Return-Path: Received: from smtp3.osuosl.org (smtp3.osuosl.org [IPv6:2605:bc80:3010::136]) by lists.linuxfoundation.org (Postfix) with ESMTP id BAF46C000B for ; Tue, 1 Mar 2022 22:50:38 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id A9B7060D87 for ; Tue, 1 Mar 2022 22:50:38 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org X-Spam-Flag: NO X-Spam-Score: -1.348 X-Spam-Level: X-Spam-Status: No, score=-1.348 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URI_NOVOWEL=0.5] autolearn=ham autolearn_force=no Authentication-Results: smtp3.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cevJwMbf4rMu for ; Tue, 1 Mar 2022 22:50:37 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.8.0 Received: from mail-lj1-x231.google.com (mail-lj1-x231.google.com [IPv6:2a00:1450:4864:20::231]) by smtp3.osuosl.org (Postfix) with ESMTPS id 41E2760B1E for ; Tue, 1 Mar 2022 22:50:37 +0000 (UTC) Received: by mail-lj1-x231.google.com with SMTP id v22so23883171ljh.7 for ; Tue, 01 Mar 2022 14:50:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=kWumypV/TfsL680LVl/KlNRRmm+uGl0IlWZVw5DNyls=; b=Q8I/CHLk379Or/dI29JQw0Ws5iJTAALBdPuc5NEzsvVx9F0keozm1PbxK0NlJpxCIo ytvYIEfGduIu+gn1cwspFV03Dr/3R4O/KTTJMBfyH/DIglPfLQXx40gYALNAfr0oKNSx WQp72xj2v/pc8JT5/9R9ZSwAW/BUCwwDj285Mt5cONmQpcSqDyxj79RvA5AJa5mUGid4 Mjn/VPArYm1WBqqHld0Lf0iSyYAA8RA4fIyn9ZhHkye6TEaamDjJEeNBinxwWI/YX7Mo 7AKnKzUoxza9kKZ/YhQOUHYePnYVpiIy0+Qm2vjSuLJ7QAgbErkMidA+CdrvgPE78c0F k4Dg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=kWumypV/TfsL680LVl/KlNRRmm+uGl0IlWZVw5DNyls=; b=mNkpH3c7cLX572oIzP4n0BfBejui8FhOPFWaMsuq/b3c6ELGkQaOg4XWrXFXSpNX6H D15yYYVPoxLsgSDVIzaZnJLRg/Ij9XzIKdyIxbNFF+8vNfylW8AEY9XbtdPr8s3qAycM lQvExa6Kb4yEQoEaNuV0hTLXbzUKEHxvGUkn4tKlpxVm5tC5VqlRQ9YHXQE0SCbTJrJk b0M72nDF7mJcKsF0NdZ8yyvoy53Zk8ouTGGZVKgMAFUWwpLQODiKG0lxisBpZbSgrDVT mnYnoNjwpTmM9AxQJ9OnMbwSTafJjRR9UVQQ/PTi83tjSw7qkAmsO6Zlx3PeZ++zcvlu QTNw== X-Gm-Message-State: AOAM530VaKTlYefkx/DQBfLUT80yEtVdN9JcxV7imDQbqGoODSQd/qW/ 4fi4npAdFJz/Ny9WnbYfygKy58TYV26/yTIGooZnIf2tVlE= X-Google-Smtp-Source: ABdhPJwR3rG0nKSwAWl4hJzkGGzHRAiPKLCj88RgsiFtZiqKdMR4LbTkkOWW09aZPFUZkszHRl4UUefTAhunYoHwxSg= X-Received: by 2002:a2e:a270:0:b0:245:f51f:354 with SMTP id k16-20020a2ea270000000b00245f51f0354mr19625867ljm.497.1646175035077; Tue, 01 Mar 2022 14:50:35 -0800 (PST) MIME-Version: 1.0 References: <4eb70284-cfef-b795-5745-735de349fae5@towardsliberty.com> In-Reply-To: <4eb70284-cfef-b795-5745-735de349fae5@towardsliberty.com> From: nopara73 Date: Tue, 1 Mar 2022 23:50:24 +0100 Message-ID: To: Max Hillebrand , Bitcoin Protocol Discussion Content-Type: multipart/alternative; boundary="0000000000003439cd05d92ffe28" X-Mailman-Approved-At: Tue, 01 Mar 2022 23:43:38 +0000 Subject: Re: [bitcoin-dev] Wasabi Wallet 2.0 Testnet Release X-BeenThere: bitcoin-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Bitcoin Protocol Discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Mar 2022 22:50:38 -0000 --0000000000003439cd05d92ffe28 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable The first Wasabi Wallet 2.0 testnet coinjoin with real users: https://blockstream.info/testnet/tx/68849dc71e6eb860b4b8aa3f57b9bc8178a002b= 54f85a46305bfaaad28b40444 On Tue, Mar 1, 2022 at 11:27 PM Max Hillebrand via bitcoin-dev < bitcoin-dev@lists.linuxfoundation.org> wrote: > Hello list, > > tl;dr: we have been working on a little something, and Wasabi 2.0 is now > ready for your review and feedback. > > Wasabi Wallet 2.0 is a Bitcoin wallet providing effortless privacy for > its users. Just like Wasabi 1.0, this is achieved by default on the > network layer with a deep Tor integration, and on the synchronization > layer with BIP158 block filters or the packaged Bitcoin full node. > However, 2.0 upgrades the privacy on the blockchain layer with a new > Wabisabi coinjoin implementation, running by default in the background. > > Wabisabi is a drop-in replacement for the ZeroLink coinjoin coordination > protocol. Instead of Chaumian [or Schnorr] blind signatures, it uses > keyed verified anonymous credentials and Pedersen commitments. This > enables anonymous DoS protection for centrally coordinated coinjoins > without relying on equal amount outputs. This flexibility in the > coordination enables a more sophisticated amount decomposition, > specifically with standard denominations of low Hamming weight, in our > case powers of two, powers of three, and the preferred value series [1, > 2, 5]. In our simulations, this results often in "changeless" coinjoins > [all outputs at least two anonymity set, aka count of equal value > outputs] for transactions with more than 50 inputs. Whereas in Wasabi > 1.0 each user had to participate in the smallest standard denomination > of 0.1 btc, now there is no mandatory output decomposition, and the > minimum amount is 5000 sats. This is **substantial** block space > savings, reducing the amount of mining fees paid, and the time until the > user's utxo set is private. > > Thanks to these efficiency improvements, we are now comformaking > coinjoin transactions the default in Wasabi's UX. As soon as bitcoin is > received in the wallet, the client will register the confirmed coin as > input for the PSBT with the backend coordinator. Within a couple hours, > the user has numerous utxos which can be spent privately without > revealing their pre-mix transaction history. The resulting UX is simple: > receive, wait, spend. Privately. Effortless. For everyone. > > Whenever the user wants to spend bitcoin to an address, the wallet > automatically selects those private coins with sufficient sats, coin > control is displayed to the user. However, when the private balance is > insufficient to make the payment, the user has the option to adjust the > coin selection with the help of the previously provided contact labels. > Since labeling is mandatory in Wasabi, we can abstract away the utxo > concept and display only the contact labels for the users to choose > from. Wasabi also suggests the user to slightly adjust the payment > amount so as to avoid the creation of a change utxo, decreasing fees and > improving future privacy. > > Today, we are proud to finally reveal our work in progress in a public > preview release with coinjoin on testnet. We kindly ask for your help > testing the completely new UI/UX, reviewing the cryptography and > coordination protocol, and especially coinjoining to analyze the > resulting transaction graph in the wild. > > Thank you to all contributors past and present! > > Skol > Max Hillebrand > > Download the testnet release: > https://github.com/zkSNACKs/WalletWasabi/releases/tag/v1.98.0.0 > > Website: https://wasabiwallet.io > Onion: > http://wasabiukrxmkdgve5kynjztuovbg43uxcbcxn6y2okcrsg7gb6jdmbad.onion > Testnet coordinator: > http://testwnp3fugjln6vh5vpj7mvq3lkqqwjj3c2aafyu7laxz42kgwh2rad.onion > > > _______________________________________________ > bitcoin-dev mailing list > bitcoin-dev@lists.linuxfoundation.org > https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev > --=20 Best, =C3=81d=C3=A1m --0000000000003439cd05d92ffe28 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
The first Wasabi Wallet 2.0 testnet coinjoin with real = users:=C2=A0https://blockstream.info/testnet/tx/68= 849dc71e6eb860b4b8aa3f57b9bc8178a002b54f85a46305bfaaad28b40444

