From: Christian Decker <decker.christian@gmail.com>
To: ZmnSCPxj <ZmnSCPxj@protonmail.com>
In-Reply-To: <9OOOx7l1TdSQBlgt0MuRvtKzuxa_Z3g0kF315Legl5L-UOvvNZFL_tgAuWhe015Q-ZtOdYfI9iGJkAqhfb42RqazYq0JvTCzXaEr1XkD_iY=@protonmail.com>
References: <874ljsitvx.fsf@gmail.com>
	<9OOOx7l1TdSQBlgt0MuRvtKzuxa_Z3g0kF315Legl5L-UOvvNZFL_tgAuWhe015Q-ZtOdYfI9iGJkAqhfb42RqazYq0JvTCzXaEr1XkD_iY=@protonmail.com>
Date: Tue, 01 May 2018 13:38:12 +0200
Message-ID: <87sh7bhahn.fsf@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain
Cc: "bitcoin-dev@lists.linuxfoundation.org"
	<bitcoin-dev@lists.linuxfoundation.org>,
	"lightning-dev@lists.linuxfoundation.org"
	<lightning-dev@lists.linuxfoundation.org>
Subject: Re: [bitcoin-dev] [Lightning-dev] eltoo: A Simplified update
	Mechanism for Lightning and Off-Chain Contracts
Precedence: list

ZmnSCPxj <ZmnSCPxj@protonmail.com> writes:
> Good morning Christian,
>
> This is very interesting indeed!
>
> I have started skimming through the paper.
>
> I am uncertain if the below text is correct?
>
>> Throughout this paper we will use the terms *input script* to refer to `witnessProgram` and `scriptPubKey`, and *output script* to refer to the `witness` or `scriptSig`.
>
> Figure 2 contains to what looks to me like a `witnessProgram`, `scriptPubKey`, or `redeemScript` but refers to it as an "output script":
>
>>    OP_IF
>>        10 OP_CSV
>>        2 As Bs 2 OP_CHECKMULTISIGVERIFY
>>    OP_ELSE
>>        2 Au Bu 2 OP_CHECKMULTISIGVERIFY
>>    OP_ENDIF
>>
>> Figure 2: The output script used by the on-chain update transactions.
>
> Regards,
> ZmnSCPxj

Darn last minute changes! Yes, you are right, I seem to have flipped the
two definitions. I'll fix that up and push a new version.