A Fresh New Look 

In this release, Wasabi Wallet has a new look with an even darker “dark mode” highlighted by Wasabi’s signature green color. Commonly used menus and features were made more accessible by moving the coinjoin settings to the coinjoin status bar and adding a visible button in the transaction history to speed up unconfirmed transactions.

In version 2.0.7, privacy warnings were made more convenient by displaying amount differences in BTC and USD when avoiding the creation of change outputs. The wallet password required for spending and recovering funds is now called passphrase and specifies that it cannot be reset. A new sorting option was also added to reorder transactions by date.

Trezor Safe 3 Hardware Device Support

The newest Trezor hardware device with secure element protection, open-source design, and on-device confirmation is now compatible with Wasabi Wallet. Trezor is one of the most popular hardware device manufacturers for bitcoin security products. Wasabi Wallet users can now connect their Trezor Safe 3 and use it privately for cold storage.

Partial Support for Full RBF

As of this release, Wasabi Wallet clients are now detecting Full RBF replacement transactions. Also, the coordinator now replaces payments with low fee rates that double spend coinjoin inputs to defend against Denial of Service attacks. 

Privacy Improvements in Version 2.0.7

Autocoinjoin now only begins after funds are confirmed to prevent extra mining fees from being paid for coins that are already private. Tor version was bumped to 0.4.8.10 from 0.4.8.5.

About Wasabi Wallet

Reclaim your privacy with Wasabi Wallet, a free, open-source Bitcoin wallet with built-in coinjoins. Coinjoins are collaborative bitcoin transactions to enable cash-like privacy features for bitcoin. wasabiwallet.io

The post Introducing Release 2.0.7  appeared first on Wasabi Wallet - Blog.

Budapest. February 29th, 2024—Wasabi Wallet has released a new software update with its 2.0.6 version. The Juggernaut release 2.0.6 contains significant performance and privacy improvements and It adds compatibility for two popular open-source hardware devices: Blockstream Jade and BitBox02.

Safety Coinjoin & Time Preference

Sometimes users send bitcoin to their wallet for the first time, coinjoin once, and then sweep their funds in one single transaction into cold storage. While an empty hot wallet is good for security, this behavior can have potential privacy drawbacks. To accommodate this behavior, Wasabi Wallet is releasing a new ‘Safety Coinjoin’ feature which is aimed at protecting user privacy with at least two coinjoin rounds for the first Bitcoin deposit into an empty wallet. This new default feature prevents new users from making coin consolidation mistakes. 

Improvements to the coinjoin time preference setting provide better privacy and smarter fee control for users that wait for the cheapest opportunity to coinjoin.

Blockstream Jade and BitBox Hardware Devices

This new release introduces support for two popular hardware devices: Jade from Blockstream and BitBox02. These hardware integrations allow users to protect their bitcoin holdings in cold storage while using the coinjoin feature from the hot wallet on the same desktop app, bringing convenience, security and privacy to a larger group of users. 

New RPC Calls & Payments In Coinjoin

The RPC server has seen a major improvement with 11 new RPC calls available. Chief among them is payments within coinjoins, a feature not yet available on the desktop app interface. It allows users to save fees and improve privacy by sending coins directly to the final destination in a coinjoin transaction instead of performing each step separately. Other RPC calls include: fee rate for payments, anonscore & coinjoin status in get wallet info, recover wallet, speed up transaction, cancel transaction, load wallet, list wallets, exclude from coinjoin, list payments in coinjoin, cancel payment in coinjoin,start coinjoin sweep and fee overpayment protection overwrite. The RPC server can now be exposed as a Tor onion service.

Speed & Performance

The desktop app launch was significantly improved such that users can now benefit from a tighter delay when starting the wallet on their computer. This performance improvement reduces CPU usage and memory consumption by half. The overall wallet load time was slashed by at least 60%, which is due to transaction processing being much more efficient and transactions being stored in a local database instead of a single text file. Major speed benefits can be enjoyed by users of HDD computers. 

