Date: Tue, 20 Aug 2019 08:14:13 +0000
To: David Vorick <david.vorick@gmail.com>,
	Bitcoin Protocol Discussion <bitcoin-dev@lists.linuxfoundation.org>
From: ZmnSCPxj <ZmnSCPxj@protonmail.com>
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Cc: Pieter Wuille <pieter.wuille@gmail.com>
Subject: Re: [bitcoin-dev] Miniscript
Precedence: list

Good morning David,

> Today, new Bitcoin applications such as JoinMarket, Wasabi wallet, and Ar=
wen all
> suffer from a problem of having novel bitcoin scripts.

For CoinJoin (JoinMarket, Wasabi) at least, I believe there is no need of n=
ovel Bitcoin SCRIPTs.
Indeed, from what I can tell they use only P2WPKH `SIGHASH_ALL` signatures =
and P2WPKH outputs: there seems to be nothing to analyze there.

I do not believe Miniscript would benefit those in particular.
(though miniscript does have other benefits as well: in particular sufficie=
ntly-advanced miniscript compilers will be able to write shorter SCRIPTs th=
an mere unaided humans can)

I have not investigated much of Arwen yet but it seems to me to be a sort o=
f exchange-specific payment-channel implementation.

Regards,
ZmnSCPxj