From: Praveen Baratam <praveen.baratam@gmail•com>
To: Daniel Robinson <danrobinson010@gmail•com>
Cc: Bitcoin Protocol Discussion <bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] Multi CSV Transaction
Date: Wed, 21 Feb 2018 08:06:31 +0530 [thread overview]
Message-ID: <CAAQs3wvitCFZ41CD52N7r+AQA6G7MSPUtHhCCWN-3ZzQ8kxo0w@mail.gmail.com> (raw)
In-Reply-To: <CAD438Hvb2k4iCwJ91x5j+tgx-d_eLdBKvLWZfea87HPdKeYgAA@mail.gmail.com>
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Thank you Daniel!
Your detailed explanation did clear things up :-)
ᐧ
On Wed, Feb 21, 2018 at 6:29 AM, Daniel Robinson <danrobinson010@gmail•com>
wrote:
> Yes, although it's a functionality of Bitcoin Script generally, not OP_CSV
> in particular. Bitcoin Script allows you to use nested IF statements, and
> enforce whatever different conditions you want in each branch.
>
> Here's your contract in Ivy <https://ivy-lang.org/bitcoin/>:
>
> contract MultiCSV(
> bob: PublicKey,
> carol: PublicKey,
> bobDelay: Duration,
> carolDelay: Duration,
> val: Value
> ) {
> clause bobSpend(sig: Signature) {
> verify checkSig(bob, sig)
> verify older(bobDelay)
> unlock val
> }
> clause carolSpend(sig: Signature) {
> verify checkSig(carol, sig)
> verify older(carolDelay)
> unlock val
> }
> clause bothSpend(bobSig: Signature, carolSig: Signature) {
> verify checkMultiSig([bob, carol], [bobSig, carolSig])
> unlock val
> }
> }
>
> It compiles to the following Bitcoin Script:
>
> PUSH(carolKey) PUSH(bobKey) 2 PICK 2 EQUAL IF ROT DROP 0 4 ROLL 4 ROLL 2
> 2ROT 2 CHECKMULTISIG ELSE ROT IF DROP CHECKSIGVERIFY PUSH(carolDelay)
> CHECKSEQUENCEVERIFY DROP 1 ELSE NIP CHECKSIGVERIFY PUSH(bobDelay)
> CHECKSEQUENCEVERIFY DROP 1 ENDIF ENDIF
>
> On Tue, Feb 20, 2018 at 5:32 PM Praveen Baratam via bitcoin-dev <
> bitcoin-dev@lists•linuxfoundation.org> wrote:
>
>> Hello Everybody,
>>
>> I need a little clarity about how OP_CHECKSEQUENCEVERIFY (CSV) works in
>> transactions.
>>
>> Can I use multiple CSV end points as depicted in the figure below? I
>> basically want to allow different conditions at different delays.
>>
>> [image: Multi CSV.png]
>>
>> I just want to know if OP_CHECKSEQUENCEVERIFY can be used to achieve the
>> above.
>>
>> Thank you.
>>
>> Praveen
>> ᐧ
>> _______________________________________________
>> bitcoin-dev mailing list
>> bitcoin-dev@lists•linuxfoundation.org
>> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev
>>
>
--
Dr. Praveen Baratam
about.me <http://about.me/praveen.baratam>
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prev parent reply other threads:[~2018-02-21 2:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-20 16:53 Praveen Baratam
2018-02-21 0:59 ` Daniel Robinson
2018-02-21 2:36 ` Praveen Baratam [this message]
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