User Experience Improvements

Users can now rename their different wallets directly from the interface in the Wallet Settings. Privacy warnings and suggestions displayed while sending now use unique colors to alert users if they are making a non-private transaction. The wallet creation flow was also cleaned up to make the onboarding easier. Success screens are now closed automatically, saving users extra clicks. Discreet mode has been further expanded to hide suggested address labels at address generation. 

Further Improvements & Bug Fixes 

For businesses and users managing large wallets with lots of activity along with smaller wallets: cross-wallet performance was improved to run distinct wallets in parallel on the same computer. Users running the Wasabi executable can use the –help flag in the console to get options for which arguments to pass. The software was upgraded to Avalonia 11 bringing numerous performance benefits for the GUI. .NET 8 was also a major framework upgrade. Nix flake was configured to improve the backend deployment flow from GitHub for users looking to run their own coordinator. UI memory leaks have been fixed. The Coldcard hardware device edge firmware integration had bug fixes. The PGP key to securely report software vulnerabilities was changed. 

“This juggernaut of a release comes packed with all kinds of performance improvements. The wallet is faster to load, the UI is more responsive, and coins get more privacy for less blockspace. Safety coinjoins are introduced to protect new users from undoing their privacy progress. Thanks to the contributors for putting this one together!” – Max Hillebrand, CEO of zkSNACKs and Wasabi Wallet Contributor 

“Our mission at BitBox is to offer the easiest self custody experience possible. We are excited for this integration with Wasabi wallet, that will allow BitBox users to enhance the privacy of their coins, in a simple way” – Douglas Bakkum, CEO at BitBox

About Wasabi Wallet

Reclaim your privacy with Wasabi Wallet, a free and open source bitcoin wallet with built-in coinjoins. Coinjoins are collaborative bitcoin transactions to enable cash-like privacy features for bitcoin. wasabiwallet.io 
Media contact: [email protected]

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Tired of waiting for transaction confirmations? So are we! Much time has been spent trying to solve this ubiquitous issue. As a result, we’ve packed Wasabi Wallet v2.0.4 with highly requested features and a bundle of performance optimizations that drastically speed up wallet load time, free transactions from getting stuck in the mempool and make life easier than ever for privacy-conscious Bitcoiners. 

Key upgrades include transaction speedup with RBF and CPFP, privacy warnings when sending transactions, and a headless daemon for advanced users who prefer using their keyboard instead of their mouse. Tasks running in the background now take even less time with improvements made to coinjoin output efficiency and wallet synchronization speed.

“Since the last release four months ago, the amount of progress is mind-blowing. Now Wasabi is even faster, more private, and easier to use. The contributors have really outdone themselves this time.” ~ Max Hillebrand, CEO at zkSNACKs and Contributor to Wasabi Wallet 

Don’t Float in the Mempool

Unpredictable gaps of time between blocks often lead to users overpaying on fees for urgent transactions to avoid getting stuck in the mempool below competing bids. Wasabi’s new transaction speedup feature eliminates this risky gamble so users always win. Incoming funds can now be secured quickly with Child Pays For Parent (CPFP) to self-spend an unconfirmed UTXO, and outgoing transactions can use Replace By Fee (RBF) to increase confirmation priority or cancel the payment entirely. In addition to these flexible new features, clients now adapt to high mempool fees and never create small value coinjoin outputs that would be uneconomical to spend. Coinjoin reliability was reinforced further on the coordinator side with more accurate fee rate measurements and a robust transaction broadcasting process.

Turbosync Drastically Reduces Wallet Load Times

Wasabi clients use compact block filters to privately synchronize a wallet’s balance with the Bitcoin network. Block filters allow light clients to download only the blocks that contain their transactions instead of downloading every block like a fully validating node. This release optimizes the filter-checking process to reduce wallet loading times by 90% thanks to code cleanup and a clever key prioritization process dubbed “Turbosync”. With Turbosync, internal addresses that have already been used are not checked for coins in new blocks until after unused addresses have been checked first. Filter performance improved even more by storing them in an SQLite database instead of a plaintext file, reducing disk space requirements by about 1 GB and increasing resilience against file corruption.

