 2:16 ` Russell O'Connor
2022-02-17 14:27 ` Anthony Towns
2022-02-17 14:50 ` Russell O'Connor
2022-02-08 3:40 ` Rusty Russell
2022-02-08 4:34 ` Jeremy Rubin
2022-02-11 0:55 ` [bitcoin-dev] Recursive covenant opposition, or the absence thereof, was " David A. Harding
2022-02-11 3:42 ` Jeremy Rubin
2022-02-11 17:42 ` James O'Beirne
2022-02-11 18:12 ` digital vagabond
2022-02-12 10:54 ` darosior
2022-02-12 15:59 ` Billy Tetrud
2022-02-17 15:15 ` Anthony Towns
2022-02-18 7:34 ` ZmnSCPxj
2022-02-23 11:28 ` ZmnSCPxj
2022-02-23 18:14 ` Paul Sztorc
2022-02-24 2:20 ` ZmnSCPxj
2022-02-24 6:53 ` Anthony Towns
2022-02-24 12:03 ` ZmnSCPxj
2022-02-26 5:38 ` Billy Tetrud
2022-02-26 6:43 ` ZmnSCPxj
2022-02-27 0:58 ` Paul Sztorc
2022-02-27 2:00 ` ZmnSCPxj
2022-02-27 7:25 ` ZmnSCPxj
2022-02-27 16:59 ` Billy Tetrud
2022-02-27 23:50 ` Paul Sztorc
2022-02-28 0:20 ` Paul Sztorc
2022-02-28 6:49 ` ZmnSCPxj
2022-02-28 7:55 ` vjudeu
2022-03-04 8:42 ` ZmnSCPxj
2022-03-04 13:43 ` vjudeu
2022-02-28 22:54 ` Paul Sztorc
2022-03-01 5:39 ` Billy Tetrud
2022-03-02 0:00 ` Paul Sztorc
2022-03-04 12:35 ` Billy Tetrud
2022-03-04 20:06 ` Paul Sztorc
2022-02-26 6:00 ` Anthony Towns
2022-02-15 8:45 ` [bitcoin-dev] " Rusty Russell
2022-02-15 18:57 ` Jeremy Rubin
2022-02-15 19:12 ` Russell O'Connor
2022-02-16 2:26 ` Rusty Russell
2022-02-16 4:10 ` Russell O'Connor
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