On Tu= e, Mar 1, 2022 at 11:27 PM Max Hillebrand via bitcoin-dev <bitcoin-dev@lists.linuxfoundati= on.org> wrote:
Hello list,

tl;dr: we have been working on a little something, and Wasabi 2.0 is now ready for your review and feedback.

Wasabi Wallet 2.0 is a Bitcoin wallet providing effortless privacy for
its users. Just like Wasabi 1.0, this is achieved by default on the
network layer with a deep Tor integration, and on the synchronization
layer with BIP158 block filters or the packaged Bitcoin full node.
However, 2.0 upgrades the privacy on the blockchain layer with a new
Wabisabi coinjoin implementation, running by default in the background.

Wabisabi is a drop-in replacement for the ZeroLink coinjoin coordination protocol. Instead of Chaumian [or Schnorr] blind signatures, it uses
keyed verified anonymous credentials and Pedersen commitments. This
enables anonymous DoS protection for centrally coordinated coinjoins
without relying on equal amount outputs. This flexibility in the
coordination enables a more sophisticated amount decomposition,
specifically with standard denominations of low Hamming weight, in our
case powers of two, powers of three, and the preferred value series [1, 2, 5]. In our simulations, this results often in "changeless" coi= njoins
[all outputs at least two anonymity set, aka count of equal value
outputs] for transactions with more than 50 inputs. Whereas in Wasabi
1.0 each user had to participate in the smallest standard denomination
of 0.1 btc, now there is no mandatory output decomposition, and the
minimum amount is 5000 sats. This is **substantial** block space
savings, reducing the amount of mining fees paid, and the time until the user's utxo set is private.

Thanks to these efficiency improvements, we are now comformaking
coinjoin transactions the default in Wasabi's UX. As soon as bitcoin is=
received in the wallet, the client will register the confirmed coin as
input for the PSBT with the backend coordinator. Within a couple hours, the user has numerous utxos which can be spent privately without
revealing their pre-mix transaction history. The resulting UX is simple: receive, wait, spend. Privately. Effortless. For everyone.

Whenever the user wants to spend bitcoin to an address, the wallet
automatically selects those private coins with sufficient sats, coin
control is displayed to the user. However, when the private balance is
insufficient to make the payment, the user has the option to adjust the coin selection with the help of the previously provided contact labels. Since labeling is mandatory in Wasabi, we can abstract away the utxo
concept and display only the contact labels for the users to choose
from. Wasabi also suggests the user to slightly adjust the payment
amount so as to avoid the creation of a change utxo, decreasing fees and improving future privacy.

Today, we are proud to finally reveal our work in progress in a public
preview release with coinjoin on testnet. We kindly ask for your help
testing the completely new UI/UX, reviewing the cryptography and
coordination protocol, and especially coinjoining to analyze the
resulting transaction graph in the wild.

Thank you to all contributors past and present!

Skol
Max Hillebrand

Download the testnet release:
https://github.com/zkSNACKs/WalletWas= abi/releases/tag/v1.98.0.0

Website: https://wasabiwallet.io
Onion: http://wasabiukrxmkdgve5= kynjztuovbg43uxcbcxn6y2okcrsg7gb6jdmbad.onion
Testnet coordinator:
http://testwnp3fugjln6vh5vpj7mv= q3lkqqwjj3c2aafyu7laxz42kgwh2rad.onion


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bitcoin-dev mailing list
= bitcoin-dev@lists.linuxfoundation.org
https://lists.linuxfoundation.org/mail= man/listinfo/bitcoin-dev


--
Best,
=C3=81d= =C3=A1m
--0000000000003439cd05d92ffe28--