Privacy Warnings and Spending Suggestions

New Privacy Warnings present users with one-click fixes if they are attempting to construct a transaction that spends nonprivate funds or creates change. Notifications are provided when consolidating more than 10 UTXOs or spending unconfirmed funds, allowing users to avoid potential mistakes without restricting intentional usage.

More Privacy, Less Blockspace

The amount decomposer was refined to make the most effective use of scarce block space so that whales who set a high anonymity score target now need fewer coinjoin rounds to reach 100% privacy. The amount of outputs a client can create in a round has been increased from 8 to 10, and decompositions that produce change outputs are now rarely chosen. The occurrence of non-private coinjoin “toxic” outputs is reduced even further to improve coinjoin efficiency. Adjustments to the anonymity score calculator and default settings additionally reduce the amount of coinjoining required before all coins are considered private. The anonymity score target of the “Maximize Privacy” coinjoin strategy setting was reduced from a random value between 50-100 to a less conservative range of 27-76, which brings the behavior closer in line with the two efficiency-based strategies.

Headless Daemon

More experienced users can directly interact with the core features of the wallet through an RPC (Remote Procedure Call) interface making it easy for developers to customize their experience and build features that are not available in the GUI version. This release bundles the Daemon, an executable called ‘wassabeed’ that runs the wallet without the graphical interface. The wallet can be run in the background by using the RPC interface allowing users to coinjoin, see their balance, and perform every other function of the wallet without the resource consumption of the graphical interface.

Other Features

• QR code scanning for Linux to copy payment addresses
• Improved Tor behavior
• Hardware Wallet Interface updated to v2.2.1
• Decoupling of the user interface for better testing and alternate client support
• Separation of WabiSabi cryptography library for compatibility with other projects
• Sunset of Wasabi Wallet 1.0 zerolink coinjoin coordination

About Wasabi Wallet

Reclaim your privacy with Wasabi Wallet, a free, open-source bitcoin wallet with built-in coinjoins. Coinjoins are collaborative bitcoin transactions that enable cash-like privacy features for bitcoin.

Download Wasabi Wallet here .

The post Free Transactions from Being Stuck in the Mempool appeared first on Wasabi Wallet - Blog.

The mission of Wasabi Wallet is to empower sovereign individuals to protect their financial privacy. This is achieved by providing a lightweight, zero knowledge desktop wallet. At the same time, it is important for any privacy tool to have the easiest UX, making it accessible to users. With WasabiGPT, Wasabi Wallet presents what may be the future of Bitcoin UX: an AI powered Bitcoin wallet, developed by Wieslaw Soltes, senior engineer at Wasabi Wallet.

With WasabiGPT, instead of searching through Docs and Settings, users can simply ask Wasabi Wallet whatever they’d like to know in natural language format and receive an answer directly in the Wasabi Wallet UI – from “What is my XPub” to “Explain Red Coin Isolation” – and even ask WasabiGPT to make entire Bitcoin transactions for them, without clicking a single button.

“As Technology advances, it is important for Bitcoin products to keep up with the times,” says Adam Ficsor, Co-Founder of zkSNACKs and lead maintainer of Wasabi Wallet. “In the future, we may be transacting value via brain implants. It is important for Bitcoin to remain at the cutting edge to explore possible privacy and security risks Bitcoin users may face.”

WasabiGPT is available to anyone in possession of ChatGPT access as a Testnet client. Due to the current state of AI systems, WasabiGPT offers zero privacy for users. All requests will be stored and processed externally after ChatGPTs Terms of Service. In the future as AI systems advance, it is thought possible to run a lightweight AI locally within the client, alleviating many of the privacy concerns facing AI today. Rather than being used for payments, WasabiGPT is used as a real-life research experiment. Its goal: to explore the possibilities of AI for Bitcoin UX and understand the privacy and security risks associated with using AI for bitcoin transactions. The future is already here, now it is on us to build on it.

The post WasabiGPT: Send Bitcoin With AI appeared first on Wasabi Wallet - Blog.

