Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id EBB1328FC for ; Mon, 18 Mar 2019 04:23:01 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mail-40130.protonmail.ch (mail-40130.protonmail.ch [185.70.40.130]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id DF1E3D3 for ; Mon, 18 Mar 2019 04:23:00 +0000 (UTC) Date: Mon, 18 Mar 2019 04:22:52 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=default; t=1552882979; bh=HS9/Si0PJn40Eujuup3OvMjn5U/baXDG1XE0hiCeu5A=; h=Date:To:From:Cc:Reply-To:Subject:In-Reply-To:References: Feedback-ID:From; b=ncKP2U0LzD1qaA/emFh4itEg03I5FAARVOgaVlNH5eQOUhqP9jNklY5vkde1KFjR2 0mtuSqahFigDRRWAmIR1ZiH/iZXZ13SVbgNL3eeIVlM6Z9WuL672GJrKOl+Xc3hdlh anJlbjxpacgji7vN18uwRG4CJNwgk1rSSZd0DzuM= To: Alistair Mann From: ZmnSCPxj Reply-To: ZmnSCPxj Message-ID: <9cdqgzZg7-d1XIJvomJKugN8JoluRs-ExKjP2bAybjhEhBxAkkPDQwH0JkWi0sZYFCXClIstKC5gTXBarXspCldSBWVGkOt_ff-DPDEdEW0=@protonmail.com> In-Reply-To: <119468467.Oh7zB5fVM7@dprfs-d5766> References: <12139028.TiJ4v5RR02@dprfs-d5766> <119468467.Oh7zB5fVM7@dprfs-d5766> Feedback-ID: el4j0RWPRERue64lIQeq9Y2FP-mdB86tFqjmrJyEPR9VAtMovPEo9tvgA0CrTsSHJeeyPXqnoAu6DN-R04uJUg==:Ext:ProtonMail MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-1.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, FROM_LOCAL_NOVOWEL, RCVD_IN_DNSWL_LOW, URI_NOVOWEL autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org X-Mailman-Approved-At: Mon, 18 Mar 2019 17:04:52 +0000 Cc: Bitcoin Protocol Discussion Subject: Re: [bitcoin-dev] Pre BIP: Solving for spam and other abuse with an HTLB X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Mar 2019 04:23:02 -0000 Funding Transaction Pattern is how I name it; I am unaware if this pattern = has been named before. I know gmax created Taproot precisely as an optimization of this pattern, s= o I presume he is aware of it, and might know a proper name for such. It is massively ambiguous to call it "gmax technique" as that name could ap= ply to many, many techniques. Regards, ZmnSCPxj Sent with ProtonMail Secure Email. =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90 Original Me= ssage =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90 On Monday, March 18, 2019 12:11 AM, Alistair Mann wrote: > Many thanks for your thoughts, ZmnSCPxj. > > > I believe there is indeed an important usecase for HTLB over HTLC, whic= h is > > to improve the anonymity set. An HTLB over HTLC would be indistinguisha= ble > > onchain from other uses of HTLC; assuming that HTLCs have other uses, t= his > > is a (small?) plus to privacy. > > Note that the redundant would have to be given by Alice to Bob= , > > since using a standardized one will also reveal use of HTLB over HTLC > > instead of hiding it among other HTLC UTXOs. > > Both these are good observations and I'll act on them. > > > Another thing to improve privacy would be to apply the Funding Transact= ion > > pattern: https://zmnscpxj.github.io/offchain/generalized.html > > > > I've not read of the FTP before; I welcome it, and take on board that it > improves privacy by keeping a script offline. My first thought is that do= esn't > affect the suggested BIP, so my next update here won't include it. I reco= gnise > it would improve mainnet use of scripts though, so do expect to return to= it. > > Cheers, > > -------------------------------------------------------------------------= ---------------------------------------------------------------------------= ---------------------------------------------------------------------------= ---------------------------------------------------------------------------= ---------------------- > > Alistair Mann