Over the years, Coin Control has evolved to become an industry standard for privacy-conscious bitcoiners. However, it’s usage in Wasabi Wallet 1.0 demonstrated that the feature often causes more harm than good. To use coin control efficiently, users must be explicitly aware of the UTXO model to avoid degrading their achieved privacy progress after conjoin.

Since the launch of Wasabi Wallet 2.0, the wallet has been powered by a smart coin selection algorithm to automatically pick the most private combination of coins to send. With Wasabi Wallet 2.0.3, users are now offered the best of both worlds: smart coin selection by default and optional insight and control for advanced users. While beginners don’t need to worry about the coin selection process through automatic calculations, advanced users retain the option to inspect and modify the features selection on their own behalf by holding the ‘Alt’ key (‘Option’ key on Mac devices) on the Preview Transaction screen.

“The goal of Wasabi 2.0 has always been to remove complexity and friction from the default user experience. That’s the only way we can gather a large user base and offer substantial privacy. However, we can make the default even easier, if we have an optional place to put the complexity, where skilled users can fine-tune their wallet’s performance to their heart’s desire”, Max Hillebrand, CEO at zkSNACKs, and Contributor to Wasabi Wallet

The 2.0.3 release also includes an upgrade to Tor 0.4.7.12, offering improved stability for MacOS M1 users and of course, there are also many other minor bug fixes.

“If we want privacy to become the default for Bitcoin transactions, we must do everything we can to reduce the fee costs falling on users for using privacy preserving technology.” – Max Hillebrand, CEO at zkSNACKs and Wasabi Wallet contributor

About Wasabi Wallet

Reclaim your privacy with Wasabi Wallet, a free, open-source bitcoin wallet with built-in coinjoins. Coinjoins are collaborative bitcoin transactions that enable cash-like privacy features for bitcoin.

The post Coin Control is Back on Wasabi Wallet appeared first on Wasabi Wallet - Blog.

This release enhances coinjoin experience for whales, optimizes UI and includes bug fixes for increased coinjoin reliability.

After the previous release of Wasabi optimized Tor connectivity, new records have been set in monthly coinjoin rounds’ completed and total coinjoin volume. Now, Wasabi Wallet Version 2.0.2.1 is available to continue leading the charge.

In the past, large bitcoin holders have had a sub-optimal experience coinjoining funds. This release alleviates coinjoin pains of bitcoin whales by improving several factors hindering optimal user experience. In previous Wasabi Wallet versions, the largest amount per input a user could register to coinjoin was 1,374.38953472 BTC. Now, even bigger whales can coinjoin with amounts supported up to 43,000 BTC per input. There will only ever be 21 million Bitcoins and only 14 addresses own more than 43,000 BTC.

For large amount coinjoins, multiple inputs were often consolidated in the same output, while the output as a whole inherited the lowest anonymity score of the inputs used to create it. Whales may have experienced their larger inputs that had already accumulated high anonymity scores getting consolidated with inputs that had lower anonymity scores, forfeiting part of the privacy progress that had already been achieved. Now, progress goes one direction instead of two steps forward and one step back: automatic coin selection won’t combine high anon score coins with lower ones going forward. This saves fees and blockspace.

“Blockspace efficiency is one of our highest priorities, we always want to avoid wasting the sats of our users. This release saves whales a large amount of mining fees.” ~ Max Hillebrand, Wasabi Contributor and CEO at zkSNACKs

Improvements & Bug Fixes

Tor version 0.4.7.11 is included along for the ride, with major fixes aimed at helping defend against network denial of service. The coordinator will now pay the transaction fee for the bytes used in transaction creation overhead.

2.0.2.1 also includes a number of bug fixes aimed at increasing coinjoin reliability. Creating a coinjoin transaction is a team effort, so even if your client is behaving normally, a bug in one of the other participant’s clients can interrupt your efforts as well. This can lead to a frustrating experience where users have to wait longer than necessary for the coordinator to find other peers who are both online and cooperative. These frustrations are alleviated with the coffee for sleeping computers and input inclusion fixes.

Coinjoins require interactivity with other users with several rounds of communication needed to select inputs and claim outputs. Idle Mac users would sometimes find their machines falling asleep halfway through communication, interrupting the round and requiring the other participants to restart the coinjoin signing process. This would cause the Mac user to be “banned” for a short time period, requiring them to wait before attempting to coinjoin again.  Macs will now stay awake to finish what they started, improving the stability of coinjoin rounds.

Another bug affecting the completion rate of coinjoin rounds was the wallet permitting users to double spend inputs that are simultaneously pending confirmation in a coinjoin transaction.  Users can no longer manually select these UTXOs to spend, further increasing the reliability of coinjoins for other participants. For this purpose auto coin selection was improved as well, fixing a bug that used more inputs than necessary when building a transaction.

The auto download new version feature (already available in previous release) now comes with additional signature verification. Before downloading and installing the latest version, Wasabi verifies the API source by downloading a unique Wasabi ECDSA signature which is then verified by the in-code-provided public key. Then, upon success, it continues to download the installer and it compares the file’s hash with the provided SHA256SUM hashes, created and provided on GitHub upon a new release. Note that this feature is only available on Windows and macOS.

Last but not least, a number of improvements to the UI makes finding and using wallet features flow more smoothly. Details of a transaction can be quickly displayed by double clicking on it in the history list. A unique icon is now displayed for clusters of 2 + coinjoins in transaction history. Interfaces were rearranged and redesigned so that resizing the application to the minimum resolution no longer causes overlapping text or scroll bars. Other small fixes include automatically closing unnecessary windows after users update their settings, aligning unevenly spaced labels and calming down some flashing text.

The post Wasabi Wallet 2.0.2.1 appeared first on Wasabi Wallet - Blog.

It is, unfortunately, no surprise to anyone that the privacy network Tor has been under Distributed Denial of Service attack for the last few months, and as a result, has been suffering from severe latency and reliability issues in routing traffic. Many bitcoin projects, including Wasabi Wallet, depend on Tor as a mission-critical infrastructure to protect the privacy of their users. In light of the attack, this resulted in infrequent coinjoins for Wasabi Wallet users. As a countermeasure to address this reliability issue, the Wasabi client switched from connecting with the backend onion server to using Tor exit nodes and routing traffic to the clearnet domain of the coinjoin coordinator.

All traffic is still anonymized to prevent the client from leaking its IP address to the coinjoin coordinator server and protect user privacy. After performing testing and scenario analysis, the Wasabi contributors realized it would vastly improve the reliability and frequency of coinjoin rounds, preventing inputs from being blocked by the coordinator. Inputs are usually blocked if they repeatedly fail to sign the coinjoin transaction, to protect against DDoS attacks on the coordinator itself. Users downloading the latest release should now expect much more reliable and frequent coinjoins, vastly improving their experience. As this doesn’t directly address the Tor hidden identity registry DDoS attack but routes around it, zkSNACKs is also extending its fundraising support to help the Tor team fund developers to work towards resolving this ongoing issue.  

Tor is a critically important project for privacy on bitcoin and the internet that millions of people rely upon on a daily basis. Wasabi Wallet is grateful that such a tool exists and will do as much as possible to support Tor by promoting it and helping with its fundraising. Tor reliability is directly impacting the user experience of Wasabi Wallet users, so we care about this issue a lot. ~ Max Hillebrand, Wasabi Contributor and CEO at zkSNACKs.

A New Privacy Progress Feature

Privacy is often an abstract concept that is hard to relate to for most users. Making privacy more understandable by providing elegant visuals is taking one step closer to bringing privacy to millions of bitcoiners around the world.

On the home screen of the Wasabi desktop app, a privacy progress bar is now available, showing the size of each coin and their privacy levels within a colour scheme. Users now have a complete view of their wallet privacy with the existing wallet privacy score (that remains unchanged). The privacy bars can be expanded into a privacy ring viewed in a pop-up dialog, which provides additional information about each coin, its size and its privacy level. This gives optional insight into the wallet’s status, allowing users to have a better understanding of how much privacy they’ve achieved at any given time.

There is something satisfying with checklists and loading bars, especially when completed. It feels like progress is made and work gets done. While we believe privacy is a habit rather than a fixed goal, we hope that bringing privacy progress visuals will help more users take the leap and reclaim their privacy. ~ Max Hillebrand, Wasabi Contributor and CEO at zkSNACKs.

The post Wasabi Release 2.0.2 appeared first on Wasabi Wallet - Blog.

How to Use :

After Wasabi Wallet 2.0 has been fully loaded, users can click on the send icon, usually located in the upper right corner of the screen. This opens a dialogue box requesting the necessary information needed to send btc to another address.

By hovering over and clicking the QR Code icon to the right of the dialogue box, users will be able to automatically allow Wasabi Wallet to access their web camera to scan the specific code.

Users then have to align the QR Code within the designated dialogue box, allowing the code to be read.

Users usually input their btc addresses using the copy-and-paste method or using third-party software like notepad or messaging applications to send BTC addresses, allowing these third-party websites to associate particular/specific addresses with the corresponding profiles. This latest feature eliminates this issue.

It also avoids problems caused by clipboard malware, where the malicious software may unknowingly replace the valid address on the clipboard with one owned by the attacker.

Though this feature has not been implemented in the current Wasabi Wallet software, it will be in Wasabi Wallet 2.0. Unfortunately, the feature is currently only implemented for Windows.

The post Coming Soon: QR Code Implementation appeared first on Wasabi Wallet - Blog.

When?

Monday, September 13th.

What’s New?

As we mentioned in our previous report, Wasabi 2.0 was constructed under brand new considerations. The fundamental idea was to bring privacy into the bitcoin ecosystem (with privacy being the default). Let me share a short story to demonstrate why:

I remember when Peter McCormack asked me to take a look at his computer at the Bitcoin 2019 conference because Wasabi was not working for some reason. He barely had 5 minutes to meet because he was the keynote speaker at the conference. He says,

Time is a depreciating asset that you have…the balance I have to strike in life is How I use my time and how much bitcoin I own. ~ Peter McCormack

What does this have to do with Wasabi Wallet? When we started to think about our next iteration (the as of yet not named Wasabi Wallet 2.0), we considered who best represents the opposite side of the Bitcoin ecosystem spectrum. While Wasabi 1.0 was wildly popular amongst cypherpunks, it was incredibly difficult to use for the average person.

People shouldn’t be forced to spend time understanding the blockchain to use Wasabi Wallet. Instead, developers should create tools that intuitively ensure privacy for its users. So we decided to completely revamp the software.

What is the progress in the User Interface?

Send Fee Chart

What are the most important parameters when you are about to send bitcoin?

• The destination
• The amount
• Time priority

The first two are straightforward however, the 3rd one is more complex. The naïve answer is the quicker the transaction, the better, but if the tradeoff is price, then the answer changes to: “it depends”. It depends on the current fee environment, which is constantly changing according to network activity. So, the idea is to demonstrate this in a chart — without overwhelming the reader with fee rate or sat/vbyte — just to get a grasp of where the breakpoints are for one to consider. For example, sometimes it is not worth paying twice the fee just to gain 20 minutes.

The exact fee amount that will be paid for the transaction will be discussed later.

Privacy Optimization When Sending

When you are sending bitcoin you might consider leaving absolutely no trace. You can avoid the change by selecting a coin that is almost the exact amount required. Maybe this can be achieved with a combination of two or more coins. Wasabi will try to find the optimal one under the hood and provide you with 3 options.

In addition, the algorithm will try to avoid situations that were problematic in the first version (like post-mix consolidations).

TX History

The transaction history will contain a new column with the label of the  transaction so it will be easier to recognize each transaction.

Privacy Mode

When you turn on privacy mode, this feature masks all of the user’s private information. This feature was first introduced in Wasabi 1.0 and has proven to be useful when creating screenshots or if the user is in public.

QR Code Reader

The title says it all. You will be able to read a QR code by using the computer’s camera. If it is a bitcoin address of a payjoin URL, Wasabi will handle it automatically.

This is not just convenient but also protects against clipboard malware.

What are the New Features Regarding CoinJoin?

Background Running

Wasabi will be able to run in the background. Why is this useful?

• It can continuously synchronize with the backend and blockchain, so you will be able to use the wallet immediately when opened.
• The wallet will be able to synchronize and display mempool transactions, even if it is only running in the background.
• CoinJoins can happen without even opening the wallet.

All of the mentioned features are configurable in the settings, so you can customize its operation.

Auto CoinJoin

This is one of the most complicated features of the wallet. Like Wasabi is ensuring Network level privacy by default (Tor), we would like to ensure blockchain level privacy by default. So similarly, CoinJoins will happen in the background automatically with a minimal amount of user interaction. This is the concept but there are many questions to clarify, like:

• If the fee environment is expensive, should the wallet stop CoinJoin? If yes, how? Should there be a threshold? How can we display this to the user?
• How to select coins: those which are candidates for CoinJoin?
• How should the algorithm decide when to finish CoinJoining?

These were just the most basic questions, but there are many nuances within each. Also, there will be a pause button to temporarily stop CoinJoin operation with one click.

Manual CoinJoin

If the user decides to opt-out of automatic CoinJoin, there will be an on-demand start/stop manual switch. The CoinJoin will still happen under the hood and there will be some simple indicators regarding the status.

WabiSabi

WabiSabi is the name of the new CoinJoin framework. Without getting into the details, let me emphasize the most important features compared to the current CoinJoin (ZeroLink) implementation.

• Instant Privacy: You don’t need to piece together multiple CoinJoin procedures to make your entire wallet private.
• Pleb Compatibility: no more 0.1 BTC minimum denomination to CoinJoin!
• Perfect Mix: you will most likely be able to avoid having unmixed small amounts in your wallet that cannot be used for anything. No more “toxic change”.
• Consolidate Within a CoinJoin Privately: As the coordinator, we have always considered ourselves an adversary to obtain even more privacy. With WabiSabi, you will be able to CoinJoin more coins within one CoinJoin without leaking the information as to which coin is coming from the same source to the coordinator. This will also decrease the fragmentation of the wallet by reducing the number of coins in the wallet.
• Better Blockspace Efficiency: The CoinJoin transaction will be constructed as efficiently as possible by providing the most privacy with less outputs.

The post Wasabi Wallet Preview Progress appeared first on Wasabi Wallet - Blog.

In the announcement, we defined a probability distribution to estimate the time of arrival of the new wallet, which shall provide context for this status update.

CoinJoin

In January of 2020 we established a research team to improve coinjoins in Bitcoin.

In June we published a cryptographic research paper, which aims to replace the currently utilized Chaumian Coinjoin scheme to enable greater flexibility for organizing output amounts in coinjoins. While we have already received a great deal of feedback on it from the Bitcoin community, it’s still awaiting peer review from the Academic community. Furthermore, we also completed our first production ready implementation, but we aren’t yet satisfied with its performance. After everything gets sorted out, an audit is still due.

We also specified our desired networking protocol, however the implementation work hasn’t started yet.

The final part is to work out how we’d like to organize output amounts and select UTXOs. There is little implementation work to be done here, rather its specification is the more challenging part. We’re currently trying to come to consensus on just how many of our ideas we should include in the first version. But what I can already say, is that our starting results are miraculous: we are already able to create coinjoins that are both orders of magnitude cheaper and faster than Wasabi 1.0 coinjoins. Red changes will rarely be created, nor will there be a need to have a minimum amount to coinjoin anymore. At last, the UTXO set of wallets will be more diverse and coinjoins won’t inflate the number of coins in wallets anymore.

UI/UX

On the UI front, the team is making some eye-catching progress. Functionality-wise they implemented everything that does not require a wallet to be loaded and they are just about to move to the in-wallet features. After that, quality control and polishing is expected to take a place, too.

If you’d like to try it already, you can build Wasabi from source code and dotnet run within the WalletWasabi.Fluent.Desktop directory.

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